菜单项的索引超出范围 [英] Index out of bounds for menu items

问题描述

大家好，

我有一个"System.ArgumentOutOfRangeException:索引必须在列表的范围内."例外.我想在Site.Master中创建一个菜单，该菜单可以在登录特殊用户时设置一个额外的Item.

Site.Master:

Hey all,

i have a "System.ArgumentOutOfRangeException: Index must be within the bounds of the List." exception. I want to create a menu in the Site.Master, which can set an extra Item when a special user is loged in.

Site.Master:

<div class="menu">
    <asp:Menu ID="Menu1" runat="server"

     EnableViewState="false"  

     Orientation="Horizontal" >
    
</div>

Site.Master.cs:

Site.Master.cs:

protected void Page_Load(object sender, EventArgs e)
{
       String User = Context.User.Identity.Name.Split(new Char[] { '\\' })[1];
       MenuItem item = new MenuItem();
       item.Text = "Configure";
       item.NavigateUrl = "~/Default.aspx";
       Menu1.Items.Add(item);
       if (User.Equals(user1) | User.Equals(user2))
       {
           item.Text = "Appstore";
           item.NavigateUrl = "~/AppStore.aspx";
           Menu1.Items.Add(item);
       }
       item.Text = "About";
       item.NavigateUrl = "~/About.aspx";
       Menu1.Items.Add(item);
}

有人可以告诉我怎么了吗?

Can someone tell me what´s wrong?

推荐答案

您必须创建新的项目对象，而不是重复使用它.

试试这个:

You have to create new item object instead of reusing it.

Try this :

protected void Page_Load(object sender, EventArgs e)
{
       String User = Context.User.Identity.Name.Split(new Char[] { '\\' })[1];
       MenuItem item = new MenuItem();
       item.Text = "Configure";
       item.NavigateUrl = "~/Default.aspx";
       Menu1.Items.Add(item);
       if (User.Equals(user1) | User.Equals(user2))
       {
           item = new MenuItem();
           item.Text = "Appstore";
           item.NavigateUrl = "~/AppStore.aspx";
           Menu1.Items.Add(item);
       }
       item = new MenuItem();
       item.Text = "About";
       item.NavigateUrl = "~/About.aspx";
       Menu1.Items.Add(item);
}

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