Call a Main function from other Main function

[raghulvarma]

In my console application I have a class and a main function to it as

namespace Console1
{
   Public class Program1
            {
                   static void Main (string[] args)
                        {
                             Console.WriteLine("Hai");
                         }
            }
}
 

I have created another new application and the namespace is Console2 and the class name is Program2, I have reffered this to my Console 2 by the following way

namespace Console2
{
   using Console2;
   Public class Program2
            {
                   static void Main (string[] args)
                        {
                        }
            }
}
 

Now if I need to get the Main function of Program1 in Program2 how should I do that?
Thanks
Raghul

[akshaycjoshi]

Then use Assembly.LoadFrom(assemblypath) method to load that assemly.
Then obtain the type from that assemly.
Then obtain the MethodInfo object and use methodInfo.Invoke().

[raghulvarma]

Then use Assembly.LoadFrom(assemblypath) method to load that assemly.
Then obtain the type from that assemly.
Then obtain the MethodInfo object and use methodInfo.Invoke().

I added the reference of console1 with that of Console2 and I implemented the concept of reflection as you told.

namespace Console2 
{ 
   using Console1; 
   Public class Program2 
            { 
                   static void Main (string[] args) 
                        { 
             Assembly sampleassembly;
            sampleassembly = Assembly.LoadFrom("ConsoleApplication2");
            MethodInfo mi = sampleassembly.GetTypes()[0].GetMethod("Main");
                        } 
            } 
} 
 

here it shows an error as file not found what has to be done?
is there any way ?
thanks in advance
Raghul

[akshaycjoshi]

First u dont need to add reference to the assembly nor you need to keep it in the bin directory as long as u use Assembly.LoadFrom().

Assembly asm = Assembly.LoadFrom(@"C:\Documents and  Settings\Administrator\My Documents\Visual Studio 2005\Projects\firstmain\firstmain\bin\Debug\firstmain.dll");

Now assembly is loaded but u have to get a reference to the class cantaining the Main() method.
Do this as

Type t = asm.GetType( [fully qualified name of the class cantaining the method Main] ,true, true);

Now we have reference to the class.Then you need to point to the specific method in the class.
Do this as

MethodInfo m = t.GetMethod("Main", BindingFlags.Static | BindingFlags.Public);

Those binding flags specify what kind of method u wanna search.
If ur Main() is public and static use the above combination. (BindingFlags.Static | BindingFlags.Public)

Now you need to invoke the function.
Do this as

m.Invoke(null, null);

the first argument is for object(since it's static method u wanna access use null).Second argument specifies the arguments(again kept null).

Hope it helps !

[raghulvarma]

First u dont need to add reference to the assembly nor you need to keep it in the bin directory as long as u use Assembly.LoadFrom().

Assembly asm = Assembly.LoadFrom(@"C:\Documents and  Settings\Administrator\My Documents\Visual Studio 2005\Projects\firstmain\firstmain\bin\Debug\firstmain.dll");

Now assembly is loaded but u have to get a reference to the class cantaining the Main() method.
Do this as

Type t = asm.GetType( [fully qualified name of the class cantaining the method Main] ,true, true);

Now we have reference to the class.Then you need to point to the specific method in the class.
Do this as

MethodInfo m = t.GetMethod("Main", BindingFlags.Static | BindingFlags.Public);

Those binding flags specify what kind of method u wanna search.
If ur Main() is public and static use the above combination. (BindingFlags.Static | BindingFlags.Public)

Now you need to invoke the function.
Do this as

m.Invoke(null, null);

the first argument is for object(since it's static method u wanna access use null).Second argument specifies the arguments(again kept null).

Hope it helps !

thanks a lot I got it!