Google.Cloud.DataCatalog.V1 is a.NET client library for the Data Catalog API.
Note:
This documentation is for version 2.4.0 of the library.
Some samples may not work with other versions.
Installation
Install the Google.Cloud.DataCatalog.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.
Getting started
All operations are performed through the following client classes:
Create a client instance by calling the static Create or CreateAsync methods. Alternatively,
use the builder class associated with each client class (e.g. DataCatalogClientBuilder for DataCatalogClient)
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 DataCatalogClientBuilder
{
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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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\u003eThe \u003ccode\u003eGoogle.Cloud.DataCatalog.V1\u003c/code\u003e library is a .NET client for interacting with the Google Cloud Data Catalog API, with version 2.14.0 being the latest available version.\u003c/p\u003e\n"],["\u003cp\u003eThis documentation pertains to version 2.4.0 of the \u003ccode\u003eGoogle.Cloud.DataCatalog.V1\u003c/code\u003e library, and it is important to note that certain examples may not be compatible with other versions.\u003c/p\u003e\n"],["\u003cp\u003eAuthentication with the Data Catalog API on Google Cloud Platform is automatic, while off-platform requires setting the \u003ccode\u003eGOOGLE_APPLICATION_CREDENTIALS\u003c/code\u003e environment variable to the service account JSON file.\u003c/p\u003e\n"],["\u003cp\u003eThe library offers three main client classes for performing operations: \u003ccode\u003eDataCatalogClient\u003c/code\u003e, \u003ccode\u003ePolicyTagManagerClient\u003c/code\u003e, and \u003ccode\u003ePolicyTagManagerSerializationClient\u003c/code\u003e, each created via \u003ccode\u003eCreate\u003c/code\u003e, \u003ccode\u003eCreateAsync\u003c/code\u003e, or their respective builders.\u003c/p\u003e\n"],["\u003cp\u003eWhile gRPC is the default communication method, HTTP/1.1 and JSON are also supported by setting the \u003ccode\u003eGrpcAdapter\u003c/code\u003e property to \u003ccode\u003eRestGrpcAdapter.Default\u003c/code\u003e in the client builder.\u003c/p\u003e\n"]]],[],null,[]]
