Question

I would like to copy DataColumn from tableA to table B:

As I think it should be like this:

TableA in perdefined.

DataColumn[] dataColum = new
DataColumn[TableA .Columns.Count];

TableA .Columns.CopyTo(dataColum, 0);

DataTable TableB = new DataTable();

TableB .Columns.AddRange(dataColum);
//

=> but it raised an error at the line error, ID is belong to another table (in tableB)…

As I dont like another way:

DataTable TableB = TableA.Copy();
TableB.Clear(); // => getting
structure of table A, not nice this
way

Any ideas? Thanks in advance!

Answer 1

You can use DataTable.Clone method that copies only structure (i.e all columns & constraints) unlike Copy that copies data also.

In case you need to copy a particular column then you need to use code such as TableB.Columns.Add(columnToAdd.ColumnName, columnToAdd.DataType)