gridview row index delete button not working?

See more:

C#

ASP.NET

hi all,
am facing one issue on my website.
it was developed by Asp.net with c# language
the problem i rise you that,
i cant able to delete my gridview row value by using autogenerate delete button.
its only happen in the IE browser
but i can able to delete other browser like chrome and firefox etc...
please give me a solution for this, its very kind helpful for my future.

my code is:

<asp:GridView ID="gvCLI" runat="server" AutoGenerateColumns="False"
             AllowPaging="True" DataKeyNames="CLI" onrowdeleting="delete" CssClass="text1nowidth"
                      Width="198px" BorderColor="#8D6B09" BorderStyle="Solid" OnPageIndexChanging="gvCLI_PageIndexChanging">
            <Columns>
                <asp:BoundField DataField="CLI" HeaderText="Number" >
                    <HeaderStyle BackColor="#8D6B09" ForeColor="White" />
                </asp:BoundField>
                <asp:CommandField ShowDeleteButton="True" >
                    <ControlStyle CssClass="text1nowidth" />
                    <HeaderStyle BackColor="#8D6B09" />
                </asp:CommandField>
            </Columns>
        </asp:GridView>

my delete code is:

protected void delete(object sender, GridViewDeleteEventArgs e)
{
 
string dgoldcli = gvCLI.DataKeys[e.RowIndex].Value.ToString();
//new cli is zero 'since we want to delete it we send 0
 
string[] result = new string[2];
// we check before allocation at stored procedure
// if CLI is valid or not so no need to check here
 

clsCommon clsobj = new clsCommon();
result = clsobj.fnChangeTalkCLI(Session["talkuser_id"].ToString(), dgoldcli, "0");
 

if (result[0] == "1")
{
//successfully changed
lblStatus.Text = "Number unregistered successfully .";
//msg to display"
string cliresult;
cliresult = clsobj.getTalkCli(Session["talkuser_id"].ToString());
if (cliresult == "1")
{
DataTable dt = clsobj.returnCLI();
gvCLI.DataSource = dt;
gvCLI.DataBind();
}
 
else
{
lblStatus.Text = "Your registered numbers list is empty";

}
 

}
else
{
//error message
lblStatus.Text = result[1];
}
 
string strscript = null;
if (result[0] != "1")
{
//failed to alloc
strscript = "<script language=JavaScript>" + "alert(\"Cannot delete Number\")</script>";
if ((!ClientScript.IsStartupScriptRegistered("clientScript")))
{
ClientScript.RegisterStartupScript(this.GetType(), "clientScript", strscript);
}
}
}

thanks in advance..