https://community.esri.com/t5/arcgis-runtime-sdk-for-wpf-retired-questions/loaderror-quot-a-null-pointer-invalid-raster/m-p/1571431#M3849 <DIV>public static async Task&lt;Raster&gt; ApplyRasterForService(string rasterID, string theJSON_String, Raster currentRaster = null)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //RasterLayer rasterLayer = null;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Raster raster = null;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; try</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (rasterID.Contains("Layout"))</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rasterID = rasterID.Replace("_Layout", "");</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (MainWindow.Instance.ImageDetails3D.ContainsKey(rasterID))</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; List&lt;object&gt; details = MainWindow.Instance.ImageDetails3D[rasterID];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int objectID = (int)details[0];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string sensorName = (string)details[1];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string imageurl = (string)details[2];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string sceneid = (string)details[3];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ImageServiceRaster imageServiceRaster = new ImageServiceRaster(new Uri(imageurl));</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; await imageServiceRaster.LoadAsync();</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (imageServiceRaster.LoadStatus == Esri.ArcGISRuntime.LoadStatus.Loaded)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MosaicRule mosaicrule = new MosaicRule</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MosaicMethod = MosaicMethod.LockRaster,</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; LockRasterIds = { objectID },</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MosaicOperation = MosaicOperation.Max</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; };</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; imageServiceRaster.MosaicRule = mosaicrule;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //RasterLayer SelectedRasterLayer = new RasterLayer(imageServiceRaster);</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //SelectedRasterLayer.Id = sceneid;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //SelectedRasterLayer.Name = sensorName;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //string Url = SelectedRasterLayer.Raster.Path;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //await SelectedRasterLayer.LoadAsync();</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; RasterFunction myRasterFunction = RasterFunction.FromJson(theJSON_String);</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; RasterFunctionArguments myRasterFunctionArguments = myRasterFunction.Arguments;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ReadOnlyCollection&lt;string&gt; myRasterNames = (ReadOnlyCollection&lt;string&gt;)myRasterFunctionArguments.GetRasterNames();</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (myRasterNames.Count == 0)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (currentRaster != null)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; myRasterFunctionArguments.SetRaster((string)myRasterNames[0], currentRaster);</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; myRasterFunctionArguments.SetRaster((string)myRasterNames[0], imageServiceRaster);</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; raster = new Raster(myRasterFunction);</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; await raster.LoadAsync();</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //rasterLayer = new RasterLayer(raster);</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //await rasterLayer.LoadAsync();</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; catch (Exception ex)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return raster;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp;string theJSON_String =</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; @"{</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""raster_function_arguments"":</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""band_ids"":{ ""int_array"":" + bandIds + @",""type"":""Raster_function_variable""},</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""missing_band_action"":{ ""int"":""0"",""type"":""Raster_function_variable""},</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""type"":""Raster_function_arguments"",</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""raster"":{ ""name"":""$$"",""is_raster"":true,""type"":""Raster_function_variable""},</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""nbits"":{ ""int"":8,""type"":""Raster_function_variable""}</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; },</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""raster_function"":{ ""type"":""Extractband_function""},</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""type"":""Raster_function_template""</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }";</DIV><DIV>&nbsp;</DIV><DIV>While loading raster, I am getting an exception of LoadError: {"A null pointer: Invalid raster function"}</DIV><DIV>&nbsp;</DIV><DIV>What am I missing?&nbsp;</DIV> Fri, 27 Dec 2024 10:22:53 GMT KayalvizhiK 2024-12-27T10:22:53Z https://community.esri.com/t5/arcgis-runtime-sdk-for-wpf-retired-questions/loaderror-quot-a-null-pointer-invalid-raster/m-p/1571431#M3849 <DIV>public static async Task&lt;Raster&gt; ApplyRasterForService(string rasterID, string theJSON_String, Raster currentRaster = null)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //RasterLayer rasterLayer = null;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Raster raster = null;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; try</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (rasterID.Contains("Layout"))</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rasterID = rasterID.Replace("_Layout", "");</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (MainWindow.Instance.ImageDetails3D.ContainsKey(rasterID))</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; List&lt;object&gt; details = MainWindow.Instance.ImageDetails3D[rasterID];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int objectID = (int)details[0];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string sensorName = (string)details[1];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string imageurl = (string)details[2];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string sceneid = (string)details[3];</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ImageServiceRaster imageServiceRaster = new ImageServiceRaster(new Uri(imageurl));</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; await imageServiceRaster.LoadAsync();</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (imageServiceRaster.LoadStatus == Esri.ArcGISRuntime.LoadStatus.Loaded)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MosaicRule mosaicrule = new MosaicRule</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MosaicMethod = MosaicMethod.LockRaster,</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; LockRasterIds = { objectID },</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MosaicOperation = MosaicOperation.Max</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; };</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; imageServiceRaster.MosaicRule = mosaicrule;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //RasterLayer SelectedRasterLayer = new RasterLayer(imageServiceRaster);</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //SelectedRasterLayer.Id = sceneid;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //SelectedRasterLayer.Name = sensorName;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //string Url = SelectedRasterLayer.Raster.Path;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //await SelectedRasterLayer.LoadAsync();</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; RasterFunction myRasterFunction = RasterFunction.FromJson(theJSON_String);</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; RasterFunctionArguments myRasterFunctionArguments = myRasterFunction.Arguments;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ReadOnlyCollection&lt;string&gt; myRasterNames = (ReadOnlyCollection&lt;string&gt;)myRasterFunctionArguments.GetRasterNames();</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (myRasterNames.Count == 0)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (currentRaster != null)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; myRasterFunctionArguments.SetRaster((string)myRasterNames[0], currentRaster);</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; myRasterFunctionArguments.SetRaster((string)myRasterNames[0], imageServiceRaster);</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; raster = new Raster(myRasterFunction);</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; await raster.LoadAsync();</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //rasterLayer = new RasterLayer(raster);</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //await rasterLayer.LoadAsync();</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; catch (Exception ex)</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return raster;</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; }</DIV><DIV>&nbsp;string theJSON_String =</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; @"{</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""raster_function_arguments"":</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""band_ids"":{ ""int_array"":" + bandIds + @",""type"":""Raster_function_variable""},</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""missing_band_action"":{ ""int"":""0"",""type"":""Raster_function_variable""},</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""type"":""Raster_function_arguments"",</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""raster"":{ ""name"":""$$"",""is_raster"":true,""type"":""Raster_function_variable""},</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""nbits"":{ ""int"":8,""type"":""Raster_function_variable""}</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; },</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""raster_function"":{ ""type"":""Extractband_function""},</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ""type"":""Raster_function_template""</DIV><DIV>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }";</DIV><DIV>&nbsp;</DIV><DIV>While loading raster, I am getting an exception of LoadError: {"A null pointer: Invalid raster function"}</DIV><DIV>&nbsp;</DIV><DIV>What am I missing?&nbsp;</DIV> Fri, 27 Dec 2024 10:22:53 GMT https://community.esri.com/t5/arcgis-runtime-sdk-for-wpf-retired-questions/loaderror-quot-a-null-pointer-invalid-raster/m-p/1571431#M3849 KayalvizhiK 2024-12-27T10:22:53Z