When saving project, detect different profiles based on .NET 4 and above

ILSpy/Languages/CSharpLanguage.cs

@@ -342,6 +342,21 @@ namespace ICSharpCode.ILSpy
 				}
 
 				w.WriteElementString("AssemblyName", module.Assembly.Name.Name);
+				bool useTargetFrameworkAttribute = false;
+				var targetFrameworkAttribute = module.Assembly.CustomAttributes.FirstOrDefault(a => a.AttributeType.FullName == "System.Runtime.Versioning.TargetFrameworkAttribute");
+				if (targetFrameworkAttribute != null && targetFrameworkAttribute.ConstructorArguments.Any()) {
+					string frameworkName = (string)targetFrameworkAttribute.ConstructorArguments[0].Value;
+					string[] frameworkParts = frameworkName.Split(',');
+					string frameworkVersion = frameworkParts.FirstOrDefault(a => a.StartsWith("Version="));
+					if (frameworkVersion != null) {
+						w.WriteElementString("TargetFrameworkVersion", frameworkVersion.Substring("Version=".Length));
+						useTargetFrameworkAttribute = true;
+					}
+					string frameworkProfile = frameworkParts.FirstOrDefault(a => a.StartsWith("Profile="));
+					if (frameworkProfile != null)
+						w.WriteElementString("TargetFrameworkProfile", frameworkProfile.Substring("Profile=".Length));
+				}
+				if (!useTargetFrameworkAttribute) {
 					switch (module.Runtime) {
 						case TargetRuntime.Net_1_0:
 							w.WriteElementString("TargetFrameworkVersion", "v1.0");
@@ -355,9 +370,9 @@ namespace ICSharpCode.ILSpy
 							break;
 						default:
 							w.WriteElementString("TargetFrameworkVersion", "v4.0");
-						// TODO: Detect TargetFrameworkProfile
 							break;
 					}
+				}
 				w.WriteElementString("WarningLevel", "4");
 
 				w.WriteEndElement(); // </PropertyGroup>

ILSpy/VB/VBLanguage.cs

@@ -159,6 +159,21 @@ namespace ICSharpCode.ILSpy.VB
 				}
 
 				w.WriteElementString("AssemblyName", module.Assembly.Name.Name);
+				bool useTargetFrameworkAttribute = false;
+				var targetFrameworkAttribute = module.Assembly.CustomAttributes.FirstOrDefault(a => a.AttributeType.FullName == "System.Runtime.Versioning.TargetFrameworkAttribute");
+				if (targetFrameworkAttribute != null && targetFrameworkAttribute.ConstructorArguments.Any()) {
+					string frameworkName = (string)targetFrameworkAttribute.ConstructorArguments[0].Value;
+					string[] frameworkParts = frameworkName.Split(',');
+					string frameworkVersion = frameworkParts.FirstOrDefault(a => a.StartsWith("Version="));
+					if (frameworkVersion != null) {
+						w.WriteElementString("TargetFrameworkVersion", frameworkVersion.Substring("Version=".Length));
+						useTargetFrameworkAttribute = true;
+					}
+					string frameworkProfile = frameworkParts.FirstOrDefault(a => a.StartsWith("Profile="));
+					if (frameworkProfile != null)
+						w.WriteElementString("TargetFrameworkProfile", frameworkProfile.Substring("Profile=".Length));
+				}
+				if (!useTargetFrameworkAttribute) {
 					switch (module.Runtime) {
 						case TargetRuntime.Net_1_0:
 							w.WriteElementString("TargetFrameworkVersion", "v1.0");
@@ -172,9 +187,9 @@ namespace ICSharpCode.ILSpy.VB
 							break;
 						default:
 							w.WriteElementString("TargetFrameworkVersion", "v4.0");
-						// TODO: Detect TargetFrameworkProfile
 							break;
 					}
+				}
 				w.WriteElementString("WarningLevel", "4");
 
 				w.WriteEndElement(); // </PropertyGroup>