How do I create a MessageBox in C

Question

I have just installed C  for the first time  and at first glance it appears to be very similar to VB6  I decided to start off by trying to make a  Hello  World   UI Edition   I started in the Form Designer and made a button named  Click Me   proceeded to double-click it and typed in  MessageBox  Hello  World       I received the following error   MessageBox is a  type  but used as a  variable   Fair enough  it seems in C  MessageBox is an Object  I tried the following  MessageBox a   new MessageBox  Hello  World       I received the following error  MessageBox does not contain a constructor that takes  1  arguments  Now I am stumped  Please help

User · Answer

Try below code   MessageBox Show  Test Information Message    Caption   MessageBoxButtons OK  MessageBoxIcon Information

User · Answer

I got the same error  System Windows Forms MessageBox  is a  type  but is used like a  variable   even if using   MessageBox Show  Hello  World       I guess my initial attempts with invalid syntax caused some kind of bug and I ended up fixing it by adding a space between  MessageBox Show  and the brackets      MessageBox Show   Hello  World       Now using the original syntax without the extra space works again   MessageBox Show  Hello  World

User · Answer

MessageBox Show also returns a DialogResult  which if you put some buttons on there  means you can have it returned what the user clicked  Most of the time I write something like  if  MessageBox Show  Do you want to continue     Question   MessageBoxButtons YesNo     MessageBoxResult Yes           some interesting behaviour here     which I guess is a bit unwieldy but it gets the job done   See https   docs microsoft com en-us dotnet api system windows forms dialogresult for additional enum options you can use here

User · Answer

Code summary   using System Windows Forms        MessageBox Show   hello world       Also  as per this other stack post   In Visual Studio expand the project in Solution Tree  right click on References  Add Reference  Select System Windows Forms on Framework tab  This will get the MessageBox working in conjunction with the using System Windows Forms reference from above

User · Answer

In the System Windows Forms class  you can find more on the MSDN page for this here  Among other things you can control the message box text  title  default button  and icons  Since you didn t specify  if you are trying to do this in a webpage you should look at triggering the javascript alert  my message    or confirm  my question    functions

User · Answer

It is a static function on the MessageBox class  the simple way to do this is using  MessageBox Show  my message      in the System Windows Forms class   You can find  more on the msdn page for this here   Among other things you can control the message box text  title  default button  and icons   Since you didn t specify  if you are trying to do this in a webpage you should look at triggering the javascript alert  my message    or confirm  my question    functions

User · Answer

Also you can use a MessageBox with OKCancel options  but it requires many codes  The if block is for OK  the else block is for Cancel  Here is the code   if  MessageBox Show  Are you sure you want to do this     Question   MessageBoxButtons OKCancel  MessageBoxIcon Question     DialogResult OK        MessageBox Show  You pressed OK       else       MessageBox Show  You pressed Cancel         You can also use a MessageBox with YesNo options   if  MessageBox Show  Are you sure want to doing this     Question   MessageBoxButtons YesNo  MessageBoxIcon Question     DialogResult Yes        MessageBox Show  You are pressed Yes       else       MessageBox Show  You are pressed No

User · Answer

This is some of the things you can put into a message box  Enjoy  MessageBox Show  Enter the text for the message box                          Enter the name of the message box                          Enter the button names e g  MessageBoxButtons YesNo                          Enter the icon e g  MessageBoxIcon Question                      Enter the default button e g  MessageBoxDefaultButton Button1  More information can be found here

[c#] How do I create a MessageBox in C#?

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