Grid RowCommand

protected void gvwtest_RowCommand(object sender, GridViewCommandEventArgs e)
{

    if (e.CommandName == "Insert")
    {
    TextBox txtName = gvwtest.FooterRow.FindControl("txtName") as TextBox;
    if (txtDepartmentName.Text == "")
    {
        DisplayMessage("Please Enter Name");
        return;
    }
    //create object from Bussiness layer
    Test_BL oTest_BL = new Test_BL();
    int maxid = oTest_BL.GetMaxId() + 1;
    lblMaxId.Text = maxid.ToString();
    lblMaxId.Visible = false;
   
    Test_Info oTest_Info = new Test_Info();
    oTest_Info.Id = Convert.ToInt32(lblMaxId.Text);

    oTest_Info.Name = txtName.Text.Trim();

       int Result = oTest_BL.insertName(oTest_Info.Id,oTest_Info.Name);

       if (Result == 1)
       {
       DisplayMessage("Saved successfully");
       }
       else
    {
        DisplayMessage("Same  Name Already Exist");
    }
   
    //Filling gridview once again after insert
    FillGrid();

    }

}