Add and Remove Assembly : Assembly « Reflection « C# / C Sharp

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C# / C Sharp » Reflection » Assembly 

Add and Remove Assembly
using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;
using System.ComponentModel;
using System.Globalization;

namespace SPaDevToolkit.StsAdm.Commands.Utilities
    internal static class Gac
        public static void AddAssembly(string assemblyPath)
            string mscorcfgStrongName = string.Format(CultureInfo.InvariantCulture, "mscorcfg,Version={0}, Culture={1}, PublicKeyToken={2}""""neutral""b03f5f7f11d50a3a");

            Assembly assembly = Assembly.Load(mscorcfgStrongName);

            //Type name is not expected to be changed.
            Type type = assembly.GetType("Microsoft.CLRAdmin.Fusion");

            int result;
            result = (int)Reflection.InvokeMember(type, "AddAssemblytoGac", BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.InvokeMethod, new object[] { assemblyPath });

            //If some error occurred 
            if (result != 0)
                throw new Exception(string.Format(CultureInfo.InvariantCulture, "Assembly could not be placed in GAC. Error code returned was {0}", result.ToString()));


        public static void RemoveAssembly(string assemblyPath)
            //Get assembly strong name details
            string strongName = Assembly.LoadFrom(assemblyPath).FullName;

            string[] strongNameParts = strongName.Split(new char[] { ',' });
            string assemblyName = strongNameParts[0];
            string version = strongNameParts[1].Split(new char[] { '=' })[1];
            string publicKey = strongNameParts[3].Split(new char[] { '=' })[1];
            string configFileStrongName = string.Format(CultureInfo.InvariantCulture, "mscorcfg,Version={0}, Culture={1}, PublicKeyToken={2}""""neutral""b03f5f7f11d50a3a");

            Assembly assembly = Assembly.Load(configFileStrongName);

            //Type name is not expected to be changed.
            Type fusionType = assembly.GetType("Microsoft.CLRAdmin.Fusion");
            //MethodInfo mi = fusionType.GetMethod("RemoveAssemblyFromGac", BindingFlags.NonPublic | BindingFlags.Static);

            //Create variable of AssemInfo struct
            Type assemblyInfoType = assembly.GetType("Microsoft.CLRAdmin.AssemInfo");
            object assemInfo = Activator.CreateInstance(assemblyInfoType, true);

            //Binding flags to filter/search out fields in the type
            BindingFlags bindingFlags = BindingFlags.NonPublic | BindingFlags.DeclaredOnly | BindingFlags.Instance | BindingFlags.GetField;

            //Set field values.
            //Disassembler shows only following fields are used by RemoveAssemblyFromGac method.
            //FieldInfo sName = assemblyInfoType.GetField("Name", bindingFlags);
            //sName.SetValue(assemInfo, assemblyName);

            Reflection.SetField(assemInfo, "Name"new object[] { assemblyName });

            //FieldInfo sVersion = assemblyInfoType.GetField("Version", bindingFlags);
            //sVersion.SetValue(assemInfo, version);

            Reflection.SetField(assemInfo, "Version"new object[] { version });

            //FieldInfo sPublicKeyToken = assemblyInfoType.GetField("PublicKeyToken", bindingFlags);
            //sPublicKeyToken.SetValue(assemInfo, publicKey);

            Reflection.SetField(assemInfo, "PublicKeyToken"new object[] { publicKey });

            //FieldInfo sFusionName = assemblyInfoType.GetField("sFusionName", bindingFlags);
            //sFusionName.SetValue(assemInfo, string.Format(CultureInfo.InvariantCulture, "{0}{1}", strongName, ", processorArchitecture=MSIL"));

            Reflection.SetField(assemInfo, "sFusionName"new object[] { string.Format(CultureInfo.InvariantCulture, "{0}{1}", strongName, ", processorArchitecture=MSIL") });

            //FieldInfo nCacheType = assemblyInfoType.GetField("nCacheType", bindingFlags);
            //nCacheType.SetValue(assemInfo, (uint)2);

            Reflection.SetField(assemInfo, "nCacheType"new object[] { (uint)});

            bool result;
            //result = (bool)mi.Invoke(null, new object[] { assemInfo });

            result = (bool)Reflection.InvokeMember(fusionType, "RemoveAssemblyFromGac", BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.InvokeMethod, new object[] { assemInfo });

            //If some error occurred 
            if (!result)
                throw new Exception(string.Format(CultureInfo.InvariantCulture, "Assembly could not be uninstalled from GAC. Error code returned was {0}", result.ToString()));

            internal static class Reflection
        public static object InvokeMember(object src, string strName, BindingFlags type, object[] args)
            bool bStatic = (src is Type);
            Type t = bStatic ? (Type)src : src.GetType();
            BindingFlags bindingFlags = BindingFlags.NonPublic | BindingFlags.Public |
              BindingFlags.DeclaredOnly |
              (bStatic ? BindingFlags.Static : BindingFlags.Instance|
            object target = (bStatic ? null : src);

            return (t.InvokeMember(strName, bindingFlags, null, target, args));

        public static object GetProperty(object src, string strName)
            return (InvokeMember(src, strName, BindingFlags.GetProperty, null));

        public static object SetProperty(object src, string strName, object[] args)
            return (InvokeMember(src, strName, BindingFlags.SetProperty, args));

        public static object GetField(object src, string strName)
            return (InvokeMember(src, strName, BindingFlags.GetField, null));

        public static object SetField(object src, string strName, object[] args)
            return (InvokeMember(src, strName, BindingFlags.SetField, args));



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16.Get current application domainGet current application domain
17.List All Types from an AssemblyList All Types from an Assembly
18.List All Members from an AssemblyList All Members from an Assembly
19.Use Assembly to indicate the version and cultureUse Assembly to indicate the version and culture AssemblyName()
21.AssemblyName: Name, Version, CultureInfo, SetPublicKeyToken
22.Gets an assembly by its name if it is currently loaded
23.Get all modules from Assembly
24.Load and execute an assembly and Unload the application domain
25.GetNamespaces from Assembly
26.Load Embedded Font
27.Gets the Assembly in which the type is declared.
28.Gets the assembly-qualified name of the Type
29.Get Resource Assembly Type
30.Assembly Title
31.Assembly Copyright
32.Assembly Version
33.Get Assembly Path and Name
34.Get Resource from Assembly
35.Assembly Accessors
36.Assembly Utils
37.Get Assembly As Bytes
38.Loads a resource given an assembly-relative resource name and an anchor type.
39.Returns the path relative to the entry assembly
40.Returns the full assembly signature.
41.Detects whether an assembly is implementing a specific interface or not.
42.Creates an instance of a class implementing a specific interface in a given assembly.
43.Get Application Path
44.Create Class from class name
45.Activator Utils  | Contact Us | Privacy Policy
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