displaymodemenucs.ascx

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<%@ Control Language="C#" AutoEventWireup="true" CodeFile="DisplayModeMenuCS.ascx.cs" Inherits="DisplayModeMenuCS" %>
<script runat="server">
 // Use a field to reference the current WebPartManager.
  WebPartManager _manager;
  void Page_Init(object sender, EventArgs e)
  {
    Page.InitComplete += new EventHandler(InitComplete);
  }  
  void InitComplete(object sender, System.EventArgs e)
  {
    _manager = WebPartManager.GetCurrentWebPartManager(Page);
    String browseModeName = WebPartManager.BrowseDisplayMode.Name;
    // 将WebPartManager的显示模式填冲到DisplayModeDropdown控件中
    foreach (WebPartDisplayMode mode in _manager.SupportedDisplayModes)
    {
      String modeName = mode.Name;
      if (mode.IsEnabled(_manager))
      {
        ListItem item = new ListItem(modeName, modeName);
        DisplayModeDropdown.Items.Add(item);
      }
    }
  }
  // 选择模式
  void DisplayModeDropdown_SelectedIndexChanged(object sender, EventArgs e)
  {
    String selectedMode = DisplayModeDropdown.SelectedValue;
    WebPartDisplayMode mode = _manager.SupportedDisplayModes[selectedMode];
    if (mode != null)
      _manager.DisplayMode = mode;
  }
  void Page_PreRender(object sender, EventArgs e)
  {
      ListItemCollection items = DisplayModeDropdown.Items;
      int selectedIndex =
        items.IndexOf(items.FindByText(_manager.DisplayMode.Name));
      DisplayModeDropdown.SelectedIndex = selectedIndex;
  }
</script>
<div>
  <asp:Panel ID="Panel1" runat="server" 
    Borderwidth="1" 
    Width="230" 
    BackColor="lightgray"
    Font-Names="Verdana, Arial, Sans Serif" >
    <asp:Label ID="Label1" runat="server" 
      Text="&nbsp;显示模式" 
      Font-Bold="true"
      Font-Size="8"
      Width="120" />
    <asp:DropDownList ID="DisplayModeDropdown" runat="server"  
      AutoPostBack="true" 
      Width="120"
      OnSelectedIndexChanged="DisplayModeDropdown_SelectedIndexChanged" />
      &nbsp;<asp:Label ID="Label2" runat="server" Font-Size="8"　Text="选择显示模式" Width="79px"></asp:Label>
  </asp:Panel>
</div>