如何验证Lost Focus上的WPF Datagrid单元格以检查空值 [英] How to Validate WPF Datagrid Cell on Lost Focus to check null value

问题描述

我正在使用WPF工具包：Datagrid并使用EDM作为其itemsource。

当我更改网格中的第一个单元格时，EDM设计器类给我一个错误。

它的属性被绑定到源。

它给了我一个错误=这个属性不能设置为空值。

I am using WPF toolkit:Datagrid and using EDM as its itemsource.
EDM designer class is giving me an error while I change the first cell in the grid.
It's property is getting binded to the source.
It is giving me an error = "This property cannot be set to a null value."

dgFinancialYear.Columns.Add(new Microsoft.Windows.Controls.DataGridTextColumn { Header = "Financial Year", Binding = new Binding { Path = new PropertyPath("FinancialYear"),  ValidatesOnExceptions = true, ValidatesOnDataErrors = true,  UpdateSourceTrigger = System.Windows.Data.UpdateSourceTrigger.PropertyChanged, NotifyOnSourceUpdated = true, }, Width = 160 });

上面是网格列的代码，WPF工具包中没有任何单元格更改或单元格编辑结束事件：Datagrid





任何帮助都将受到高度赞赏。

Above is the code for the grid column and there is no any cell change or cell edit ending event in WPF toolkit:Datagrid


Any help will be highly appreciated.

推荐答案

private void dgFinancialYear_CellEditEnding(object Sender,DataGridCellEditEndingEventArgs e)
{
    if(getCurrentCellValue((TextBox)e.EditingElement)=="")
     {
         e.Cancel=true;
     }
           
}
private string getCurrentCellValue(TextBox txtCurCell)
{
    return txtCurCell.Text;
}

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