ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Data.Raster Namespace / RasterStorageDef Class / SetCompressionType Method
The RasterCompressionType to set.
Example Version

SetCompressionType Method
Sets the RasterCompressionType of the raster to be stored on this raster storage definition. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public void SetCompressionType( 
   RasterCompressionType compression
)

Parameters

compression
The RasterCompressionType to set.
Remarks
The compression type property specifies the compression method to be used to compress the raster data to be stored. LZ77 (lossless) and JPEG (lossy), and JPEG 2000 compression types are supported. By default, the compression type is set to LZ77.
Example
Write a compressed image to a raster field
QueuedTask.Run(() =>
{
  //Open the raster dataset on disk and create a compressed raster value dataset object
  var dataStore = new ArcGIS.Core.Data.FileSystemDatastore(new ArcGIS.Core.Data.FileSystemConnectionPath(new System.Uri(@"e:\temp"), ArcGIS.Core.Data.FileSystemDatastoreType.Raster));
  using (var fileRasterDataset = dataStore.OpenDataset<ArcGIS.Core.Data.Raster.RasterDataset>("Hydrant.jpg"))
  {
    var storageDef = new ArcGIS.Core.Data.Raster.RasterStorageDef();
    storageDef.SetCompressionType(ArcGIS.Core.Data.Raster.RasterCompressionType.JPEG);
    storageDef.SetCompressionQuality(90);

    var rv = new ArcGIS.Core.Data.Raster.RasterValue();
    rv.SetRasterDataset(fileRasterDataset);
    rv.SetRasterStorageDef(storageDef);

    var sel = MapView.Active.Map.GetSelection();

    //insert a raster value object into the raster field
    var insp = new ArcGIS.Desktop.Editing.Attributes.Inspector();
    insp.Load(sel.ToDictionary().Keys.First(), sel.ToDictionary().Values.First());
    insp["Photo"] = rv;

    var op = new EditOperation() { Name = "Raster Inspector" };
    op.Modify(insp);
    if (!op.IsEmpty)
    {
      var result = op.Execute(); //Execute and ExecuteAsync will return true if the operation was successful and false if not
    }
  }
});
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also