[RESOLVED]Getting Column Names, Col and row count from datagrid

Hi,

I am trying to get the column names and col/row count from a datagrid but it seems that i am stucked. I have tried the following which i got from searching the forum but i got an error : An unhandled exception of type 'System.InvalidCastException' occurred in WindowsApplication1.exe
Additional information: Specified cast is not valid.

VB Code:

'Dg is a datagrid
 
        Dim dt As DataTable
        dt = Dg.DataSource
        MsgBox(dt.Rows.Count.ToString)
        MsgBox(dt.Columns.Count.ToString)

thanks for your time

Have you actually assigned a DataTable to the DataSource of the grid? If so you should use:

VB Code:

dt = DirectCast(dg.DataSource, DataTable)

If not then you'll need to get the object from the DataSource as it is and get the DataTable from that. Here are examples if you've used a DataSet or a DataView as the DataSource:

VB Code:

'For DataSet.
dt = DirectCast(dg.DataSource, DataSet).Tables(dg.DataMember)
 
'For DataView.
dt = DirectCast(dg.DataSource, DataView).Table

Ok..got it.. thanks jmcilhinney for the help.
You have been really helpful as i see that you try to help whenever you can.

thanks to all the guys who took their time to read my problems. Really appreciate it.