老师例子

时间：2015-01-16 07:36:51 阅读：289 评论：0 收藏：0 [点我收藏+]

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<Grid.RowDefinitions> <RowDefinition Height="*"/> <RowDefinition Height="75"/> <RowDefinition Height="75"/> <RowDefinition Height="75"/> <RowDefinition Height="75"/> <RowDefinition Height="*"/> </Grid.RowDefinitions>

后台代码

using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes;

namespace WebGIS { public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); }

private void Button_Click_1(object sender, RoutedEventArgs e) { this.Content = new MapPage(); }

private void Button_Click_2(object sender, RoutedEventArgs e) { RegistPage pRegist = new RegistPage(); pRegist.Show(); } } }

MAP页

<navigation:Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:navigation="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation" xmlns:esri="http://schemas.esri.com/arcgis/client/2009" x:Class="WebGIS.MapPage" xmlns:slData="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data" mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480" Title="MapPage Page"> <Grid x:Name="LayoutRoot" RenderTransformOrigin="0.495,0.144"> <Grid.Resources> <esri:SimpleFillSymbol x:Key="DefaultFillSymbol" Fill="#500000FF" BorderBrush="Blue" BorderThickness="1"/> <esri:SimpleMarkerSymbol x:Key="DefaultMarkerSymbol" Color="Red" Size="6" Style="Diamond"/> </Grid.Resources>

<Grid.RowDefinitions> <RowDefinition Height="150"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <Grid Grid.Row="0"> <Grid.Background> <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> <GradientStop Color="Black" Offset="0"/> <GradientStop Color="#FF2B21F0" Offset="1"/> </LinearGradientBrush> </Grid.Background> </Grid>

<esri:Map Name="MyMap" Background="White" WrapAround="True" Extent="-868436,-2480683,24033067,9385902" Grid.ColumnSpan="2" Margin="193,0,7,0"> <esri:ArcGISDynamicMapServiceLayer ID="MapLayer" Url="http://localhost/ArcGIS/rest/services/Map/MapServer"/>  <esri:GraphicsLayer ID="GraphicslayerQuery"/>  <esri:GraphicsLayer ID="GraphicslayerRender"/>  <esri:GraphicsLayer ID="StatesGraphicsLayerMapTip"> <esri:GraphicsLayer.MapTip> <Border esri:GraphicsLayer.MapTipHideDelay="00:00:01.5" CornerRadius="10" BorderBrush="#FF222957" BorderThickness="3" Margin="0,0,15,15">

<Border.Background> <LinearGradientBrush EndPoint="1.038,1.136" StartPoint="0.015,0.188"> <GradientStop Color="#FFD1DFF2"/> <GradientStop Color="#FF092959" Offset="0.946"/> </LinearGradientBrush> </Border.Background>

<Border.Effect> <DropShadowEffect ShadowDepth="10" BlurRadius="14" Direction="300"/> </Border.Effect>

<esri:Bookmark Name="mybookmap" Map="{Binding ElementName=MyMap}" Grid.Column="1" HorizontalAlignment="Left" Margin="5,45,0,0" VerticalAlignment="Top" Visibility="Collapsed"/> <esri:OverviewMap Name="myoverviewmap" Map="{Binding ElementName=MyMap}" Grid.Column="1" IsStatic="True" HorizontalAlignment="Right" Height="106" VerticalAlignment="Bottom" Visibility="Collapsed" Width="118" Opacity="0.6"> <esri:OverviewMap.Layer > <esri:ArcGISDynamicMapServiceLayer Url="http://localhost/ArcGIS/rest/services/Map/MapServer"/> </esri:OverviewMap.Layer > </esri:OverviewMap >

<Border x:Name="QueryBorder" Grid.Row="1" Grid.Column="1" Background="#77919191" BorderThickness="1" CornerRadius="5" HorizontalAlignment="Right" BorderBrush="Gray" VerticalAlignment="Top" Margin="5">

<Border.Effect> <DropShadowEffect/> </Border.Effect>

<Grid.RowDefinitions> <RowDefinition Height="30"/> <RowDefinition Height="30"/> <RowDefinition Height="*"/> </Grid.RowDefinitions>

<ComboBox x:Name="QueryComboBox" Grid.Row="1" MinWidth="150" Margin="5,1,5,5" SelectionChanged="QueryComboBox_SelectionChanged_2"> </ComboBox>

<StackPanel Orientation="Vertical" Grid.Row="1" Grid.Column="1" Margin="15" HorizontalAlignment="Left" VerticalAlignment="Top"> <Grid x:Name="LegendGrid" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="10,10,10,10" Visibility="Collapsed"> <Path x:Name="LegendCollapsedTriangle" Canvas.ZIndex="100" Height="10" HorizontalAlignment="Right" Margin="0,19,15.375,0" VerticalAlignment="Top" Width="10" Fill="#995C90B2" Stretch="Fill" Stroke="#FF666666" Data="M85,25 L85,25 L87.5,30 L90,25 z" RenderTransformOrigin="3.083,-1.417" Visibility="Collapsed" StrokeThickness="0"/> <Path x:Name="LegendExpandedTriangle" Canvas.ZIndex="100" Height="10" HorizontalAlignment="Right" Margin="0,16.931,15.294,0" VerticalAlignment="Top" Width="10" Stretch="Fill" Stroke="#FF666666" Data="M85,30 L85,30 L87.5,25 L90,30 z" RenderTransformOrigin="3.083,-1.417" Fill="#995C90B2" StrokeThickness="0"/> <Rectangle RadiusX="10" RadiusY="10" Fill="#22000000" Margin="0,4,0,0" /> <Rectangle Stroke="Gray" RadiusX="10" RadiusY="10" Fill="#77919191" Margin="0,0,0,5" /> <Rectangle Fill="#DDFFFFFF" Stroke="DarkGray" RadiusX="5" RadiusY="5" Margin="10,10,10,15" /> <TextBlock x:Name="LegendCollapsedTitle" TextAlignment="Center" Text="Legend" Margin="30.331,15.069,29.669,0" FontWeight="Bold" Height="16" VerticalAlignment="Top" RenderTransformOrigin="0.501,1.017" Visibility="Collapsed" /> <StackPanel Orientation="Vertical" Margin="25" HorizontalAlignment="Center" VerticalAlignment="Top" > <TextBlock x:Name="LegendTitle" HorizontalAlignment="Center" TextAlignment="Center" Text="Legend" Margin="5" FontWeight="Bold" /> <StackPanel x:Name="LegendStackPanel" HorizontalAlignment="Center" Margin="5" /> </StackPanel> </Grid> </StackPanel>

</Grid> </navigation:Page>

后台代码

sing System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; using System.Windows.Navigation; using ESRI.ArcGIS.Client; using ESRI.ArcGIS.Client.Symbols; using ESRI.ArcGIS.Client.Tasks;

namespace WebGIS { public partial class MapPage : Page { //地图渲染 List<ThematicItem> ThematicItemList = new List<ThematicItem>(); List<List<SolidColorBrush>> ColorList = new List<List<SolidColorBrush>>(); int _colorShadeIndex = 0; int _thematicListIndex = 0; FeatureSet _featureSet = null; int _classType = 0; // EqualInterval = 1; Quantile = 0; int _classCount = 6; int _lastGeneratedClassCount = 0; bool _legendGridCollapsed; bool _classGridCollapsed;

// 当用户导航到此页面时执行。 protected override void OnNavigatedTo(NavigationEventArgs e) {

}

public MapPage() { InitializeComponent();

//地图查询 QueryTask queryTask = new QueryTask("http://localhost/ArcGIS/rest/services/Map/MapServer/2"); queryTask.ExecuteCompleted += QueryTask_ExecuteCompleted; queryTask.Failed += QueryTask_Failed;

ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query();

// Specify fields to return from initial query query.OutFields.AddRange(new string[] { "Name" });

// This query will just populate the drop-down, so no need to return geometry query.ReturnGeometry = false;

// Return all features query.Where = "1=1"; queryTask.ExecuteAsync(query, "initial");

//MapTip //MyMap.PropertyChanged += MyMap_PropertyChanged; }

//基本工具，地图控件 private void btn_bookmap_Click_1(object sender, RoutedEventArgs e) { if (this.mybookmap.Visibility == Visibility.Collapsed) { this.mybookmap.Visibility = Visibility.Visible; } else { this.mybookmap.Visibility = Visibility.Collapsed; } }

private void btn_overviewmap_Click_1(object sender, RoutedEventArgs e) { if (this.myoverviewmap.Visibility == Visibility.Collapsed) { this.myoverviewmap.Visibility = Visibility.Visible; } else { this.myoverviewmap.Visibility = Visibility.Collapsed; } }

private void btn_query_Click_1(object sender, RoutedEventArgs e) { if (this.QueryGrid.Visibility == Visibility.Collapsed) { this.QueryGrid.Visibility = Visibility.Visible; } else { this.QueryGrid.Visibility = Visibility.Collapsed; } }

private void btn_render_Click_1(object sender, RoutedEventArgs e) { if (this.LegendGrid.Visibility == Visibility.Collapsed) { this.LegendGrid.Visibility = Visibility.Visible; } else { this.LegendGrid.Visibility = Visibility.Collapsed; }

if (this.ClassGrid.Visibility == Visibility.Collapsed) { this.ClassGrid.Visibility = Visibility.Visible;

//地图渲染开 //MyMap.PropertyChanged += MyMap_PropertyChanged; BeginMapRanderOpen(); } else { this.ClassGrid.Visibility = Visibility.Collapsed;

//地图渲染关 BeginMapRanderClose(); } }

private void btn_maptip_Click_1(object sender, RoutedEventArgs e) { if (this.MapTipGrid.Visibility == Visibility.Collapsed) { this.MapTipGrid.Visibility = Visibility.Visible;

//MapTip BeginMapTip(); } else { this.MapTipGrid.Visibility = Visibility.Collapsed; } } //地图查询事件 private void QueryComboBox_SelectionChanged_2(object sender, SelectionChangedEventArgs e) { if (QueryComboBox.SelectedItem.ToString().Contains("Select...")) return;

QueryTask queryTask = new QueryTask("http://localhost/ArcGIS/rest/services/Map/MapServer/2"); queryTask.ExecuteCompleted += QueryTask_ExecuteCompleted; queryTask.Failed += QueryTask_Failed;

ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query(); query.ReturnGeometry = true; query.Text = QueryComboBox.SelectedItem.ToString(); query.OutSpatialReference = MyMap.SpatialReference; query.OutFields.Add("*");

queryTask.ExecuteAsync(query); } private void QueryTask_ExecuteCompleted(object sender,ESRI.ArcGIS.Client.Tasks.QueryEventArgs args) {

FeatureSet featureSet = args.FeatureSet;

// If initial query to populate states combo box if ((args.UserState as string) == "initial") { // Just show on initial load QueryComboBox.Items.Add("Select...");

foreach (Graphic graphic in args.FeatureSet.Features) { QueryComboBox.Items.Add(graphic.Attributes["Name"].ToString()); }

QueryComboBox.SelectedIndex = 0; return; }

// Remove the first entry if "Select..." if (QueryComboBox.Items[0].ToString().Contains("Select...")) QueryComboBox.Items.RemoveAt(0);

// If an item has been selected GraphicsLayer graphicsLayerQuery = MyMap.Layers["graphicsLayerQuery"] as GraphicsLayer; if (graphicsLayerQuery != null) graphicsLayerQuery.ClearGraphics();

if (featureSet != null && featureSet.Features.Count > 0) { // Show selected feature attributes in DataGrid Graphic selectedFeature = featureSet.Features[0];

QueryDetailsDataGrid.ItemsSource = selectedFeature.Attributes;

// Highlight selected feature selectedFeature.Symbol = LayoutRoot.Resources["DefaultFillSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol; if (graphicsLayerQuery != null) graphicsLayerQuery.Graphics.Add(selectedFeature);

// Zoom to selected feature (define expand percentage) ESRI.ArcGIS.Client.Geometry.Envelope selectedFeatureExtent = selectedFeature.Geometry.Extent;

double expandPercentage = 30;

double widthExpand = selectedFeatureExtent.Width * (expandPercentage / 100); double heightExpand = selectedFeatureExtent.Height * (expandPercentage / 100);

ESRI.ArcGIS.Client.Geometry.Envelope displayExtent = new ESRI.ArcGIS.Client.Geometry.Envelope( selectedFeatureExtent.XMin - (widthExpand / 2), selectedFeatureExtent.YMin - (heightExpand / 2), selectedFeatureExtent.XMax + (widthExpand / 2), selectedFeatureExtent.YMax + (heightExpand / 2));

MyMap.ZoomTo(displayExtent);

// If DataGrid not visible (initial load), show it if (DataGridScrollViewer.Visibility == Visibility.Collapsed) { DataGridScrollViewer.Visibility = Visibility.Visible; QueryGrid.Height = Double.NaN; QueryGrid.UpdateLayout(); } } else { QueryDetailsDataGrid.ItemsSource = null; DataGridScrollViewer.Visibility = Visibility.Collapsed; QueryGrid.Height = Double.NaN; QueryGrid.UpdateLayout(); } }

private void QueryTask_Failed(object sender, TaskFailedEventArgs args) { MessageBox.Show("Query failed: " + args.Error); }

//地图查询生成类 public object featureSet { get; set; }

//地图渲染 void BeginMapRanderOpen() { _legendGridCollapsed = false; _classGridCollapsed = false;

LegendCollapsedTriangle.MouseLeftButtonUp += Triangle_MouseLeftButtonUp; LegendExpandedTriangle.MouseLeftButtonUp += Triangle_MouseLeftButtonUp; ClassCollapsedTriangle.MouseLeftButtonUp += Triangle_MouseLeftButtonUp; ClassExpandedTriangle.MouseLeftButtonUp += Triangle_MouseLeftButtonUp;

// Get start value for number of classifications in XAML. _lastGeneratedClassCount = Convert.ToInt32(((ComboBoxItem)ClassCountCombo.SelectedItem).Content);

// Set query where clause to include features with an area greater than 70 square miles. This // will effectively exclude the District of Columbia from attributes to avoid skewing classifications. ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query() { Where = "1=1", OutSpatialReference = MyMap.SpatialReference, ReturnGeometry = true }; query.OutFields.Add("*");

QueryTask queryTask = new QueryTask("http://localhost/ArcGIS/rest/services/Map/MapServer/2");

//queryTask.ExecuteCompleted += (evtsender, args) => //{ // if (args.FeatureSet == null) // return; // _featureSet = args.FeatureSet; // SetRangeValues(); // RenderButton.IsEnabled = true; //};

queryTask.ExecuteCompleted += queryTask_ExecuteCompleted; queryTask.Failed += queryTask_Failed; queryTask.ExecuteAsync(query);

CreateColorList(); CreateThematicList(); }

void BeginMapRanderClose() { _legendGridCollapsed = false; _classGridCollapsed = false;

// Get start value for number of classifications in XAML. _lastGeneratedClassCount = Convert.ToInt32(((ComboBoxItem)ClassCountCombo.SelectedItem).Content);

QueryTask queryTask = new QueryTask("http://localhost/ArcGIS/rest/services/Map/MapServer/2");

//queryTask.ExecuteCompleted += (evtsender, args) => //{ // if (args.FeatureSet == null) // return; // _featureSet = args.FeatureSet; // SetRangeValues(); // RenderButton.IsEnabled = true; //};

queryTask.ExecuteCompleted += queryTask_ExecuteCompleted; queryTask.Failed += queryTask_Failed; queryTask.ExecuteAsync(query);

CreateColorList(); CreateThematicList(); } //void MyMap_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs arge) //{ // if (arge.PropertyName == "SpatialReference") // { // MyMap.PropertyChanged -= MyMap_PropertyChanged;

// _legendGridCollapsed = false; // _classGridCollapsed = false;

// LegendCollapsedTriangle.MouseLeftButtonUp += Triangle_MouseLeftButtonUp; // LegendExpandedTriangle.MouseLeftButtonUp += Triangle_MouseLeftButtonUp; // ClassCollapsedTriangle.MouseLeftButtonUp += Triangle_MouseLeftButtonUp; // ClassExpandedTriangle.MouseLeftButtonUp += Triangle_MouseLeftButtonUp;

// // Get start value for number of classifications in XAML. // _lastGeneratedClassCount = Convert.ToInt32(((ComboBoxItem)ClassCountCombo.SelectedItem).Content);

// // Set query where clause to include features with an area greater than 70 square miles. This // // will effectively exclude the District of Columbia from attributes to avoid skewing classifications. // ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query() // { // Where = "1=1", // OutSpatialReference = MyMap.SpatialReference, // ReturnGeometry = true // }; // query.OutFields.Add("*");

// QueryTask queryTask = // new QueryTask("http://localhost/ArcGIS/rest/services/Map/MapServer/2");

// //queryTask.ExecuteCompleted += (evtsender, args) => // //{ // // if (args.FeatureSet == null) // // return; // // _featureSet = args.FeatureSet; // // SetRangeValues(); // // RenderButton.IsEnabled = true; // //};

// queryTask.ExecuteCompleted += queryTask_ExecuteCompleted; // queryTask.Failed += queryTask_Failed; // queryTask.ExecuteAsync(query);

// CreateColorList(); // CreateThematicList(); // } //}

void queryTask_Failed(object sender, TaskFailedEventArgs e) { MessageBox.Show(e.ToString()); }

void queryTask_ExecuteCompleted(object sender, QueryEventArgs e) { if (e.FeatureSet == null) return; _featureSet = e.FeatureSet; SetRangeValues(); RenderButton.IsEnabled = true; }

public struct ThematicItem { public string Name { get; set; } public string Description { get; set; } public string CalcField { get; set; } public double Min { get; set; } public double Max { get; set; } public string MinName { get; set; } public string MaxName { get; set; } public List<double> RangeStarts { get; set; }

}

private void CreateColorList() { ColorList = new List<List<SolidColorBrush>>();

List<SolidColorBrush> BlueShades = new List<SolidColorBrush>(); List<SolidColorBrush> RedShades = new List<SolidColorBrush>(); List<SolidColorBrush> GreenShades = new List<SolidColorBrush>(); List<SolidColorBrush> YellowShades = new List<SolidColorBrush>(); List<SolidColorBrush> MagentaShades = new List<SolidColorBrush>(); List<SolidColorBrush> CyanShades = new List<SolidColorBrush>();

int rgbFactor = 255 / _classCount;

for (int j = 0; j < 256; j = j + rgbFactor) { BlueShades.Add(new SolidColorBrush(Color.FromArgb(192, (byte)j, (byte)j, 255))); RedShades.Add(new SolidColorBrush(Color.FromArgb(192, 255, (byte)j, (byte)j))); GreenShades.Add(new SolidColorBrush(Color.FromArgb(192, (byte)j, 255, (byte)j))); YellowShades.Add(new SolidColorBrush(Color.FromArgb(192, 255, 255, (byte)j))); MagentaShades.Add(new SolidColorBrush(Color.FromArgb(192, 255, (byte)j, 255))); CyanShades.Add(new SolidColorBrush(Color.FromArgb(192, (byte)j, 255, 255))); }

ColorList.Add(BlueShades); ColorList.Add(RedShades); ColorList.Add(GreenShades); ColorList.Add(YellowShades); ColorList.Add(MagentaShades); ColorList.Add(CyanShades);

foreach (List<SolidColorBrush> brushList in ColorList) { brushList.Reverse(); }

List<SolidColorBrush> MixedShades = new List<SolidColorBrush>(); if (_classCount > 5) MixedShades.Add(new SolidColorBrush(Color.FromArgb(192, 0, 255, 255))); if (_classCount > 4) MixedShades.Add(new SolidColorBrush(Color.FromArgb(192, 255, 0, 255))); if (_classCount > 3) MixedShades.Add(new SolidColorBrush(Color.FromArgb(192, 255, 255, 0))); MixedShades.Add(new SolidColorBrush(Color.FromArgb(192, 0, 255, 0))); MixedShades.Add(new SolidColorBrush(Color.FromArgb(192, 0, 0, 255))); MixedShades.Add(new SolidColorBrush(Color.FromArgb(192, 255, 0, 0))); ColorList.Add(MixedShades);

_lastGeneratedClassCount = _classCount; }

private void CreateThematicList() { ThematicItemList.Add(new ThematicItem() { Name = "GDP", Description = "GDP", CalcField = "" }); ThematicItemList.Add(new ThematicItem() { Name = "Population", Description = "Population", CalcField = "" }); foreach (ThematicItem items in ThematicItemList) { FieldCombo.Items.Add(items.Description); } FieldCombo.SelectedIndex = 0; }

GraphicsLayer graphicsLayerRender;

private void SetRangeValues() { graphicsLayerRender = MyMap.Layers["GraphicslayerRender"] as GraphicsLayer;

if (graphicsLayerRender != null) { graphicsLayerRender.Graphics.Clear(); }

// if necessary, update ColorList based on current number of classes. if (_lastGeneratedClassCount != _classCount) CreateColorList();

// Field on which to generate a classification scheme. ThematicItem thematicItem = ThematicItemList[_thematicListIndex];

// Calculate value for classification scheme bool useCalculatedValue = !string.IsNullOrEmpty(thematicItem.CalcField);

// Store a list of values to classify List<double> valueList = new List<double>();

// Get range, min, max, etc. from features for (int i = 0; i < _featureSet.Features.Count; i++) { Graphic graphicFeature = _featureSet.Features[i];

double graphicValue = Convert.ToDouble(graphicFeature.Attributes[thematicItem.Name]); string graphicName = graphicFeature.Attributes["Name"].ToString();

if (useCalculatedValue) { double calcVal = Convert.ToDouble(graphicFeature.Attributes[thematicItem.CalcField]); graphicValue = Math.Round(graphicValue / calcVal * 100, 2); }

if (i == 0) { thematicItem.Min = graphicValue; thematicItem.Max = graphicValue; thematicItem.MinName = graphicName; thematicItem.MaxName = graphicName; } else { if (graphicValue < thematicItem.Min) { thematicItem.Min = graphicValue; thematicItem.MinName = graphicName; } if (graphicValue > thematicItem.Max) { thematicItem.Max = graphicValue; thematicItem.MaxName = graphicName; } }

valueList.Add(graphicValue); }

// Set up range start values thematicItem.RangeStarts = new List<double>();

double totalRange = thematicItem.Max - thematicItem.Min; double portion = totalRange / _classCount;

thematicItem.RangeStarts.Add(thematicItem.Min); double startRangeValue = thematicItem.Min;

// Equal Interval if (_classType == 1) { for (int i = 1; i < _classCount; i++) { startRangeValue += portion; thematicItem.RangeStarts.Add(startRangeValue); } } // Quantile else { // Enumerator of all values in ascending order IEnumerable<double> valueEnumerator = from aValue in valueList orderby aValue //"ascending" is default select aValue;

int increment = Convert.ToInt32(Math.Ceiling(_featureSet.Features.Count / _classCount)); for (int i = increment; i < valueList.Count; i += increment) { double value = valueEnumerator.ElementAt(i); thematicItem.RangeStarts.Add(value); } }

// Create graphic features and set symbol using the class range which contains the value List<SolidColorBrush> brushList = ColorList[_colorShadeIndex]; if (_featureSet != null && _featureSet.Features.Count > 0) { // Clear previous graphic features if (graphicsLayerRender != null) graphicsLayerRender.ClearGraphics();

for (int i = 0; i < _featureSet.Features.Count; i++) { Graphic graphicFeature = _featureSet.Features[i];

double graphicValue = Convert.ToDouble(graphicFeature.Attributes[thematicItem.Name]); if (useCalculatedValue) { double calcVal = Convert.ToDouble(graphicFeature.Attributes[thematicItem.CalcField]); graphicValue = Math.Round(graphicValue / calcVal * 100, 2); }

int brushIndex = GetRangeIndex(graphicValue, thematicItem.RangeStarts);

SimpleFillSymbol symbol = new SimpleFillSymbol() { Fill = brushList[brushIndex], BorderBrush = new SolidColorBrush(Colors.Transparent), BorderThickness = 1 };

Graphic graphic = new Graphic(); graphic.Geometry = graphicFeature.Geometry; graphic.Attributes.Add("Name", graphicFeature.Attributes["Name"].ToString()); graphic.Attributes.Add("Description", thematicItem.Description); graphic.Attributes.Add("Value", graphicValue.ToString()); graphic.Symbol = symbol;

if (graphicsLayerRender != null) graphicsLayerRender.Graphics.Add(graphic); }

// Create new legend with ranges and swatches. LegendStackPanel.Children.Clear();

ListBox legendList = new ListBox(); LegendTitle.Text = thematicItem.Description;

for (int c = 0; c < _classCount; c++) { Rectangle swatchRect = new Rectangle() { Width = 20, Height = 20, Stroke = new SolidColorBrush(Colors.Black), Fill = brushList[c] };

TextBlock classTextBlock = new TextBlock();

// First classification if (c == 0) classTextBlock.Text = String.Format(" Less than {0}", Math.Round(thematicItem.RangeStarts[1], 2)); // Last classification else if (c == _classCount - 1) classTextBlock.Text = String.Format(" {0} and above", Math.Round(thematicItem.RangeStarts[c], 2)); // Middle classifications else classTextBlock.Text = String.Format(" {0} to {1}", Math.Round(thematicItem.RangeStarts[c], 2), Math.Round(thematicItem.RangeStarts[c + 1], 2));

StackPanel classStackPanel = new StackPanel(); classStackPanel.Orientation = Orientation.Horizontal; classStackPanel.Children.Add(swatchRect); classStackPanel.Children.Add(classTextBlock);

legendList.Items.Add(classStackPanel); }

TextBlock minTextBlock = new TextBlock(); StackPanel minStackPanel = new StackPanel(); minStackPanel.Orientation = Orientation.Horizontal; minTextBlock.Text = String.Format("Min: {0} ({1})", thematicItem.Min, thematicItem.MinName); minStackPanel.Children.Add(minTextBlock); legendList.Items.Add(minStackPanel);

TextBlock maxTextBlock = new TextBlock(); StackPanel maxStackPanel = new StackPanel(); maxStackPanel.Orientation = Orientation.Horizontal; maxTextBlock.Text = String.Format("Max: {0} ({1})", thematicItem.Max, thematicItem.MaxName); maxStackPanel.Children.Add(maxTextBlock); legendList.Items.Add(maxStackPanel);

LegendStackPanel.Children.Add(legendList); } }

private int GetRangeIndex(double val, List<double> ranges) { int index = _classCount - 1; for (int r = 0; r < _classCount - 1; r++) { if (val >= ranges[r] && val < ranges[r + 1]) index = r; } return index; }

public struct Values { public string Name { get; set; } public string Description { get; set; } public string Value { get; set; } }

//地图渲染事件 private void FieldCombo_SelectionChanged_1(object sender, SelectionChangedEventArgs e) { if (FieldCombo != null) _thematicListIndex = FieldCombo.SelectedIndex; }

private void ColorBlendCombo_SelectionChanged_1(object sender, SelectionChangedEventArgs e) { if (ColorBlendCombo != null) _colorShadeIndex = ColorBlendCombo.SelectedIndex; }

private void RenderButton_Click_1(object sender, RoutedEventArgs e) { SetRangeValues(); }

private void ClassCountCombo_SelectionChanged_1(object sender, SelectionChangedEventArgs e) { if (ClassCountCombo != null) { ComboBoxItem item = ClassCountCombo.SelectedItem as ComboBoxItem; _classCount = Convert.ToInt32(item.Content); } } private void ClassTypeCombo_SelectionChanged_1(object sender, SelectionChangedEventArgs e) { if (ClassTypeCombo != null) _classType = ClassTypeCombo.SelectedIndex; } //地图渲染生成类 void Triangle_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) { FrameworkElement source = sender as FrameworkElement;

switch (source.Name) { case "ClassExpandedTriangle": case "ClassCollapsedTriangle": if (_classGridCollapsed) { ClassExpandedTriangle.Visibility = Visibility.Visible; ClassCollapsedTriangle.Visibility = Visibility.Collapsed; ClassCollapsedTitle.Visibility = Visibility.Collapsed; ClassGrid.Height = Double.NaN; ClassGrid.UpdateLayout(); } else { ClassCollapsedTriangle.Visibility = Visibility.Visible; ClassExpandedTriangle.Visibility = Visibility.Collapsed; ClassCollapsedTitle.Visibility = Visibility.Visible; ClassGrid.Height = 50; } _classGridCollapsed = !_classGridCollapsed; break; case "LegendExpandedTriangle": case "LegendCollapsedTriangle": if (_legendGridCollapsed) { LegendExpandedTriangle.Visibility = Visibility.Visible; LegendCollapsedTriangle.Visibility = Visibility.Collapsed; LegendCollapsedTitle.Visibility = Visibility.Collapsed; LegendGrid.Height = Double.NaN; LegendGrid.UpdateLayout(); } else { LegendCollapsedTriangle.Visibility = Visibility.Visible; LegendExpandedTriangle.Visibility = Visibility.Collapsed; LegendCollapsedTitle.Visibility = Visibility.Visible; LegendGrid.Height = 50; } _legendGridCollapsed = !_legendGridCollapsed; break; } } //MapTip

private void BeginMapTip() { StatesGraphicsLayerLoad(); CitiesGraphicsLayerLoad(); }

//void MyMap_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs args) //{ // if (args.PropertyName == "SpatialReference") // { // StatesGraphicsLayerLoad(); // CitiesGraphicsLayerLoad(); // MyMap.PropertyChanged -= MyMap_PropertyChanged; // } //}

void StatesGraphicsLayerLoad() { ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query() { ReturnGeometry = true, OutSpatialReference = MyMap.SpatialReference }; query.Where = "1=1"; query.OutFields.Add("*");

QueryTask queryTask = new QueryTask("http://localhost/ArcGIS/rest/services/Map/MapServer/2"); queryTask.ExecuteCompleted += StatesGraphicsLayerQueryTask_ExecuteCompleted; queryTask.Failed += StatesqueryTask_Failed; queryTask.ExecuteAsync(query); }

private void StatesqueryTask_Failed(object sender, TaskFailedEventArgs e) { string result = e.ToString(); }

void StatesGraphicsLayerQueryTask_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs queryArgs) { if (queryArgs.FeatureSet == null) return;

FeatureSet resultFeatureSet = queryArgs.FeatureSet; ESRI.ArcGIS.Client.GraphicsLayer graphicsLayer = MyMap.Layers["StatesGraphicsLayerMapTip"] as ESRI.ArcGIS.Client.GraphicsLayer;

if (resultFeatureSet != null && resultFeatureSet.Features.Count > 0) { foreach (ESRI.ArcGIS.Client.Graphic graphicFeature in resultFeatureSet.Features) { graphicFeature.Symbol = LayoutRoot.Resources["DefaultFillSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol; graphicsLayer.Graphics.Add(graphicFeature); } } }

void CitiesGraphicsLayerLoad() { ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query() { ReturnGeometry = true, OutSpatialReference = MyMap.SpatialReference }; query.Where = "1=1"; query.OutFields.Add("*");

QueryTask queryTask = new QueryTask("http://localhost/ArcGIS/rest/services/Map/MapServer/0"); queryTask.ExecuteCompleted += CitiesGraphicsLayerQueryTask_ExecuteCompleted; queryTask.Failed += CitisequeryTask_Failed; queryTask.ExecuteAsync(query); }

private void CitisequeryTask_Failed(object sender, TaskFailedEventArgs e) { string result = e.ToString(); }

void CitiesGraphicsLayerQueryTask_ExecuteCompleted(object sender, QueryEventArgs queryArgs) { if (queryArgs.FeatureSet == null) return;

FeatureSet resultFeatureSet = queryArgs.FeatureSet; ESRI.ArcGIS.Client.GraphicsLayer graphicsLayer = MyMap.Layers["CitiesGraphicsLayerMapTip"] as ESRI.ArcGIS.Client.GraphicsLayer;

if (resultFeatureSet != null && resultFeatureSet.Features.Count > 0) { foreach (ESRI.ArcGIS.Client.Graphic graphicFeature in resultFeatureSet.Features) { graphicFeature.Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol; graphicsLayer.Graphics.Add(graphicFeature); } } }

} }

注册页

<controls:ChildWindow x:Class="WebGIS.RegistPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls" Width="400" Height="300" Title="RegistPage"> <Grid x:Name="LayoutRoot" Margin="2"> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition Height="75"/> <RowDefinition Height="75"/> <RowDefinition Height="75"/> <RowDefinition Height="35"/> <RowDefinition Height="Auto" /> </Grid.RowDefinitions>

<Grid.ColumnDefinitions> <ColumnDefinition Width="*"/> <ColumnDefinition Width="140"/> <ColumnDefinition Width="240"/> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <TextBlock Text="用户名" FontSize="20" Grid.Column="1" Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center"/> <TextBlock Text="密码" FontSize="20" Grid.Column="1" Grid.Row="2" HorizontalAlignment="Center" VerticalAlignment="Center"/> <TextBlock Text="确认密码" FontSize="20" Grid.Column="1" Grid.Row="3" HorizontalAlignment="Center" VerticalAlignment="Center"/> <TextBox FontSize="20" Grid.Column="2" Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center" Width="100" Height="40"/> <TextBox FontSize="20" Grid.Column="2" Grid.Row="2" HorizontalAlignment="Center" VerticalAlignment="Center" Width="100" Height="40"/> <TextBox FontSize="20" Grid.Column="2" Grid.Row="3" HorizontalAlignment="Center" VerticalAlignment="Center" Width="100" Height="40"/> <StackPanel Grid.Column="2" Grid.Row="4" Orientation="Horizontal" HorizontalAlignment="Center"> <Button x:Name="OKButton" Content="确定" Click="OKButton_Click" Width="75" Height="23" HorizontalAlignment="Right" Margin="0,12,79,0" /> <Button x:Name="CancelButton" Content="取消" Click="CancelButton_Click" Width="75" Height="23" HorizontalAlignment="Right" Margin="0,12,0,0" /> </StackPanel> </Grid> </controls:ChildWindow>

后台代码

namespace WebGIS { public partial class RegistPage : ChildWindow { public RegistPage() { InitializeComponent(); }

private void OKButton_Click(object sender, RoutedEventArgs e) { this.DialogResult = true; }

private void CancelButton_Click(object sender, RoutedEventArgs e) { this.DialogResult = false; } } }

老师例子

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原文地址：http://www.cnblogs.com/aisi-liu/p/4227620.html

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