Fix #1014: fix assembly load errors causing ILSpy to crash

ILSpy/MainWindow.xaml.cs

@@ -273,7 +273,7 @@ namespace ICSharpCode.ILSpy
 					}
 				} else {
 					foreach (LoadedAssembly asm in commandLineLoadedAssemblies) {
-						ModuleDefinition def = asm.GetModuleDefinitionAsync().Result;
+						ModuleDefinition def = asm.GetModuleDefinitionOrNull();
 						if (def != null) {
 							MemberReference mr = XmlDocKeyProvider.FindMemberByKey(def, args.NavigateTo);
 							if (mr != null) {
@@ -292,7 +292,7 @@ namespace ICSharpCode.ILSpy
 			} else if (commandLineLoadedAssemblies.Count == 1) {
 				// NavigateTo == null and an assembly was given on the command-line:
 				// Select the newly loaded assembly
-				JumpToReference(commandLineLoadedAssemblies[0].GetModuleDefinitionAsync().Result);
+				JumpToReference(commandLineLoadedAssemblies[0].GetModuleDefinitionOrNull());
 			}
 			if (args.Search != null)
 			{

ILSpy/SearchPane.cs

@@ -216,7 +216,7 @@ namespace ICSharpCode.ILSpy
 				try {
 					var searcher = GetSearchStrategy(searchMode, searchTerm);
 					foreach (var loadedAssembly in assemblies) {
-						ModuleDefinition module = loadedAssembly.GetModuleDefinitionAsync().Result;
+						ModuleDefinition module = loadedAssembly.GetModuleDefinitionOrNull();
 						if (module == null)
 							continue;
 						CancellationToken cancellationToken = cts.Token;

ILSpy/TreeNodes/Analyzer/AnalyzerEntityTreeNode.cs

@@ -38,7 +38,7 @@ namespace ICSharpCode.ILSpy.TreeNodes.Analyzer
 		public override bool HandleAssemblyListChanged(ICollection<LoadedAssembly> removedAssemblies, ICollection<LoadedAssembly> addedAssemblies)
 		{
 			foreach (LoadedAssembly asm in removedAssemblies) {
-				if (this.Member.Module == asm.GetModuleDefinitionAsync().Result)
+				if (this.Member.Module == asm.GetModuleDefinitionOrNull())
 					return false; // remove this node
 			}
 			this.Children.RemoveAll(

ILSpy/TreeNodes/AssemblyListTreeNode.cs

@@ -185,7 +185,7 @@ namespace ICSharpCode.ILSpy.TreeNodes
 				return null;
 			App.Current.Dispatcher.VerifyAccess();
 			foreach (AssemblyTreeNode node in this.Children) {
-				if (node.LoadedAssembly.IsLoaded && node.LoadedAssembly.GetModuleDefinitionAsync().Result == module)
+				if (node.LoadedAssembly.IsLoaded && node.LoadedAssembly.GetModuleDefinitionOrNull() == module)
 					return node;
 			}
 			return null;

ILSpy/TreeNodes/AssemblyReferenceTreeNode.cs

@@ -77,7 +77,7 @@ namespace ICSharpCode.ILSpy.TreeNodes
 			if (assemblyListNode != null) {
 				var refNode = assemblyListNode.FindAssemblyNode(parentAssembly.LoadedAssembly.LookupReferencedAssembly(r));
 				if (refNode != null) {
-					ModuleDefinition module = refNode.LoadedAssembly.GetModuleDefinitionAsync().Result;
+					ModuleDefinition module = refNode.LoadedAssembly.GetModuleDefinitionOrNull();
 					if (module != null) {
 						foreach (var childRef in module.AssemblyReferences)
 							this.Children.Add(new AssemblyReferenceTreeNode(childRef, refNode));

ILSpy/TreeNodes/AssemblyTreeNode.cs

@@ -145,7 +145,7 @@ namespace ICSharpCode.ILSpy.TreeNodes
 
 		protected override void LoadChildren()
 		{
-			ModuleDefinition moduleDefinition = assembly.GetModuleDefinitionAsync().Result;
+			ModuleDefinition moduleDefinition = assembly.GetModuleDefinitionOrNull();
 			if (moduleDefinition == null) {
 				// if we crashed on loading, then we don't have any children
 				return;
@@ -396,8 +396,9 @@ namespace ICSharpCode.ILSpy.TreeNodes
 				return;
 			foreach (var node in context.SelectedTreeNodes) {
 				var la = ((AssemblyTreeNode)node).LoadedAssembly;
-				if (!la.HasLoadError) {
-					foreach (var assyRef in la.GetModuleDefinitionAsync().Result.AssemblyReferences) {
+				var module = la.GetModuleDefinitionOrNull();
+				if (module != null) {
+					foreach (var assyRef in module.AssemblyReferences) {
 						la.LookupReferencedAssembly(assyRef);
 					}
 				}

ILSpy/TreeNodes/DerivedTypesTreeNode.cs

@@ -60,7 +60,7 @@ namespace ICSharpCode.ILSpy.TreeNodes
 		IEnumerable<ILSpyTreeNode> FetchChildren(CancellationToken cancellationToken)
 		{
 			// FetchChildren() runs on the main thread; but the enumerator will be consumed on a background thread
-			var assemblies = list.GetAssemblies().Select(node => node.GetModuleDefinitionAsync().Result).Where(asm => asm != null).ToArray();
+			var assemblies = list.GetAssemblies().Select(node => node.GetModuleDefinitionOrNull()).Where(asm => asm != null).ToArray();
 			return FindDerivedTypes(type, assemblies, cancellationToken);
 		}
 

TestPlugin/ContextMenuCommand.cs

@@ -27,7 +27,7 @@ namespace TestPlugin
 			if (context.SelectedTreeNodes == null)
 				return;
 			AssemblyTreeNode node = (AssemblyTreeNode)context.SelectedTreeNodes[0];
-			AssemblyDefinition asm = node.LoadedAssembly.GetAssemblyDefinitionAsync().Result;
+			AssemblyDefinition asm = node.LoadedAssembly.GetAssemblyDefinitionOrNull();
 			if (asm != null) {
 				SaveFileDialog dlg = new SaveFileDialog();
 				dlg.FileName = node.LoadedAssembly.FileName;