map<string,string> implementation in grpc for .netCore - dictionary

Question

Using a map in the proto file of grpc for .net core to send a dictionary as a request parameter makes it private field(read-only) in the auto-generated code. So I am unable to assign the dictionary to map and pass it in the API request. How do I make it read-write.?
Sample proto request:
service xyz{
rpc testTrans(TestRequest) returns (TestResponse);
}
message TestRequest {
map<string,string> props = 1;
}
so the auto-generated code looks like this :
public const int PropsFieldNumber = 1;
private static readonly pbc::MapField<string, string>.Codec _map_Props_codec
= new pbc::MapField<string, string>.Codec(pb::FieldCodec.ForString(10), pb::FieldCodec.ForString(18), 10);
private readonly pbc::MapField<string, string> Props_ = new pbc::MapField<string, string>();
[global::System.Diagnostics.DebuggerNonUserCodeAttribute]
public pbc::MapField<string, string> Props {
get { return Props_; }
}
So now when i try to assign property in request as below, it throws error :
Property or Indexer TestRequest.Props could not be assigned to -- it is read only.
public static void testTrans(Dictionary<string, string> test)
{
var res = client.InitTrans(new TestRequest
{
Props = test
});
}

Answer 1

It seems like there is being prevented when you want to directly declare and initialize the value with:
var res = client.InitTrans(new TestRequest
{
//Property could not be assigned to -- it is read only...error
Props = new Map<string,string>.Add("somekey", "somevalue");
// Alternatively the same problem will also occur when you do
// Props = new Map<string,string>.Add(SomeDict);
}
Instead there should be work around by initializing your variable and then add the value(s) to the dictionary later (after the initialization of the entire message object).
var res = new TestRequest{};
//test is some dictionary
res.TestRequest.Props.Add(test);
//alternatively you can also add with (key, value)
res.TestRequest.Props.Add("someKey", "someValue);