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Thread: Index was out of range. Must be non-negative....

  1. Oct 20th, 2005, 08:24 PM #1
    modernthinker
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    Index was out of range. Must be non-negative....

    Hi,

    I get this error :

    Code:
    Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
    Error is on this line:

    Code:
    string rowID;

rowID = DataGridSpirits.DataKeys[e.Item.ItemIndex].ToString();
    I have a datagrid, i have a delete and update buttons. This error occurs on both of these events. SOmething to do with returning the row number. It worked earlier, i didn't change anything???

    Any help greatly appreciated.
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  2. Oct 21st, 2005, 09:45 AM #2
    dj4uk
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    Re: Index was out of range. Must be non-negative....

    Sounds silly but have you set a DataKeyField for the DataGrid?

    If you have could you post the full method that handles the update and also the DataGrid declaration.

    DJ

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  3. Oct 21st, 2005, 11:48 AM #3
    Lord_Rat
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    Re: Index was out of range. Must be non-negative....

    Additionally, make sure your code is only executing on a Row or AlternatingRow and not on the headers or footers.

    Test the value of e.Item.ItemIndex before you attempt to use it
    Need to re-register ASP.NET?
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  4. Oct 21st, 2005, 02:04 PM #4
    modernthinker
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    Re: Index was out of range. Must be non-negative....

    Thanks to both of you!

    For some bizarre reason the DataKeyField was deleted from my webForm, probably due to my clumsyness. Anyway all working now!

    Thanks
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