Multiple ItemSearch in one go with Amazon Advertising API using C#

[sunnykumar08]

Hi,

Anyone please provide the procedure to fetch multiple item search details using Amazon Advertising API in on ego in C#.
I'm quite unable to do this as getting the error in rcvd xml:" we have not found any item.". I'm using C# Query like below:
string requeststring = "Service=AWSECo mmerceService"
+ "&Version=2 009-03-31"
+ "&Operation=Ite mSearch"
+ "&SearchIndex=B ooks"
+ "&ResponseGroup =OfferFull"
+ "&Keywords=0781 750466,00773547 61"
+ "&MerchantId=Al l"
+ "&SearchIndex=B ooks";
SignedRequestHe lper signer=new SignedRequestHe lper();
string str = signer.sign(req ueststring);