To assign datarow with new value in C#

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iam looking into datatable and fetching line by line,

iam having 50 length values. i want to assign 10th length value as "text".

but it is not stored in datarow after assigned

foreach (DataRow row in dtSource.Rows)
                   {


                           if (row.ItemArray[17].ToString().Length > 32)
                           {
                               string ss=   "text";
                               row.ItemArray[17] = ss; // here it is not added in itemarray
                           }


                       }

                   }

What I have tried:

foreach (DataRow row in dtSource.Rows)
                   {


                           if (row.ItemArray[17].ToString().Length > 32)
                           {
                               string ss=   "text";
                               row.ItemArray[17] = ss; // here it is not added in itemarray
                           }


                       }

                   }

Posted 3-May-18 4:42am

Vinodh Muthusamy

Updated 3-May-18 7:52am

v2

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Richard MacCutchan · Answer 1 · 2018-05-03T04:52:00

Solution 1

The reference row.ItemArray returns the contents of the row as a new ItemArray. So when you change the value you only change it in the array, not in the row. See DataRow.ItemArray Property (System.Data)[^].

Posted 3-May-18 4:52am

Richard MacCutchan

Comments

Maciej Los 3-May-18 13:47pm

5ed!

Maciej Los · Answer 2 · 2018-05-03T07:54:00

Solution 2

Try this:

C#

foreach (DataRow row in dtSource.Rows)
{
       if (row[17].ToString().Length > 32)
       {
            string ss=   "text";
            row[17] = ss;
       }
}

See: DataRow Class (System.Data)[^]

Posted 3-May-18 7:54am

Maciej Los