小编Ger*_*urs的帖子

我是Xamarin的新手,我不知道如何在c#中执行以下操作.我想在单击Positive/Negative按钮时阻止alertdialog关闭.我需要先对输入进行一些验证.如果输入正确,则对话框可以关闭,否则我将显示带有说明的消息.基本上,我有以下代码:

private void CreateAddProjectDialog() { 
    //some code
    var alert = new AlertDialog.Builder (this);
    alert.SetTitle ("Create new project");
    alert.SetView (layoutProperties);
    alert.SetCancelable (false);
    alert.SetPositiveButton("Create", HandlePositiveButtonClick);
    alert.SetNegativeButton("Cancel", HandelNegativeButtonClick);
}

private void HandlePositiveButtonClick (object sender, EventArgs e) {
    //Do some validation here and return false (prevent closing of dialog) if invalid, else close....
}

现在,我在StackOverflow上重新发布以下文章:如何在单击按钮时阻止对话框关闭

我认为下面的代码(取自线程)有解决方案,但我不知道如何重写我的c#代码来实现Java:

AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage("Test for preventing dialog close");
builder.setPositiveButton("Test", 
    new DialogInterface.OnClickListener()
    {
        @Override
        public void onClick(DialogInterface dialog, int which)
        {
            //Do nothing here because we …