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John Bradley
265
Errors accessing Table rows when Group Columns enabled
posted

I'm having a weird problem or problems.  My Grid contains records and I can access the rows individually without any problems.  

Example:  if (gridTable.Rows[indexVar].Cells == null) ...

But as soon as I turn on Group Columns and try accessing rows in the grid, I get "object not set" for the above line of code.  I also get invalid index.  

Am I suppose to be navigating the table using a different collection of objects when the Group Columns is enabled? Or is there something I am not understanding about the re-arrangement of the grid and table rows when Grouping is turned on?

I am perplexed.

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  • 265
    posted

    FOR EXAMPLE:

    When Group Columns is turned OFF, the following line of code works just fine:


    if (gridTable.ActiveRow.Index == -1 || gridTable.Rows[gridTable.ActiveRow.Index].Cells == null)
    return;

    But if I turn on Group Columns, then I get the following error:

    "IndexOutOfRangeException" and this points to the value of .ActiveRow.Index in the 2nd half.  The value is 4 but the collection of Cells is reportedly 3.  That's not right because my sub-grid (if that's what I can call it) has 8 rows.  I click on row 5 which is Index 4 and that's when I get the silly error about the IndexOutOfRange.  NOTE:  MY COLUMN GROUPING HAS CREATED 3 GROUPS.

    Doesn't make sense to me.

Children