ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Core.Geoprocessing Namespace / IGPResult Interface / ReturnValue Property
Example Version

ReturnValue Property
Returns execution result value as a string or null if tool execution fails.
Syntax
string ReturnValue {get;}
Example
Multi Ring Buffer
//The data referenced in this snippet can be downloaded from the arcgis-pro-sdk-community-samples repo
//https://github.com/Esri/arcgis-pro-sdk-community-samples
async Task<IGPResult> CreateRings(EditingTemplate currentTemplate)
{
  var paramsArray = Geoprocessing.MakeValueArray(currentTemplate.MapMember.Name,
              @"C:\Data\FeatureTest\FeatureTest.gdb\Points_MultipleRingBuffer",
              new List<string> { "1000", "2000" }, "Meters", "Distance",
              "ALL", "FULL");

  IGPResult ringsResult = await Geoprocessing.ExecuteToolAsync("Analysis.MultipleRingBuffer", paramsArray);
  var messages = string.IsNullOrEmpty(gpResult.ReturnValue)
          ? $@"Error in gp tool: {gpResult.ErrorMessages}"
          : $@"Ok: {gpResult.ReturnValue}";

  return ringsResult;
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also