diff --git a/src/cartservice/generate_protos.bat b/src/cartservice/genproto.bat
similarity index 100%
rename from src/cartservice/generate_protos.bat
rename to src/cartservice/genproto.bat
diff --git a/src/cartservice/genproto.sh b/src/cartservice/genproto.sh
new file mode 100755
index 0000000..d6aac99
--- /dev/null
+++ b/src/cartservice/genproto.sh
@@ -0,0 +1,26 @@
+#!/bin/bash -eu
+#
+# Copyright 2018 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Generate the C# code for .proto files
+set -e
+
+PROTODIR=../../pb
+
+# enter this directory
+CWD="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+protoc --csharp_out=$CWD/grpc_genproto -I $PROTODIR $PROTODIR/demo.proto
+