From ee8841e5bb0e2f3ed0feb7ee8fd4336afb16f3a7 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Thu, 14 Dec 2017 11:28:15 +0100
Subject: [PATCH] Fix #561: Clicking on a node with a deleted file causes a
 stacktrace to be printed instead of a user friendly "File doesn't exist"
 message

---
 ILSpy/TreeNodes/AssemblyTreeNode.cs | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/ILSpy/TreeNodes/AssemblyTreeNode.cs b/ILSpy/TreeNodes/AssemblyTreeNode.cs
index 57631af2a..8e418b6ef 100644
--- a/ILSpy/TreeNodes/AssemblyTreeNode.cs
+++ b/ILSpy/TreeNodes/AssemblyTreeNode.cs
@@ -251,15 +251,29 @@ namespace ICSharpCode.ILSpy.TreeNodes
 
 		public override void Decompile(Language language, ITextOutput output, DecompilationOptions options)
 		{
+			void HandleException(Exception ex, string message)
+			{
+				language.WriteCommentLine(output, message);
+
+				output.WriteLine();
+				output.MarkFoldStart("Exception details", true);
+				output.Write(ex.ToString());
+				output.MarkFoldEnd();
+			}
+
 			try {
 				assembly.WaitUntilLoaded(); // necessary so that load errors are passed on to the caller
 			} catch (AggregateException ex) {
 				language.WriteCommentLine(output, assembly.FileName);
-				if (ex.InnerException is BadImageFormatException) {
-					language.WriteCommentLine(output, "This file does not contain a managed assembly.");
-					return;
-				} else {
-					throw;
+				switch (ex.InnerException) {
+					case BadImageFormatException badImage:
+						HandleException(badImage, "This file does not contain a managed assembly.");
+						return;
+					case FileNotFoundException fileNotFound:
+						HandleException(fileNotFound, "The file was not found.");
+						return;
+					default:
+						throw;
 				}
 			}
 			language.DecompileAssembly(assembly, output, options);