WinForm software, do not operate the UI in the thread

Source: Internet
Author: User

For WinForm Software, do not operate the UI in the thread, do not believe: Startform.checkforillegalcrossthreadcalls = false;

So, all the code is changed to the main thread delegate invocation way

Private delegate void Settexthandle (string id, string value);        private void Threadsettext (string id, String value)        {this            . Controls.find (ID, true) [0]. Text = value;        }        private void SetText (string id, String value)        {            if (this. InvokeRequired)            {this                . Invoke (New Settexthandle (Threadsettext), new object[] {ID, value});            }            else            {                threadsettext (ID, value);            }        }

2

The canonical form (C # Consumer) public delegate void Controlstringconsumer (Control control, string text);  Defines a delegate typepublic void SetText (Control control, string text) {    if (control. invokerequired) {        control. Invoke (New Controlstringconsumer (SetText), new Object[]{control, text});  Invoking itself    } else {        control. Text=text;      The "Functional part", executing only on the main thread    }}

3

public static class controlhelpers{public    static void invokeifrequired<t> (this T control, action<t> Action) where T:isynchronizeinvoke    {        if (control. invokerequired)        {            control. Invoke (New action (() = = Action (control)), null);        }        else        {            action (control);}}    }

Use it like this:

  private  updatesummary (string  Text) { Summaryinvokeifrequired (s =>  { S. Text = text });                /span>               

3
Thelabel.invoke (New Action (() = Thelabel.text = "Hello World from Worker thread!"));

4

public static void invokeifrequired (this control control, MethodInvoker action) {    if (control. invokerequired) {        control. Invoke (action);    } else {        action ();}    }

Call:

Richeditcontrol1.invokeifrequired (() =>{    //Do anything you want with the control    here Richeditcontrol1.rtftext = value;    Rtfhelpers.addmissingstyles (richEditControl1);});

Updated to:

public static void invokeifrequired (this isynchronizeinvoke obj,                                         methodinvoker action) {    if (obj. invokerequired) {        var args = new Object[0];        Obj. Invoke (action, args);    } else {        action ();}    }

Consider when an exception still occurs:

while (!control.Visible){ System.Threading.Thread.Sleep(50);}


5
public static void invokeifrequired (this Control C, action<control> Action) {    if (c.invokerequired)    {        C.invoke (New action (() = action (c)));    else    {        action (c);    }}

Change to:

public static void Invokeifrequired<t> (this T C, action<t> Action)     where T:control

Call Method:

Object1. Invokeifrequired (c + = {c.visible = true;});

WinForm software, do not operate the UI in the thread

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