从ASP.NET C＃中的DropDownList删除项目

Question

I have a DropDownList in my ASPX page:

<asp:DropDownList ID="ddlGroups" runat="server" Width="200px" AppendDataBoundItems="true"
            AutoPostBack="true" OnSelectedIndexChanged="ddlGroups_SelectionIndexChanged">
            <asp:ListItem Text="All" Value="0"></asp:ListItem>
            <asp:ListItem Text="Pending" Value="1"></asp:ListItem>
            <asp:ListItem Text="Completed" Value="2"></asp:ListItem>
</asp:DropDownList>

Also based on a condition I am populating the DropDownList in my code behind :

  List<Status> lstStatus  = new List<Status>();
  lstStatus = GetStatus() //Get's the list from db
  if (lstStatus != null && lstStatus.Count > 0)
    {
        ddlGroups.DataSource = lstStatus;
        ddlGroups.DataTextField = "StatusDescription";
        ddlGroups.DataValueField = "StatusID";
        ddlGroups.DataBind();
       /* ddlGroups.
        ddlGroups.Items.Remove("Completed");*/
    }

When I do this, I do not want the DropDownList to be poulated from the ASP.NET page markup. Ie I want to remove the items added from the aspx code (only two of them).

Any help?

Answer 1

清除下拉列表并根据需要填充。

DropDownList1.Items.Clear(); 

Answer 2

            if (lstStatus != null && lstStatus.Count > 0)
            {
                ddlGroups.Items.Clear();
                ddlGroups.DataSource = lstStatus;
                ddlGroups.DataTextField = "StatusDescription";
                ddlGroups.DataValueField = "StatusID";
                ddlGroups.DataBind();
            }