DataGrid和DataGridTemplateColumn

问题描述

我的应用程序中有几个DataGrid，它们每个都有相同的模板。例如，以下是每个DataGrid的定义方式：

I've several DataGrid in my application and they each have the same "template". For example, here's how each DataGrid is defined:

<DataGrid Style="{StaticResource MainGridStyle}">
    <DataGrid.Columns>
    <DataGridTemplateColumn CanUserResize="False"
        CanUserSort="False"
            CanUserReorder="False"
            CellStyle="{StaticResource RightCellStyle}">
...

如何在外部将 DataGridTemplateColumn定义为模板资源文件，因此我只需要写类似

How could I define the "DataGridTemplateColumn" as a Template in an external resource file, so I would simply have to write something like

<DataGridTemplateColumn Style={StaticResource MyFirstColumn}/>

在 MainGridStyle中，我定义了 CanUserAddRows等属性，...

In the "MainGridStyle" I define properties such "CanUserAddRows", ...

提前向您寻求帮助。

Fred

Thx in advance for your help.
Fred

推荐答案

由于 DataGridTemplateColumn 没有 Style 属性，因此您可以做的一件事就是创建一个附加属性。

Since DataGridTemplateColumn does not have a Style property, one thing you can do is create an attached property.

以下是一个示例：

[注意：，您可能需要将以下代码更改为适合您的项目。]

[NOTE: You may need to change the following code to suit you project.]

具有附加属性的类-

public class StyleExtensions
{
    public static Style GetStyle(DependencyObject obj)
    {
        return (Style)obj.GetValue(StyleProperty);
    }

    public static void SetStyle(DependencyObject obj, Style value)
    {
        obj.SetValue(StyleProperty, value);
    }

    public static void StyleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        Style style = e.NewValue as Style;
        if (style != null)
        {
            foreach (var s in style.Setters.OfType<Setter>())
            {
                d.SetValue(s.Property, s.Value);
            }
        }
    }

    // Using a DependencyProperty as the backing store for Style.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty StyleProperty =
        DependencyProperty.RegisterAttached("Style", typeof(Style), typeof(StyleExtensions), new UIPropertyMetadata(StyleChanged));
}

样式的定义 -

    <Style x:Key="MyFirstColumn">
        <Setter Property="DataGridColumn.CanUserResize"
                Value="False" />
        <Setter Property="DataGridColumn.CanUserSort"
                Value="False" />
        <Setter Property="DataGridColumn.CanUserReorder"
                Value="False" />
        <Setter Property="DataGridColumn.CellStyle"
                Value="{StaticResource RightCellStyle}" />
    </Style>

使用-

            <DataGrid>
                <DataGrid.Columns>
                    <DataGridTemplateColumn local:StyleExtensions.Style="{StaticResource MyFirstColumn}"></DataGridTemplateColumn>
                </DataGrid.Columns>
            </DataGrid>

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