c# Connection string

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in the example the following string is created

http://doc.prestashop.com/display/PS14/3.1+-+Access+the+web+service

webService = new PrestaShopWebservice( 'http://mystore.com/', 'ZR92FNY5UFRERNI3O9Z5QDHWKTP3YIIT', false );

to connect to webservice,

 

​I am using c# what would the equivalent be ?Thanks for the help