遇到問題結合DataGridCell送價值與轉換器

Question

我有以下轉爐低於拋出的運行時錯誤：

System.Windows.Data Warning: 40 : BindingExpression path error: 'Text' property not found on 'object' ''ContentPresenter' (Name='')'. BindingExpression:Path=Content.Text; DataItem='DataGridCell' (Name=''); target element is 'DataGridCell' (Name=''); target property is 'IsTextMatch' (type 'Boolean')

<DataGrid.Resources> 
    <helpers:SearchValueConverter x:Key="SearchValueConverter" /> 
    <Style TargetType="{x:Type DataGridCell}"> 
     <Setter Property="helpers:SearchBehaviours.IsTextMatch"> 
      <Setter.Value> 
       <MultiBinding Converter="{StaticResource SearchValueConverter}"> 
        <Binding RelativeSource="{RelativeSource Self}" Path="Content.Text" /> 
        <Binding RelativeSource="{RelativeSource Self}" Path="(helpers:SearchBehaviours.SearchValue)" /> 
       </MultiBinding> 
      </Setter.Value> 
     </Setter> 
     <Style.Triggers> 
      <Trigger Property="helpers:SearchBehaviours.IsTextMatch" Value="True"> 
       <Setter Property="Background" Value="Orange" /> 
      </Trigger> 
     </Style.Triggers> 
    </Style> 
</DataGrid.Resources> 

有人能看到的問題是什麼？

Answer 1

在DataGridCell.Content對象可能沒有Text財產。

儘量結合Content：

<Binding RelativeSource="{RelativeSource Self}" Path="Content" /> 

然後測試的「內容」的類型：

public object Convert(object[] values, ... 
{ 
    var textBlock = values[0] as TextBlock; 

    if (textBlock != null) 
    { 
     // do something with textBlock.Text ...