Datagrid view another colors

on Validating
 dgv.Rows(e.RowIndex).Cells(e.ColumnIndex).Style.BackColor = Color.Red

example

 Private Sub dgv_CellValidating(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellValidatingEventArgs) Handles dgv.CellValidating

        ' Don't try to validate the 'new row' until finished
        ' editing since there
        ' is not any point in validating its initial value.
        If dgv.Rows(e.RowIndex).IsNewRow Then Return
       
        'add validation that value in the cell is numeric
        If IsNumeric(e.FormattedValue) Then
         'check condition
         If e.FormattedValue < 0 Then
              dgv.Rows(e.RowIndex).Cells(e.ColumnIndex).Style.BackColor = Color.Red
         End If
        End If

Why do we always have to make assumptions about data grid type?  That is code for a WinForms DataGridView, but there is the 1.1 ASP.NET DataGrid, ASP.NET 2.0 GridView, and the plain ol' WinForms DataGrid for both 1.1 and 2.0.

Bob

Check this link to see if this is want you are looking for...
https://www.experts-exchange.com/questions/22477105/Datagridview-multi-color-cell-text.html

This solutions doesn't work in my case....
I fill this datagrid view from datatable