I'm trying to search fields from the map (uri="http://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/2"). The web page reveals that it contains many fields such as the following: Fields: OBJECTID ( type: esriFieldTypeOID , alias: OBJECTID ) Shape ( type: esriFieldTypeGeometry , alias: Shape ) NAME ( type: esriFieldTypeString , alias: NAME , length: 32 ) STATE_NAME ( type: esriFieldTypeString , alias: STATE_NAME , length: 25 ) STATE_FIPS ( type: esriFieldTypeString , alias: STATE_FIPS , length: 2 ) CNTY_FIPS ( type: esriFieldTypeString , alias: CNTY_FIPS , length: 3 ) FIPS ( type: esriFieldTypeString , alias: FIPS , length: 5 ) POP2000 ( type: esriFieldTypeInteger , alias: POP2000 ) POP2007 ( type: esriFieldTypeInteger , alias: POP2007 ) POP00_SQMI ( type: esriFieldTypeDouble , alias: POP00_SQMI ) POP07_SQMI ( type: esriFieldTypeDouble , alias: POP07_SQMI ) However, when I try to use the following code to perform the search, I always get nothing (findResults.Results always null). Can someone please help me to identify where it went wrong? Many thanks (mapUri is the map Uri above). private async Task MyQuery() { try { resultsGrid.Visibility = Visibility.Collapsed; resultsGrid.ItemsSource = null; FindTask findTask = new FindTask(mapUri); var param = new FindParameters() { LayerIDs = new List<int> { 0, 1, 2 }, SearchFields = new List<string> { "STATE_NAME" }, ReturnGeometry = true, SpatialReference = MyMapView.SpatialReference, SearchText = "Colorado" }; var findResults = await findTask.ExecuteAsync(param); if ((findResults != null) && (findResults.Results != null) && (findResults.Results.Count > 0)) { resultsGrid.ItemsSource = findResults.Results; resultsGrid.Visibility = Visibility.Visible; } else MessageBox.Show("Found Nothing!"); } catch (Exception ex) { MessageBox.Show(ex.Message, "Find Sample"); } }
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