private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e) { if (dataGridView1.Columns[e.ColumnIndex].Name == "Delete" && (e.RowIndex >= 0)) { try { if (MessageBox.Show("Are You Sure You Want to Delete this?", "Message", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes) { conn.Open(); int id = Convert.ToInt32(dataGridView1.Rows[e.RowIndex].Cells["GroupId"].Value); string m = String.Format("DELETE FROM [Group] Where Id = @Id "); SqlCommand command = new SqlCommand(m, conn); command.Parameters.Add(new SqlParameter("@Id", id)); int rows = command.ExecuteNonQuery(); if (rows != 0) { MessageBox.Show("Data deleted!"); this.Hide(); AddStudenttoExistinggrp r = new AddStudenttoExistinggrp(); r.Show(); } conn.Close(); } } catch (Exception ex) { MessageBox.Show(ex.Message); } conn.Close(); } if (dataGridView1.Columns[e.ColumnIndex].Name == "AssignStudent" && (e.RowIndex >= 0)) { panel1.Show(); } }
private void button6_Click(object sender, EventArgs e) { AddStudenttoExistinggrp h = new AddStudenttoExistinggrp(); h.Show(); }