Question

I want to know how to write expression in data table to concatenate two integer type columns. Because when i try with ‘+’ it adds the two integers.

Thanks in advance.

Answer 1

If you want to set the expression of the result column. try this.

DataTable table = new DataTable();

table.Columns.Add("OrderCount",typeof(int));

table.Columns.Add("OrderPrice",typeof(int));

table.Rows.Add(new object[] { 1, 1 });

table.Rows.Add(new object[] { 2, 3 });

table.Rows.Add(new object[] { 4, 5 });

table.Columns.Add("Result", typeof(string));

table.Columns["Result"].Expression = "Convert(OrderCount, 'System.String') + OrderPrice";