I am trying to use a dinamycally generated type as the source of one business rules editor called codeeffects (www.codeeffects.com), however I am getting this exception
Could not find or load assembly "tmpAssembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null". Error message: Could not load file or assembly 'tmpAssembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified. (Error S103)
The index action in the controller is:
[HttpGet]
public ActionResult Index()
{
IMyInterface myObject = (IMyInterface)ObjectBuilder.CreateOurNewObject();
Type t = myObject.GetType();
ViewBag.Rule = RuleModel.Create(t);
return View();
}
and the method that creates the new object is.
public static object CreateOurNewObject()
{
string _xml = "<root>" +
"<column name=\"Name\">Miron</column>" +
"<column name=\"LastName\">Abramson</column>" +
"<column name=\"Blog\">http://ift.tt/1Qf9CQU;" +
"</root>";
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(_xml);
// create a dynamic assembly and module
AssemblyName assemblyName = new AssemblyName();
assemblyName.Name = "tmpAssembly";
System.Reflection.Emit.AssemblyBuilder assemblyBuilder = Thread.GetDomain().DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
ModuleBuilder module = assemblyBuilder.DefineDynamicModule("tmpModule");
// create a new type builder
TypeBuilder typeBuilder = module.DefineType("BindableRowCellCollection", TypeAttributes.Public | TypeAttributes.Class);
typeBuilder.AddInterfaceImplementation(typeof(IMyInterface));
// Loop over the attributes that will be used as the properties names in out new type
foreach (XmlNode node in xmlDoc.SelectSingleNode("root").ChildNodes)
{
string propertyName = node.Attributes["name"].Value;
// Generate a private field
FieldBuilder field = typeBuilder.DefineField("_" + propertyName, typeof(string), FieldAttributes.Private);
// Generate a public property
PropertyBuilder property =
typeBuilder.DefineProperty(propertyName,
PropertyAttributes.None,
typeof(string),
new Type[] { typeof(string) });
// The property set and property get methods require a special set of attributes:
MethodAttributes GetSetAttr =
MethodAttributes.Public |
MethodAttributes.HideBySig;
// Define the "get" accessor method for current private field.
MethodBuilder currGetPropMthdBldr =
typeBuilder.DefineMethod("get_value",
GetSetAttr,
typeof(string),
Type.EmptyTypes);
// Intermediate Language stuff...
ILGenerator currGetIL = currGetPropMthdBldr.GetILGenerator();
currGetIL.Emit(OpCodes.Ldarg_0);
currGetIL.Emit(OpCodes.Ldfld, field);
currGetIL.Emit(OpCodes.Ret);
// Define the "set" accessor method for current private field.
MethodBuilder currSetPropMthdBldr =
typeBuilder.DefineMethod("set_value",
GetSetAttr,
null,
new Type[] { typeof(string) });
// Again some Intermediate Language stuff...
ILGenerator currSetIL = currSetPropMthdBldr.GetILGenerator();
currSetIL.Emit(OpCodes.Ldarg_0);
currSetIL.Emit(OpCodes.Ldarg_1);
currSetIL.Emit(OpCodes.Stfld, field);
currSetIL.Emit(OpCodes.Ret);
// Last, we must map the two methods created above to our PropertyBuilder to
// their corresponding behaviors, "get" and "set" respectively.
property.SetGetMethod(currGetPropMthdBldr);
property.SetSetMethod(currSetPropMthdBldr);
}
// Generate our type
Type generetedType = typeBuilder.CreateType();
// Now we have our type. Let's create an instance from it:
object generetedObject = Activator.CreateInstance(generetedType);
// Loop over all the generated properties, and assign the values from our XML:
PropertyInfo[] properties = generetedType.GetProperties();
int propertiesCounter = 0;
// Loop over the values that we will assign to the properties
foreach (XmlNode node in xmlDoc.SelectSingleNode("root").ChildNodes)
{
string value = node.InnerText;
properties[propertiesCounter].SetValue(generetedObject, value, null);
propertiesCounter++;
}
//Yoopy ! Return our new genereted object.
return generetedObject;
}
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