List geodatabase versions

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 // Copyright 2016 Esri. // // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. // You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific // language governing permissions and limitations under the License.  using Esri.ArcGISRuntime.Data; using Esri.ArcGISRuntime.Tasks; using Esri.ArcGISRuntime.Tasks.Geoprocessing; using System; using System.Collections.Generic; using System.Text; using System.Threading.Tasks; using System.Windows;  namespace ArcGIS.WPF.Samples.ListGeodatabaseVersions {  [ArcGIS.Samples.Shared.Attributes.Sample(  name: "List geodatabase versions",  category: "Geoprocessing",  description: "Connect to a service and list versions of the geodatabase.",  instructions: "When the sample loads, a list of geodatabase versions and their properties will be displayed.",  tags: new[] { "conflict resolution", "data management", "database", "multi-user", "sync", "version" })]  public partial class ListGeodatabaseVersions  {  // Url to used geoprocessing service  private const string ListVersionsUrl =  "https://sampleserver6.arcgisonline.com/arcgis/rest/services/GDBVersions/GPServer/ListVersions";   public ListGeodatabaseVersions()  {  InitializeComponent();   // Create the UI, setup the control references and execute initialization  _ = Initialize();  }   private async Task Initialize()  {  // Set the UI to indicate that the geoprocessing is running  SetBusy(true);   try  {  // Get versions from a geodatabase  IFeatureSet versionsFeatureSet = await GetGeodatabaseVersionsAsync();   // Continue if we got a valid geoprocessing result  if (versionsFeatureSet != null)  {  // Create a string builder to hold all of the information from the geoprocessing  // task to display in the UI  StringBuilder myStringBuilder = new StringBuilder();   // Loop through each Feature in the FeatureSet  foreach (Feature version in versionsFeatureSet)  {  // Get the attributes (a dictionary of <key,value> pairs) from the Feature  IDictionary<string, object> myDictionary = version.Attributes;   // Loop through each attribute (a <key,value> pair)  foreach (KeyValuePair<string, object> attribute in myDictionary)  {  // Add the key and value strings to the string builder  myStringBuilder.AppendLine(attribute.Key + ": " + attribute.Value);  }   // Add a blank line after each Feature (the listing of geodatabase versions)  myStringBuilder.AppendLine();  }   // Display the result in the textbox  ResultView.Text = myStringBuilder.ToString();  }  }  catch (Exception e)  {  MessageBox.Show(e.ToString(), "Error");  }   // Set the UI to indicate that the geoprocessing is not running  SetBusy(false);  }   private async Task<IFeatureSet> GetGeodatabaseVersionsAsync()  {  // Results will be returned as a feature set  IFeatureSet results = null;   // Create new geoprocessing task  GeoprocessingTask listVersionsTask = await GeoprocessingTask.CreateAsync(new Uri(ListVersionsUrl));   // Create default parameters that are passed to the geoprocessing task  GeoprocessingParameters listVersionsParameters = await listVersionsTask.CreateDefaultParametersAsync();   // Create job that handles the communication between the application and the geoprocessing task  GeoprocessingJob listVersionsJob = listVersionsTask.CreateJob(listVersionsParameters);  try  {  // Execute analysis and wait for the results  GeoprocessingResult analysisResult = await listVersionsJob.GetResultAsync();   // Get results from the outputs  GeoprocessingFeatures listVersionsResults = (GeoprocessingFeatures)analysisResult.Outputs["Versions"];   // Set results  results = listVersionsResults.Features;  }  catch (Exception ex)  {  // Error handling if something goes wrong  if (listVersionsJob.Status == JobStatus.Failed && listVersionsJob.Error != null)  MessageBox.Show("Executing geoprocessing failed. " + listVersionsJob.Error.Message, "Geoprocessing error");  else  MessageBox.Show("An error occurred. " + ex.ToString(), "Sample error");  }  finally  {  // Set the UI to indicate that the geoprocessing is not running  SetBusy(false);  }   return results;  }   private void SetBusy(bool isBusy = true)  {  if (isBusy)  {  // Change UI to indicate that the geoprocessing is running  BusyOverlay.Visibility = Visibility.Visible;  Progress.IsIndeterminate = true;  }  else  {  // Change UI to indicate that the geoprocessing is not running  BusyOverlay.Visibility = Visibility.Collapsed;  Progress.IsIndeterminate = false;  }  }  } }