How do I Errase Error:Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

protected void DataList1_UpdateCommand(object source, DataListCommandEventArgs e)
{
    int Id;
    string name = string.Empty;
    string details = string.Empty;
    string website = string.Empty;            
    string address = string.Empty;
    string TextImg = string.Empty;
    //FileUpload imagepath=FileUpload.ReferenceEquals;
    SqlCommand cmd = new SqlCommand();


    try
    {
        name = ((TextBox)(e.Item.FindControl("txtEditName"))).Text;
        details = ((TextBox)(e.Item.FindControl("txtEditDetails"))).Text;
        address = ((TextBox)(e.Item.FindControl("txtEditaddress"))).Text;
        website = ((TextBox)(e.Item.FindControl("txtEditWebsite"))).Text;
        TextImg = ((TextBox)(e.Item.FindControl("txtEditImgpath"))).Text;
        
        //areaid = ((TextBox)(e.Item.FindControl("txtEditareaid"))).Text;
        FileUpload imagepath = ((FileUpload)(e.Item.FindControl("FileUploadImg")));

        
        Id = Convert.ToInt32(DataList1.DataKeys[e.Item.ItemIndex].ToString());
        con.Open();
        cmd = new SqlCommand("Team_SocialActivities_Edit", con);
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.AddWithValue("@Id", Id);
        cmd.Parameters.AddWithValue("@Name", name);
        cmd.Parameters.AddWithValue("@Details", details);
        cmd.Parameters.AddWithValue("@Address", address);
        cmd.Parameters.AddWithValue("@Website", website);
        
        //cmd.Parameters.AddWithValue("@Area_ID", areaid);
        Guid FileName = Guid.NewGuid();
        if (imagepath.FileName != "")
        {
            imagepath.SaveAs(Server.MapPath("~/Images/" + FileName + ".png"));
            cmd.Parameters.AddWithValue("@ImagePath", "~/Images/" + FileName + ".png");
        }
        else
        {
            cmd.Parameters.AddWithValue("@ImagePath", TextImg);
        }
        cmd.ExecuteNonQuery();
        DataList1.EditItemIndex = -1;
        BindData();
        ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert('Book record has been updated successfully');", true);
    }
    catch (Exception ex)
    {
        ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert('Oops!! Error occured : " + ex.Message.ToString() + "');", true);
    }