public CIMRasterColorizer GetColorizer()

{
    // Get the colorizer from the raster layer.
    //Note: needs to be called on the QueuedTask
    CIMRasterColorizer rasterColorizer = rasterLayer.GetColorizer();
    // Update raster colorizer properties.
    rasterColorizer.Brightness = 10;
    rasterColorizer.Contrast = -5;
    rasterColorizer.ResamplingType = RasterResamplingType.NearestNeighbor;
    // Update the raster layer with the changed colorizer.
    rasterLayer.SetColorizer(rasterColorizer);
}

{
    // Get the colorizer from the raster layer.
    //Note: needs to be called on the QueuedTask
    CIMRasterColorizer rColorizer = rasterLayer.GetColorizer();
    // Check if the colorizer is an RGB colorizer.
    if (rColorizer is CIMRasterRGBColorizer rasterRGBColorizer)
    {
        // Update RGB colorizer properties.
        rasterRGBColorizer.StretchType = RasterStretchType.ESRI;
        // Update the raster layer with the changed colorizer.
        rasterLayer.SetColorizer(rasterRGBColorizer);
    }
}

{
    // Get the image sub-layer from the mosaic layer.
    //Note: needs to be called on the QueuedTask
    ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
    // Get the colorizer from the image sub-layer.
    CIMRasterColorizer rasterColorizer = mosaicImageSubLayer.GetColorizer();
    // Update raster colorizer properties.
    rasterColorizer.Brightness = 10;
    rasterColorizer.Contrast = -5;
    rasterColorizer.ResamplingType = RasterResamplingType.NearestNeighbor;
    // Update the image sub-layer with the changed colorizer.
    mosaicImageSubLayer.SetColorizer(rasterColorizer);
}

{
    // Get the image sub-layer from the mosaic layer.
    //Note: needs to be called on the QueuedTask
    ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
    // Get the colorizer from the image sub-layer.
    CIMRasterColorizer rColorizer = mosaicImageSubLayer.GetColorizer();
    // Check if the colorizer is an RGB colorizer.
    if (rColorizer is CIMRasterRGBColorizer rasterRGBColorizer)
    {
        // Update RGB colorizer properties.
        rasterRGBColorizer.StretchType = RasterStretchType.ESRI;
        // Update the image sub-layer with the changed colorizer.
        mosaicImageSubLayer.SetColorizer(rasterRGBColorizer);
    }
}

{
    // Get the colorizer from the image service layer.

    CIMRasterColorizer rasterColorizer = imageServiceLayer.GetColorizer();
    // Update the colorizer properties.
    rasterColorizer.Brightness = 10;
    rasterColorizer.Contrast = -5;
    rasterColorizer.ResamplingType = RasterResamplingType.NearestNeighbor;
    // Update the image service layer with the changed colorizer.
    imageServiceLayer.SetColorizer(rasterColorizer);
}

{
    // Get the colorizer from the image service layer.
    //Note: needs to be called on the QueuedTask
    CIMRasterColorizer rColorizer = imageServiceLayer.GetColorizer();
    // Check if the colorizer is an RGB colorizer.
    if (rColorizer is CIMRasterRGBColorizer rasterRGBColorizer)
    {
        // Update RGB colorizer properties.
        rasterRGBColorizer.StretchType = RasterStretchType.ESRI;
        // Update the image service layer with the changed colorizer.
        imageServiceLayer.SetColorizer((CIMRasterColorizer)rasterRGBColorizer);
    }
}

//If a raster dataset has statistics, you can create a raster layer and get these statistics by accessing the colorizer.
await QueuedTask.Run(() =>
{
  //Accessing the raster layer
  var lyr = MapView.Active.Map.GetLayersAsFlattenedList().OfType<BasicRasterLayer>().FirstOrDefault();
  //Getting the colorizer
  var colorizer = lyr.GetColorizer() as CIMRasterStretchColorizer;
  //Accessing the statistics
  var stats = colorizer.StretchStats;
  var max = stats.max;
  var min = stats.min;
});