在Telerik for silverlight控件radtreeview、textBox、RadGridView中实现拖拉控件的 *** 作

概述效果图： 1.首先构造实体类Team view plain public class Team       {           public Team(string name)           {               this.Name = name;           }              public string Name { get; set; }       } @H_404_6@

效果图：

1.首先构造实体类Team

view plain public class Team       {           public Team(string name)           {               this.name = name;           }              string name { get; set; }       }  
2.构造实体类

class division      {          public division(        {                          this.Teams = new ObservableCollection<Team>();          }      set; }   public ObservableCollection<Team> Teams {     }  
3.构造实体类League

class League   public League(             this.divisions = new ObservableCollection<division>();           }   string name           {   get;   set;   public ObservableCollection<division> divisions   get;   set;       }  
4.构造一个提供数据的类RadTreeVIEwSampleData

class RadTreeVIEwSampleData   public RadTreeVIEwSampleData()   this.InitializeLeaguesDataSource();   public ObservableCollection<League> LeaguesDataSource   private voID InitializeLeaguesDataSource()   this.LeaguesDataSource = new ObservableCollection<League>();               League l;               division d;   this.LeaguesDataSource.Add(l = new League("League A"));               l.divisions.Add((d = new division("division A")));               d.Teams.Add(new Team("Team I"));               d.Teams.Add(new Team("Team II"));   new Team("Team III"));   new Team("Team IV"));   new Team("Team V"));   new division("division B")));   new Team("Team Blue"));   new Team("Team Red"));   new Team("Team Yellow"));   new Team("Team Green"));   new Team("Team Orange"));   new division("division C")));   new Team("Team East"));   new Team("Team West"));   new Team("Team north"));   new Team("Team South"));   new League("League B"));   new Team("Team 1"));   new Team("Team 2"));   new Team("Team 3"));   new Team("Team 4"));   new Team("Team 5"));   new Team("Team Diamond"));   new Team("Team Heart"));   new Team("Team Club"));   new Team("Team Spade"));               l.divisions.Add((d = new division("division C")));   new Team("Team Alpha"));   new Team("Team Beta"));   new Team("Team Gamma"));   new Team("Team Delta"));   new Team("Team Epsilon"));       }  

5.定义页面

<UserControl.Resources>        <sampleData:RadTreeVIEwSampleData x:Key="DataSource"/>        <DataTemplate x:Key="Team">            <TextBlock Text="{Binding name}"/>        </DataTemplate>        <telerik:HIErarchicalDataTemplate x:Key="division"       ItemsSource="{Binding Teams}"       ItemTemplate="{StaticResource Team}">            <TextBlock Text="{Binding name}"/>        </telerik:HIErarchicalDataTemplate>        <telerik:HIErarchicalDataTemplate x:Key="League"       ItemsSource="{Binding divisions}"       ItemTemplate="{StaticResource division}">            <TextBlock Text="{Binding name}"/>        </telerik:HIErarchicalDataTemplate>        <DataTemplate x:Key="ListBoxDataTemplate">            <TextBlock Text="{Binding name}"/>        </DataTemplate>    </UserControl.Resources>    <GrID x:name="LayoutRoot" Background="White" margin="8">        <GrID.ColumnDeFinitions>            <ColumnDeFinition WIDth="120"/>            <ColumnDeFinition WIDth="100"/>            <ColumnDeFinition WIDth="*"/>        </GrID.ColumnDeFinitions>        <GrID.RowDeFinitions>            <RowDeFinition Height="auto"/>            <RowDeFinition/>        </GrID.RowDeFinitions>        <TextBlock Text="RadTreeVIEw" FontSize="16" margin="5"               VerticalAlignment="Bottom" />        <TextBlock Text="TextBox" FontSize="16" GrID.Column="1" VerticalAlignment="Bottom"               margin="5" />        <TextBlock Text="RadGrIDVIEw" FontSize="16" GrID.Column="2" VerticalAlignment="Bottom"               margin="5" />        <telerik:RadTreeVIEw x:name="radTreeVIEw" IsDragDropEnabled="True" margin="0,8,0"       IsDragtooltipEnabled="False" GrID.Row="1"       ItemsSource="{Binding Source={StaticResource DataSource},Path=LeaguesDataSource}"       ItemTemplate="{StaticResource League}"/>        <TextBox x:name="textBox" GrID.Column="1" GrID.Row="1"       VerticalAlignment="top" HorizontalAlignment="left" WIDth="90" margin="0,0"/>        <telerik:RadGrIDVIEw x:name="radGrIDVIEw" GrID.Column="2" GrID.Row="1"         Height="280" margin="0,0"       VerticalAlignment="top" autoGenerateColumns="False"       ItemsSource="{Binding Source={StaticResource DataSource},Path=EmptyTeamDataSource}" SelectionChanged="radGrIDVIEw_SelectionChanged">            <telerik:RadGrIDVIEw.Columns>                <telerik:GrIDVIEwDataColumn DataMemberBinding="{Binding ID}"/>                <telerik:GrIDVIEwDataColumn DataMemberBinding="{Binding name}"/>                <telerik:GrIDVIEwDataColumn DataMemberBinding="{Binding ImageUrl}"/>            </telerik:RadGrIDVIEw.Columns>        </telerik:RadGrIDVIEw>    </GrID>

6.定义变量与构造函数，其中设置textBox，radgrIDVIEw允许拖拉并绑定drop的命令

 private ObservableCollection<Team> aaa=new ObservableCollection<Team>();         public Tree2()        {            InitializeComponent();            //radGrIDVIEw.            RadDragAndDropManager.SetAllowDrop(textBox,true);            RadDragAndDropManager.SetAllowDrop(radGrIDVIEw,true);            RadDragAndDropManager.AddDropqueryHandler(textBox,new EventHandler<DragDropqueryEventArgs>(this.TextBox_OnDropquery));            RadDragAndDropManager.AddDropInfoHandler(textBox,new EventHandler<DragDropEventArgs>(this.TextBox_OnDropInfo));            RadDragAndDropManager.AddDropqueryHandler(radGrIDVIEw,new EventHandler<DragDropqueryEventArgs>(this.RadGrIDVIEw_OnDropquery));            RadDragAndDropManager.AddDropInfoHandler(radGrIDVIEw,new EventHandler<DragDropEventArgs>(this.RadGrIDVIEw_OnDropInfo));         }

7.drop的相关逻辑

   private voID TextBox_OnDropquery(object sender,DragDropqueryEventArgs e)        {            e.queryResult = true;            e.Options.ArrowCue = RadDragAndDropManager.GenerateArrowCue();        }        private voID TextBox_OnDropInfo(object sender,DragDropEventArgs e)        {            if (e.Options.Status == DragStatus.DropComplete)            {                object item = (e.Options.Payload as Collection<Object>)[0];                PropertyInfo info = item.GetType().GetProperty("name");                textBox.Text = info == null ? String.Empty : info.GetValue(item,null).ToString();            }        }        private voID RadGrIDVIEw_OnDropquery(object sender,DragDropqueryEventArgs e)        {            e.queryResult = true;        }        private voID RadGrIDVIEw_OnDropInfo(object sender,DragDropEventArgs e)        {            if (e.Options.Status == DragStatus.DropComplete)            {                foreach (object dropItem in e.Options.Payload as Collection<Object>)                {                    Team team = dropItem as Team;                    if (team != null)                    {                        aaa.Add(team);                    }                    this.radGrIDVIEw.ItemsSource = aaa;                        //(this.radGrIDVIEw.ItemsSource as ObservableCollection<Team>).Add(team);                }            }        }

总结

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