Server Error in '/' Application.

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

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

Source Error:


Line 133:
Line 134:        ddlLoaiSanPham.Items[0].Text = "Nhóm sản phẩm";
Line 135:        ddlLoaiSanPham.Items.RemoveAt(1);
Line 136:        ddlLoaiSanPham.SelectedValue = _menuUserId.ToString();
Line 137:

Source File: c:\inetpub\vhosts\cdm.com.vn\httpdocs\Controls\Product\ProductListing.ascx.cs    Line: 135

Stack Trace:


[ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index]
   System.Collections.ArrayList.RemoveAt(Int32 index) +12909694
   System.Web.UI.WebControls.ListItemCollection.RemoveAt(Int32 index) +17
   Controls_Product_ProductListing.LoadFilterControl() in c:\inetpub\vhosts\cdm.com.vn\httpdocs\Controls\Product\ProductListing.ascx.cs:135
   Controls_Product_ProductListing.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\cdm.com.vn\httpdocs\Controls\Product\ProductListing.ascx.cs:35
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0