原文:示例：WPF开发的简单ObjectProperyForm用来绑定实体表单
一、目的：自定义控件，用来直接绑定实体数据，简化开发周期
二、实现：
1、绑定实体对象
2、通过特性显示属性名称
3、通过特性增加验证条件
4、已经实现String、Int、Double、DateTime、Bool几种简单类型的DataTemplate模板，其他模板支持扩展
5、其他后续更新...
三、示例：
实体定义如下：
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public class Student
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{
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[Display("姓名")]
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[Required]
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public string Name { get; set; }
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[Display("班级")]
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[Required]
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public string Class { get; set; }
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[Display("地址")]
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[Required]
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public string Address { get; set; }
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[Display("邮箱")]
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[Required]
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public string Emall { get; set; }
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[Display("可用")]
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[Required]
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public bool IsEnbled { get; set; }
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[Display("时间")]
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[Required]
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public DateTime time { get; set; }
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[Display("年龄")]
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[Required]
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public int Age { get; set; }
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[Display("平均分")]
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public double Score { get; set; }
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[Display("电话号码")]
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[Required]
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[RegularExpression(@"^1[3|4|5|7|8][0-9]{9}$", ErrorMessage = "手机号码不合法！")]
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public string Tel { get; set; }
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}
DisplayAttribute：用来标识显示名称
ResuiredAttribute：用来标识数据不能为空
RgularExpression：引用正则表达式验证数据是否匹配
其他特性后续更新...
应用方式：
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<UserControl.Resources>
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<local:Student x:Key="S.Student.HeBianGu"
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Name="河边骨"
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Address="四川省成都市高新区"
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Class="四年级"
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Emall="[email protected]" Age="33" Score="99.99" IsEnbled="True" time="2019-09-09"/>
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</UserControl.Resources>
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<wpfcontrollib:ObjectPropertyForm Grid.Row="1" Title="学生信息" SelectObject="{StaticResource S.Student.HeBianGu}" >
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<base:Interaction.Behaviors>
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<base:MouseDragElementBehavior ConstrainToParentBounds="True"/>
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<base:SelectZIndexElementBehavior/>
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</base:Interaction.Behaviors>
四、代码
1、通过反射获取属性和特性
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ObservableCollection<ObjectPropertyItem> PropertyItemSource
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{
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get { return (ObservableCollection<ObjectPropertyItem>)GetValue(PropertyItemSourceProperty); }
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set { SetValue(PropertyItemSourceProperty, value); }
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}
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// Using a DependencyProperty as the backing store for MyProperty. This enables animation, styling, binding, etc...
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public static readonly DependencyProperty PropertyItemSourceProperty =
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DependencyProperty.Register("PropertyItemSource", typeof(ObservableCollection<ObjectPropertyItem>), typeof(ObjectPropertyForm), new PropertyMetadata(new ObservableCollection<ObjectPropertyItem>(), (d, e) =>
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{
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ObjectPropertyForm control = d as ObjectPropertyForm;
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if (control == null) return;
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ObservableCollection<ObjectPropertyItem> config = e.NewValue as ObservableCollection<ObjectPropertyItem>;
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}));
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void RefreshObject(object o)
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{
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Type type = o.GetType();
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var propertys = type.GetProperties();
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this.PropertyItemSource.Clear();
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foreach (var item in propertys)
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{
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var from = ObjectPropertyFactory.Create(item, o);
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this.PropertyItemSource.Add(from);
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}
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this.ItemsSource = this.PropertyItemSource;
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}
2、定义类型基类、扩展之类和工厂方法
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/// <summary> 类型基类 </summary>
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public class ObjectPropertyItem : NotifyPropertyChanged
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{
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public string Name { get; set; }
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public PropertyInfo PropertyInfo { get; set; }
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public object Obj { get; set; }
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public ObjectPropertyItem(PropertyInfo property, object obj)
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{
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PropertyInfo = property;
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-
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var display = property.GetCustomAttribute<DisplayAttribute>();
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Name = display == null ? property.Name : display.Name;
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Obj = obj;
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}
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}
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/// <summary> 泛型类型基类 </summary>
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public class ObjectPropertyItem<T> : ObjectPropertyItem
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{
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private T _value;
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/// <summary> 说明 </summary>
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public T Value
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{
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get { return _value; }
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set
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{
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this.Message = null;
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// Do：检验数据有效性
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if (Validations != null)
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{
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foreach (var item in Validations)
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{
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if (!item.IsValid(value))
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{
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this.Message = item.ErrorMessage;
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}
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}
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}
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_value = value;
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RaisePropertyChanged("Value");
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this.SetValue(value);
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}
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}
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void SetValue(T value)
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{
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this.PropertyInfo.SetValue(Obj, value);
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}
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List<ValidationAttribute> Validations { get; }
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public ObjectPropertyItem(PropertyInfo property, object obj) : base(property, obj)
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{
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Value = (T)property.GetValue(obj);
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Validations = property.GetCustomAttributes<ValidationAttribute>()?.ToList();
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if(Validations!=null&& Validations.Count>0)
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{
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this.Flag = "*";
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}
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}
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private string _message;
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/// <summary> 说明 </summary>
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public string Message
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{
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get { return _message; }
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set
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{
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_message = value;
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RaisePropertyChanged("Message");
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}
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}
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public string Flag { get; set; }
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}
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/// <summary> 字符串属性类型 </summary>
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public class StringPropertyItem : ObjectPropertyItem<string>
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{
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public StringPropertyItem(PropertyInfo property, object obj) : base(property, obj)
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{
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}
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}
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/// <summary> 时间属性类型 </summary>
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public class DateTimePropertyItem : ObjectPropertyItem<DateTime>
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{
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public DateTimePropertyItem(PropertyInfo property, object obj) : base(property, obj)
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{
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}
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}
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/// <summary> Double属性类型 </summary>
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public class DoublePropertyItem : ObjectPropertyItem<double>
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{
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public DoublePropertyItem(PropertyInfo property, object obj) : base(property, obj)
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{
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}
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}
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/// <summary> Int属性类型 </summary>
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public class IntPropertyItem : ObjectPropertyItem<int>
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{
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public IntPropertyItem(PropertyInfo property, object obj) : base(property, obj)
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{
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}
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}
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/// <summary> Bool属性类型 </summary>
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public class BoolPropertyItem : ObjectPropertyItem<bool>
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{
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public BoolPropertyItem(PropertyInfo property, object obj) : base(property, obj)
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{
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}
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}
类型工厂：
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public class ObjectPropertyFactory
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{
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public static ObjectPropertyItem Create(PropertyInfo info, object obj)
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{
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if (info.PropertyType == typeof(int))
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{
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return new IntPropertyItem(info, obj);
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}
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else if (info.PropertyType == typeof(string))
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{
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return new StringPropertyItem(info, obj);
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}
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else if (info.PropertyType == typeof(DateTime))
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{
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return new DateTimePropertyItem(info, obj);
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}
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else if (info.PropertyType == typeof(double))
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{
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return new DoublePropertyItem(info, obj);
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}
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else if (info.PropertyType == typeof(bool))
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{
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return new BoolPropertyItem(info, obj);
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}
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return null;
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}
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}
3、样式模板
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<DataTemplate DataType="{x:Type base:StringPropertyItem}">
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<Grid Width="{Binding RelativeSource={RelativeSource AncestorType=local:ObjectPropertyForm},Path=Width-5}"
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Height="35" Margin="5,0">
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="*"/>
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<ColumnDefinition Width="Auto"/>
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<ColumnDefinition Width="2*"/>
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<ColumnDefinition Width="30"/>
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</Grid.ColumnDefinitions>
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<TextBlock Text="{Binding Name}"
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FontSize="14"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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<TextBlock Text="{Binding Flag}"
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Grid.Column="1" Margin="5,0"
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FontSize="14" Foreground="{DynamicResource S.Brush.Red.Notice}"
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HorizontalAlignment="Right"
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VerticalAlignment="Center"/>
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<local:FTextBox Text="{Binding Value,UpdateSourceTrigger=PropertyChanged}" Style="{DynamicResource DefaultTextBox}"
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FontSize="14" Width="Auto" CaretBrush="Black"
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Grid.Column="2" Height="30" base:ControlAttachProperty.FIcon=""
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VerticalContentAlignment="Center"
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HorizontalAlignment="Stretch" VerticalAlignment="Center"/>
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<TextBlock Text="" Grid.Column="3" Style="{DynamicResource FIcon }"
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Foreground="{DynamicResource S.Brush.Red.Notice}"
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Visibility="{Binding Message,Converter={x:Static base:XConverter.VisibilityWithOutStringConverter},ConverterParameter={x:Null},Mode=TwoWay}"
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FontSize="14" TextTrimming="CharacterEllipsis" ToolTip="{Binding Message}"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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</Grid>
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</DataTemplate>
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<DataTemplate DataType="{x:Type base:BoolPropertyItem}">
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<Grid Width="{Binding RelativeSource={RelativeSource AncestorType=local:ObjectPropertyForm},Path=Width-5}" Height="35" Margin="5,0">
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="*"/>
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<ColumnDefinition Width="Auto"/>
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<ColumnDefinition Width="2*"/>
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<ColumnDefinition Width="30"/>
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</Grid.ColumnDefinitions>
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<TextBlock Text="{Binding Name}"
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FontSize="14"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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<TextBlock Text="{Binding Flag}"
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Grid.Column="1" Margin="5,0"
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FontSize="14" Foreground="{DynamicResource S.Brush.Red.Notice}"
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HorizontalAlignment="Right"
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VerticalAlignment="Center"/>
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<CheckBox IsChecked="{Binding Value}" FontSize="14" Grid.Column="2" Height="30"
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VerticalContentAlignment="Center"
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HorizontalAlignment="Left" VerticalAlignment="Center"/>
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<TextBlock Text="" Grid.Column="3" Style="{DynamicResource FIcon }"
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Foreground="{DynamicResource S.Brush.Red.Notice}" Visibility="{Binding Message,Converter={x:Static base:XConverter.VisibilityWithOutStringConverter},ConverterParameter={x:Null}}"
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FontSize="14" TextTrimming="CharacterEllipsis" ToolTip="{Binding Message}"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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</Grid>
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</DataTemplate>
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<DataTemplate DataType="{x:Type base:DateTimePropertyItem}">
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<Grid Width="{Binding RelativeSource={RelativeSource AncestorType=local:ObjectPropertyForm},Path=Width-5}" Height="35" Margin="5,0">
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="*"/>
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<ColumnDefinition Width="Auto"/>
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<ColumnDefinition Width="2*"/>
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<ColumnDefinition Width="30"/>
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</Grid.ColumnDefinitions>
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<TextBlock Text="{Binding Name}"
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FontSize="14"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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<TextBlock Text="{Binding Flag}"
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Grid.Column="1" Margin="5,0"
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FontSize="14" Foreground="{DynamicResource S.Brush.Red.Notice}"
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HorizontalAlignment="Right"
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VerticalAlignment="Center"/>
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<DatePicker SelectedDate="{Binding Value}" FontSize="14" Grid.Column="2" Height="30"
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VerticalContentAlignment="Center" Width="Auto"
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HorizontalAlignment="Stretch" VerticalAlignment="Center"/>
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<TextBlock Text="" Grid.Column="3" Style="{DynamicResource FIcon }"
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Foreground="{DynamicResource S.Brush.Red.Notice}" Visibility="{Binding Message,Converter={x:Static base:XConverter.VisibilityWithOutStringConverter},ConverterParameter={x:Null}}"
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FontSize="14" TextTrimming="CharacterEllipsis" ToolTip="{Binding Message}"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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</Grid>
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</DataTemplate>
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<DataTemplate DataType="{x:Type base:IntPropertyItem}">
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<Grid Width="{Binding RelativeSource={RelativeSource AncestorType=local:ObjectPropertyForm},Path=Width-5}" Height="35" Margin="5,0">
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="*"/>
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<ColumnDefinition Width="Auto"/>
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<ColumnDefinition Width="2*"/>
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<ColumnDefinition Width="30"/>
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</Grid.ColumnDefinitions>
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<TextBlock Text="{Binding Name}"
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FontSize="14"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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<TextBlock Text="{Binding Flag}"
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Grid.Column="1" Margin="5,0"
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FontSize="14" Foreground="{DynamicResource S.Brush.Red.Notice}"
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HorizontalAlignment="Right"
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VerticalAlignment="Center"/>
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<Slider Value="{Binding Value}" FontSize="14" Grid.Column="2" Height="30"
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VerticalContentAlignment="Center"
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HorizontalAlignment="Stretch" VerticalAlignment="Center"/>
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<TextBlock Text="" Grid.Column="3" Style="{DynamicResource FIcon }"
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Foreground="{DynamicResource S.Brush.Red.Notice}" Visibility="{Binding Message,Converter={x:Static base:XConverter.VisibilityWithOutStringConverter},ConverterParameter={x:Null}}"
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FontSize="14" TextTrimming="CharacterEllipsis" ToolTip="{Binding Message}"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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</Grid>
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</DataTemplate>
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<DataTemplate DataType="{x:Type base:DoublePropertyItem}">
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<Grid Width="{Binding RelativeSource={RelativeSource AncestorType=local:ObjectPropertyForm},Path=Width-5}" Height="35" Margin="5,0">
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="*"/>
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<ColumnDefinition Width="Auto"/>
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<ColumnDefinition Width="2*"/>
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<ColumnDefinition Width="30"/>
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</Grid.ColumnDefinitions>
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<TextBlock Text="{Binding Name}"
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FontSize="14"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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<TextBlock Text="{Binding Flag}"
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Grid.Column="1" Margin="5,0"
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FontSize="14" Foreground="{DynamicResource S.Brush.Red.Notice}"
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HorizontalAlignment="Right"
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VerticalAlignment="Center"/>
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<Slider Value="{Binding Value}" FontSize="14" Grid.Column="2" Height="30"
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VerticalContentAlignment="Center"
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HorizontalAlignment="Stretch" VerticalAlignment="Center"/>
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<TextBlock Text="" Grid.Column="3" Style="{DynamicResource FIcon }"
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Foreground="{DynamicResource S.Brush.Red.Notice}" Visibility="{Binding Message,Converter={x:Static base:XConverter.VisibilityWithOutStringConverter},ConverterParameter={x:Null}}"
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FontSize="14" TextTrimming="CharacterEllipsis" ToolTip="{Binding Message}"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"/>
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</Grid>
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</DataTemplate>
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<Style TargetType="local:ObjectPropertyForm">
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<Setter Property="Background" Value="{DynamicResource S.Brush.TextBackgroud.Default}"/>
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<Setter Property="BorderThickness" Value="0"/>
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<!--<Setter Property="BorderBrush" Value="{x:Null}"/>-->
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<Setter Property="HorizontalAlignment" Value="Stretch"/>
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<Setter Property="VerticalAlignment" Value="Center"/>
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<Setter Property="HorizontalContentAlignment" Value="Center"/>
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<Setter Property="VerticalContentAlignment" Value="Center"/>
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<!--<Setter Property="FocusVisualStyle" Value="{x:Null}"/>-->
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<Setter Property="Padding" Value="0" />
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<Setter Property="Width" Value="500" />
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<Setter Property="Height" Value="Auto" />
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<Setter Property="ItemsSource" Value="{Binding PropertyItemSource,Mode=TwoWay}" />
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<Setter Property="ItemsPanel">
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<Setter.Value>
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<ItemsPanelTemplate>
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<StackPanel/>
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</ItemsPanelTemplate>
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</Setter.Value>
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</Setter>
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<Setter Property="Template">
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<Setter.Value>
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<ControlTemplate TargetType="local:ObjectPropertyForm">
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<GroupBox Header="{TemplateBinding Title}">
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<Border HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
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VerticalAlignment="{TemplateBinding VerticalAlignment}"
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Background="{TemplateBinding Background}"
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BorderBrush="{TemplateBinding BorderBrush}"
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BorderThickness="{TemplateBinding BorderThickness}">
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<ItemsPresenter/>
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</Border>
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</GroupBox>
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</ControlTemplate>
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</Setter.Value>
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</Setter>
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</Style>
4、开放扩展
1、只需定义一个扩展类型，如：
/// <summary> 字符串属性类型 </summary>
public class StringPropertyItem : ObjectPropertyItem<string>
{
public StringPropertyItem(PropertyInfo property, object obj) : base(property, obj)
{
}
}
2、再添加一个DataTmeplate，如：
<DataTemplate DataType="{x:Type base:StringPropertyItem}">
<Grid Width="{Binding RelativeSource={RelativeSource AncestorType=local:ObjectPropertyForm},Path=Width-5}"
Height="35" Margin="5,0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="2*"/>
<ColumnDefinition Width="30"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Name}"
FontSize="14"
HorizontalAlignment="Center"
VerticalAlignment="Center"/>
<TextBlock Text="{Binding Flag}"
Grid.Column="1" Margin="5,0"
FontSize="14" Foreground="{DynamicResource S.Brush.Red.Notice}"
HorizontalAlignment="Right"
VerticalAlignment="Center"/>
<local:FTextBox Text="{Binding Value,UpdateSourceTrigger=PropertyChanged}" Style="{DynamicResource DefaultTextBox}"
FontSize="14" Width="Auto" CaretBrush="Black"
Grid.Column="2" Height="30" base:ControlAttachProperty.FIcon=""
VerticalContentAlignment="Center"
HorizontalAlignment="Stretch" VerticalAlignment="Center"/>
<TextBlock Text="" Grid.Column="3" Style="{DynamicResource FIcon }"
Foreground="{DynamicResource S.Brush.Red.Notice}"
Visibility="{Binding Message,Converter={x:Static base:XConverter.VisibilityWithOutStringConverter},ConverterParameter={x:Null},Mode=TwoWay}"
FontSize="14" TextTrimming="CharacterEllipsis" ToolTip="{Binding Message}"
HorizontalAlignment="Center"
VerticalAlignment="Center"/>
</Grid>
</DataTemplate>