I have a web form with several grids on it, and a procedure that cycles
through each grid to do a number of tasks, using for next, and am getting a
"Specified cast is not valid" error when I attempted to put the grid names
in an arraylist.

For sample purposes, we'll name the grids grid1, grid2, grid3.

when I manually set each grid, it works fine:

       dg = grid1
       GetData(dg)
       dg = grid2
       GetData(dg)
       dg=grid3
       GetData(dg)

but when I attempted to put the grids in an arraylist, I get the cast error:

   arrGrids.add("grid1")
   arrGrids.add("grid2")
   arrGrids.add("grid3")

   for i = 0 to arrGrids.Count-1
       dg = ctype(arrGrids(i), DataGrid)
       GetData(dg)
   next

How else can I do this?  tia