DataGrid样式

1、自定义列（DataGridTemplateColumn）

<DataGridTemplateColumn Width="130">
    <DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
            <Image Source="D:资源图片VR.png" Width="20" Visibility="{Binding Path=url,Converter={StaticResource visibilityConvert}}"/>
        </DataTemplate>
     </DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

　　中间用了一个转换器 visibilityConvert，因为我要实现有url字段时显示图片没有就不显示图片

      转换器：

 public class UrlToVisibility : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null){ value = ""; };
            string result = value.ToString();
            if (result==null || result=="")
            {
                return Visibility.Hidden;
            }
            else
            {
                return Visibility.Visible;
            }
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}

　　界面引用：<convert:UrlToVisibility x:Key="visibilityConvert"/> 即可

2、改变选中行的样式

  在网上找的别人的代码是这样的

 <DataGrid.RowStyle>
     <Style TargetType="DataGridRow">
         <Setter Property="Height" Value="40"></Setter>
         <Setter Property ="Background" Value ="#4C238BFF"/>
         <Style.Triggers>
             <Trigger Property="IsMouseOver" Value="True">
                  <Setter Property="Background" Value="#FF6493CE"/>
              </Trigger>
             <Trigger Property="IsSelected" Value="True">
                  <Setter Property="Background" Value="#b58d20"/>
                   <Setter Property="Foreground" Value="Yellow"/>
              </Trigger>
          </Style.Triggers>
        </Style>
</DataGrid.RowStyle>

　　可是并没有实现我想要的效果，后来才知道原来是被CellStyle挡住了RowStyle重新设置CellSyle即可

<DataGrid.CellStyle>
   <Style TargetType="DataGridCell">
       <Setter Property="BorderThickness" Value="0"/>
       <Style.Triggers>
              <Trigger Property="IsSelected" Value="True">
                   <Setter Property="Background" Value="#FF6493CE"/>
                   <Setter Property="Foreground" Value="Yellow"/>
               </Trigger>
         </Style.Triggers>
     </Style>
</DataGrid.CellStyle>

3、添加复选框列（继续采用上面的自定义列实现）：

<DataGridTemplateColumn Header=" " Width="50">
   <DataGridTemplateColumn.CellTemplate>
      <DataTemplate>
         <CheckBox  Background="Transparent"  BorderBrush="AliceBlue" BorderThickness="1" Tag="{Binding}"  VerticalAlignment="Center" HorizontalAlignment="Center" Checked="Cb_Checked" Unchecked="Cb_Checked" >
            <CheckBox.Template>
                <ControlTemplate TargetType="CheckBox">
                   <Border Width="16" Height="16" BorderBrush="Red" BorderThickness="1" Background="#22238BFF">
                       <Path  Data="M 2,8 L6,12 12,2" Fill="Transparent" Opacity="0" Stroke="Yellow" StrokeThickness="2" VerticalAlignment="Center" HorizontalAlignment="Left"  x:Name="selectpath"/>
                   </Border>
                   <ControlTemplate.Triggers>
                     <Trigger Property="IsChecked" Value="True">
                        <Setter Property="Opacity" TargetName="selectpath" Value="1"/>
                     </Trigger>
                  </ControlTemplate.Triggers>
              </ControlTemplate>
           </CheckBox.Template>
         </CheckBox>
       </DataTemplate>
   </DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

效果图如下：