An unhandled exception of type 'System.ArgumentException' occurred in System.Data.dll

C# i am getting exception :
An unhandled exception of type 'System.ArgumentException' occurred in System.Data.dll
Column "OLDOUTNO" does not belong to table

Solution :
1. Manually add the column field to the DataTable object of Gridview, dtMain in this case is datatable object, The method is as follows:

1. if (!dtMain.Columns.Contains("OLDOUTNO"))
2. {
3. dtMain.Columns.Add("OLDOUTNO", typeof(string));
4. }

2. If you want to remove the "OLDOUTNO" column field after you add it, you can use the following methods:

1. if (dtMain.Columns.Contains("OLDOUTNO"))
2. {
3. dtMain.Columns.Remove("OLDOUTNO");
4. }

complete! good luck !