Detailed introduction to the use of c# message box messagebox-C#.Net Tutorial-php.cn

Detailed introduction to the use of c# message box messagebox

黄舟

Release： 2017-03-17 11:47:10

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This article mainly introduces the detailed explanation of c# message box messagebox and related information about its use. Friends in need can refer to

C#The detailed explanation of message box messagebox And use

The message dialog box is displayed using the show method of the messagebox object. The MessageBox object is part of the namespace System.Windows.Forms. Show is a static method, which means that you can use this method without creating an instance based on the object of the MessageBox class. And this method can be overloaded, that is, the method can have different parameter list forms.

Return results: DialogResult dr1=MessageBox.Show(text,caption,buttons,icon,defaultbutton,option);

Does not return anything Value: MessageBox.Show(text,caption,buttons,icon);

The parameters must be output in the order above

1,Text: setting Prompt text statement in the message dialog box. Must be of String type
2, Caption: Optional parameter, set the title of the message dialog box, must be of string type
3, Buttons: Optional parameter, set the message dialog box Which buttons are displayed in the box
4, Icon: Optional parameter, set which icon is displayed in the message dialog box
5, Defaultbutton: Optional parameter, set which button of the message dialog box is activated by default
6, Option optional parameters, set some special options for the message dialog box, such as text alignment, specify reading order, whether to write messages to the system log

Button each enumerationConstant And its meaning

Ok	There is only an "OK" button in the message box
OkCancel	There are only "OK" and "Cancel" buttons in the message box
YesNo	There are only "Yes" and "No" buttons in the message box
YesNoCancel	There are "Yes", "No" and "Cancel" buttons in the message box
RetryCancel	There are "Retry" and "Cancel" buttons in the message box
AbortRetryIgnore	There are "Abort", "Retry" and "Ignore" buttons in the message box
Constants	Function and meaning

Icon enumeration constants and meaning

The symbol consists of a triangle with a yellow background and an exclamation point in it The symbol consists of a circle with a red background and a white ## The message box does not contain the symbol Information The symbol is composed of a circle and the lowercase letter i Stop This symbol is composed of a circle with a red background and a white A triangle with a yellow background and an exclamation point in it form . The return value of the message dialog box is a member of System.Windows.Forms.DialogResult. The enumeration constants and their meanings are as follows Table Abort The return value of the message box is "Abort" (Abort), that is, the "Abort" button is clicked Cancel The return value of the message box is "Cancel" (Cancel), that is, the "Cancel" button is clicked Ignore The return value of the message box is "Ignore", that is, the "Ignore" button is clicked

Enum constants	Functional meaning
Error	There is a symbol in the message box, with a red background The symbol is composed of a circle with a white X inside it
Asterisk	## Exclamation
	Hand

## No The return value of the message box The value is "No" (No), that is, the "No" button is clicked Ok Retry None The return value of the message box is "Yes" (Yes), that is, the "Yes" button is clickedUse:

1、 /* if (flag)
       {
         DialogResult diagorel = MessageBox.Show(this, "Please inpult again,your message is empty!", 
         "Information cue", MessageBoxButtons.RetryCancel, MessageBoxIcon.Warning);
         switch (diagorel)
         {
           case DialogResult.Retry:
             this.username.Text = "";
             this.password.Text = "";
             break;
           case DialogResult.Cancel:
             break;


         }
       }*/

Copy after login

if( MessageBox.Show( "确定提交吗？", "提示", MessageBoxButtons.YesNo ) == DialogResult.Yes )
      {
        程序运行代码.......
      }

Copy after login


The return value of the message box is "OK" (Ok ), that is, clicked the "OK" button
The return value of the message box is "Retry" (Retry), that is, clicked "Retry" "Button
The message box does not have any return value, that is, no button was clicked	Yes


2. The simplest method is this

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