From 54a742f3f5a66de37d931a9da348eb5c4610bd18 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Sat, 7 Mar 2020 19:54:57 +0100
Subject: [PATCH] Metadata Explorer: Display blob contents of custom debug
 information in tooltip.

---
 .../Metadata/MetadataExtensions.cs                   | 12 ++++++++++++
 .../CustomDebugInformationTableTreeNode.cs           |  4 +++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/ICSharpCode.Decompiler/Metadata/MetadataExtensions.cs b/ICSharpCode.Decompiler/Metadata/MetadataExtensions.cs
index d83b9bb3f..8d304cc29 100644
--- a/ICSharpCode.Decompiler/Metadata/MetadataExtensions.cs
+++ b/ICSharpCode.Decompiler/Metadata/MetadataExtensions.cs
@@ -101,6 +101,18 @@ namespace ICSharpCode.Decompiler.Metadata
 			return sb.ToString();
 		}
 
+		public static string ToHexString(this BlobReader reader)
+		{
+			StringBuilder sb = new StringBuilder(reader.Length * 3);
+			for (int i = 0; i < reader.Length; i++) {
+				if (i == 0)
+					sb.AppendFormat("{0:X2}", reader.ReadByte());
+				else
+					sb.AppendFormat("-{0:X2}", reader.ReadByte());
+			}
+			return sb.ToString();
+		}
+
 		public static IEnumerable<TypeDefinitionHandle> GetTopLevelTypeDefinitions(this MetadataReader reader)
 		{
 			foreach (var handle in reader.TypeDefinitions) {
diff --git a/ILSpy/Metadata/DebugTables/CustomDebugInformationTableTreeNode.cs b/ILSpy/Metadata/DebugTables/CustomDebugInformationTableTreeNode.cs
index bffe6abfc..bbe0b966b 100644
--- a/ILSpy/Metadata/DebugTables/CustomDebugInformationTableTreeNode.cs
+++ b/ILSpy/Metadata/DebugTables/CustomDebugInformationTableTreeNode.cs
@@ -138,7 +138,9 @@ namespace ICSharpCode.ILSpy.Metadata
 
 			public string ValueTooltip {
 				get {
-					return null;
+					if (debugInfo.Value.IsNil)
+						return "<nil>";
+					return metadata.GetBlobReader(debugInfo.Value).ToHexString();
 				}
 			}