WPF DataGrid 将单元格背景颜色绑定到分配的 Data 对象的属性
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WPF DataGrid bind cell background color to property of assigned Data object
提问by user2371475
I've got a DataGrid where the cells are assigned to a custom class defined below:
我有一个 DataGrid，其中单元格被分配给下面定义的自定义类：
public class DataGridVariableWrapper : DependencyObject
{
public Variable TheVariable { get; set; }
public Brush BackgroundColor
{
get { return (Brush)GetValue( BackgroundColorProperty ); }
set { SetValue( BackgroundColorProperty, value ); }
}
public static readonly DependencyProperty BackgroundColorProperty = DependencyProperty.Register( "BackgroundColor", typeof( Brush ), typeof( DataGridVariableWrapper ), new UIPropertyMetadata( null ) );
public DataGridVariableWrapper( Brush backgroundBrush, Variable theVariable )
{
this.BackgroundColor = backgroundBrush;
this.TheVariable = theVariable;
}
public override string ToString()
{
return TheVariable.Value.ToString();
}
}
I'm trying to have the DataGridCell background bound to the BackgroundColor property of this data wrapper class. I've tried:
我正在尝试将 DataGridCell 背景绑定到此数据包装器类的 BackgroundColor 属性。我试过了：
<DataGrid.CellStyle>
<Style TargetType="DataGridCell">
<Setter Property="Background" Value="{Binding DataGridVariableWrapper.BackgroundColor}" />
</Style>
</DataGrid.CellStyle>
But the background color remains unchanged. Am I doing something wrong here?
但背景颜色保持不变。我在这里做错了吗？
回答by LPL
If a data object is assigned to a DataGridCellyou will find it in the DataContext. That's why all you have to do in binding is to specify the desired property.
如果将数据对象分配给 a，DataGridCell您将在DataContext. 这就是为什么您在绑定中所要做的就是指定所需的属性。
<Style TargetType="DataGridCell">
<Setter Property="Background" Value="{Binding BackgroundColor}" />
</Style>
