一个ModeDialog，模态对话框C#源码，点击窗口里的按钮即可测试，类似窗口比较多，希望这些简单但实用的例子能为C#初学者提供参考和帮助-A ModeDialog, C# source code modal dialog, click on the button to test window, similar to the window more, I hope these simple but practical examples for C# to provide information