Delete a row in Gridview

Question

I want to delete a row using OnRowDeleting on GridView.. I have tried Different codes from internet but nothing works for me.. Help me Please!! This is my code: ASPX file::

<script type="text/c#" runat="server">
protected void BtnUpload_Click(object sender, EventArgs e)
{
    if (Request.Files != null)
    {
        foreach (string file in Request.Files)
        {
            var uploadedFile = Request.Files[file];
            if (uploadedFile.ContentLength > 0)
            {
                var appData = Server.MapPath("~/");
                var fileName = Path.GetFileName(uploadedFile.FileName);
                uploadedFile.SaveAs(Path.Combine(appData, fileName));
            }
        }
    }
} //Some code here

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"  OnRowCommand="GridView1_RowCommand" OnRowDeleting="GridView1_RowDeleting"   CellPadding="4" ForeColor="#333333" GridLines="None" Width="155px">



        <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
        <Columns>

            <asp:TemplateField >
                <ItemTemplate>

     <asp:FileUpload ID="FileUpload1" runat="server" /> 
     </ItemTemplate>
                </asp:TemplateField>
            <asp:ButtonField CommandName="Uploader" ButtonType="Button" Text="Upload" HeaderText="Upload" />
            <asp:CommandField ShowDeleteButton="True" ButtonType="Button" HeaderText="Delete"  />
        </Columns>
        <EditRowStyle BackColor="#999999" />
        <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
        <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
        <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
        <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
        <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
        <SortedAscendingCellStyle BackColor="#E9E7E2" />
        <SortedAscendingHeaderStyle BackColor="#506C8C" />
        <SortedDescendingCellStyle BackColor="#FFFDF8" />
        <SortedDescendingHeaderStyle BackColor="#6F8DAE" />


       </asp:GridView>
      <asp:Button ID="Button1" runat="server" Text="Add New Row" OnClick="Button1_Click" />
     <asp:Panel ID="pnlInfo" runat="server">
     </asp:Panel>


       <asp:LinkButton ID="BtnUpload" runat="server"  Text="Upload" OnClick="BtnUpload_Click" />
        //some code here

and this is ASPX.CS

public partial class WebForm4 : System.Web.UI.Page
{
   DataTable dt;
  protected  void Page_Load(object sender, EventArgs e)
    {



    }

  protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs ea)
  {

      if(ea.CommandName=="Uploader")
      {
          //GridViewRow grv = (GridViewRow);
          int i = Convert.ToInt32(ea.CommandArgument);

          FileUpload fileUpload = GridView1.Rows[i].FindControl("FileUpload1") as FileUpload; 

          if (fileUpload.HasFile)
          {
              try
              {
                  string filename = Path.GetFileName(fileUpload.FileName);
                  fileUpload.SaveAs(Server.MapPath("~/") + filename);

              }
              catch (Exception ex)
              {
                  String se = ex.Message;
              }
          }
      }

  }






     protected virtual void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs ea)
  {
       //Suggest Code Here..

  }

     private void AddNewRow()
     {
          dt = new DataTable();

         dt.Columns.Add("sno");
         dt.Columns.Add("name");
         foreach (GridViewRow gvRow in GridView1.Rows)
         {
             DataRow dr = dt.NewRow();
             //dr["sno"] = ((Label)gvRow.FindControl("lblSno")).Text;
             //dr["name"] = ((Label)gvRow.FindControl("txtName")).Text;
             dt.Rows.Add(dr);
         }

         DataRow dr1 = dt.NewRow();
         dr1["sno"] = "";
         dr1["name"] = "";
         dt.Rows.Add(dr1);

         GridView1.DataSource = dt;
         GridView1.DataBind();

     }

     protected void Button1_Click(object sender, EventArgs e)
     {
         AddNewRow(); 
     }



     }
    }

Please Help...

Please describe what problem you are having. Are you getting some error for example or your line of code is not executed? Also look at the site here quite a lot of similar questions. For example: http://stackoverflow.com/questions/7226548/how-to-delete-row-in-gridview-using-rowdeleting-event — TarasB, Oct 21 '14 at 20:30
Thanx for reply @TarasB I want to delete the row of gridview with this handler but it is not working.. I used the code:: protected virtual void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs ea) { int i = Convert.ToInt32(ea.RowIndex); GridView1.DeleteRow(i); } It gives StackOverFlowException was unhandled.. and thanx for suggestion i tried that before it doesnot work for me. — Himanshu Bisht, Oct 21 '14 at 20:58
since you are getting StackOverflowException you are likely to be at the right forum :) — TarasB, Oct 21 '14 at 21:32

score 1 · Accepted Answer · answered Oct 21 '14 at 21:37

I'd recommend you to work with the bound data while adding/deleting rows, not with the rows directly since you've chosen grid view. Code is much simpler then. Below is an example - note that I initialize there DataTable in a static scope (which is not a perfect place) - store it where you need - in memory/session, or in view state - depends on your task there.

public partial class WebForm4 : System.Web.UI.Page
{

    private static DataTable MyDataTable = new DataTable();

    static WebForm4()
    {
        MyDataTable.Columns.Add("sno");
        MyDataTable.Columns.Add("name");
    }
    private void AddNewRow()
    {
        MyDataTable.Rows.Add(MyDataTable.NewRow());
        GridView1.DataSource = MyDataTable;
        GridView1.DataBind();
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        AddNewRow();
    }

    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        MyDataTable.Rows.RemoveAt(e.RowIndex);
        GridView1.DataSource = MyDataTable;
        GridView1.DataBind();
    }
}

Hope that helped.

Thanx for the support @TarasB .. It works for me.. Problem was the DataTable Declaration and yes StackOverflowException is removed at StackOverflow :) :).. All thanx to you.. — Himanshu Bisht, Oct 22 '14 at 04:38

Delete a row in Gridview

1 Answers1