Datagrid前景色不工作 [英] Datagrid foreground colour not working

问题描述

我有一个简单的datagrid显示二维数据。
我在测试项目中尝试过，结果很好。

这是xmal：

 < Grid> 
< DataGrid Name =dgMargin =50FontSize =26CellEditEnding =dg_CellEditEndingBeginningEdit =dg_BeginningEditLoadingRow =DataGrid_LoadingRowEnableRowVirtualization =FalseAutoGeneratingColumn =dg_AutoGeneratingColumn/> 
< / Grid> 
  

和相关事件代码：

  private void DataGrid_LoadingRow（object sender，System.Windows.Controls.DataGridRowEventArgs e）
 {
 e.Row.Header =R+（（e.Row。 GetIndex（））+ 1）.ToString（）; 
} 
 
 private void dg_AutoGeneratingColumn（object sender，System.Windows.Controls.DataGridAutoGeneratingColumnEventArgs e）
 {
 string str = e.PropertyName; 
 int num = int.Parse（e.PropertyName）; 
 e.Column.Header =C+（num + 1）.ToString（）; 
 
} 
  

那么我必须把它放在我真正的项目中一个样式的窗口。

所以我把相同的非常容易的xaml（添加背景和前景在这里我有一个渐变背景），以便xamls是：

 < Grid> 
< DataGrid Name =dtgNestsMargin =50FontSize =26Background =WhiteForeground =BlackHeadersVisibility =AllCellEditEnding =dg_CellEditEndingBeginningEdit =dg_BeginningEditLoadingRow = DataGrid_LoadingRowEnableRowVirtualization =FalseAutoGeneratingColumn =dg_AutoGeneratingColumn/> 
< / Grid> 
  

，效果是：

a href =https://i.stack.imgur.com/y6heg.png =nofollow noreferrer>

所以简单地说，没有在任何部分设置FOREGROUND。那就是：

• 单元格


• 行标题


• 列标题

所以没有地方。
任何人都可以告诉我为什么？
提前谢谢
Patrick

解决方案

在WPF DataGrid中，所有与cell相关的设计需要被设置为列的 ElementStyle ，它们覆盖了Grid中设置的前景。尝试以下内容：

在您的XAML资源中

 code>< Style x：Key =BlackCellStyleTargetType ={x：Type TextBlock}> 
< Setter Property =ForegroundValue =Black/> 
< / Style> 
  

在您的 AutoGeneratingColumn 处理程序中：

  private void dg_AutoGeneratingColumn（object sender，System.Windows.Controls.DataGridAutoGeneratingColumnEventArgs e）
 {
 string str = e.PropertyName; 
 int num = int.Parse（e.PropertyName）; 
 e.Column.Header =C+（num + 1）.ToString（）; 
 e.Column.ElementStyle = FindResource（BlackCellStyle）作为样式; 
} 
  

这将直接将前景应用到您的单元格

I have a simple datagrid that display bidimensional data. I have tried it in a test project and the result is nice.

Here is the xmal:

<Grid >
<DataGrid Name="dg" Margin="50" FontSize="26" CellEditEnding="dg_CellEditEnding" BeginningEdit="dg_BeginningEdit"  LoadingRow="DataGrid_LoadingRow" EnableRowVirtualization="False"  AutoGeneratingColumn="dg_AutoGeneratingColumn"/>
</Grid>

and the relevant event code:

 private void DataGrid_LoadingRow(object sender, System.Windows.Controls.DataGridRowEventArgs e)
{
  e.Row.Header = "R" + ((e.Row.GetIndex()) + 1).ToString();
}

private void dg_AutoGeneratingColumn(object sender, System.Windows.Controls.DataGridAutoGeneratingColumnEventArgs e)
{
  string str = e.PropertyName;
  int num = int.Parse(e.PropertyName);
  e.Column.Header = "C" + (num + 1).ToString();

}

then I have to put it in my real project which is a styled window.

So I put the same very easy xaml (adding background and foreground fore here I have a gradient background) so that the xamls is:

<Grid >
<DataGrid Name="dtgNests" Margin="50" FontSize="26" Background="White" Foreground="Black" HeadersVisibility="All" CellEditEnding=" dg_CellEditEnding" BeginningEdit="dg_BeginningEdit"  LoadingRow="DataGrid_LoadingRow" EnableRowVirtualization="False"  AutoGeneratingColumn="dg_AutoGeneratingColumn"/>
</Grid>

and the effect is:

so in short the FOREGROUND is not being set in any part. That is:

• cells
• row headers
• column headers

so nowhere. Can anyone tell me why? thank you in advance Patrick

解决方案

In a WPF DataGrid, all cell-related design needs to be set as the Column's ElementStyle, which overrides the foreground set in your Grid. Try the following:

In your XAML resources:

<Style x:Key="BlackCellStyle" TargetType="{x:Type TextBlock}">
    <Setter Property="Foreground" Value="Black" />
</Style>

In your AutoGeneratingColumn handler:

private void dg_AutoGeneratingColumn(object sender, System.Windows.Controls.DataGridAutoGeneratingColumnEventArgs e)
{
  string str = e.PropertyName;
  int num = int.Parse(e.PropertyName);
  e.Column.Header = "C" + (num + 1).ToString();
  e.Column.ElementStyle = FindResource("BlackCellStyle") as Style;
}

This will apply the foreground directly to your cells

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