How to integrate Paytm to asp.net site You will need to create an Checksum on your server. Kindly refer the dll file for the attachment. Usage of CheckSum API: · Add provided “paytm.dll” as a “Reference” in your project. · Import namespace “paytm” in your Class with statement “using paytm”. · Now Generate CheckSum API as well as Verify CheckSum API are available as follows: o String CheckSum.generateCheckSum(String masterKey, Dictionary<String, String> parameters) o Boolean CheckSum.verifyCheckSum(String masterKey, Dictionary<String, String> parameters, StringcheckSum) · For Generating CheckSum, use following snippet code: String masterKey = “merchantKey” ; Dictionary<String, String> parameters = new Dictionary<string, string>(); parameters.Add("CHANNEL_ID", "WEB"); parameters.Add("TXN_AMOUNT", "1"); String checkSum = CheckSum.generateCheckSum(masterKey, parameters); ·