# BaseUrl `Get|Let {String}` 设置所有请求共享的基本URL以及附加请求资源的基本URL。 ``` '// Desired URLs '// https://api.example.com/v1/messages '// https://api.example.com/v1/users/id '// BaseUrl <- ^ -> Resource Dim Client As New WebClient Client.BaseUrl = "https://api.example.com/v1/" Dim Request As New WebRequest Request.Resource = "messages" Request.Resource = "users/{id}" ```