Error checking for Dataset values

Question

How do i validate the entries to a dataset before updating the table. DataSet changedData = dataSet11.GetChanges(); I cannot iterate through each row that has been added when i use the above statement. I tried using the foreach but its not accessible. Is there any other way to validate data input? Thanks

Andrzej Wegierski · Answer

May be GetChanges() returns null - there are no changed rows etc? Or - may be You try to examine deleted rows without using RowVersion? if(changedData!=null && changedData.Contains(myTable)) foreach(DataRow myRow in changedData.myTable.Rows) { object myFieldValue; if(dr.RowState==DataRowState.Deleted) myFieldValue=myRow[myFieldNameDataRowVersion.Original]; else myFieldValue=myRow[myFieldName]; }