需求：弹窗是非模式对话框，即可以多个弹窗弹出，且弹窗后面的窗体可以被操作，不会被锁定。
自定义的窗体Window实现以下步骤：
//定义消息框
string messageBoxText = "需要保存吗?";
string caption = "HELLO";
MessageBoxButton button = MessageBoxButton.YesNoCancel;
MessageBoxImage icon = MessageBoxImage.Warning;
//显示消息框
MessageBoxResult result = MessageBox.Show(messageBoxText, caption, button, icon);
//处理消息框信息
switch (result)
{
case MessageBoxResult.Yes:
// ...
break;
case MessageBoxResult.No:
// ...
break;
case MessageBoxResult.Cancel:
// ...
break;
}
简化的写法：
MessageBoxResult result = MessageBox.Show("这里是消息内容", "这是标题", MessageBoxButton.YesNo);
if (result == MessageBoxResult.Yes)
{
// do something
}
else
{
// do something
}
//打开文件对话框
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.FileName = "Document"; // Default file name
dlg.DefaultExt = ".txt"; // Default file extension
dlg.Filter = "Text documents (.txt)|*.txt"; // Filter files by extension
// Show open file dialog box
Nullable<bool> result = dlg.ShowDialog();
// Process open file dialog box results
if (result == true)
{
// Open document
string filename = dlg.FileName;
//...
}
转自：https://www.cnblogs.com/guxin/p/wpf-message-dialog.html
原文：https://www.cnblogs.com/javalinux/p/14484230.html