如何遍历下拉菜单?

[lf44785170]

在一个自定义控件里边,想做成像窗口菜单那样,多选一的效果

this.选择ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
this.全部展开ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
this.全部合拢ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();

this.选择ToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.全部合拢ToolStripMenuItem,this.全部展开ToolStripMenuItem});

//菜单单击事件,设置选择点击菜单为 选择
void newmenu_Click(object sender, EventArgs e)
{
ToolStripMenuItem menu = (ToolStripMenuItem)sender;
menu.Checked = true
}

问题是下面的遍历不能取消所有原来选择的,只有 Enabled 却没有 Checked
for (int c = 0; c<选择ToolStripMenuItem.DropDownItems.Count;c++ )
{
选择ToolStripMenuItem.DropDownItems[c].Enabled = false;
}


有什么方法全部设置 DropDownItems 里边 Checked = false ?

[初吻给了烟]

应该这样的
for (int c = 0; c <选择ToolStripMenuItem.DropDownItems.Count;c++ )
{
选择ToolStripMenuItem.DropDownItems[c].Checked = false;
}

[sisen]

for (int c = 0; c <选择ToolStripMenuItem.DropDownItems.Count;c++ )
{
ToolStripMenuItem tsmi=(ToolStripMenuItem)选择ToolStripMenuItem.DropDownItems[c];
tsmi.Checked = false;
}
你要转换一下的。

[sisen]

for (int c = 0; c <选择ToolStripMenuItem.DropDownItems.Count;c++ )
{
ToolStripMenuItem tsmi=选择ToolStripMenuItem.DropDownItems[c] as ToolStripMenuItem;
if (tsmi==null)
continue;
tsmi.Checked = false;
}
你要转换一下的。上面的代码有BUG，现在进行了一次修正。

[lf44785170]

谢谢 sisen ,改了果然成功,哈哈,心情好多了!