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本文介绍了MVC5:枚举单选按钮,标签为显示名称的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有这些枚举
public enum QuestionStart{[Display(Name="重复直到找到共同匹配")]重复直到找到共同点,[显示(名称=重复一次")]重复一次,[显示(名称=不重复")]不重复}公共枚举问题结束{[显示(名称=取消邀请")]取消邀请,[Display(Name="在第一个可用的共同日期与参与者一起计划")]FirstAvailableCommon,[Display(Name="在我第一个可用的共同日期与参与者一起计划")]你的第一个可用公共}
我有一个帮助类来显示枚举中每个字段的所有单选按钮
@model 枚举@foreach(Enum.GetValues(Model.GetType()) 中的 var 值){@Html.RadioButtonFor(m => m, value)@Html.Label(value.ToString())<br/>}
现在标签设置为值名称,而不是我为值提供的显示名称.
例如:
[Display(Name="取消邀请")]取消邀请
我得到了旁边带有 CancelInvitation
的单选按钮.
如何让它显示我给它的显示名称(Cancel Invitation
)?
解决方案
解决方案来了 -
归功于这位非凡的绅士 - ThumNet,他为 Enum 编写了 RadioButtonList 作为扩展
第 1 步 - 在 Views/Shared/EditorTemplates 目录(如果不存在,然后创建该目录) -
@model 枚举@{//在您的枚举上查找 [Display(Name="Some Name")] 或 [Display(Name="Some Name", ResourceType=typeof(ResourceFile)] 属性Func<枚举,字符串>getDescription = en =>{类型类型 = en.GetType();System.Reflection.MemberInfo[] memInfo = type.GetMember(en.ToString());if (memInfo != null && memInfo.Length > 0){object[] attrs = memInfo[0].GetCustomAttributes(typeof(System.ComponentModel.DataAnnotations.DisplayAttribute),错误的);if (attrs != null && attrs.Length > 0)返回 ((System.ComponentModel.DataAnnotations.DisplayAttribute)attrs[0]).GetName();}返回 en.ToString();};var listItems = Enum.GetValues(Model.GetType()).OfType().Select(e =>新的选择列表项(){文本 = getDescription(e),值 = e.ToString(),Selected = e.Equals(Model)});字符串前缀 = ViewData.TemplateInfo.HtmlFieldPrefix;整数索引 = 0;ViewData.TemplateInfo.HtmlFieldPrefix = string.Empty;foreach(listItems 中的 var li){string fieldName = string.Format(System.Globalization.CultureInfo.InvariantCulture, "{0}_{1}", prefix, index++);<div class="editor-radio">@Html.RadioButton(prefix, li.Value, li.Selected, new { @id = fieldName })@Html.Label(fieldName, li.Text)
}ViewData.TemplateInfo.HtmlFieldPrefix = 前缀;}
然后有你的枚举 -
公共枚举 QuestionEnd{[Display(Name = "取消邀请")]取消邀请,[Display(Name = "在第一个可用的共同日期与参与者一起计划")]FirstAvailableCommon,[Display(Name = "在我第一个可用的共同日期与参与者一起计划")]你的第一个可用公共}
第 2 步 - 创建模型 -
公共类 RadioEnumModel{公共问题结束 qEnd { 得到;放;}}
第 3 步 - 创建控制器操作 -
public ActionResult Index(){RadioEnumModel m = new RadioEnumModel();返回视图(m);}
第 4 步 - 创建视图 -
@model MVC.Controllers.RadioEnumModel@Html.EditorFor(x => x.qEnd, "RadioButtonListEnum")
那么输出将是 -
I have these enums
public enum QuestionStart
{
[Display(Name="Repeat till common match is found")]
RepeatTillCommonIsFound,
[Display(Name="Repeat once")]
RepeatOnce,
[Display(Name="No repeat")]
NoRepeat
}
public enum QuestionEnd
{
[Display(Name="Cancel Invitation")]
CancelInvitation,
[Display(Name="Plan with participants on first available common date")]
FirstAvailableCommon,
[Display(Name="Plan with participants on my first available common date")]
YourFirstAvailableCommon
}
and I have a helper class to show all the radiobutton for each field in enum
@model Enum
@foreach (var value in Enum.GetValues(Model.GetType()))
{
@Html.RadioButtonFor(m => m, value)
@Html.Label(value.ToString())
<br/>
}
Right now the label is set to the value name and not the display name i have given for values.
For example for:
[Display(Name="Cancel Invitation")]
CancelInvitation
I get radio button with CancelInvitation
next to it.
How can I make it display the Display name(Cancel Invitation
) i have given to it?
解决方案
Here goes the solution -
Credit goes to this extraordinary gentleman - ThumNet, who wrote RadioButtonList for Enum as an extension
Step 1 - Create RadioButtonListEnum.cshtml file with below code (code from above reference) in Views/Shared/EditorTemplates directory (if not exist, then create that directory) -
@model Enum
@{
// Looks for a [Display(Name="Some Name")] or a [Display(Name="Some Name", ResourceType=typeof(ResourceFile)] Attribute on your enum
Func<Enum, string> getDescription = en =>
{
Type type = en.GetType();
System.Reflection.MemberInfo[] memInfo = type.GetMember(en.ToString());
if (memInfo != null && memInfo.Length > 0)
{
object[] attrs = memInfo[0].GetCustomAttributes(typeof(System.ComponentModel.DataAnnotations.DisplayAttribute),
false);
if (attrs != null && attrs.Length > 0)
return ((System.ComponentModel.DataAnnotations.DisplayAttribute)attrs[0]).GetName();
}
return en.ToString();
};
var listItems = Enum.GetValues(Model.GetType()).OfType<Enum>().Select(e =>
new SelectListItem()
{
Text = getDescription(e),
Value = e.ToString(),
Selected = e.Equals(Model)
});
string prefix = ViewData.TemplateInfo.HtmlFieldPrefix;
int index = 0;
ViewData.TemplateInfo.HtmlFieldPrefix = string.Empty;
foreach (var li in listItems)
{
string fieldName = string.Format(System.Globalization.CultureInfo.InvariantCulture, "{0}_{1}", prefix, index++);
<div class="editor-radio">
@Html.RadioButton(prefix, li.Value, li.Selected, new { @id = fieldName })
@Html.Label(fieldName, li.Text)
</div>
}
ViewData.TemplateInfo.HtmlFieldPrefix = prefix;
}
Then have your enum -
public enum QuestionEnd
{
[Display(Name = "Cancel Invitation")]
CancelInvitation,
[Display(Name = "Plan with participants on first available common date")]
FirstAvailableCommon,
[Display(Name = "Plan with participants on my first available common date")]
YourFirstAvailableCommon
}
Step 2 - Create Model -
public class RadioEnumModel
{
public QuestionEnd qEnd { get; set; }
}
Step 3 - Create Controller Action -
public ActionResult Index()
{
RadioEnumModel m = new RadioEnumModel();
return View(m);
}
Step 4 - Create View -
@model MVC.Controllers.RadioEnumModel
@Html.EditorFor(x => x.qEnd, "RadioButtonListEnum")
Then the output would be -
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