Simple WCF Test Client

A simple WCF test client is included in Visual Studio.
It resides here for my Visual Studio 2017 installation:

C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\WcfTestClient.exe

How to update a wsdl definition in Visual Studio Website project

Put new wsdl file in website root ~/Services

Goto “project” -> Service References folder ->
Select the particular web service -> right click and choose
“Update service reference”

Visual Studio builds new references against this definition and
updates some files inside the service folder *.svcinfo, Reference.cs, Reference.svcmap, app.config in the project base folder.

Rebuild solution.