About use Runtime Method Invoke and Runtime Source Code Compliation

1.

using System.Reflection;
using System.Security.Permissions; 

namespace SystemReflectionEx
{

Class Test

{

string ModuleName = "TestAssembly.dll";
string TypeName = "TestClass";
string MethodName = "TestMethod";

Module [] myModules = myAssembly.GetModules();
foreach (Module Mo in myModules)
    {
     if (Mo.Name == ModuleName)
         {
         Type[] myTypes = Mo.GetTypes();
         foreach (Type Ty in myTypes)
             {
            if (Ty.Name == TypeName)
                {
                MethodInfo[] myMethodInfo = Ty.GetMethods(flags);
                foreach(MethodInfo Mi in myMethodInfo)
                    {
                    if (Mi.Name == MethodName)
                        {
                        Object obj = Activator.CreateInstance(Ty);
                        Object response = Mi.Invoke(obj, null);
                        }
                    }
                }
            }
        }
    }}}

2.

using System;
using System.IO;
using System.Globalization;
using System.CodeDom.Compiler;
using System.Text;
using Microsoft.CSharp;
using Microsoft.VisualBasic;

namespace CodeProviders
{
	class CompileSample
	{
        [STAThread]
        static void Main(string[] args)
        {
            if (args.Length > 0)
            {
                //  First parameter is the source file name.
                if (File.Exists(args[0]))
                {
                    CompileExecutable(args[0]);
                }
                else
                {
                    Console.WriteLine("Input source file not found - {0}",
                        args[0]);
                }
            }
            else
            {
                Console.WriteLine("Input source file not specified on command line!");
            }
        }

        public static bool CompileExecutable(String sourceName)
        {
            FileInfo sourceFile = new FileInfo(sourceName);
            CodeDomProvider provider = null;
            bool compileOk = false;

            // Select the code provider based on the input file extension.
            if (sourceFile.Extension.ToUpper(CultureInfo.InvariantCulture) == ".CS")
            {
                provider = CodeDomProvider.CreateProvider("CSharp");
            }
            else if (sourceFile.Extension.ToUpper(CultureInfo.InvariantCulture) == ".VB")
            {
                provider = CodeDomProvider.CreateProvider("VisualBasic");
            }
            else
            {
                Console.WriteLine("Source file must have a .cs or .vb extension");
            }

            if (provider != null)
            {

                // Format the executable file name.
                // Build the output assembly path using the current directory
                // and <source>_cs.exe or <source>_vb.exe.

                String exeName = String.Format(@"{0}\{1}.exe",
                    System.Environment.CurrentDirectory,
                    sourceFile.Name.Replace(".", "_"));

                CompilerParameters cp = new CompilerParameters();

                // Generate an executable instead of
                // a class library.
                cp.GenerateExecutable = true;

                // Specify the assembly file name to generate.
                cp.OutputAssembly = exeName;

                // Save the assembly as a physical file.
                cp.GenerateInMemory = false;

                // Set whether to treat all warnings as errors.
                cp.TreatWarningsAsErrors = false;

                // Invoke compilation of the source file.
                CompilerResults cr = provider.CompileAssemblyFromFile(cp,
                    sourceName);

                if(cr.Errors.Count > 0)
                {
                    // Display compilation errors.
                    Console.WriteLine("Errors building {0} into {1}",
                        sourceName, cr.PathToAssembly);
                    foreach(CompilerError ce in cr.Errors)
                    {
                        Console.WriteLine("  {0}", ce.ToString());
                        Console.WriteLine();
                    }
                }
                else
                {
                    // Display a successful compilation message.
                    Console.WriteLine("Source {0} built into {1} successfully.",
                        sourceName, cr.PathToAssembly);
                }

                // Return the results of the compilation.
                if (cr.Errors.Count > 0)
                {
                    compileOk = false;
                }
                else
                {
                    compileOk = true;
                }
            }
            return compileOk;
        }
	}
}