How to creat exe file from my application on runtime

[SuperNeo]

Hello everybody. I use VB.net. I have a problem about how to creat exe file from my application on runtime. That is:

I have a program A, I want A can dynamic creat a program B on runtime. B have been custom by some parameter that user input to A.

How can I do this? Who can teach me? Thanks!!!

[PlausiblyDamp]

If you want to create code on the fly then you need to be looking at the classes under System.Reflection.Emit - these are the ones that allow you to construct assemblies dynamically.

 

What kind of program would A be generating? What are the parameters that determine how this works?

[Joe Mamma]

Hello everybody. I use VB.net. I have a problem about how to creat exe file from my application on runtime. That is:

I have a program A, I want A can dynamic creat a program B on runtime. B have been custom by some parameter that user input to A.

How can I do this? Who can teach me? Thanks!!!

 

there are a couple of ways to skin this cat:

 

1. Generate the code as a text file and compile from program A. (probably the easiest)

 

2. use System.Reflection.Emit classes to dynamically generate IDL (more robust but more complex) There are some great examples in the help file. look up AssemblyBuilder class.

 

Is the dynamic assembly an actual exe or do you just want to dynamically extend the currently running application?

[SuperNeo]

there are a couple of ways to skin this cat:

 

1. Generate the code as a text file and compile from program A. (probably the easiest)

 

2. use System.Reflection.Emit classes to dynamically generate IDL (more robust but more complex) There are some great examples in the help file. look up AssemblyBuilder class.

 

Is the dynamic assembly an actual exe or do you just want to dynamically extend the currently running application?

 

Thank you for yourhelp. I wanna dynamic assembly an actual exe. But I cannot understand your first way. How to Generate the code as a text file and compile from program A? My VB.net and english are all very poor. Can you explain your first way more detail？

[predseda]

Thank you for yourhelp. I wanna dynamic assembly an actual exe. But I cannot understand your first way. How to Generate the code as a text file and compile from program A? My VB.net and english are all very poor. Can you explain your first way more detail？

 

1. Study English

2. Study VB.NET

 

If your home language is Czech or Slovak you can ask me in this languages if you need help & you are not english speaking, but study english - 99,9% of all programming resources are in english.

[Arch4ngel]

Some study incoming

 

Well... You'll be having a hard time buddy.

I admit... I'm french canadian (From Quebec) and I speak english as nearly good as my french (well... our french isn't that good :p). But you'll really have to learn english to understand and produce good english text (speaking isn't necessary ... well ... for now).

 

VB.NET has many many many (did I said many ?) many tutorial on the web right now. Look into google for "VB.NET tutorial" and you'll be having a great time.

 

Dynamic assembly and code compilation on the fly is - maybe - a little to advance for you right now... I might be wrong... but all you'll have is all the code without really understanding everything that happen behind all that.

 

2 solution are given to you.

 

-Learn VB.NET a little bit more and come back

-Continue in this thread and try to make the impossible possible. :)

 

Thank you for your patience.

[SuperNeo]

I find a example at：

http://www.c-sharpcorner.com/1/ExeOnFlyKunal.asp

But this example write in C#

I have rewrite example in VB.net, But get a error. My code is below:

 

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

Main()

End Sub

 

Public Shared Sub Main()

Dim AppD As AppDomain

AppD = AppDomain.CurrentDomain

Dim AssemblyN As New AssemblyName

AssemblyN.Name = "TestAsm"

 

Dim AssemblyB As AssemblyBuilder

AssemblyB = AppD.DefineDynamicAssembly(AssemblyN, AssemblyBuilderAccess.Save)

Dim ModuleB As ModuleBuilder

ModuleB = AssemblyB.DefineDynamicModule("testmod", "TestAsm.exe")

Dim TypeB As TypeBuilder

TypeB = ModuleB.DefineType("mytype", TypeAttributes.Public)

Dim MethodB As MethodBuilder

MethodB = TypeB.DefineMethod("hi", MethodAttributes.Public Or MethodAttributes.Static, GetType(String), New Type() {GetType(String)})

AssemblyB.SetEntryPoint(MethodB)

Dim ILG As ILGenerator

ILG = MethodB.GetILGenerator()

ILG.EmitWriteLine("Hello World")

ILG.Emit(OpCodes.Ret)

TypeB.CreateType()

AssemblyB.Save("TestAsm.exe")

End Sub

End Class

 

How to I can fix my code?

[Joe Mamma]

I could be wrong as I have only taken a cursory look. . .

 

the entry point code you referenced in the link:

MethodBuilder metb = tb.DefineMethod("hi",
                       MethodAttributes.Public |MethodAttributes.Static,
                       null,null);

has a signature:

Public Shared Sub hi()

your translation:

MethodB = TypeB.DefineMethod("hi",
                       MethodAttributes.Public Or MethodAttributes.Static,
                       GetType(String),
                       New Type() {GetType(String)})

 

has a signature ( aString is implied):

Public Shared Function hi(AString as string) as string

shouldn't your translation be:

MethodB = TypeB.DefineMethod("hi",
                       MethodAttributes.Public Or MethodAttributes.Static,
                       Nothing, Nothing)