我只是找到了答案由我自己:
问题出在哪里产生的被放置在每个单元内的TextBlock中的DataGridTextColumn
类的一部分:
protected override FrameworkElement GenerateElement(DataGridCell cell, object dataItem)
{
TextBlock block = new TextBlock {
Margin = new Thickness(4.0),
VerticalAlignment = VerticalAlignment.Center
};
if (DependencyProperty.UnsetValue != base.ReadLocalValue(FontFamilyProperty))
{
block.FontFamily = this.FontFamily;
}
if (this._fontSize.HasValue)
{
block.FontSize = this._fontSize.Value;
}
if (this._fontStyle.HasValue)
{
block.FontStyle = this._fontStyle.Value;
}
if (this._fontWeight.HasValue)
{
block.FontWeight = this._fontWeight.Value;
}
if (this._foreground != null)
{
block.Foreground = this._foreground;
}
if ((this.Binding != null) || !DesignerProperties.IsInDesignTool)
{
block.SetBinding(TextBlock.TextProperty, this.Binding);
}
return block;
}
正如你所看到的保证金静态设置为4.0。为了解决这个问题,我创建了一个包装类,派生自DataGridTextColumn
:
public class DataGridCustomTextColumn : DataGridTextColumn
{
protected override FrameworkElement GenerateElement(DataGridCell cell, object dataItem)
{
//Get the parent TextBlock
TextBlock block = (TextBlock)base.GenerateElement(cell, dataItem);
if (ElementStyle != null) //if an element style is given
{
//Apply each setter of the style to the generated block
ElementStyle.Setters.OfType<System.Windows.Setter>()
.ForEach((setter) => block.SetValue(setter.Property, setter.Value));
}
//Return styled block
return (FrameworkElement)objBlock;
}
}