Index Out of Range Exception

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Hello ALL,

Here I got the Exception:--
Index was out of range. Must be non-negative and less than the size of the collection.\r\nParameter name: index exception

My Code IS:

I got the
caseStatusHistoryInfoList.Count value is 0,

C#

if (caseStatusHistoryInfoList.Count <= 1 && caseStatusHistoryInfoList[0].NewStatusDescription == "New Case")
{
                        dtlstatusHist.Visible = false;
                        imgStatusHistory.Visible = false;
}

Plz give me solution..

Posted 30-Nov-11 22:41pm

madhuri@mumbai

Updated 30-Nov-11 22:44pm

uspatel

v2

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uspatel 1-Dec-11 4:44am

pre tag added

4 solutions

Solution 2

Place a brake point on the "if" condition and check the size of

caseStatusHistoryInfoList

variable. You should check if this variable contains at least one element in it before accessing its index.

Posted 30-Nov-11 22:52pm

saini arun

Solution 3

Use your debugger, have a look at the collection

Is caseStatusHistoryInfoList collection properly populated. Is there definitely an item in the collection at index 0

caseStatusHistoryInfoList[0] == "New Case"

That line will fail and throw the exception you are seeing if your collection count is zero. Your test for caseStatusHistoryInfoList.Count <= 1 is a bit strange really.

Posted 30-Nov-11 22:52pm

Dylan Morley

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Abhinav S · Accepted Answer · 2011-11-30T22:51:00

Solution 1

You are trying to access the first element in caseStatusHistoryInfoList i.e. caseStatusHistoryInfoList[0] while the count is actually 0. Thus you get an error in the line.

Try checking for caseStatusHistoryInfoList.Count = 1 instead of caseStatusHistoryInfoList.Count <= 1 .

Posted 30-Nov-11 22:51pm

Abhinav S

member60 · Accepted Answer · 2011-11-30T22:52:00

Solution 4

try:

C#

if (caseStatusHistoryInfoList.Count == 1 && caseStatusHistoryInfoList[0].NewStatusDescription == "New Case")
{
                        dtlstatusHist.Visible = false;
                        imgStatusHistory.Visible = false;
}

or

Posted 30-Nov-11 22:52pm

member60