ILSpy 7.2 Preview 1

New Language Features

• Adjusted pattern detection for Roslyn 3.11
• C# 7.0 pattern matching
• C# 9 covariant returns

Contributions

• Updated ReadyToRun. (by @cshung in #2489)
• Analyzers: Return valid modules only. (by @zvirja in #2496)
• Extensibility: Make SearchTermMatches virtual. (by @beaverden in #2494)
• Support loading compressed Xamarin assemblies. (by @cpraehaus in #2471)
• Fix null check in BamlDecompilerTypeSystem.HasType (by @yyjdelete in #2509)

Visual Studio AddIn

• Allow to open ILSpy on project and package references

Enhancements

• Add "Extract package entry" context menu entry for binaries inside bundles/packages.
• Better support for voice commands/keyboard navigation.
• Proper support for long paths in Windows 10 in WholeProjectDecompiler.
• IL disassembly: Option to show raw offsets and instruction bytes.
• IL disassembly: Show header sizes.
• Add simple public API for XamlDecompiler

Bug fixes

• #2379: This fixes an issue where return statements within try-blocks could turn into goto statements.
• #2052: BAML-to-XAML: Resolve namespaces of properties
• #1858 and #2188: Improved decompilation of display-classes.
• #2424: Suppress the string==null special-case within the string class itself.
• #2092: aggressively inline code in compiler-generated lambdas and expression trees.
• And many other fixes, for a full list click here.

ILSpy 7.1

General

• Adjusted pattern detection for Roslyn 3.10

Cross-platform support

• Fix #2417: ilspycmd is crashing if no valid ICU package is found.
• Fix DotNetCorePathFinder on Unix systems: realpath always returned garbage
• Fix #2358: use current Path.DirectorySeparatorChar instead of hard-coded backslashes.

Contributions

• Support for .NET 6 single-file bundles. (by @vitek-karas in #2373)
• Added .vsconfig. (by @joshuacookdev in #2376)
• Chinese translation updates. (by @maikebing in #2385)
• Fix #2406: for readonly property with only getter, move readonly to property instead of getter (by @yyjdelete in #2408)
• #2409: Styling of windows title bar is now optional. (by @tom-englert in #2412)
• 6a34df5: small bug fix in the metadata explorer UI by @marwie
• Fixed a source generation bug in ReflectionDisassembler: Identifiers containing multiple consecutive dots were not properly escaped. (#2386 by @DarkOoze)

Bug fixes

• #2392: Avoid some redundant casts with the ?: operator.
• #2398: TranslateCondition: truncate condition value if necessary
• #2391: mark method as unsafe when passing null to a parameter of pointer type.
• #2396: Extend the #1903 workaround to unconstrained generic types.
• #2389: missing extern keyword for properties and events.
• #2395: Do not use for->foreach transform if collection is not an array.
• #2390: Add support for generic object initializers.
• #2390: Make sure all unused captured variables are removed even in lambdas.
• #2407: Operator '-' cannot be applied to operand of type 'nuint'
• #2354: decompilation of unary and binary operators with nullable value types.
• And many other fixes, for a full list click here.

ILSpy 7.0

New Language Features

• C# 9.0: record classes
• C# 9.0: with expressions
• C# 9.0: primary constructors
• Support for .NET 5 custom calling conventions
• Improved support for Unsafe-intrinsics

UI Improvements

• Dark mode (@tom-englert in #2347)
• .NET bundles and Nuget packages are now directly embedded in the tree view
• Search enabled in NuGet packages
• Added setting highlight the current line in the code view (see #2224, by @DickvdBrink)
• Simple UI language switching support

General

• Support for .NET bundles (see #2191)
• Detect use of csc /deterministic switch
• Improve assembly resolver API to allow async usage
• #2286: Enable server-mode GC in ILSpy
• Building ILSpy for .NET 5 is now possible (see multitargeting.props.template)
• Improved project/solution decompilation (see #2186, by @wwh1004)
• Updated ReadyToRun (see #2238 & #2279, by @cshung)
• Added inline display of CustomDebugInformation table entries in metadata
• Add metadata tree nodes for blob, guid, string and user string heap
• Performance improvements in DataGrid filter (by @tom-englert)
• Adjust fitness calculation for destructors (by @MikeFH in #2344)
• Refactored insertion of search results (by @MikeFH in #2335)
• Align dependencies with Roslyn 3.8.0, see #2173 (affects ICSharpCode.Decompiler NuGet package users)
• Removed the dependency on Humanizer (see #2232 and #2235)

Bug fixes

• Fix #2192: Add support for VB.NET delegate construction
• Fix #2195: foreach loop conversion accidentally removes end container labels
• Fix #2197: .NET 5 RC2: "Analyze/Used By" throws BadImageFormatException
• Fix #2196: Add support for extern local functions.
• Fix #1079: CSharpFormattingOptions.AutoPropertyFormatting has no effect
• Fix #2222: switch-expression does not support implicit conversions.
• #2241: Fix possible NRE in TypeProvider.GetTypeFromReference
• Fix #2233: ResourcesFileTreeNode no longer creates child nodes for BAML files
• Fix #2230: do not emit directly consecutive null propagation operators
• Fix #603: Single element arrays should not span multiple lines
• Fixed crash when loading DLLs with invalid sections in their .deps.json (see #2227, by @bernd5)
• #2278: Implement support for CSharpBinderFlags.InvokeSimpleName
• #2280: Add additional checks to GenerateVariableName
• #2275: Fix exception when assembly does not contain proper MetadataVersion.
• #2260: Fix switch(string) transform: handle empty cases where the C# compiler optimizes out the if
• #2288: Fix decompilation of nullable lifting in expression trees (by @wwh1004)
• PDBGen: Ignore duplicated ILFunctions (see 5a8b488)
• #2314: ILSpy incorrectly resolves a runtime dependency when dll is present in both WindowsDesktop.App and NETCore.App
• #1648 and #2133: Use simple assembly names for KnownThings to allow the resolver to use the relative framework version
• #2349: Use proper ExpressionType with DynamicCompoundAssign.
• #1512: XmlDocumentationProvider Unable to load some XML files to have special characters
• #2342: Do not generate empty names for foreach loop variables.
• #2340: Do not traverse assemblies with load errors in AssemblyList.GetAllAssemblies()
• #2356: Can't navigate if switch language in Analyze panel
• Improved decompilation of rethrow/throw and finally blocks in async methods. (see #1749, #2339 and #2353)

ILSpy 7.0 RC2

• Simple UI language switching support
• Bug fixes

ILSpy 7.0 RC1

General

• Dark mode! (big thank you to @tom-englert in #2347)
• Building ILSpy for .NET 5 is now possible (see multitargeting.props.template)
• Added inline display of CustomDebugInformation table entries in metadata
• Add metadata tree nodes for blob, guid, string and user string heap

Contributions

• Performance improvements in DataGrid filter (thanks to @tom-englert)
• Adjust fitness calculation for destructors (by @MikeFH in #2344)
• Refactored insertion of search results (by @MikeFH in #2335)
• Use correct URL format in Search MSDN command (by @yyjdelete in #2343)
• Warning fixes (by @riQQ in #2345)
• Fixed ConnectionIdRewritePass (by @wwh1004 in #2327)

Bug fixes

• PDBGen: Ignore duplicated ILFunctions (see 5a8b488)
• #2314: ILSpy incorrectly resolves a runtime dependency when dll is present in both WindowsDesktop.App and NETCore.App
• #1648 and #2133: Use simple assembly names for KnownThings to allow the resolver to use the relative framework version.
• #2349: Use proper ExpressionType with DynamicCompoundAssign.
• #1512: XmlDocumentationProvider Unable to load some XML files to have special characters
• #2342: Do not generate empty names for foreach loop variables.
• #2340: Do not traverse assemblies with load errors in AssemblyList.GetAllAssemblies()
• #2356: Can't navigate if switch language in Analyze panel.
• Improved decompilation of rethrow/throw and finally blocks in async methods. (see #1749, #2339 and #2353)
• And many other fixes, for a full list click here.

ILSpy 7.0 Preview 3

General

• Detect use of csc /deterministic switch
• Update Ready2Run (see #2279 by @cshung)
• #2286: Enable server-mode GC in ILSpy
• Improve assembly resolver API to allow async usage

UI Improvements

• Search enabled in NuGet packages
• Enable theming for message boxes (see #2276 by @AustinWise)

Bug fixes

• #2278: Implement support for CSharpBinderFlags.InvokeSimpleName
• #2280: Add additional checks to GenerateVariableName
• #2275: Fix exception when assembly does not contain proper MetadataVersion.
• #2260: Fix switch(string) transform: handle empty cases where the C# compiler optimizes out the if
• #2288: Fix decompilation of nullable lifting in expression trees (by @wwh1004)
• And many other fixes, for a full list click here.

ILSpy 7.0 Preview 2

New Language Features

• C# 9.0: record classes
• C# 9.0: with expressions
• C# 9.0: primary constructors

General

• Removed the dependency on Humanizer (see #2232 and #2235)
• Updated ReadyToRun (see #2238, by @cshung)

UI Improvements

• Added setting highlight the current line in the code view (see #2224, by @DickvdBrink)
• Fix #2205: About page should always be opened in a new tab.

Bug fixes

• Fix #1079: CSharpFormattingOptions.AutoPropertyFormatting has no effect
• Fix #2222: switch-expression does not support implicit conversions.
• #2241: Fix possible NRE in TypeProvider.GetTypeFromReference
• Fix #2233: ResourcesFileTreeNode no longer creates child nodes for BAML files
• Fix #2230: do not emit directly consecutive null propagation operators.
• Fix #603: Single element arrays should not span multiple lines
• Fixed crash when loading DLLs with invalid sections in their .deps.json (see #2227, by @bernd5)
• And many other fixes, for a full list click here.

ILSpy 7.0 Preview 1

Important note for consumers of our ICSharpCode.Decompiler NuGet package: we have aligned our dependencies with Roslyn 3.8.0, see #2173

New Language Features

• Add support for .NET 5 custom calling conventions.
• Improved support for Unsafe-intrinsics

UI Improvements

• .NET bundles and Nuget packages are now directly embedded in the tree view.

General

• Improved project/solution decompilation (see #2186, by @wwh1004)
• Support for .NET bundles (see #2191)
• Supports code generated by Roslyn 3.8.0

Bug fixes

• Fix #2192: Add support for VB.NET delegate construction
• Fix #2195: foreach loop conversion accidentally removes end container labels
• Fix #2197: .NET 5 RC2: "Analyze/Used By" throws BadImageFormatException
• Fix #2196: Add support for extern local functions.
• And many other fixes, for a full list click here.

ILSpy 6.2.1

This is a bugfix release.

• #2177: PDB Generation is confused by enhanced using statements
• #2183: Incorrect version in binding redirect for AvalonEdit
• #2174: Some compilers produce display class ctors with unused local variables
• #2182: Do not inline switch value, in case variable is reused.
• #2180: Restrict the (uint?)-1 special case to casts to integer types.
• #2185: Fix MemberIsHidden-check for local function display structs

ILSpy 6.2

New Language Features

• C# 7.0: Deconstruction
• C# 8.0: await foreach
• C# 8.0: Disposable ref structs
• C# 8.0: Enhanced using statements
• C# 8.0: switch expressions
• C# 9.0: init accessors
• C# 9.0: function pointers (see #2150)
• C# 9.0: foreach with GetEnumerator extension methods
• C# 9.0: Lambda parameter discards

General

• Add an option to enable aggressive inlining of expressions
• Add option for string.Concat decompilation
• Add an option to always qualify member references (by @Pathoschild, see #2114)
• ReadyToRun: Variable tracking in output (by @edkazcarlson, see #2067)
• ReadyToRun: Optimized debug info output (by @cshung, see #2113)
• Work on unifying the code formatting (see #2128)
• Tests upgraded to Roslyn 3.8.0-3.final

UI Improvements

• Improve performance of Metadata DataGridCell (see #2151)
• Fix #2107: Add ScrollViewer around DisplaySettingsPanel
• Metadata: Improvements/fixes by @srutzky, see #2134, #2135, #2145, #2147 and #2153
• Updated Chinese translation

Bug fixes

• Fix #2129: be more flexible about the initialization order for the async state machine
• Fix #2140: ILSpy 6.2p1 no longer respects "use discards" setting
• Fix #2139: ArgumentOutOfRangeException for some xmldoc
• Fix #2039: Code generated by VB's On Error Resume Next causes "unassigned variable" compile errors
• Fix #2156: range syntax not being detected correctly in some cases
• BAML decompiler: #2109 and #2106
• Fix #2086: Check that window belongs to ILSpy before sending it a WM_COPYDATA message.
• Fix #2090: ignore mscorlib references without public key token, when trying to resolve mscorlib. This will automatically fallback to .NET 4.0's mscorlib.dll.
• #1292: Fix some more problems with pinned locals.
• Fix #1555: Eliminate value-type temporaries emitted by mcs on field reads.
• Fix #2056: "remove branch into body" must be executed before the clone cleanup
• Fix #2101: reset removeExtraLoad flag if keepAssignmentBefore is set; implement simple case-de-duplication: abort if there are any duplicate cases.
• Fix #2100: 'value'-named auto property could not be recognized correctly.
• Fix #1441: Decompose flags enum values starting from the value with the highest Hamming Weight (popcount).