How to rename sub main to function main

[Rody Reulen]

I made an console application with Visual Basic .net. Visual Basic will
automatically create the sub procedure main for you. I try to convert the
main procedure to a function.

During the compilation I will get an error message:

No accessible 'Main' method with an appropriate signature was found in
<application>.

I took a look at the following settings in Visual Basic dotnet:

Project, properties, common properties, general, start object

Here it's possible to define you startup project, but when I modify this
option, the startup object is automatically reset to Sub Main in stead of
Function Main.

Does someone know how to change this?

Thank in advance.

Kind regards,

Rody

 

[Herfried K. Wagner [MVP]]

I made an console application with Visual Basic .net. Visual Basic will
automatically create the sub procedure main for you. I try to convert the
main procedure to a function.

During the compilation I will get an error message:

No accessible 'Main' method with an appropriate signature was found in
<application>.

I took a look at the following settings in Visual Basic dotnet:

Project, properties, common properties, general, start object

Here it's possible to define you startup project, but when I modify this
option, the startup object is automatically reset to Sub Main in stead of
Function Main.

Post the code you are using.

 

[=?Windows-1252?Q?Jos=E9_Manuel_Ag=FCero?=]

Hello, Rody:

The Main() method must have public access. If it is inside a class, it must also be shared:

\\\
module MyTestModule
public sub Main()
end sub
end module

class MyTestClass
public shared sub Main()
end sub
end class
///

Regards.


"Rody Reulen" <[email protected]> escribió en el mensaje | I made an console application with Visual Basic .net. Visual Basic will
| automatically create the sub procedure main for you. I try to convert the
| main procedure to a function.
|
| During the compilation I will get an error message:
|
| No accessible 'Main' method with an appropriate signature was found in
| <application>.
|
| I took a look at the following settings in Visual Basic dotnet:
|
| Project, properties, common properties, general, start object
|
| Here it's possible to define you startup project, but when I modify this
| option, the startup object is automatically reset to Sub Main in stead of
| Function Main.
|
| Does someone know how to change this?
|
| Thank in advance.
|
| Kind regards,
|
| Rody

 

[Jay B. Harlow [MVP - Outlook]]

Rody,
As Herfried stated, post your code.

Main can be a function as long as it returns an Integer.

Also you can either have an array of string as a parameter or no parameters.

For details see:

http://msdn.microsoft.com/library/d.../en-us/vbcn7/html/vaconVisualBasicModules.asp

and

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/vbconhelloworld.asp

Hope this helps
Jay

 

[Rody Reulen]

The problem is solved now.

The reason why it did work was because I did specify:

Function Main()
' Do something

Return <integer value>
End Function

in stead of

Function Main() as Integer
'Do something

Return <integer value>
End Function

As you can see I did not explicitly specify the returnvalue type from the
function.

Thanks for you help.

Kind regards,

Rody

 

[Herfried K. Wagner [MVP]]

The reason why it did work was because I did specify:

Function Main()
' Do something

Return <integer value>
End Function

in stead of

Function Main() as Integer
'Do something

Return <integer value>
End Function

As you can see I did not explicitly specify the returnvalue type from the
function.

Always do that! I would specify an access modifier explicitly too.

 

[Phill. W]

* "Rody Reulen" <[email protected]> scripsit: .. . . .. . .
I would specify an access modifier explicitly too.

Herfried,

Having never used an access modifier in this situation myself,
which would you recommend and why?

Regards,
Phill W.

 

[Herfried K. Wagner [MVP]]

. . .

Herfried,

Having never used an access modifier in this situation myself,
which would you recommend and why?

'Public Sub Main'. If you don't specify a modifier, the sub will be
public too, but it's "good style" to always specify the modifier...

;-)

 

[Chris Dunaway]

The problem is solved now.

The reason why it did work was because I did specify:

Function Main()

in stead of

Function Main() as Integer

If Option Strict On was set, it should have flagged it as an error. Is
Option Strict On?