使用 winform 的 controlbox[X] 跳过验证? [英] Skip validation with controlbox[X] of winform?

问题描述

我有一个验证事件

private void EmployeeIDtextBox_Validating(object sender, CancelEventArgs e)
{
   if (EmployeeIDtextBox.Text == "")
   {
      MessageBox.Show("Please Enter EmployeeID.", "Invalid EmployeeID");
   }
}

并且可以使用取消按钮跳过验证

And able to skip the validation with a cancelbutton

private void cancelbutton_Click(object sender, EventArgs e)
{
    AutoValidate = AutoValidate.Disable;
    Close();
}

是否可以使用 windowsform 的 controlbox[X] 跳过验证?我试图将表单的 CausesValidation 设置为 false，但它不起作用.我也用 formclosure 尝试过，但它不起作用.

Is it possible to skip validation with controlbox[X] of windowsform? I tried to set CausesValidation of form to false but it is not working. I also try it with formclosing but is it not working.

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
   if (EmployeeIDtextBox.CausesValidation)
   {
      EmployeeIDtextBox.CausesValidation = false;
      Close();
   }
}

推荐答案

我已经在上一个问题中给了你答案.停止使用 MessageBox，您的问题就会消失.请改用 ErrorProvider 组件.

I already gave you the answer in your previous question. Stop using MessageBox and your problem disappears. Use the ErrorProvider component instead.

拦截表单的关闭处理，以便您可以在第一个事件触发之前取消验证，这需要破解.将此代码粘贴到您的表单中:

Intercepting the form's closing handling so you can cancel the validation before the first event fires requires a hack. Paste this code into your form:

    protected override void WndProc(ref Message m) {
        // Intercept WM_SYSCOMMAND, SC_CLOSE
        if (m.Msg == 0x112 && (m.WParam.ToInt32() & 0xfff0) == 0xf060) this.AutoValidate = AutoValidate.Disable;
        base.WndProc(ref m);
    }

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