Error: Index was out of range. How do I solve it ?

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Error: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index . I got this error when I was selecting last row on gridview to update the data

Posted 17-Nov-14 18:55pm

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Jim Meadors 18-Nov-14 1:27am

If you are using Count in accessing your data, subtract 1 to convert it to Index.

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Sergey Alexandrovich Kryukov · Accepted Answer · 2014-11-17T19:18:00

Solution 1

This case is probably the simplest for debugging. Run it under the debugger and locate the line where the exception is thrown. If will show the line where you access something by index. Expect its value.

That's all.

—SA

Posted 17-Nov-14 19:18pm

Sergey Alexandrovich Kryukov