<DataGridTextColumn SortMemberPath="Model.DtlName">
          <DataGridTextColumn.Binding>
                   <Binding Path="Model.DtlName" UpdateSourceTrigger="PropertyChanged" >
                          <Binding.ValidationRules >
                                <validation:NotNullOrEmptyRule ValidatesOnTargetUpdated="True"/>
                          </Binding.ValidationRules>
                    </Binding>
           </DataGridTextColumn.Binding>
</DataGridTextColumn>

前台代码如上，在 DataGrid的一列里加了非空验证，当输入为空时会显示红色边框提示，但是在后台不知道怎么获取到前台是不是有验证错误。谢谢！