My code is
type = Type.GetType(key);
Key which i pass is a namespace qualified name .
My code is in BusinessLayer. I am creating a instance of DataAccessLayer. DataAccessLayer reference is added to BusinessLayer.
I am getting the error as "Could not load type 'Catalyst.DAL.ExamDAO.CExamDAO' from assembly 'BusinessLayer, Version=1.9.3.0, Culture=neutral, PublicKeyToken=null'.".
What should i do to specify explicitly thats the class is from DataAccessLayer ?
Key vale is "Catalyst.DAL.ExamDAO.CExamDAO"
Edit :
My actual code is
public static object getClassInstance(string key, params object[] constructorArgs)
{
string assemblyPath = null;
string customClassName = null;
DataSet objDataset = getAssemblyInfo(key);
if (objDataset != null && objDataset.Tables.Count > 0 && objDataset.Tables[0].Rows.Count > 0)
{
assemblyPath = objDataset.Tables[0].Rows[0]["ACA_ASSEMBLY_PATH"].ToString();
customClassName = objDataset.Tables[0].Rows[0]["ACA_CLASS_NAME"].ToString();
}
Assembly assembly;
Type type;
if (assemblyPath != null && assemblyPath != string.Empty)
{
assembly = Assembly.LoadFile(assemblyPath);
type = assembly.GetType(customClassName);
}
else // if no customisation
{
type = Type.GetType(key);
}
object classInstance = constructorArgs == null ? Activator.CreateInstance(type) : Activator.CreateInstance(type, constructorArgs);
if (classInstance == null) throw new Exception("broke");
return classInstance;
}
I am trying to load the default classes if there is no customization . Method is in BO . If i pass the key as namespace qualified names of any Bo type it converts . But DAO type it wont
If you know that whatever type it is will be within DataAccessLayer, then I'd get an Assembly reference as simply as possible, e.g.
Assembly assembly = typeof(AnyPublicTypeWithinTargetAssembly).Assembly;
Type type = assembly.GetType(namespaceQualifiedTypeName);
An alternative is to use Type.GetType with an assembly-qualified name, but that's more long-winded in terms of specifying the type name.