ReferencedAssemblyResolver.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Common / AuthoringOM / Compiler / ReferencedAssemblyResolver.cs / 1305376 / ReferencedAssemblyResolver.cs
                        

                        
                            namespace System.Workflow.ComponentModel.Compiler 
{
    using System;
    using System.Reflection;
    using System.Collections.Specialized; 
    using System.ComponentModel.Design;
    using System.Workflow.ComponentModel.Compiler; 
    using System.Workflow.ComponentModel.Design; 

    #region Class Assembly resolver 

 	// In the cases where the WorkflowCompiler is invoked directly, we need to deserialize the
	// xoml before we can create the real TypeProvider, hence it is necessary to look at the
	// referenced assemblies for any types that fail to load. In the VS scenarios, the TypeProvider 
	// has already been created and the WorkflowMarkupSerializer will use it first.
 	internal sealed class ReferencedAssemblyResolver 
	{ 
 		private StringCollection referencedAssemblies = new StringCollection();
 		private Assembly localAssembly; 

		private bool resolving = false;

 		public ReferencedAssemblyResolver(StringCollection referencedAssemblies, Assembly localAssembly) 
		{
			this.referencedAssemblies = referencedAssemblies; 
			this.localAssembly = localAssembly; 
 		}
 
		public Assembly ResolveEventHandler(object sender, ResolveEventArgs args)
 		{
 			return ResolveAssembly(args.Name);
		} 

        internal void SetLocalAssembly(Assembly localAsm) 
        { 
            this.localAssembly = localAsm;
        } 

 		private Assembly ResolveAssembly(string name)
		{
			if (this.resolving) 
				return null;
 
 			// First look for the local assembly. 
			if (this.localAssembly != null && name == this.localAssembly.FullName)
 				return this.localAssembly; 

 			try
			{
 				this.resolving = true; 

				AssemblyName assemblyName = new AssemblyName(name); 
 
				// Then try the referenced assemblies.
				foreach (string assemblyPath in this.referencedAssemblies) 
 				{
					try
 					{
 						AssemblyName referenceAssemblyName = AssemblyName.GetAssemblyName(assemblyPath); 
						if (referenceAssemblyName != null && ParseHelpers.AssemblyNameEquals(referenceAssemblyName, assemblyName))
 						{ 
							Assembly reference = null; 
                            try
							{ 
                                reference = Assembly.Load(referenceAssemblyName);
							}
 							catch
							{ 
 								reference = Assembly.LoadFrom(assemblyPath);
 							} 
							return reference; 
 						}
					} 
					catch
					{
 						// Eat up any exceptions!
					} 

 				} 
 			} 
			finally
 			{ 
				this.resolving = false;
			}
			return null;
 		} 
	}
 
 	#endregion 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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