ESRI.ArcGIS.Geoprocessor.Geoprocessor geoprocessor = new Geoprocessor(); ESRI.ArcGIS.DataManagementTools.Dissolve d = new ESRI.ArcGIS.DataManagementTools.Dissolve(); d.in_features = dissolveTable; d.out_feature_class = System.IO.Path.Combine(dataset.Workspace.PathName, OutputFeatureClassName); d.dissolve_field = DissolveAttributesName; //d.statistics_fields = ""; d.multi_part = "MULTI_PART"; geoprocessor.Execute(d, null);