Fix handling of wildcard AssemblyVersion properties during markup compilation

src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/MS/Internal/MarkupCompiler/MarkupCompiler.cs

@@ -2596,7 +2596,20 @@ private void GenerateInitializeComponent(bool isApp)
 
             string uriPart = string.Empty;
 
-            string version = String.IsNullOrEmpty(AssemblyVersion) ? String.Empty : COMPONENT_DELIMITER + VER + AssemblyVersion;
+            // If we have an actual version string, try to detect wildcards.  Note that this is required to be at least major.minor.
+            // Prior to markup compilation, this will have been validated by the C# compiler.
+            bool wildcardUsed = false;
+
+            if (!string.IsNullOrEmpty(AssemblyVersion))
+            {
+                var splitVersion = AssemblyVersion.Split('.');
+                wildcardUsed = splitVersion[splitVersion.Length - 1] == "*";
+            }
+
+            // If a developer explicitly sets the AssemblyVersion build property to a wildcard version string, we would use that as part of the URI here.
+            // This results in an error in Version.Parse during InitializeComponent's call tree.  Instead, do as we would have when the developer sets a
+            // wildcard version string via AssemblyVersionAttribute and use an empty string.
+            string version = (String.IsNullOrEmpty(AssemblyVersion) || wildcardUsed) ? String.Empty : COMPONENT_DELIMITER + VER + AssemblyVersion;
             string token = String.IsNullOrEmpty(AssemblyPublicKeyToken) ? String.Empty : COMPONENT_DELIMITER + AssemblyPublicKeyToken;
             uriPart = FORWARDSLASH + AssemblyName + version + token + COMPONENT_DELIMITER + COMPONENT + FORWARDSLASH + resourceID;