当用户登录到我的应用程序，有我不希望每个用户看到的一些菜单项。所以，我想无论是禁用或使无形的菜单项。例如 fileToolStripMenuItem 中的第一个项目我的的MenuStrip ，当我尝试：

fileToolStripMenuItem.Enabled = FALSE; - 这不起作用 menuStrip.Items [0] .Enabled = FALSE; - 这确实工作

任何人都可以启发我，这里的区别是什么？

另外，我想应该能够从菜单项禁用下拉项目，但我不能做，要么。

这里的code：

 公共Form1中（）
        {
            的InitializeComponent（）;

            //一堆其他的code在这里

            如果（！login.ValidatedUser）
            {
                menuStrip1.Items [0]。可见=虚假的; //这个工程
                toolsToolStripMenuItem.Visible = FALSE; //这不
                btnStartResourceManager.Enabled = FALSE;
                listAvailableSizes.Enabled = TRUE;
                panelPicSet.Enabled = TRUE;
            }
        }
 

解决方案

fileToolStripMenuItem.Enabled = FALSE; 按预期工作。我想你想的InitializeComponent（）之前则禁用;调用。

 公开形式（）
{
    的InitializeComponent（）;
    fileToolStripMenuItem.Enabled = FALSE; //禁用所有的文件菜单
    saveasToolStripMenuItem.Enabled = FALSE; //禁用另存为菜单项中的文件菜单列表
}
 

When a user logs into my application, there are some menu items that I don't want every user to see. So I would like to either disable or make invisible the menu item. For example fileToolStripMenuItem is the first item in my menuStrip, when I try:

fileToolStripMenuItem.Enabled = false; - this does not work menuStrip.Items[0].Enabled = false; - this does work

Can anyone enlighten me as to the difference here?

Also, I would like to be able to disable a drop down item from one of the menu items, but I cannot do that either.

Here's the code:

public Form1()
        {
            InitializeComponent();

            // bunch of other code here

            if (!login.ValidatedUser)
            {
                menuStrip1.Items[0].Visible = false; // this works
                toolsToolStripMenuItem.Visible = false; // this does not
                btnStartResourceManager.Enabled = false;
                listAvailableSizes.Enabled = true;
                panelPicSet.Enabled = true;
            }
        }

fileToolStripMenuItem.Enabled = false; works as expected. I think you trying to disable it before InitializeComponent(); call.

public form()
{
    InitializeComponent();
    fileToolStripMenuItem.Enabled = false;//disables all file menu
    saveasToolStripMenuItem.Enabled = false; //disables save as menu item in file menu list
}