CODEWITHSUNDEEP
c#asp.netexceptiondatatableindexoutofrangeexception
Anyname Donotcare
Anyname Donotcare

Reputation: 11393

how to check there is a row in specific index to avoid IndexOutOfRangeException

I want to to know how to check there is a row in specific index to avoid the following exception :

System.IndexOutOfRangeException

for example :

if (dtNew != null && dtNew.Rows.Count > 0 )
{
    if (dtNew.Rows[i][0] != null)
    {
        row["newEmp"] = dtNew.Rows[i][0];
    }
    else
    {
        row["newEmp"] = 0;
    }
}

What if dtNew has just a one row and the i = 3 !!

Upvotes: 0

Views: 426

Answers (1)

Jon Skeet
Jon Skeet

Reputation: 1500515

Well if you want to get to row i, you need to change your check from

&& dtNew.Rows.Count > 0

to

&& dtNew.Rows.Count > i

Currently you're only checking whether there are any rows - i.e. whether dtNew.Rows[0] is valid.

(Do you definitely need to check for dtNew being null? Is that a valid program state? Likewise is it valid for the row to exist but column 0 to not be populated? You may be able to make your code much simpler.)

Upvotes: 2

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