C#中MessageBox用法大全(附效果图).doc

我们在程序中经常会用到MessageBox。 MessageBox.Show()共有21中重载方法。现将其常见用法总结如下：1.MessageBox.Show(Hello);最简单的，只显示提示信息。2.MessageBox.Show(There are something wrong!,ERROR);可以给消息框加上标题。3.if (MessageBox.Show(Delete this user?, Confirm Message, MessageBoxButtons.OKCancel) = DialogResult.OK) /delete询问是否删除时会用到这个。4.if (MessageBox.Show(Delete this user?, Confirm Message, MessageBoxButtons.OKCancel,MessageBoxIcon.Question) = DialogResult.OK) /delete可以给MessageBox加上一个Icon，.net提供常见的Icon共选择。5.if (MessageBox.Show(Delete this user?, Confirm Message, MessageBoxButtons.OKCancel, MessageBoxIcon.Question,MessageBoxDefaultButton.Button2) = DialogResult.OK) /delete可以改变MessageBox的默认焦点，如下：6.if (MessageBox.Show(Delete this user?, Confirm Message, MessageBoxButtons.OKCancel, MessageBoxIcon.Question,MessageBoxDefaultButton.Button2,MessageBoxOptions.RtlReading) = DialogResult.OK) /delete反向显示：7.if (MessageBox.Show(Delete this user?, Confirm Message, MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2, MessageBoxOptions.RightAlign,true) = DialogResult.OK) /delete添加Help按钮：8.if (MessageBox.Show(Delete this user?, Confirm Message, MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1, MessageBoxOptions.RtlReading, /folder/file.htm) = DialogResult.OK) /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。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。 if (MessageBox.Show(Delete this user?, Confirm Message, MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1, MessageBoxOptions.RtlReading, /folder/file.htm, HelpNavigator.Fin