private void BtnClick_Click_1(object sender, EventArgs e) { dgAttendance.Columns.Clear(); GetData("select empname from employee"); DataGridViewColumn cb = new DataGridViewColumn(); DataGridViewCell cell = new DataGridViewTextBoxCell(); cb.HeaderText = "Session"; cb.Name = "Session"; cb.Visible = true; cb.Width = 70; cb.CellTemplate = cell; dgAttendance.Columns.Add(cb); int days = DateTime.DaysInMonth(Convert.ToInt32(cmbYear.SelectedItem), Convert.ToInt32(cboMonths.SelectedIndex + 1)); for (int i = 1; i <= days; i++) { DataGridViewColumn cb1 = new DataGridViewColumn(); DataGridViewCell cell1 = new DataGridViewTextBoxCell(); cb1.HeaderText = Convert.ToString(cboMonths.Text) + i; cb1.Name = Convert.ToString(cboMonths.SelectedIndex) + i; cb1.Visible = true; cb1.Width = 70; cb1.CellTemplate = cell1; dgAttendance.Columns.Add(cb1); } }
DataRelation
DataColumn
var
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