一、C#中MessageBox.Show用法

MessageBox.Show?(String)?顯示具有指定文本的消息框。?由?.NET?Compact?Framework?支持。

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MessageBox.Show?(IWin32Window,?String)?在指定對象的前面顯示具有指定文本的消息框。

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MessageBox.Show?(String,?String)?顯示具有指定文本和標題的消息框。由?.NET?Compact?Framework?支持。?

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MessageBox.Show?(IWin32Window,?String,?String)?在指定對象的前面顯示具有指定文本和標題的消息框。??

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MessageBox.Show?(String,?String,?MessageBoxButtons)?顯示具有指定文本、標題和按鈕的消息框。?

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MessageBox.Show?(IWin32Window,?String,?String,?MessageBoxButtons)?在指定對象的前面顯示具有指定文本、標題和按鈕的消息框。?

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MessageBox.Show?(String,?String,?MessageBoxButtons,?MessageBoxIcon)?顯示具有指定文本、標題、按鈕和圖標的消息框。?

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MessageBox.Show?(IWin32Window,?String,?String,?MessageBoxButtons,?MessageBoxIcon)?在指定對象的前面顯示具有指定文本、標題、按鈕和圖標的消息框。?

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MessageBox.Show?(String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton)?顯示具有指定文本、標題、按鈕、圖標和默認按鈕的消息框。?由?.NET?Compact?Framework?支持。?

? ?

MessageBox.Show?(IWin32Window,?String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton)?在指定對象的前面顯示具有指定文本、標題、按鈕、圖標和默認按鈕的消息框。?

? ?

MessageBox.Show?(String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions)?顯示具有指定文本、標題、按鈕、圖標、默認按鈕和選項的消息框。?

? ?

MessageBox.Show?(IWin32Window,?String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions)?在指定對象的前面顯示具有指定文本、標題、按鈕、圖標、默認按鈕和選項的消息框。?

? ?

MessageBox.Show?(String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions,?Boolean)?顯示一個具有指定文本、標題、按鈕、圖標、默認按鈕、選項和"幫助"按鈕的消息框。?

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MessageBox.Show?(String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions,?String)?使用指定的幫助文件顯示一個具有指定文本、標題、按鈕、圖標、默認按鈕、選項和"幫助"按鈕的消息框。?

? ?

MessageBox.Show?(IWin32Window,?String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions,?String)?使用指定的幫助文件顯示一個具有指定文本、標題、按鈕、圖標、默認按鈕、選項和"幫助"按鈕的消息框。?

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MessageBox.Show?(String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions,?String,?HelpNavigator)?使用指定的幫助文件和?HelpNavigator?顯示一個具有指定文本、標題、按鈕、圖標、默認按鈕、選項和"幫助"按鈕的消息框。?

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MessageBox.Show?(String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions,?String,?String)?使用指定的幫助文件和幫助關鍵字[guan jian zi]顯示一個具有指定文本、標題、按鈕、圖標、默認按鈕、選項和"幫助"按鈕的消息框。?

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MessageBox.Show?(IWin32Window,?String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions,?String,?HelpNavigator)?使用指定的幫助文件和?HelpNavigator?顯示一個具有指定文本、標題、按鈕、圖標、默認按鈕、選項和"幫助"按鈕的消息框。?

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MessageBox.Show?(IWin32Window,?String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions,?String,?String)?使用指定的幫助文件和幫助關鍵字[guan jian zi]顯示一個具有指定文本、標題、按鈕、圖標、默認按鈕、選項和"幫助"按鈕的消息框。?

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MessageBox.Show?(String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions,?String,?HelpNavigator,?Object)?使用指定的幫助文件、HelpNavigator?和幫助主題顯示一個具有指定文本、標題、按鈕、圖標、默認按鈕、選項和"幫助"按鈕的消息框。?

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MessageBox.Show?(IWin32Window,?String,?String,?MessageBoxButtons,?MessageBoxIcon,?MessageBoxDefaultButton,?MessageBoxOptions,?String,?HelpNavigator,?Object)?使用指定的幫助文件、HelpNavigator?和幫助主題顯示一個具有指定文本、標題、按鈕、圖標、默認按鈕、選項和"幫助"按鈕的消息框。???

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用法如：?

DialogResult?ret?=MessageBox.Show(?"確定要刪除[shan chu]記錄么？"? ,??"刪除[shan chu]",?MessageBoxButtons.OKCancel,?MessageBoxIcon.Question);??

MessageBox.Show(?"提示[ti shi]信息",?"??信息標題",?MessageBoxButtons.OK);?

MessageBox.Show(?"提示[ti shi]信息",?"??信息標題",?MessageBoxButtons.OK,?MessageBoxIcon.Error);

我們在程序中經常會用到MessageBox。? ? ?

MessageBox.Show()共有21中重載[zhong zai]方法。現將其常見用法總結如下： ? ? ? ?

???1.? ? ??MessageBox? .Show(?"Hello~~~~"? );? ?

??最簡單的，只顯示提示[ti shi]信息。? ?

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???2.? ?MessageBox? .Show(?"There are something wrong!"? ,?"ERROR"? );? ?

????可以給消息框加上標[shang biao]題。? ?

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???3.? ? ??if? (?MessageBox? .Show(?"Delete this user?"? , ?"Confirm Message"? , ?MessageBoxButtons? .OKCancel) == ?DialogResult? .OK)? ?

??{? ?

????? ? ?//delete? ? ?

??}? ?

??詢問是否刪除[shan chu]時會用到這個。? ?

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? ?

??? ?

???4.? ?if? (?MessageBox? .Show(?"Delete this user?"? , ?"Confirm Message"? , ?MessageBoxButtons? .OKCancel,?MessageBoxIcon? .Question) == ?DialogResult? .OK)? ?

??{? ?

?????? ? ?//delete? ? ?

??}? ?

??可以給MessageBox加上一個Icon，.net提供常見的Icon共選擇[xuan ze]。? ?

??? ?

? ?

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???5.? ?if? (?MessageBox? .Show(?"Delete this user?"? , ?"Confirm Message"? , ?MessageBoxButtons? .OKCancel, ?MessageBoxIcon? .Question,?MessageBoxDefaultButton? .Button2) == ?DialogResult? .OK)? ?

??{? ?

????? ? ?//delete? ? ?

??}? ?

??可以改變MessageBox的默認焦點，如下：? ?

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???6.? ? ??if? (?MessageBox? .Show(?"Delete this user?"? , ?"Confirm Message"? , ?MessageBoxButtons? .OKCancel, ?MessageBoxIcon? .Question,?MessageBoxDefaultButton? .Button2,?MessageBoxOptions? .RtlReading) == ?DialogResult? .OK)? ?

??{? ?

????? ? ?//delete? ? ?

??}? ?

??反向顯示：? ?

? ?

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??? ?

???7.? ?if? (?MessageBox? .Show(?"Delete this user?"? , ?"Confirm Message"? , ?MessageBoxButtons? .OKCancel, ?MessageBoxIcon? .Question, ?MessageBoxDefaultButton? .Button2, ?MessageBoxOptions? .RightAlign,?true? ) == ?DialogResult? .OK)? ?

??{? ?

?????? ? ?//delete? ? ?

??}? ?

??添加Help按鈕：? ?

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???8.? ? ??if? (?MessageBox? .Show(?"Delete this user?"? , ?"Confirm Message"? , ?MessageBoxButtons? .OKCancel, ?MessageBoxIcon? .Question, ?MessageBoxDefaultButton? .Button1, ?MessageBoxOptions? .RtlReading, ?@"/folder/file.htm"? ) == ?DialogResult? .OK)? ?

??{? ?

????? ? ?//delete? ? ?

??}? ?

??指定幫助文件的路徑[lu jing]，點擊即可打開該路徑[lu jing]下的幫助文件。? ?

??? ?

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??9.? ??//HelpNavigator?指定常數來指示[zhi shi]要顯示的幫助文件元素。? Find ?幫助文件將打開到搜索[sou suo]頁。? ?? ? ? ? ?

???if? (?MessageBox? .Show(?"Delete this user?"? , ?"Confirm Message"? , ?MessageBoxButtons? .OKCancel, ?MessageBoxIcon? .Question, ?MessageBoxDefaultButton? .Button1, ?MessageBoxOptions? .RtlReading, ?@"/folder/file.htm"? , ?HelpNavigator? .Find) == ?DialogResult? .OK)? ?

??{? ?

?????? ? ?//delete? ? ?

??}? ?

還有一些用法，不是太實用這里就不一一介紹了，有興趣的朋友可以參考下這里：?MSDN??的MessageBox類。

二、VB.NET中MsgBox用法

MsgBox: Prompts a dialog box that displays a message.

Examples:

MsgBox?("Thank You for the Help!")

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Information from the MSDN:?MsgBox Function

Parameters

Prompt

Required.?String?expression displayed as the message in the dialog box. The maximum length of?Prompt?is approximately 1024 characters, depending on the width of the characters used. If?Prompt?consists of more than one line, you can separate the lines using a carriage return character (Chr(13)), a linefeed character (Chr(10)), or a carriage return/linefeed character combination (Chr(13)?&?Chr(10)) between each line.

Buttons

Optional. Numeric expression that is the sum of values specifying the number and type of buttons to display, the icon style to use, the identity of the default button, and the modality of the message box. If you omit?Buttons, the default value is zero.

Title

Optional.?String?expression displayed in the title bar of the dialog box. If you omit?Title, the application name is placed in the title bar.

Settings

The?MsgBoxStyle?enumeration values are listed in the following table.

EnumerationValueDescription

OKOnly	0	Displays OK button only.
OKCancel	1	Displays OK and Cancel buttons.
AbortRetryIgnore	2	Displays Abort, Retry, and Ignore buttons.
YesNoCancel	3	Displays Yes, No, and Cancel buttons.
YesNo	4	Displays Yes and No buttons.
RetryCancel	5	Displays Retry and Cancel buttons.
Critical	16	Displays Critical Message icon.
Question	32	Displays Warning Query icon.
Exclamation	48	Displays Warning Message icon.
Information	64	Displays Information Message icon.
DefaultButton1	0	First button is default.
DefaultButton2	256	Second button is default.
DefaultButton3	512	Third button is default.
ApplicationModal	0	Application is modal. The user must respond to the message box before continuing work in the current application.
SystemModal	4096	System is modal. All applications are suspended until the user responds to the message box.
MsgBoxSetForeground	65536	Specifies the message box window as the foreground window.
MsgBoxRight	524288	Text is right-aligned.
MsgBoxRtlReading	1048576	Specifies text should appear as right-to-left reading on Hebrew and Arabic systems.

The first group of values (0–5) describes the number and type of buttons displayed in the dialog box; the second group (16, 32, 48, 64) describes the icon style; the third group (0, 256, 512) determines which button is the default; the fourth group (0, 4096) determines the modality of the message box, and the fifth group specifies whether or not the message box window is the foreground window, along with the alignment and direction of the text. When adding numbers to create a final value for the?Buttons?argument, use only one number from each group.

Return Values

Constant Value

OK	1
Cancel	2
Abort	3
Retry	4
Ignore	5
Yes	6
No	7

Exceptions/Errors

Exception type Error numberCondition

ArgumentException	5	Prompt?is not a?String?expression, or?Titleis invalid.
InvalidOperationException	5	Process is not running in User Interactive mode.
InvalidEnumArgumentException	5	One or more parameters not a member ofMsgBoxResult?or?MsgBoxStyleenumerations.

Remarks

If the dialog box displays a?Cancel?button, pressing the ESC key has the same effect as clicking?Cancel. If the dialog box contains a?Help?button, context-sensitive Help is provided for the dialog box. However, no value is returned until one of the other buttons is clicked.

Note???To specify more than the first argument, you must use the?MsgBox?function in an expression. If you omit any positional arguments, you must retain the corresponding comma delimiter.

Example

This example uses the?MsgBox?function to display a critical-error message in a dialog box with Yes and No buttons. The No button is specified as the default response. This is done by combining the?MsgBox?constant values into one numeric expression. In this case, adding 4 (the Yes/No button combination) and 16 (the Critical Message window) and 256 (the second button as default button) gives a total of 276. The value returned by the?MsgBox?function depends on the button chosen by the user: Yes returns a value of 6; No returns a value of 7.

Dim msg As String Dim title As String Dim style As MsgBoxStyle Dim response As MsgBoxResult msg = "Do you want to continue?" ' Define message. style = MsgBoxStyle.DefaultButton2 Or _MsgBoxStyle.Critical Or MsgBoxStyle.YesNo title = "MsgBox Demonstration" ' Define title. ' Display message. response = MsgBox(msg, style, title) ' or MsgBox(msg, MsgBoxStyle.YesNo, title) If response = MsgBoxResult.Yes Then ' User chose Yes.' Perform some action. Else' Perform some other action. End If

原文出處

鏈接①：http://blog.csdn.net/fan158/article/details/5891780

鏈接②：http://www.lob.cn/jq/kfjq/570.shtml

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轉載于:https://www.cnblogs.com/Scl891004X/p/6257692.html

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