public void fill() { SqlCommand cmd = new SqlCommand("select * from school ",con ); con.Open(); SqlDataReader rd = cmd.ExecuteReader(); GridView1.DataSource = rd; GridView1.DataBind(); con.Close(); } protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { fill(); } protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { int id = int.Parse(((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text); string stu =((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text; int age = int.Parse(((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text); SqlCommand cmd = new SqlCommand("UPDATE school SET stu_name=@stu_name,age=@age where id=@id ", con); cmd.Parameters.Add(new SqlParameter("@id", id)); cmd.Parameters.Add(new SqlParameter("@stu_name", stu)); cmd.Parameters.Add(new SqlParameter ("@age",age)); con.Open(); cmd.ExecuteNonQuery(); con.Close(); GridView1.EditIndex = -1; fill(); }
cmd.CommandType = CommandType.Text;
var
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