private void ExecuteButton_Click(object sender, RoutedEventArgs e)
{
GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
graphicsLayer.ClearGraphics();
FindTask findTask = new FindTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer");
findTask.Failed += FindTask_Failed;
FindParameters findParameters = new FindParameters();
// Layer ids to search
findParameters.LayerIds.AddRange(new int[] { 0, 1, 2 });
// Fields in layers to search
findParameters.SearchFields.AddRange(new string[] { "CITY_NAME", "NAME", "SYSTEM", "STATE_ABBR", "STATE_NAME" });
// Return features in map's spatial reference
findParameters.SpatialReference = MyMap.SpatialReference;
// Bind data grid to find results. Bind to the LastResult property which returns a list
// of FindResult instances. When LastResult is updated, the ItemsSource property on the
// will update.
Binding resultFeaturesBinding = new Binding("LastResult");
resultFeaturesBinding.Source = findTask;
FindDetailsDataGrid.SetBinding(DataGrid.ItemsSourceProperty, resultFeaturesBinding);
findParameters.SearchText = FindText.Text;
findTask.ExecuteAsync(findParameters);
// Since binding to DataGrid, handling the ExecuteComplete event is not necessary.
}
protected void CreateCriteriaFromFindParameters(ActiveRecordDataSourceFindEventArgs args)
{
IOrderedDictionary values = FindParameters.GetValues(HttpContext.Current, Source);
for (int i = 0; i < FindParameters.Count; i++)
{
Parameter parameter = FindParameters[i];
if (parameter is NullParameter)
{
NullParameter nullParameter = (NullParameter)parameter;
if (nullParameter.Expression == NullExpression.IsNull)
{
args.Criteria.Add(Expression.IsNull(parameter.Name));
}
else if (nullParameter.Expression == NullExpression.IsNotNull)
{
args.Criteria.Add(Expression.IsNotNull(parameter.Name));
}
}
else
{
args.Criteria.Add(Expression.Eq(parameter.Name, values[i]));
}
}
}
/// <summary>
/// Searches asynchronously for places matching the specified text.
/// </summary>
public Task<List<Graphic>> FindAsync(string searchText)
{
FindParameters findParams = new FindParameters();
findParams.LayerIds.AddRange(new int[] { 0 }); // cities layer
findParams.SearchFields.AddRange(new string[] { "CITY_NAME" });
findParams.SpatialReference = new SpatialReference(4326);
findParams.SearchText = searchText;
FindTask findTask = new FindTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer");
var tcs = new TaskCompletionSource<List<Graphic>>();
findTask.ExecuteCompleted += (sender, e) =>
{
List<Graphic> graphics = new List<Graphic>();
foreach (var result in e.FindResults)
graphics.Add(result.Feature);
tcs.TrySetResult(graphics);
};
findTask.Failed += (sender, e) =>
{
tcs.TrySetResult(new List<Graphic>());
};
findTask.ExecuteAsync(findParams);
return tcs.Task;
}
/// <summary>
/// Searches asynchronously for places matching the specified text.
/// </summary>
public Task <List <Graphic> > FindAsync(string searchText)
{
FindParameters findParams = new FindParameters();
findParams.LayerIds.AddRange(new int[] { 0 }); // cities layer
findParams.SearchFields.AddRange(new string[] { "CITY_NAME" });
findParams.SpatialReference = new SpatialReference(4326);
findParams.SearchText = searchText;
FindTask findTask = new FindTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer");
var tcs = new TaskCompletionSource <List <Graphic> >();
findTask.ExecuteCompleted += (sender, e) =>
{
List <Graphic> graphics = new List <Graphic>();
foreach (var result in e.FindResults)
{
graphics.Add(result.Feature);
}
tcs.TrySetResult(graphics);
};
findTask.Failed += (sender, e) =>
{
tcs.TrySetResult(new List <Graphic>());
};
findTask.ExecuteAsync(findParams);
return(tcs.Task);
}
private void ExecuteButton_Click(object sender, RoutedEventArgs e)
{
GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
graphicsLayer.Graphics.Clear();
FindTask findTask = new FindTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer");
findTask.Failed += FindTask_Failed;
FindParameters findParameters = new FindParameters();
// Layer ids to search
findParameters.LayerIds.AddRange(new int[] { 0,1,2 });
// Fields in layers to search
findParameters.SearchFields.AddRange(new string[] { "CITY_NAME", "NAME", "SYSTEM", "STATE_ABBR", "STATE_NAME" });
// Return features in map's spatial reference
findParameters.SpatialReference = MyMap.SpatialReference;
// Bind data grid to find results. Bind to the LastResult property which returns a list
// of FindResult instances. When LastResult is updated, the ItemsSource property on the
// will update.
Binding resultFeaturesBinding = new Binding("LastResult");
resultFeaturesBinding.Source = findTask;
FindDetailsDataGrid.SetBinding(DataGrid.ItemsSourceProperty, resultFeaturesBinding);
findParameters.SearchText = FindText.Text;
findTask.ExecuteAsync(findParameters);
// Since binding to DataGrid, handling the ExecuteComplete event is not necessary.
}
public async void Execute(object parameter)
{
var url = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer";
var findTask = new FindTask(new Uri(url));
var findParameters = new FindParameters();
findParameters.LayerIDs.Add(0); // Cities
findParameters.LayerIDs.Add(3); // Counties
findParameters.LayerIDs.Add(2); // States
findParameters.SearchFields.Add("name");
findParameters.SearchFields.Add("areaname");
findParameters.SearchFields.Add("state_name");
findParameters.ReturnGeometry = true;
//findParameters.SpatialReference = MyMapView.SpatialReference;
findParameters.SearchText = (string)parameter;
findParameters.Contains = true;
FindResult findResult = await
findTask.ExecuteAsync(findParameters);
var foundCities = 0;
var foundCounties = 0;
var foundStates = 0;
// Loop thru results; count the matches found in each layer
foreach (FindItem findItem in findResult.Results)
{
switch (findItem.LayerID)
{
case 0: // Cities
foundCities++;
break;
case 3: // Counties
foundCounties++;
break;
case 2: // States
foundStates++;
break;
}
}
// Report the number of matches for each layer
var msg = string.Format("Found {0} cities, {1} counties, and {2} states containing '" + (string)parameter +
"' in a Name attribute", foundCities, foundCounties,
foundStates);
MessageBox.Show(msg);
vm.SearchResults = findResult.Results;
// Bind the results to a DataGrid control on the page
// MyDataGrid.ItemsSource = findResult.Results;
}
private async void Button_Click(object sender, RoutedEventArgs e)
{
var url = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer";
var findTask = new FindTask(new Uri(url));
var findParameters = new FindParameters();
findParameters.LayerIDs.Add(0); // Cities
findParameters.LayerIDs.Add(3); // Counties
findParameters.LayerIDs.Add(2); // States
findParameters.SearchFields.Add("name");
findParameters.SearchFields.Add("areaname");
findParameters.SearchFields.Add("state_name");
findParameters.ReturnGeometry = true;
findParameters.SpatialReference = MyMapView.SpatialReference;
findParameters.SearchText = SearchTextBox.Text;
findParameters.Contains = true;
FindResult findResult = await
findTask.ExecuteAsync(findParameters);
var foundCities = 0;
var foundCounties = 0;
var foundStates = 0;
// Loop thru results; count the matches found in each layer
foreach (FindItem findItem in findResult.Results)
{
switch (findItem.LayerID)
{
case 0: // Cities
foundCities++;
break;
case 3: // Counties
foundCounties++;
break;
case 2: // States
foundStates++;
break;
}
}
// Report the number of matches for each layer
var msg = string.Format("Found {0} cities, {1} counties, and {2} states containing '" + SearchTextBox.Text +
"' in a Name attribute", foundCities, foundCounties,
foundStates);
MessageBox.Show(msg);
// Bind the results to a DataGrid control on the page
MyDataGrid.ItemsSource = findResult.Results;
}
protected Dictionary <string, object> CreateMethodParametersFromFindParameters()
{
Dictionary <string, object> methodParameters = new Dictionary <string, object>();
IOrderedDictionary values = FindParameters.GetValues(HttpContext.Current, Source);
for (int i = 0; i < FindParameters.Count; i++)
{
Parameter parameter = FindParameters[i];
methodParameters[parameter.Name] = values[i];
}
return(methodParameters);
}
static void Main(string[] args)
{
PrintArgs(args);
if (args.Length < 1)
{
PrintUsage();
Environment.Exit(0);
}
try
{
new Finder(FindParameters.Parse(args)).Find();
}
catch (FindException e)
{
PrintError(e);
}
}
public Task <FindResult> DoFind(string serviceId, Geometry geometry, string fields, string value)
{
LayerObject lo = null;
foreach (var t in ConfigUtil.DynamicLayer)
{
if (serviceId != t.Id)
{
continue;
}
lo = t;
}
if (lo == null)
{
return(null);
}
var findTask = new FindTask(lo.Uri);
if (lo.Token != null)
{
findTask.Token = lo.Token;
}
//初始化FindParameters参数
FindParameters findParameters = new FindParameters();
string[] Layers = lo.Layers.Split('、');
if (Layers != null && Layers.Length > 0)
{
foreach (var item in Layers)
{
var layerId = lo.GetLayerId(item);
if (layerId != null)
{
findParameters.LayerIDs.Add(Convert.ToInt16(layerId)); //查找的图层
}
}
}
findParameters.SearchFields.Add(fields); //查找的字段范围
findParameters.ReturnGeometry = true;
findParameters.Contains = false;
findParameters.SearchText = value; //查找的“属性值”
//异步执行
return(findTask.ExecuteAsync(findParameters));
}
// Find map service items with entered information in given fields
private async void FindButton_Click(object sender, RoutedEventArgs e)
{
try
{
progress.Visibility = Visibility.Visible;
resultsGrid.Visibility = Visibility.Collapsed;
resultsGrid.ItemsSource = null;
_graphicsOverlay.Graphics.Clear();
FindTask findTask = new FindTask(
new Uri("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer"));
var param = new FindParameters()
{
LayerIDs = new List <int> {
0, 1, 2
},
SearchFields = new List <string> {
"CITY_NAME", "NAME", "SYSTEM", "STATE_ABBR", "STATE_NAME"
},
ReturnGeometry = true,
SpatialReference = MyMapView.SpatialReference,
SearchText = txtFind.Text
};
var findResults = await findTask.ExecuteAsync(param);
if (findResults != null && findResults.Results.Count > 0)
{
resultsGrid.ItemsSource = findResults.Results;
resultsGrid.Visibility = Visibility.Visible;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Find Sample");
}
finally
{
progress.Visibility = Visibility.Collapsed;
}
}
// Find map service items with entered information in given fields
private async void FindButton_Click(object sender, RoutedEventArgs e)
{
try
{
progress.Visibility = Visibility.Visible;
resultsGrid.Visibility = Visibility.Collapsed;
resultsGrid.ItemsSource = null;
_graphicsLayer.Graphics.Clear();
FindTask findTask = new FindTask(
new Uri("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer"));
var param = new FindParameters()
{
LayerIDs = new int[] { 0, 1, 2 },
SearchFields = new string[] { "CITY_NAME", "NAME", "SYSTEM", "STATE_ABBR", "STATE_NAME" },
ReturnGeometry = true,
SpatialReference = mapView.SpatialReference,
SearchText = txtFind.Text
};
var findResults = await findTask.ExecuteAsync(param);
if (findResults != null && findResults.Results.Count > 0)
{
resultsGrid.ItemsSource = findResults.Results;
resultsGrid.Visibility = Visibility.Visible;
}
}
catch (Exception ex)
{
var _ = new MessageDialog(ex.Message, "Sample Error").ShowAsync();
}
finally
{
progress.Visibility = Visibility.Collapsed;
}
}
public async void Search(int wkid)
{
var findTask = new FindTask(new System.Uri(this.USAUri));
var findParameters = new FindParameters();
findParameters.LayerIDs.Add(0); // Cities
findParameters.LayerIDs.Add(3); // Counties
findParameters.LayerIDs.Add(2); // States
findParameters.SearchFields.Add("name");
findParameters.SearchFields.Add("areaname");
findParameters.SearchFields.Add("state_name");
findParameters.ReturnGeometry = true;
SpatialReference sr = new SpatialReference(wkid);
findParameters.SpatialReference = sr;
findParameters.SearchText = this.SearchText;
findParameters.Contains = true;
FindResult findResult = await
findTask.ExecuteAsync(findParameters);
var foundCities = 0;
var foundCounties = 0;
var foundStates = 0;
// Loop thru results; count the matches found in each layer
foreach (FindItem findItem in findResult.Results)
{
switch (findItem.LayerID)
{
case 0: // Cities
foundCities++;
break;
case 3: // Counties
foundCounties++;
break;
case 2: // States
foundStates++;
break;
}
}
// Report the number of matches for each layer
var msg = string.Format("Found {0} cities, {1} counties, and {2} states containing '" + this.SearchText +
"' in a Name attribute", foundCities, foundCounties,
foundStates);
// Bind the results to a DataGrid control on the page
IReadOnlyList<FindItem> temp = findResult.Results;
ObservableCollection<FindItem> obsCollection = new ObservableCollection<FindItem>();
foreach (FindItem item in temp)
{
obsCollection.Add(item);
}
this.GridDataResults = obsCollection;
// show message
Messenger.Default.Send<NotificationMessage>(new NotificationMessage(msg));
}
public async void Search(int wkid)
{
var findTask = new FindTask(new System.Uri(this.USAUri));
var findParameters = new FindParameters();
findParameters.LayerIDs.Add(0); // Cities
findParameters.LayerIDs.Add(3); // Counties
findParameters.LayerIDs.Add(2); // States
findParameters.SearchFields.Add("name");
findParameters.SearchFields.Add("areaname");
findParameters.SearchFields.Add("state_name");
findParameters.ReturnGeometry = true;
SpatialReference sr = new SpatialReference(wkid);
findParameters.SpatialReference = sr;
findParameters.SearchText = this.SearchText;
findParameters.Contains = true;
FindResult findResult = await
findTask.ExecuteAsync(findParameters);
var foundCities = 0;
var foundCounties = 0;
var foundStates = 0;
// Loop thru results; count the matches found in each layer
foreach (FindItem findItem in findResult.Results)
{
switch (findItem.LayerID)
{
case 0: // Cities
foundCities++;
break;
case 3: // Counties
foundCounties++;
break;
case 2: // States
foundStates++;
break;
}
}
// Report the number of matches for each layer
var msg = string.Format("Found {0} cities, {1} counties, and {2} states containing '" + this.SearchText +
"' in a Name attribute", foundCities, foundCounties,
foundStates);
// Bind the results to a DataGrid control on the page
IReadOnlyList <FindItem> temp = findResult.Results;
ObservableCollection <FindItem> obsCollection = new ObservableCollection <FindItem>();
foreach (FindItem item in temp)
{
obsCollection.Add(item);
}
this.GridDataResults = obsCollection;
// show message
Messenger.Default.Send <NotificationMessage>(new NotificationMessage(msg));
}
public Finder(FindParameters parameters)
{
_parameters = parameters;
_regex = new Regex(_parameters.Pattern);
}
public async void Search(int wkid)
{
var url = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer";
var findTask = new FindTask(new System.Uri(url));
var findParameters = new FindParameters();
findParameters.LayerIDs.Add(0); // Cities
findParameters.LayerIDs.Add(3); // Counties
findParameters.LayerIDs.Add(2); // States
findParameters.SearchFields.Add("name");
findParameters.SearchFields.Add("areaname");
findParameters.SearchFields.Add("state_name");
findParameters.ReturnGeometry = true;
SpatialReference sr = new SpatialReference(wkid);
findParameters.SpatialReference = sr;
findParameters.SearchText = this.SearchText;
findParameters.Contains = true;
FindResult findResult = await
findTask.ExecuteAsync(findParameters);
var foundCities = 0;
var foundCounties = 0;
var foundStates = 0;
// Loop thru results; count the matches found in each layer
foreach (FindItem findItem in findResult.Results)
{
switch (findItem.LayerID)
{
case 0: // Cities
foundCities++;
break;
case 3: // Counties
foundCounties++;
break;
case 2: // States
foundStates++;
break;
}
}
// Report the number of matches for each layer
var msg = string.Format("Found {0} cities, {1} counties, and {2} states containing '" + this.SearchText +
"' in a Name attribute", foundCities, foundCounties,
foundStates);
// Bind the results to a DataGrid control on the page
IReadOnlyList <FindItem> temp = findResult.Results;
ObservableCollection <FindItem> obsCollection = new ObservableCollection <FindItem>();
foreach (FindItem item in temp)
{
obsCollection.Add(item);
}
this.GridDataResults = obsCollection;
System.Diagnostics.Debug.WriteLine(msg);
}
public async void Search(int wkid)
{
var url = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer";
var findTask = new FindTask(new System.Uri(url));
var findParameters = new FindParameters();
findParameters.LayerIDs.Add(0); // Cities
findParameters.LayerIDs.Add(3); // Counties
findParameters.LayerIDs.Add(2); // States
findParameters.SearchFields.Add("name");
findParameters.SearchFields.Add("areaname");
findParameters.SearchFields.Add("state_name");
findParameters.ReturnGeometry = true;
SpatialReference sr = new SpatialReference(wkid);
findParameters.SpatialReference = sr;
findParameters.SearchText = this.SearchText;
findParameters.Contains = true;
FindResult findResult = await
findTask.ExecuteAsync(findParameters);
var foundCities = 0;
var foundCounties = 0;
var foundStates = 0;
// Loop thru results; count the matches found in each layer
foreach (FindItem findItem in findResult.Results)
{
switch (findItem.LayerID)
{
case 0: // Cities
foundCities++;
break;
case 3: // Counties
foundCounties++;
break;
case 2: // States
foundStates++;
break;
}
}
// Report the number of matches for each layer
var msg = string.Format("Found {0} cities, {1} counties, and {2} states containing '" + this.SearchText +
"' in a Name attribute", foundCities, foundCounties,
foundStates);
// Bind the results to a DataGrid control on the page
IReadOnlyList<FindItem> temp = findResult.Results;
ObservableCollection<FindItem> obsCollection = new ObservableCollection<FindItem>();
foreach (FindItem item in temp)
{
obsCollection.Add(item);
}
this.GridDataResults = obsCollection;
System.Diagnostics.Debug.WriteLine(msg);
}
public FindRequest()
{
State = new FindParameters();
}
