topic Re: Use ExecuteToolAsync to run TopoToRaster in ArcGIS Pro SDK Questions

Use ExecuteToolAsync to run TopoToRaster

sz66666 — Sun, 23 Mar 2025 17:32:13 GMT

Hi,

I'm trying to use ExecuteToolAsync () to run the tool TopoToRaster but I could not figure it out.

Not sure what the parameters are required to run it.
can someone help out please?

Re: Use ExecuteToolAsync to run TopoToRaster

SumitMishra_016 — Mon, 24 Mar 2025 06:17:00 GMT

Hi @sz66666 ,

Can you try like this:

// Create the parameter array for the TopoToRaster tool var parameters = Geoprocessing.MakeValueArray( inTopoFeatures, cellSize, extent, margin, minimumZValue, maximumZValue, enforce, dataType, maximumIterations, roughnessPenalty, discreteErrorFactor, verticalStandardError, tolerance1, tolerance2, outStreamFeatures, outSinkFeatures, outDiagnosticFile, outParameterFile, profilePenalty, outResidualFeature, outStreamCliffErrorFeature, outContourErrorFeature ); // Set execute flags GPExecuteToolFlags executeFlags = GPExecuteToolFlags.AddOutputsToMap | GPExecuteToolFlags.GPThread | GPExecuteToolFlags.AddToHistory | GPExecuteToolFlags.RefreshProjectItems; // Execute the TopoToRaster tool IGPResult gpResult = await Geoprocessing.ExecuteToolAsync("SpatialAnalyst.TopoToRaster", parameters, null, null, null, executeFlags); // Show the messages Geoprocessing.ShowMessageBox(gpResult.Messages, "TopoToRaster Messages", gpResult.IsFailed ? GPMessageBoxStyle.Error : GPMessageBoxStyle.Default);

Re: Use ExecuteToolAsync to run TopoToRaster

sz66666 — Mon, 24 Mar 2025 14:11:36 GMT

Thank you for the reply. by any chance you know what should be passed as the input feature. The documentation said it needs to specify the elevation field. In my case it will be the TopoPointElevation but Im not sure how to create that in C#.

below is the explanation of the input feature :

Each feature input can have a field specified that contains the z-values and one of six types specified.

Feature layer—The input feature dataset.
Field—The name of the field that stores the attributes, where appropriate.
Type—The type of input feature dataset.

and below is the python example it provides:
outTTR = TopoToRaster([TopoPointElevation([['spots', 'spot_meter']]), TopoContour([['contours', 'spot_meter']]), TopoCliff(['cliff'])], 60, "#", "#", "#", "#", "NO_ENFORCE")

https://pro.arcgis.com/en/pro-app/3.3/tool-reference/spatial-analyst/topo-to-raster.htm

Re: Use ExecuteToolAsync to run TopoToRaster

sz66666 — Wed, 26 Mar 2025 14:18:14 GMT

Re: Use ExecuteToolAsync to run TopoToRaster

Wolf — Wed, 26 Mar 2025 14:54:08 GMT

I attached a sample Button OnClick method that includes all parameters and environment settings to call the 'Topo to Raster' GP Tool. To figure out in what form to pass in the parameter values I usually use the following approach:

- I run the GP Tool manually and define all needed parameters

- After the GP Tool completes, I click the "Open History" link to open the Geoprocessing History tab

- I right click on the GP Tool and select the "Copy Python Command" from the context menu.

- I then paste the 'Python Command' syntax into a text editor to see the parameter value formats.

- I use the python command's parameter format to fill in the parameters for the ExecuteToolAsync call