How to Validate WPF Datagrid Cell on Lost Focus to check null value

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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."

C#

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 });

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.

Posted 29-May-12 21:52pm

WaseemSiddiqui

Updated 17-Feb-16 23:10pm

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Member 9883672 · Answer 1 · 2016-02-17T23:10:00

Solution 1

C#

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

Posted 17-Feb-16 23:10pm

Member 9883672

Updated 17-Feb-16 23:37pm

v2