menuItem在按钮单击时显示null [英] menuItem showing null on a button click

问题描述

当我在按钮上动态添加MenuItem时，单击其工作但在创建MenuItem后显示错误我尝试获取名称mnuAAA但我得到空值。

When i adding MenuItem dynamically on a button click its working but error showing after creating MenuItem i try to get the name "mnuAAA" but i am getting null value.

MenuItem newMenuItem1 = new MenuItem();
MenuItem newMenuItem2 = new MenuItem();
MenuItem newExistMenuItem = (MenuItem)this.mnuTest.Items[0];
newMenuItem1.Header = "AAA";
newMenuItem1.Name = "mnuAAA";
newExistMenuItem.Items.Add(newMenuItem1);
MenuItem newExistMenuItem2 = (MenuItem)this.mnuTest2.Items[1];
newMenuItem2.Header = "BBBBBB";
newMenuItem2.Name = "mnuBBBBB";
newExistMenuItem2.Items.Add(newMenuItem2);





MenuItem mnuMenu = (MenuItem)this.FindName("mnuAAA");
MessageBox.Show(mnuMenu.Name.ToString());

感谢adavance

Thanks in adavance

推荐答案

这应该有效 - 只是验证了。问题可能是您在重新呈现菜单之前检查。因此，创建第二个测试按钮，动态添加菜单，从另一个事件处理程序/命令调用Findname，它应该工作。

This should work - just verified. The Problem may be that you check before the menu is re-rendered. So create a second "Test-Button", add your menu dynamically, call Findname from another event-handler/command and it should work.

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