Google.Cloud.BigQuery.Connection.V1 is a.NET client library for the BigQuery Connection API.
Note:
This documentation is for version 2.6.0 of the library.
Some samples may not work with other versions.
Installation
Install the Google.Cloud.BigQuery.Connection.V1 package from NuGet. Add it to
your project in the normal way (for example by right-clicking on the
project in Visual Studio and choosing "Manage NuGet Packages...").
Authentication
When running on Google Cloud Platform, no action needs to be taken to authenticate.
Otherwise, the simplest way of authenticating your API calls is to
download a service account JSON file then set the GOOGLE_APPLICATION_CREDENTIALS environment variable to refer to it.
The credentials will automatically be used to authenticate. See the Getting Started With
Authentication guide for more details.
Create a client instance by calling the static Create or CreateAsync methods. Alternatively,
use the builder class associated with each client class (e.g. ConnectionServiceClientBuilder for ConnectionServiceClient)
as an easy way of specifying custom credentials, settings, or a custom endpoint. Clients are thread-safe,
and we recommend using a single instance across your entire application unless you have a particular need
to configure multiple client objects separately.
Using the REST (HTTP/1.1) transport
This library defaults to performing RPCs using gRPC using the binary Protocol Buffer wire format.
However, it also supports HTTP/1.1 and JSON, for situations where gRPC doesn't work as desired. (This is typically due to an incompatible proxy
or other network issue.) To create a client using HTTP/1.1, specify a RestGrpcAdapter reference for the GrpcAdapter property in the client builder.
Sample code:
var client = new ConnectionServiceClientBuilder
{
GrpcAdapter = RestGrpcAdapter.Default
}.Build();
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThis page documents version 2.6.0 of the \u003ccode\u003eGoogle.Cloud.BigQuery.Connection.V1\u003c/code\u003e .NET client library, which interfaces with the BigQuery Connection API.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of this library is 2.9.0, and multiple earlier versions are also available for use, with the documentation showing versions as far back as 1.2.0.\u003c/p\u003e\n"],["\u003cp\u003eAuthentication for this library is seamless on Google Cloud Platform; for other environments, it can be done by setting the \u003ccode\u003eGOOGLE_APPLICATION_CREDENTIALS\u003c/code\u003e environment variable.\u003c/p\u003e\n"],["\u003cp\u003eAll operations within this library are conducted through the \u003ccode\u003eConnectionServiceClient\u003c/code\u003e, which can be instantiated via the \u003ccode\u003eCreate\u003c/code\u003e or \u003ccode\u003eCreateAsync\u003c/code\u003e methods, or customized using the \u003ccode\u003eConnectionServiceClientBuilder\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe library defaults to gRPC but also supports HTTP/1.1 transport, which can be specified using a \u003ccode\u003eRestGrpcAdapter\u003c/code\u003e in the client builder for instances where gRPC is not suitable.\u003c/p\u003e\n"]]],[],null,[]]
