public FileSystemDatastore( 
   FileSystemConnectionPath connectionPath
)

{
  await QueuedTask.Run(() =>
  {
    FileSystemConnectionPath fileConnection = new FileSystemConnectionPath(new Uri("path\\to\\folder\\containing\\shapefiles"),
        FileSystemDatastoreType.Shapefile);
    using (FileSystemDatastore shapefile = new FileSystemDatastore(fileConnection))
    {
      FeatureClass taxLotsFeatureClass = shapefile.OpenDataset<FeatureClass>("TaxLots");

      // Can use the .shp extension, but its not needed.
      FeatureClass manHolesFeatureClass = shapefile.OpenDataset<FeatureClass>("ManHoles.shp");

      Table taxDetailsTableWithoutExtension = shapefile.OpenDataset<Table>("TaxDetails");
      Table taxDetailsTable = shapefile.OpenDataset<Table>("TaxDetails.dbf");
    }
  });
}

{
  await QueuedTask.Run(() =>
  {
    FileSystemConnectionPath fileConnection = new FileSystemConnectionPath(new Uri("path\\to\\folder\\containing\\CAD"), FileSystemDatastoreType.Cad);
    using (FileSystemDatastore cadDatastore = new FileSystemDatastore(fileConnection))
    {
      //Note: Extension is required
      FeatureClass cadDataset = cadDatastore.OpenDataset<FeatureClass>("hatchplayboundaries.dwg");

      // Take note of the pattern for referencing a feature class. 
      FeatureClass cadfeatureClass = cadDatastore.OpenDataset<FeatureClass>("hatchplayboundaries.dwg:Polyline");

      int numRows = 0;
      using (RowCursor cursor = cadfeatureClass.Search())
      {
        while (cursor.MoveNext())
          numRows++;
      }
    }
  });
}

// Create a FileSystemConnectionPath using the folder path.
FileSystemConnectionPath connectionPath = new(new System.Uri(@"C:\Temp"), FileSystemDatastoreType.Raster);
// Create a new FileSystemDatastore using the FileSystemConnectionPath.
FileSystemDatastore dataStore = new(connectionPath);
// Open the raster dataset.
RasterDataset fileRasterDataset = dataStore.OpenDataset<RasterDataset>("Sample.tif");

{
  //Note: This snippet requires to be run on the MCT (Main CIM Thread)
  string path = @"d:\Data\Tin";
  var fileConnection = new FileSystemConnectionPath(new Uri(path), FileSystemDatastoreType.Tin);

  using (FileSystemDatastore dataStore = new FileSystemDatastore(fileConnection))
  {
    // TIN is in a folder at d:\Data\Tin\TinDataset

    string dsName = "TinDataset";

    using (var dataset = dataStore.OpenDataset<ArcGIS.Core.Data.Analyst3D.TinDataset>(dsName))
    {
      //Do something with the dataset
    }
  }
}

{
  //Note: This snippet requires to be run on the MCT (Main CIM Thread)
  string path = @"d:\Data\Tin";
  var fileConnection = new FileSystemConnectionPath(new Uri(path), FileSystemDatastoreType.Tin);

  using (FileSystemDatastore dataStore = new FileSystemDatastore(fileConnection))
  {
    // TIN is in a folder at d:\Data\Tin\TinDataset

    string dsName = "TinDataset";

    using (var def = dataStore.GetDefinition<ArcGIS.Core.Data.Analyst3D.TinDatasetDefinition>(dsName))
    {
      //Do something with the definition
    }
  }
}

{
  //Note: Use QueuedTask.Run to run on the MCT 

  string path = @"d:\Data\LASDataset";
  var fileConnection = new FileSystemConnectionPath(new Uri(path), FileSystemDatastoreType.LasDataset);

  using (FileSystemDatastore dataStore = new FileSystemDatastore(fileConnection))
  {
    string name = "utrecht_tile.lasd";      // can specify with or without the .lasd extension

    using (var dataset = dataStore.OpenDataset<ArcGIS.Core.Data.Analyst3D.LasDataset>(name))
    {

    }
  }
}

{
  //Note: Use QueuedTask.Run to run on the MCT
  string path = @"d:\Data\LASDataset";
  var fileConnection = new FileSystemConnectionPath(new Uri(path), FileSystemDatastoreType.LasDataset);

  using (FileSystemDatastore dataStore = new FileSystemDatastore(fileConnection))
  {
    string name = "utrecht_tile.lasd";      // can specify with or without the .lasd extension

    using (var dataset = dataStore.GetDefinition<ArcGIS.Core.Data.Analyst3D.LasDatasetDefinition>(name))
    {
      //Use the dataset
    }
  }