如何在asp.net菜单控件中使用for循环删除子项 [英] How to remove child item using for loop in asp.net menu control

问题描述

我正在使用asp.net菜单控件.
我无法删除超过2个子菜单​​项.我的索引超出范围.
但是，我在子菜单项中有6个以上的值..
为什么即使菜单计数中有该值，索引也会超出范围.
请给for循环删除每个子项...?
最近两个小时我在挣扎...?


看到我的错误代码
-----------------

I am using asp.net menu control.
i am not able to remove more than 2 child menu item. i am getting index out of range.
But, i have more than 6 values in the child menu items..
why i am getting index out of range even if the value is there in the menu count.
Pls. give the for loop to remove the every child item...?
i am getting struggle last two hours...?


see my error code
-----------------

For j As Integer = 0 To menuItemMaster.ChildItems.Count - 1  ==> 6 count will be there
               If menuItemMaster.ChildItems(j).Value = "0" Then
                   menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems.Item(0))
               End If
               If menuItemMaster.ChildItems(j).Value = "2" Then
                   menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems.Item(2))
               End If
               If menuItemMaster.ChildItems(j).Value = "3" Then
                   menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems.Item(3))
               End If
If menuItemMaster.ChildItems(j).Value = "4" Then
                   menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems.Item(4))  ==> Error : out of index range
               End If
           Next

推荐答案

亲爱的朋友，

试试这个，

Dear Friend,

Try this,

For j As Integer = 0 To menuItemMaster.ChildItems.Count - 1  ==> 6 count will be there
               If menuItemMaster.ChildItems(j).Value = "0" Then
                   menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems[j].Item(0))
               End If
               If menuItemMaster.ChildItems(j).Value = "2" Then
                   menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems[j].Item(2))
               End If
               If menuItemMaster.ChildItems(j).Value = "3" Then
                   menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems[j].Item(3))
               End If
If menuItemMaster.ChildItems(j).Value = "4" Then
                   menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems[j].Item(4))  ==> Error : out of index range
               End If
           Next

我已经改变了
menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems.Item(3))到 menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems [j] .Item(3))

希望这会对您有所帮助

I have changed
menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems.Item(3)) to menuItemMaster.ChildItems.Remove(menuItemMaster.ChildItems[j].Item(3))

Hope this will help you out

您好，

根据我的理解，在您的代码中，您使用的是for循环，它循环6次.

在您的第一个循环中，您将删除一些子项，并重复6次，然后引用已被删除的项.因此，您将获得索引超出范围的异常.

取而代之的是，您可以遍历并删除每个项目(如果它们与值无关).
希望这会有所帮助.

Hi,

As per my understanding, in your code you are using a for loop, which loops for 6 times say.

In your first loop you are removing few child items and this repeats for 6 times and you refer the items that are already removed.So you get a index out of range exception.

Instead you can loop through and remove each item at once if its irrespective of value.
Hope this helps.

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