The GridView 'GridView1' fired event RowEditing which wasn't handled.

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VS2005

C#

ASP.NET

Visual-Studio

hi all,

I am developing web application using asp.net the problem comes when i want the user to edit data on the gridview, it's giving me a follow error ,

The GridView 'GridView1' fired event RowEditing which wasn't handled.

my code c#:

 protected void GridView1_RowEditing(object sender, System.Web.UI.WebControls.GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        bindgrid();
    }

    protected void GridView1_RowCancelingEdit(object sender, System.Web.UI.WebControls.GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        bindgrid();

    }


    protected void GridView1_RowUpdating(object sender, System.Web.UI.WebControls.GridViewUpdateEventArgs e)
    {
        GridViewRow row = (GridViewRow)GridView1.Rows[e.RowIndex];
        TextBox TxtReference = (TextBox)row.FindControl("TxtRefName");
        TextBox TxtDestination = (TextBox)row.FindControl("TxtDestination");
        Label LblAccess = (Label)row.FindControl("LblAccNo");
        if (string.IsNullOrEmpty(TxtDestination.Text))
        {
            //LblStatus.Text = "Destination number cannot be empty"
            Response.Write("<script language='javascript'>alert('Destination number cannot be empty');</script>");
            GridView1.EditIndex = -1;
            bindgrid();
        }
        else
        {
            string[] result1 = new string[2];
          result1= result1 = clsObj.FnUpdatedAccessNo(Convert.ToString(Session["User_id"]), LblAccess.Text.Trim(), TxtDestination.Text.Trim(), TxtReference.Text.Trim());
            GridView1.EditIndex = -1;
            bindgrid();
            if (result1[0] == "0")
            {
                
                Response.Write("<script language='javascript'>alert('Unable to process your request..Please try again later');</script>");
            }
}
}

protected void GridView1_PageIndexChanging(object sender, System.Web.UI.WebControls.GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        bindgrid();
    }

my asp.net code is:

<asp:GridView ID="GridView1" runat="server" BackColor="#CCCCCC" BorderColor="#999999"
            BorderStyle="Solid" BorderWidth="3px" CellPadding="4" CellSpacing="2" ForeColor="Black" AutoGenerateColumns="False" AllowPaging="True" PageSize="25">
            <RowStyle BackColor="White" />
            <FooterStyle BackColor="#CCCCCC" />
            <PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />
            <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
            <HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
            <Columns>
                   <asp:TemplateField>
                    <HeaderTemplate>
                       <label style="font-weight:bold;font-size:small">Your unique 0208 Number to dial
                       </label>

                    </HeaderTemplate>
                    <ItemTemplate>
                        <asp:Label ID="LblAccNo" runat="server" Font-Bold="True" Text='<%#Eval("Access") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField>
                    <HeaderTemplate>
                      <label style="font-weight:bold;font-size:small"> Destination Number </label>
                    </HeaderTemplate>
                    <EditItemTemplate>
                        <asp:TextBox ID="TxtDestination" runat="server" Text='<%#Bind("divertedto")%>'></asp:TextBox>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="LblDestination" runat="server" Font-Bold="True" Text='<%#Eval("divertedto")%>'>
                        </asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField>
                    <HeaderTemplate>
                       <label style="font-weight:bold;font-size:small">Reference Name</label>
                    </HeaderTemplate>
                    <EditItemTemplate>
                        <asp:TextBox ID="TxtRefName" runat="server" Text='<%#Bind("Name_of_diversion")%>'>
                        </asp:TextBox>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="LblRefName" runat="server" Font-Bold="True" Text='<%#Eval("Name_of_diversion")%>'>
                        </asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:CommandField ShowEditButton="True" />
            </Columns>
            <PagerSettings Mode="NumericFirstLast" />
        </asp:GridView>