I have a gridview which contains a checkbox field that I hae binded to my datasource. I added a checkedchanged event to the checkbox field which does fire but I cannot get the code correct to capture any data contained in the row that the checkbox is in.

I tried this:

Protected Sub chbTracking_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim test As String

        test = gvClients.SelectedDataKey.Value.ToString

        Label1.Text = test

and have also read numerous online gridview examples but I can figure out had to identify the selected row or cell values that I need.