Index: clang/lib/Format/UnwrappedLineParser.cpp
===================================================================
--- clang/lib/Format/UnwrappedLineParser.cpp
+++ clang/lib/Format/UnwrappedLineParser.cpp
@@ -1927,6 +1927,12 @@
         parseBracedList();
       }
       break;
+    case tok::equal:
+      if (Style.isCSharp() && FormatTok->is(TT_FatArrow))
+        parseBracedList();
+      else
+        nextToken();
+      break;
     case tok::kw_class:
       if (Style.Language == FormatStyle::LK_JavaScript)
         parseRecord(/*ParseAsExpr=*/true);
Index: clang/unittests/Format/FormatTestCSharp.cpp
===================================================================
--- clang/unittests/Format/FormatTestCSharp.cpp
+++ clang/unittests/Format/FormatTestCSharp.cpp
@@ -640,6 +640,34 @@
     };
 })",
                MicrosoftStyle);
+
+  verifyFormat("void bar()\n"
+               "{\n"
+               "    Function(Val, (Action)(() => {\n"
+               "                 lock (mylock)\n"
+               "                 {\n"
+               "                     if (true)\n"
+               "                     {\n"
+               "                         A.Remove(item);\n"
+               "                     }\n"
+               "                 }\n"
+               "             }));\n"
+               "}",
+               MicrosoftStyle);
+
+  verifyFormat("void baz()\n"
+               "{\n"
+               "    Function(Val, (Action)(() => {\n"
+               "                 using (var a = new Lock())\n"
+               "                 {\n"
+               "                     if (true)\n"
+               "                     {\n"
+               "                         A.Remove(item);\n"
+               "                     }\n"
+               "                 }\n"
+               "             }));\n"
+               "}",
+               MicrosoftStyle);
 }
 
 TEST_F(FormatTestCSharp, CSharpObjectInitializers) {