如何编程调用文本框的点击事件处理程序

Question

I know how to programmatically invoke the event handler of a Button:

button1.PerformClick();   

I would like to do the same for the Click event handler of a TextBox.问题是文本框没有

textBox1.PerformClick(); 

Answer 1

我建议方法提取（为什么我们应该混合UI - Windows消息和业务逻辑）：

//TODO: put a better name here 
private void onMyTextBoxClick() {
  //TODO: relevant code here
}

private void MyTextBox_Click(object sender, EventArgs e) {
  onMyTextBoxClick();
}

然后你可以调用onMyTextBoxClick:

...
// Same business logic as if MyTextBox is clicked
onMyTextBoxClick();
...

编辑： 如果您确实想要 EventArgs 参数，只需提供它们即可：

//TODO: put a better name here 
private void onMyTextBoxClick(TextBox box, EventArgs e) {
  //TODO: relevant code here
}

// Default EventArgs
private void onMyTextBoxClick(TextBox box) {
  onMyTextBoxClick(box, EventArgs.Empty);
}

// Both TextBox and EventArgs are default ones
private void onMyTextBoxClick() {
  onMyTextBoxClick(MyTextBox, EventArgs.Empty);
}

private void MyTextBox_Click(object sender, EventArgs e) {
  onMyTextBoxClick(sender as TextBox, e);
}

用法：

// Default EventArgs
onMyTextBoxClick(myTextBox);

// Custom EventArgs
EventArgs args = ...

onMyTextBoxClick(myTextBox, args);