Widgets 整理

1.滑动条

http://www.newnaw.com/pub/sl/031.html

<--!grid中的内容-->

<Grid x:Name="slidergrid" HorizontalAlignment="Left" VerticalAlignment="Center" Background="Azure" Margin="20">
        <StackPanel Orientation="Vertical">
            <Button x:Name="btnzoomin" Content="+" Click="btnzoomin_Click" />
            <Slider x:Name="sliderLOD" Orientation="Vertical"  Height="200" SmallChange="1" LargeChange="1"  Minimum="0" Cursor="Hand" ValueChanged="slider1_ValueChanged" />
            <Button x:Name="btnzoomout" Content="-" Click="btnzoomout_Click" />
        </StackPanel>
    </Grid>

 

cs文件后台代码

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;


    
      using
    
       System.ComponentModel;


    
      namespace
    
       customcontrol
{
 
    
      public
    
       
    
      partial
    
       
    
      class
    
       mapslider : UserControl
 {
 
    
      private
    
       mymap map 
    
      =
    
       
    
      new
    
       mymap();
 
    
      public
    
       ESRI.ArcGIS.Map Map
 {
 
    
      get
    
      
 {
 
    
      return
    
       map.Map;
 }
 
    
      set
    
      
 {
 map.Map
    
      =
    
      value;
 
    
      if
    
       (map.Map 
    
      !=
    
       
    
      null
    
      )
 {
 Map.ExtentChanged 
    
      +=
    
       
    
      new
    
       EventHandler
    
      <
    
      ESRI.ArcGIS.ExtentEventArgs
    
      >
    
      (map_ExtentChanged);
 Map.SnapToLevels 
    
      =
    
       
    
      true
    
      ;
 ((ESRI.ArcGIS.ArcGISTiledMapServiceLayer)Map.Layers[
    
      0
    
      ]).Initialized 
    
      +=
    
       
    
      new
    
       EventHandler
    
      <
    
      EventArgs
    
      >
    
      (layer0_initialized);
 }

 }
 }

 
    
      private
    
       
    
      void
    
       layer0_initialized(
    
      object
    
       o,EventArgs e)
 {
 sliderLOD.Maximum 
    
      =
    
       ((ESRI.ArcGIS.ArcGISTiledMapServiceLayer)Map.Layers[
    
      0
    
      ]).TileInfo.Lods.Length 
    
      -
    
       
    
      1
    
      ;
 }

 
    
      public
    
       mapslider()
 {
 InitializeComponent();
 }

 
    
      private
    
       
    
      void
    
       slider1_ValueChanged(
    
      object
    
       sender, RoutedPropertyChangedEventArgs
    
      <
    
      double
    
      >
    
       e)
 {
 
    
      if
    
       (map.Map
    
      !=
    
      null
    
      )
 {
 Map.ZoomToResolution(((ESRI.ArcGIS.ArcGISTiledMapServiceLayer)Map.Layers[
    
      0
    
      ]).TileInfo.Lods[Convert.ToInt32(e.NewValue)].Resolution);
 }
 }

 
    
      private
    
       
    
      void
    
       map_ExtentChanged(
    
      object
    
       o, ESRI.ArcGIS.ExtentEventArgs e)
 {
 ESRI.ArcGIS.ArcGISTiledMapServiceLayer layer 
    
      =
    
       Map.Layers[
    
      0
    
      ] 
    
      as
    
       ESRI.ArcGIS.ArcGISTiledMapServiceLayer;
 
    
      int
    
       i;
 
    
      for
    
       (i 
    
      =
    
       
    
      0
    
      ; i 
    
      <
    
       layer.TileInfo.Lods.Length; i
    
      ++
    
      )
 {
 
    
      if
    
       (Map.Resolution 
    
      ==
    
       layer.TileInfo.Lods[i].Resolution)
 
    
      break
    
      ;
 }

 sliderLOD.Value 
    
      =
    
       i;
 }

 
    
      private
    
       
    
      void
    
       btnzoomin_Click(
    
      object
    
       sender, RoutedEventArgs e)
 {
 sliderLOD.Value 
    
      +=
    
       
    
      1
    
      ;
 }

 
    
      private
    
       
    
      void
    
       btnzoomout_Click(
    
      object
    
       sender, RoutedEventArgs e)
 {
 sliderLOD.Value 
    
      -=
    
       
    
      1
    
      ;
 }
 }

 
    
      //
    
      执行了这个接口后，当在主页面page.xaml.cs中给Map赋值的时候，就能返到set语句中，以便执行绑定事件的代码
    
      

    
       
    
      public
    
       
    
      class
    
       mymap:INotifyPropertyChanged
 {
 
    
      private
    
       ESRI.ArcGIS.Map map;
 
    
      public
    
       ESRI.ArcGIS.Map Map
 {
 
    
      get
    
      {
    
      return
    
       map;}
 
    
      set
    
      
 {
 map 
    
      =
    
       value;
 
    
      if
    
       (PropertyChanged
    
      !=
    
      null
    
      )
 {
 PropertyChanged(
    
      this
    
      , 
    
      new
    
       PropertyChangedEventArgs(
    
      "
    
      Map
    
      "
    
      ));
 }
 }
 }

 
    
      public
    
       
    
      event
    
       PropertyChangedEventHandler PropertyChanged;

 }
}