Index: clang/lib/Format/Format.cpp
===================================================================
--- clang/lib/Format/Format.cpp
+++ clang/lib/Format/Format.cpp
@@ -14,6 +14,7 @@
 
 #include "clang/Format/Format.h"
 #include "AffectedRangeManager.h"
+#include "BreakableToken.h"
 #include "ContinuationIndenter.h"
 #include "FormatInternal.h"
 #include "FormatTokenLexer.h"
@@ -997,6 +998,12 @@
     // #imports, etc.)
     GoogleStyle.IncludeStyle.IncludeBlocks =
         tooling::IncludeStyle::IBS_Preserve;
+  } else if (Language == FormatStyle::LK_CSharp) {
+    GoogleStyle.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
+    GoogleStyle.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Never;
+    GoogleStyle.BreakStringLiterals = false;
+    GoogleStyle.ColumnLimit = 100;
+    GoogleStyle.NamespaceIndentation = FormatStyle::NI_All;
   }
 
   return GoogleStyle;
Index: clang/unittests/Format/FormatTestCSharp.cpp
===================================================================
--- clang/unittests/Format/FormatTestCSharp.cpp
+++ clang/unittests/Format/FormatTestCSharp.cpp
@@ -581,8 +581,7 @@
   FormatStyle Style = getGoogleStyle(FormatStyle::LK_CSharp);
 
   verifyFormat(R"(//
-PrintOrderDetails(orderNum: 31, productName: "Red Mug",
-                  sellerName: "Gift Shop");)",
+PrintOrderDetails(orderNum: 31, productName: "Red Mug", sellerName: "Gift Shop");)",
                Style);
 
   // Ensure that trailing comments do not cause problems.
@@ -639,8 +638,7 @@
     get { return _seconds / 3600; }
     set {
       if (value < 0 || value > 24)
-        throw new ArgumentOutOfRangeException(
-            $"{nameof(value)} must be between 0 and 24.");
+        throw new ArgumentOutOfRangeException($"{nameof(value)} must be between 0 and 24.");
       _seconds = value * 3600;
     }
   }
@@ -727,7 +725,9 @@
 
   verifyFormat(R"(//
 public class A {
-  void foo() { int? value = some.bar(); }
+  void foo() {
+    int? value = some.bar();
+  }
 })",
                Style); // int? is nullable not a conditional expression.
 
@@ -772,16 +772,15 @@
     where TKey : IComparable<TKey>
     where TVal : IMyInterface {
   public void MyMethod<T>(T t)
-      where T : IMyInterface { doThing(); }
+      where T : IMyInterface {
+    doThing();
+  }
 })",
                Style);
 
   verifyFormat(R"(//
 class ItemFactory<T>
-    where T : new(),
-              IAnInterface<T>,
-              IAnotherInterface<T>,
-              IAnotherInterfaceStill<T> {})",
+    where T : new(), IAnInterface<T>, IAnotherInterface<T>, IAnotherInterfaceStill<T> {})",
                Style);
 
   Style.ColumnLimit = 50; // Force lines to be wrapped.