跨线程操作无效:控制从其创建的线程以外的线程访问的“treeview”。 [英] Cross-thread operation not valid: control 'treeview' accessed from a thread other than the thread it was created on.
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问题描述
On client I have a tree node on right click on deploy command which publishes a file to my server.
So on clicking the tree node I will check if the tree ode name is the same as of file name if same ok else I will try to update the object name through server reply. Which here means I have got the server reply and trying to setting the "Text" but at the time of setting the text here in my case :
BaseObject.GetNodeText(Me.QueryConfig)
Is getting executed and throwing me error
"Cross-thread operation not valid: Control 'Treeview' accessed from a thread other than the thread it was created on
"
If Not OverrideDefaultDisplayText Then
Text = BaseObject.GetNodeText(Me.QueryConfig)
Else
Text = BaseObject.GUIDisplayAs
End If
this all happens inside a method called refresh
Can someone please suggest what I need to do
Error:
Cross-thread operation not valid: Control 'Treeview' accessed from a thread other than the thread it was created on
我是什么尝试过:
尝试过使用处理程序但是d idnt为我工作
What I have tried:
have tried using handlers but that didnt worked for me
推荐答案
错误很明确:你只能从UI线程访问控件 - 你的代码没有在UI线程上运行所以你不能直接访问控件。
要做到这一点,你需要调用控件: Control.Invoke方法(委托)(System.Windows.Forms) [ ^ ]
The error is pretty explicit: you can only ever access controls from the UI thread - your code is not running on the UI thread so you cannot directly access the control.
To do that, you need to Invoke the control: Control.Invoke Method (Delegate) (System.Windows.Forms)[^]
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