blocks|key|488827|text|按钮控件有一个可以调用的PerformClick()方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|488828|button1.PerformClick();|code-block|syntax|javascript|488829|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Button controls have a PerformClick() method that you can call.

<pre><code>button1.PerformClick();
</code></pre>

blocks|key|489074|text|.NET框架使用了这样一种模式:对于每个事件X，都有一个引发事件X的方法protected+void+OnX(EventArgs+e)+{}。请参阅此Msdn+article。要从声明类的外部引发事件，您必须派生该类并添加一个公共包装方法。在Button的情况下，它将如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|489075|class+MyButton+:+System.Windows.Forms.Button
{

++++public+void+ProgrammaticClick(EventArgs+e)
++++{
++++++++base.OnClick(e);
++++}

}|code-block|syntax|javascript|489076|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/hy3sefw3%2528v=vs.100%2529.aspx^0|M|1|W|1|10|Y|3D|6|23|C|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|H|7|14|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

The .NET framework uses a pattern where for every event <code>X</code> there is a method <code>protected void OnX(EventArgs e) {}</code> that raises event <code>X</code>. See this <a href="http://msdn.microsoft.com/en-us/library/hy3sefw3%28v=vs.100%29.aspx" rel="noreferrer">Msdn article</a>. To raise an event from outside the declaring class you will have to derive the class and add a public wrapper method. In the case of <code>Button</code> it would look like this:

<pre><code>class MyButton : System.Windows.Forms.Button
{

 public void ProgrammaticClick(EventArgs e)
 {
 base.OnClick(e);
 }

}
</code></pre>

blocks|key|488898|text|您可以直接调用事件处理函数，并为发送方指定null，为参数指定EventArgs.Empty。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|488899|void+ButtonClicked(object+sender,+EventArgs+e)
{
++++//+do+stuff
}

//+Somewhere+else+in+your+code:
button1.Click+%2B=+new+EventHandler(ButtonClicked);

//+call+the+event+handler+directly:
ButtonClicked(button1,+EventArgs.Empty);|code-block|syntax|javascript|488900|或者，您可以将逻辑从ButtonClicked事件移到它自己的函数中，然后您的事件处理程序和您拥有的其他代码将反过来调用新函数。|488901|void+StuffThatHappensOnButtonClick()
{
++++//+do+stuff
}

void+ButtonClicked(object+sender,+EventArgs+e)
{
++++StuffThatHappensOnButtonClick();
}

//+Somewhere+else+in+your+code:
button1.Click+%2B=+new+EventHandler(ButtonClicked);

//+Simulate+the+button+click:
StuffThatHappensOnButtonClick();|488902|后一种方法的优点是可以将业务逻辑和UI逻辑分开。你真的不应该在你的控件事件处理程序中有任何业务逻辑。|488903|entityMap^0|L|4|V|F|0|0|A|D|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|12|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|R|$]]

You can just call the event handler function directly and specify <code>null</code> for the sender and <code>EventArgs.Empty</code> for the arguments.

<pre><code>void ButtonClicked(object sender, EventArgs e)
{
 // do stuff
}

// Somewhere else in your code:
button1.Click += new EventHandler(ButtonClicked);

// call the event handler directly:
ButtonClicked(button1, EventArgs.Empty);
</code></pre>

Or, rather, you'd move the logic out of the <code>ButtonClicked</code> event into its own function, and then your event handler and the other code you have would in turn call the new function.

<pre><code>void StuffThatHappensOnButtonClick()
{
 // do stuff
}

void ButtonClicked(object sender, EventArgs e)
{
 StuffThatHappensOnButtonClick();
}

// Somewhere else in your code:
button1.Click += new EventHandler(ButtonClicked);

// Simulate the button click:
StuffThatHappensOnButtonClick();
</code></pre>

The latter method has the advantage of letting you separate your business and UI logic. You really should never have any business logic in your control event handlers.

blocks|key|271962|text|可以，只需像调用其他方法一样调用该方法即可。例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|271963|++++private+void+btnSayHello_Click(object+sender,+EventArgs+e)
++++{
++++++++MessageBox.Show("Hello+World!");
++++}

++++private+void+btnTriggerHello_Click(object+sender,+EventArgs+e)
++++{
++++++++btnSayHello_Click(null,+null);
++++}|code-block|syntax|javascript|271964|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Yes, just call the method the way you would call any other. For example:

<pre><code> private void btnSayHello_Click(object sender, EventArgs e)
 {
 MessageBox.Show("Hello World!");
 }

 private void btnTriggerHello_Click(object sender, EventArgs e)
 {
 btnSayHello_Click(null, null);
 }
</code></pre>

blocks|key|271904|text|button1.PerformClick();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|271905|但是，如果你必须做这样的事情，也许把你在事件下的代码移到一个新的方法上会更好？|unstyled|271906|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>button1.PerformClick();
</code></pre>

But if you have to do something like this maybe it's better to move the code you have under the event on a new method ?

blocks|key|272111|text|为什么不干脆把你的事件代码放到一个方法中。然后让事件执行该方法。这样，如果您需要执行事件引发的相同代码，则可以执行，但只需调用“方法”即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|272112|void+Event_Method()
{
++++//Put+Event+code+here.
++++MessageBox.Show("Hello!");
}

void+_btnSend_Click(object+sender,+EventArgs+e)
{
++++Event_Method();
}

void+AnotherMethod()
{
++++Event_Method();
}|code-block|syntax|javascript|272113|讲得通?现在，"Click“事件和代码中的任何地方都可以触发与"Click”事件相同的代码。|272114|不触发事件，调用事件调用的方法。;)|272115|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Why don't you just put your event code into a Method. Then have the Event execute the method. This way if you need to execute the same code that the Event rises, you can, but simply just calling the "Method".

<pre><code>void Event_Method()
{
 //Put Event code here.
 MessageBox.Show("Hello!");
}

void _btnSend_Click(object sender, EventArgs e)
{
 Event_Method();
}

void AnotherMethod()
{
 Event_Method();
}
</code></pre>

Make sense? Now the "Click" event AND anywhere in code you can trigger the same code as the "Click" event.

Don't trigger the event, call the method that the event calls. ;)

blocks|key|489250|text|在大多数情况下，您不需要这样做。只需将您的功能封装在与特定目的(任务)相关的函数中。你可以在你的事件内部和任何需要它的地方调用这个函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|489251|过多地考虑你的方法。|489252|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

In most cases you would not need to do that. Simply wrap your functionality in functions related to a specific purpose (task). You call this function inside your event and anywhere else it's needed.

Overthink your approach.

blocks|key|272229|text|我最近遇到了这个问题，我想要以编程方式单击一个分配了多个事件处理程序的按钮(想想UserControl或派生类)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|272230|例如：|272231|myButton.Click+%2B=+ButtonClicked1
myButton.Click+%2B=+ButtonClicked2;

void+ButtonClicked1(object+sender,+EventArgs+e)
{
++++Console.WriteLine("ButtonClicked1");
}

void+ButtonClicked2(object+sender,+EventArgs+e)
{
++++Console.WriteLine("ButtonClicked1");
}|code-block|syntax|javascript|272232|当您单击按钮时，两个函数都将被调用。在希望以编程方式从窗体中为函数激发事件处理程序的实例中(例如，当用户在文本字段中按enter键时，则调用传递给该控件的InvokeOnClick方法。例如|offset|length|style|CODE|272233|this.InvokeOnClick(myButton,+EventArgs.Empty);|272234|其中this是您所在的表单实例。|272235|entityMap^0|0|0|0|25|D|0|0|2|4|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|X|8|@$K|Y|L|Z|M|N]]|9|@]|A|$]]|$1|O|3|P|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|11|8|@$K|12|L|13|M|N]]|9|@]|A|$]]|$1|S|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|T|$]]

I recently had this problem where I wanted to programatically click a button that had multiple event handlers assigned to it (think UserControl or derived classes).
For example:
<pre><code>myButton.Click += ButtonClicked1
myButton.Click += ButtonClicked2;

void ButtonClicked1(object sender, EventArgs e)
{
 Console.WriteLine(&quot;ButtonClicked1&quot;);
}

void ButtonClicked2(object sender, EventArgs e)
{
 Console.WriteLine(&quot;ButtonClicked1&quot;);
}
</code></pre>
When you click the button, both functions will get called. In the instances where you want to programmatically fire an event handler for a function from a form (for example, when a user presses enter in a Text field then call the <code>InvokeOnClick</code> method passing through the control you. For example
<pre><code>this.InvokeOnClick(myButton, EventArgs.Empty);
</code></pre>
Where <code>this</code> is the Form instance you are in.

blocks|key|489127|text|使用for循环调用button_click事件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|489128|private+void+btnadd_Click(object+sender,+RoutedEventArgs+e)
{+
++++for+(int+i+=+0;+i+<=+2;+i%2B%2B)
++++++++StuffThatHappensOnButtonClick();+
}


void+StuffThatHappensOnButtonClick()
{
++++........do+stuff
}|code-block|syntax|javascript|489129|我们假设您至少需要单击该按钮一次|489130|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

use a for loop to call the button_click event

<pre><code>private void btnadd_Click(object sender, RoutedEventArgs e)
{ 
 for (int i = 0; i &lt;= 2; i++)
 StuffThatHappensOnButtonClick(); 
}


void StuffThatHappensOnButtonClick()
{
 ........do stuff
}
</code></pre>

we assume at least one time you need click the button

Assume that I have a WinFoms project. There is just one button (e.g. <code>button1</code>). 

The question is: is it possible to trigger the <code>ButtonClicked</code> event via code without really clicking it?

Trigger control's event programmatically

假设我有一个WinFoms项目。只有一个按钮(例如button1)。问题是:是否有可能在不真正单击的情况下通过代码触发ButtonClicked事件？

问以编程方式触发控件的事件
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回答 9

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