ASP.NET WebService Error

An Error was Found : 

An endpoint configuration section for contract 'TempConvert.TempConvertSoap' could not be loaded because more than one endpoint configuration for that contract was found. Please indicate the preferred endpoint configuration section by name.

You should : 
Open your web.config or app.config
Find Binding ...
Then, on your SoapClient

Replace

TempConvertSoapClient svc = new TempConvertSoapClient();
with
TempConvertSoapClient svc = new TempConvertSoapClient("TempConvertSoap");