diff --git a/csharp/generate_protos.sh b/csharp/generate_protos.sh
new file mode 100755
index 0000000000..d880f3a774
--- /dev/null
+++ b/csharp/generate_protos.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+# Generates C# source files from .proto files.
+# You first need to make sure protoc has been built (see instructions on
+# building protoc in root of this repository)
+
+set -ex
+
+# cd to repository root
+cd $(dirname $0)/..
+
+# protocol buffer compiler to use
+PROTOC=src/protoc
+
+# Descriptor proto
+#TODO(jtattermusch): generate descriptor.proto
+
+# ProtocolBuffers.Test protos
+$PROTOC -Isrc --csharp_out=csharp/src/ProtocolBuffers.Test/TestProtos \
+    src/google/protobuf/unittest.proto \
+    src/google/protobuf/unittest_custom_options.proto \
+    src/google/protobuf/unittest_drop_unknown_fields.proto \
+    src/google/protobuf/unittest_enormous_descriptor.proto \
+    src/google/protobuf/unittest_import.proto \
+    src/google/protobuf/unittest_import_public.proto \
+    src/google/protobuf/unittest_mset.proto \
+    src/google/protobuf/unittest_optimize_for.proto \
+    src/google/protobuf/unknown_enum_test.proto
+
+$PROTOC -Icsharp/protos/extest --csharp_out=csharp/src/ProtocolBuffers.Test/TestProtos \
+    csharp/protos/extest/unittest_extras_xmltest.proto \
+    csharp/protos/extest/unittest_issues.proto
+
+$PROTOC -Icsharp --csharp_out=csharp/src/ProtocolBuffers.Test/TestProtos \
+    csharp/protos/google/protobuf/field_presence_test.proto
+
+$PROTOC -Ibenchmarks --csharp_out=csharp/src/ProtocolBuffers.Test/TestProtos \
+    benchmarks/google_size.proto \
+    benchmarks/google_speed.proto
+
+# ProtocolBuffersLite.Test protos
+$PROTOC -Isrc --csharp_out=csharp/src/ProtocolBuffersLite.Test/TestProtos \
+    src/google/protobuf/unittest.proto \
+    src/google/protobuf/unittest_import.proto \
+    src/google/protobuf/unittest_import_lite.proto \
+    src/google/protobuf/unittest_import_public.proto \
+    src/google/protobuf/unittest_import_public_lite.proto \
+    src/google/protobuf/unittest_lite.proto \
+    src/google/protobuf/unittest_lite_imports_nonlite.proto
+
+$PROTOC -Icsharp/protos/extest --csharp_out=csharp/src/ProtocolBuffersLite.Test/TestProtos \
+    csharp/protos/extest/unittest_extras_full.proto \
+    csharp/protos/extest/unittest_extras_lite.proto