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&nbsp; 我们在程序中经常会用到MessageBox。&nbsp;&nbsp; MessageBox.Show()共有21中重载方法。现将其常见用法总结如下：&nbsp;&nbsp;1.MessageBox.Show(“Hello~~~~”);最简单的，只显示提示信息。<img alt="" src="/upload/image/20170408/6362722647821603635038107.png"/>2.MessageBox.Show(“There are something wrong!”,“ERROR”);&nbsp; 可以给消息框加上标题。<img alt="" src="/upload/image/20170408/6362722647838791573752493.png"/>3.if (MessageBox.Show(“Delete this user?”, “Confirm Message”, MessageBoxButtons.OKCancel) == DialogResult.OK){&nbsp;&nbsp; //delete}询问是否删除时会用到这个。<img alt="" src="/upload/image/20170408/6362722647838791573752493.png"/>4.if (MessageBox.Show(“Delete this user?”, “Confirm Message”, MessageBoxButtons.OKCancel,MessageBoxIcon.Question) == DialogResult.OK){&nbsp;&nbsp;&nbsp; //delete}可以给MessageBox加上一个Icon，.net提供常见的Icon共选择。<img alt="" src="/upload/image/20170408/6362722647840354116981739.png"/>5.if (MessageBox.Show(“Delete this user?”, “Confirm Message”, MessageBoxButtons.OKCancel, MessageBoxIcon.Question,MessageBoxDefaultButton.Button2) == DialogResult.OK){&nbsp;&nbsp; //delete}可以改变MessageBox的默认焦点，如下：<img alt="" src="/upload/image/20170408/6362722647843479198738401.png"/>6.if (MessageBox.Show(“Delete this user?”, “Confirm Message”, MessageBoxButtons.OKCancel, MessageBoxIcon.Question,MessageBoxDefaultButton.Button2,MessageBoxOptions.RtlReading) == DialogResult.OK){&nbsp;&nbsp; //delete}反向显示：<img alt="" src="/upload/image/20170408/6362722647845041732967646.png"/>7.if (MessageBox.Show(“Delete this user?”, “Confirm Message”, MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2, MessageBoxOptions.RightAlign,true) == DialogResult.OK){&nbsp;&nbsp;&nbsp; //delete}添加Help按钮：<img alt="" src="/upload/image/20170408/6362722647849729357953554.png"/>8.if (MessageBox.Show(“Delete this user?”, “Confirm Message”, MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1, MessageBoxOptions.RtlReading, @”/folder/file.htm”) == DialogResult.OK){&nbsp;&nbsp; //delete}指定帮助文件的路径，点击即可打开该路径下的帮助文件。<img alt="" src="/upload/image/20170408/6362722647851291896480972.png"/>9.//HelpNavigator指定常数来指示要显示的帮助文件元素。Find 帮助文件将打开到搜索页。&nbsp;if (MessageBox.Show(“Delete this user?”, “Confirm Message”, MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1, MessageBoxOptions.RtlReading, @”/folder/file.htm”, HelpNavigator.Find) == DialogResult.OK){&nbsp;&nbsp;&nbsp; //delete}<img alt="" src="/upload/image/20170408/6362722647851291896480972.png"/>还有一些用法，不是太实用这里就不一一介绍了，有兴趣的朋友可以参考下这里：<a href="http://msdn.microsoft.com/zh-cn/library/system.windows.forms.messagebox.show(VS.80).aspx">MSDN</a>的MessageBox类。转自：http://blog.csdn<a title=".NET知识库" class="replace_word" style="color:#df3434; font-weight:bold;" href="http://lib.csdn.net/base/dotnet" target="_blank">.NET</a>/xuenzhen123/article/details/4808005

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