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DataColumn customersColumn = new DataColumn("customeramount",typeof(int));
dt.Columns.Add(customersColumn);
DataColumn protocolsColumn = new DataColumn("protocolamount", Type.GetType("System.Int32"));
dt.Columns.Add(protocolsColumn);
DataTable dt = new DataTable("Table1");
DataColumn customersColumn = new DataColumn("customeramount", typeof(int));
dt.Columns.Add(customersColumn);
DataColumn protocolsColumn = new DataColumn("protocolamount", Type.GetType("System.Int32"));
dt.Columns.Add(protocolsColumn);
DataRow r1 = dt.NewRow();
r1.ItemArray = new object[] { 1,2};
dt.Rows.Add(r1);
DataRow r2 = dt.NewRow();
r2.ItemArray = new object[] { 3, 4 };
dt.Rows.Add(r2);
this.dataGridView1.DataSource = dt;
this.dataGridView1.Update();