RowStyleSelector未调用 [英] RowStyleSelector Not Called

问题描述

在我的资源中，我有

 < loc：DetailsRowStyleSelector x：Key =detailsRowStyleSelectorAddRowStyle ={StaticResource newItemRowStyle}StandardRowStyle ={StaticResource RowStyle}/> 
  

然后我的datagrid使用这样：

 < DataGrid ... 
 EnableRowVirtualization =false
 VirtualizingStackPanel.VirtualizationMode =Standard
 RowStyleSelector ={StaticResource detailsRowStyleSelector}
  

调用选择器的构造函数，但是SelectStyle方法不是，我的行都看起来一样。似乎有很少的文档，但这是我的选择器的样子：

  public class DetailsRowStyleSelector：StyleSelector {
 public Style AddRowStyle {get;组; } 
 public Style StandardRowStyle {get;组; } 
 
 public DetailsRowStyleSelector（）{
 Console.WriteLine（）; //这被称为
} 
 
 public override Style SelectStyle（object item，DependencyObject container）{
 //这不叫
  

解决方案

最有可能的原因是您有 RowStyle 或 ItemContainerStyle 设置在 DataGrid 中，本地或通过继承的样式。

RowStyleSelector 覆盖 ItemContainerStyleSelector ，其中包括文档中的以下声明：

请注意，如果 ItemContainerStyle属性已设置。

I'm having difficulty getting a RowStyleSelector to work with a WPF DataGrid.

In my resources, I have

<loc:DetailsRowStyleSelector x:Key="detailsRowStyleSelector" AddRowStyle="{StaticResource newItemRowStyle}" StandardRowStyle="{StaticResource RowStyle}"/>

Then my datagrid uses this like so:

<DataGrid ...
    EnableRowVirtualization="false"      
    VirtualizingStackPanel.VirtualizationMode="Standard"
    RowStyleSelector="{StaticResource detailsRowStyleSelector}"

The constructor for the selector is called, but the SelectStyle method is not, and my rows all look the same. There seems to be very little documentation on this, but this is what my selector looks like:

public class DetailsRowStyleSelector : StyleSelector {
    public Style AddRowStyle { get; set; }
    public Style StandardRowStyle { get; set; }

    public DetailsRowStyleSelector() {
        Console.WriteLine(""); // this is called
    }

    public override Style SelectStyle(object item, DependencyObject container) {
        // this is not called

解决方案

The most likely cause is that you have either the RowStyle or ItemContainerStyle set on the DataGrid, either locally or through an inherited style.

The RowStyleSelector overrides the ItemContainerStyleSelector, which includes the following statement in the documentation:

Note that this property is ignored if the ItemContainerStyle property is set.

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