FpSpread1.ActiveSheetView.DataSourceID = "MyDS";
string s = FpSpread1.ActiveSheetView.DataSourceID;
string msg = s;
Response.Write("alert('" + msg + "')");
FpSpread1.ActiveSheetView.DataSourceID = "MyDS"
Dim s As String = FpSpread1.ActiveSheetView.DataSourceID
Dim msg As String = s
Response.Write("alert('" & msg & "')")