Windows Forms FAQ resources

5. Windows Forms Datagrid

5.31 How do I get the row or column that has been clicked on?

You can use the DataGrid's HitTest method, passing it a point in the grid's client coordinate system, and returning a HitTestInfo object that holds all the row and column information that you want.

[C#]

// X & Y are in the grid' coordinates. If they are in screen coordinates, call dataGrid1.PointToClient method

System.Drawing.Point pt = new Point(X, Y);

DataGrid.HitTestInfo hti = dataGrid1.HitTest(pt);

if(hti.Type == DataGrid.HitTestType.Cell)

{

MessageBox.Show(dataGrid1[hti.Row, hti.Column].ToString());

}

else if(hti.Type == DataGrid.HitTestType.ColumnHeader)

{

MessageBox.Show(((DataView) DataGrid1.DataSource).Table.Columns[hti.Column].ToString());

}

[VB.NET]

' X & Y are in the grid' coordinates. If they are in screen coordinates, call dataGrid1.PointToClient method

Dim pt = New Point(X, Y)

Dim hti As DataGrid.HitTestInfo = dataGrid1.HitTest(pt)

If hti.Type = DataGrid.HitTestType.Cell Then

MessageBox.Show(dataGrid1(hti.Row, hti.Column).ToString())

Else

If hti.Type = DataGrid.HitTestType.ColumnHeader Then 'assumes datasource is a dataview

MessageBox.Show(CType(DataGrid1.DataSource, DataView).Table.Columns(hti.Column).ToString())

End If