ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Data Namespace / Version Class / Connect Method
Example Version

Connect Method (Version)
Physically connects to this version in the geodatabase. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public override Geodatabase Connect()

Return Value

This version's data repository.
Exceptions
ExceptionDescription
A geodatabase-related exception has occurred.
This method or property must be called within the lambda passed to QueuedTask.Run
Example
Connecting to a Version
public Geodatabase ConnectToVersion(Geodatabase geodatabase, string versionName)
{
    Geodatabase connectedVersion = null;

    if (geodatabase.IsVersioningSupported())
    {
        using (VersionManager versionManager = geodatabase.GetVersionManager())
        using (Version version = versionManager.GetVersion(versionName))
        {
            connectedVersion = version.Connect();
        }
    }
    return connectedVersion;
}
Working with Versions
public async Task WorkingWithVersions()
{
    await ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() =>
    {
        using (Geodatabase geodatabase = new Geodatabase(new DatabaseConnectionFile(new Uri("path\\to\\sde\\file"))))
        using (VersionManager versionManager = geodatabase.GetVersionManager())
        {
            IReadOnlyList<string> versionNames = versionManager.GetVersionNames();

            Version defaultVersion = versionManager.GetDefaultVersion();

            string testVersionName = versionNames.First(v => v.Contains("Test"));
            Version testVersion= versionManager.GetVersion(testVersionName);

            Version qaVersion = defaultVersion.GetChildren().First(version => version.GetName().Contains("QA"));

            Geodatabase qaVersionGeodatabase = qaVersion.Connect();

            FeatureClass currentFeatureClass = geodatabase.OpenDataset<FeatureClass>("featureClassName");
            FeatureClass qaFeatureClass = qaVersionGeodatabase.OpenDataset<FeatureClass>("featureClassName");
        }
    });
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also