public frm_ChonBanh(frm_DonHang parent) { InitializeComponent(); DataColumn column; column = new DataColumn(); column.DataType = typeof(int); column.ColumnName = "MSB"; tableBanh.Columns.Add(column); var key = new DataColumn[1]; key[0] = column; column = new DataColumn(); column.DataType = typeof(string); column.ColumnName = "TENBANH"; tableBanh.Columns.Add(column); column = new DataColumn(); column.DataType = typeof(int); column.ColumnName = "GIA"; tableBanh.Columns.Add(column); column = new DataColumn(); column.DataType = typeof(int); column.ColumnName = "SOLUONG"; tableBanh.Columns.Add(column); tableBanh.PrimaryKey = key; this.parent = parent; }
private void donHangToolStripMenuItem_Click(object sender, EventArgs e) { if (Application.OpenForms["frm_DonHang"] == null) { frm_DonHang nv = new frm_DonHang(); nv.MdiParent = this; nv.Show(); } else { Application.OpenForms["frm_DonHang"].Activate(); } }