Why is the desired data not displayed after changing the value in the row of a column in the datagrid in WPF?

Question

Why is the desired data not displayed after changing the value in the row of a column in the datagrid in WPF?

I have a DataGrid in the C# WPF project and DataGrid's Itemsource fill from the code behind I set a default value for one of my columns but it does not display it until I double click on the column!

also in CellEndEdit I test to change the value of the next column, but it dint show it in real time until I double click it (Click to Edit it)

What have I tried after changing data :

DGR_SUB_INVOLST.Items.Refresh();  
  
DGR_SUB_INVOLST.BeginEdit();  
  
DGR_SUB_INVOLST.CommitEdit();  
  
DGR_SUB_INVOLST.InvalidateVisual();  
  
DGR_SUB_INVOLST.UpdateLayout();  

non of them work! please guide me

full info : why-is-the-desired-data-not-displayed-after-changing-the-value-in-the-row-of-a-c

Answer 1

modify the Cell as below:

Getting Column and Row Index:

private void DGR_SUB_INVOLST_BeginningEdit(object sender, DataGridBeginningEditEventArgs e)  
{  
        if (DGR_SUB_INVOLST != null)  
        {  
            if (DGR_SUB_INVOLST.Items.Count > 0)  
            {  
                OldRowitem = (INVOMonitor)DGR_SUB_INVOLST.CurrentItem;  
                DataGridColumn col1 = e.Column;  
                DataGridRow row1 = e.Row;  
                OldRowindex = ((DataGrid)sender).ItemContainerGenerator.IndexFromContainer(row1);  
                OldColumnindex = col1.DisplayIndex;  
            }  
        }  
}  

A method to get Cell:

private DataGridCell GetCellVal(string NAME_SUTUN,int ROWINEX)  
{  
        var TheCol = DGR_SUB_INVOLST.Columns.FirstOrDefault(c => c.SortMemberPath == NAME_SUTUN).DisplayIndex;  
        var DGCInf = new DataGridCellInfo(DGR_SUB_INVOLST.Items[ROWINEX], DGR_SUB_INVOLST.Columns[TheCol]);  
        var TheDGCell = PublicVRB.GetDataGridCell(DGCInf);  
        return TheDGCell;  
}  

use like:

private void DGR_SUB_INVOLST_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)  
{  
    if (DGR_SUB_INVOLST != null)  
    {  
        if (DGR_SUB_INVOLST.Items.Count > 0)  
        {  
               (e.Row.Item as INVOMonitor).CODE  = SomeValue;  
     ((TextBlock)GetCellConfig("Binding_Name", row_index).Content).Text = (e.Row.Item as INVOMonitor).CODE.ToString();  
        }  
    }  
}