Google.Cloud.DataCatalog.V1is a.NET client library for theData Catalog API.
Note:
This documentation is for version2.16.0of the library.
Some samples may not work with other versions.
Installation
Install theGoogle.Cloud.DataCatalog.V1package 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, no action needs to be taken to authenticate.
Otherwise, the simplest way of authenticating your API calls is to
set up Application Default Credentials.
The credentials will automatically be used to authenticate. SeeSet up Application Default Credentialsfor more details.
Getting started
All operations are performed through the following client classes:
Create a client instance by calling the staticCreateorCreateAsyncmethods. 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 usinggRPCusing the binaryProtocol Bufferwire 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 aRestGrpcAdapterreference for theGrpcAdapterproperty 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"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThis webpage provides documentation for the \u003ccode\u003eGoogle.Cloud.DataCatalog.V1\u003c/code\u003e .NET client library, which is used to interact with the Data Catalog API.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of the library is \u003ccode\u003e2.14.0\u003c/code\u003e, and the page lists numerous previous versions that can be accessed.\u003c/p\u003e\n"],["\u003cp\u003eAuthentication for API calls is handled automatically when running on Google Cloud, but Application Default Credentials must be set up otherwise.\u003c/p\u003e\n"],["\u003cp\u003eThe library uses three client classes, \u003ccode\u003eDataCatalogClient\u003c/code\u003e, \u003ccode\u003ePolicyTagManagerClient\u003c/code\u003e, and \u003ccode\u003ePolicyTagManagerSerializationClient\u003c/code\u003e, for performing operations.\u003c/p\u003e\n"],["\u003cp\u003eWhile the library defaults to using gRPC, it also supports the HTTP/1.1 transport with JSON via a \u003ccode\u003eRestGrpcAdapter\u003c/code\u003e for situations where gRPC is not suitable.\u003c/p\u003e\n"]]],[],null,["Version latestkeyboard_arrow_down\n\n- [2.16.0 (latest)](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/latest)\n- [2.15.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.15.0)\n- [2.14.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.14.0)\n- [2.13.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.13.0)\n- [2.12.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.12.0)\n- [2.11.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.11.0)\n- [2.10.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.10.0)\n- [2.9.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.9.0)\n- [2.8.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.8.0)\n- [2.7.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.7.0)\n- [2.6.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.6.0)\n- [2.5.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.5.0)\n- [2.4.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.4.0)\n- [2.3.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.3.0)\n- [2.2.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.2.0)\n- [2.1.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.1.0)\n- [2.0.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/2.0.0)\n- [1.8.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/1.8.0)\n- [1.7.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/1.7.0)\n- [1.6.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/1.6.0)\n- [1.5.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/1.5.0)\n- [1.4.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/1.4.0)\n- [1.3.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/1.3.0)\n- [1.2.0](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/1.2.0) \n\nGoogle.Cloud.DataCatalog.V1\n===========================\n\n`Google.Cloud.DataCatalog.V1` is a.NET client library for the [Data Catalog API](https://cloud.google.com/data-catalog/docs).\n\nNote:\nThis documentation is for version `2.16.0` of the library.\nSome samples may not work with other versions.\n\nInstallation\n------------\n\nInstall the `Google.Cloud.DataCatalog.V1` package from NuGet. Add it to\nyour project in the normal way (for example by right-clicking on the\nproject in Visual Studio and choosing \"Manage NuGet Packages...\").\n\nAuthentication\n--------------\n\nWhen running on Google Cloud, no action needs to be taken to authenticate.\n\nOtherwise, the simplest way of authenticating your API calls is to\nset up Application Default Credentials.\nThe credentials will automatically be used to authenticate. See\n[Set up Application Default Credentials](https://cloud.google.com/docs/authentication/provide-credentials-adc) for more details.\n\nGetting started\n---------------\n\nAll operations are performed through the following client classes:\n\n- [DataCatalogClient](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/latest/Google.Cloud.DataCatalog.V1.DataCatalogClient)\n- [PolicyTagManagerClient](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/latest/Google.Cloud.DataCatalog.V1.PolicyTagManagerClient)\n- [PolicyTagManagerSerializationClient](/dotnet/docs/reference/Google.Cloud.DataCatalog.V1/latest/Google.Cloud.DataCatalog.V1.PolicyTagManagerSerializationClient)\n\nCreate a client instance by calling the static `Create` or `CreateAsync` methods. Alternatively,\nuse the builder class associated with each client class (e.g. DataCatalogClientBuilder for DataCatalogClient)\nas an easy way of specifying custom credentials, settings, or a custom endpoint. Clients are thread-safe,\nand we recommend using a single instance across your entire application unless you have a particular need\nto configure multiple client objects separately.\n\n### Using the REST (HTTP/1.1) transport\n\nThis library defaults to performing RPCs using [gRPC](https://grpc.io/) using the binary [Protocol Buffer](https://protobuf.dev) wire format.\nHowever, 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\nor other network issue.) To create a client using HTTP/1.1, specify a `RestGrpcAdapter` reference for the `GrpcAdapter` property in the client builder.\nSample code: \n\n var client = new DataCatalogClientBuilder\n {\n GrpcAdapter = RestGrpcAdapter.Default\n }.Build();\n\nFor more details, see the [transport selection](https://cloud.google.com/dotnet/docs/reference/help/transports) page."]]