ASP.Net/Data Binding/DataList — различия между версиями

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Текущая версия на 11:52, 26 мая 2010

asp:DataList repeat column (C#)

/*
ASP.NET 2.0 Unleashed (Unleashed) (Hardcover)
by Stephen Walther 
# Publisher: Sams; Bk&CD-Rom edition (June 6, 2006)
# Language: English
# ISBN: 0672328232
*/       
       
       
<%@ Page Language="C#" %>
<%@ Import Namespace="System.IO" %>
<script runat="server">
    protected void btnAdd_Click(object sender, EventArgs e)
    {
        if (upImage.HasFile)
        {
            if (CheckFileType(upImage.FileName))
            {
                upImage.SaveAs(MapPath(upImage.FileName));
            }
        }
    }
    bool CheckFileType(string fileName)
    {
        string ext = Path.GetExtension(fileName);
        switch (ext.ToLower())
        {
            case ".gif":
                return true;
            case ".png":
                return true;    
            case ".jpg":
                return true;            
            case ".jpeg":
                return true;
            default:
                return false;        
        }
    }
    void Page_PreRender()
    {
        string upFolder = MapPath(".");
        DirectoryInfo dir = new DirectoryInfo(upFolder);
        dlstImages.DataSource = dir.GetFiles();
        dlstImages.DataBind();
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>FileUpload File</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:Label
        id="lblImageFile"
        Text="Image File:"
        AssociatedControlID="upImage"
        Runat="server" />
    <asp:FileUpload
        id="upImage"
        Runat="server" />
    <br /><br />
    
    <asp:Button
        id="btnAdd"
        Text="Add Image"
        OnClick="btnAdd_Click" 
        Runat="server" />
    <hr />
    
    <asp:DataList
        id="dlstImages"
        RepeatColumns="3"
        runat="server">
        <ItemTemplate>
        <asp:Image ID="Image1" 
            ImageUrl="<%# Eval("Name", "./{0}") %>"
            style="width:200px"
            Runat="server" />
        <br />
        <%# Eval("Name") %>    
        </ItemTemplate>
    </asp:DataList>
    
    </div>
    </form>
</body>
</html>



Bind data to asp:datalist (VB.net)

<%@ Page Language="vb" %>
<%@ Import Namespace="System.Data" %>
<html>
<head>
   <title>Databound Control Example</title>
   <script runat="server">
      Sub Page_Load()
         MyDataGrid.DataSource = CreateData()
         MyDataGrid.DataBind()
         MyDataList.DataSource = CreateData()
         MyDataList.DataBind()
         MyRepeater.DataSource = CreateData()
         MyRepeater.DataBind()
      End Sub
      Function CreateData() As DataTable
         Dim DT As New DataTable()
         Dim Row1, Row2, Row3, Row4 As DataRow
         DT.Columns.Add(New DataColumn("name", System.Type.GetType("System.String")))
         DT.Columns.Add(New DataColumn("city", System.Type.GetType("System.String")))
         Row1 = DT.NewRow()
         Row1("name") = "Name 1"
         Row1("city") = "City 1"
         DT.Rows.Add(Row1)
         Row2 = DT.NewRow()
         Row2("name") = "Name 2"
         Row2("city") = "City 2"
         DT.Rows.Add(Row2)
         Row3 = DT.NewRow()
         Row3("name") = "Name 3"
         Row3("city") = "City 3"
         DT.Rows.Add(Row3)
         Row4 = DT.NewRow()
         Row4("name") = "Name 4"
         Row4("city") = "City 4"
         DT.Rows.Add(Row4)
         Return DT
      End Function
   </script>
</head>
<body>
   <h1>Databound Control Example</h1>
   <form runat="server">
      <asp:table id="MyTable" border="1" cellpadding="5" cellspacing="0" runat="server">
         <asp:tablerow runat="server">
            <asp:tablecell runat="server">
               DataGrid Control:
            </asp:tablecell>
            <asp:tablecell runat="server">
               <asp:datagrid id="MyDataGrid"
                  allowpaging="true"
                  allowsorting="true"
                  alternatingitemstyle-backcolor="LightSkyBlue"
                  backcolor="Blue"
                  forecolor="White"
                  cellpadding="2"
                  cellspacing="0"
                  headerstyle-backcolor="DarkBlue"
                  headerstyle-forecolor="Yellow"
                  pagerstyle-mode="NumericPages"
                  pagesize="5"
                  runat="server"/>
            </asp:tablecell>
         </asp:tablerow>
         <asp:tablerow runat="server">
            <asp:tablecell runat="server">
               DataList Control:
            </asp:tablecell>
            <asp:tablecell runat="server">
               <asp:datalist id="MyDataList"
                  alternatingitemstyle-backcolor="LightSkyBlue"
                  backcolor="Blue"
                  bordercolor="Black"
                  cellpadding="2"
                  cellspacing="0"
                  forecolor="White"
                  headerstyle-backcolor="DarkBlue"
                  headerstyle-forecolor="Yellow"
                  repeatcolumns="1"
                  repeatdirection="vertical"
                  repeatlayout="table" 
                  runat="server">
                  <headertemplate>
                     Composers
                  </headertemplate>
                  <itemtemplate>
                     <%# databinder.eval(container.dataitem, "name") %>
                  </itemtemplate>
               </asp:datalist>
            </asp:tablecell>
         </asp:tablerow>
         <asp:tablerow runat="server">
            <asp:tablecell runat="server">
               Repeater Control:
            </asp:tablecell>
            <asp:tablecell runat="server">
               <asp:repeater id="MyRepeater" runat="server">
                  <headertemplate>
                     <table cellpadding="5" cellspacing="0">
                        <tr>
                           <td>Name<hr/></td>
                           <td>City<hr/></td>
                        </tr>
                  </headertemplate>
                  <itemtemplate>
                        <tr>
                           <td><%# DataBinder.Eval(Container.DataItem, _
                                  "name") %></td>
                           <td><%# DataBinder.Eval(Container.DataItem, _
                                  "city") %></td>
                        </tr>
                  </itemtemplate>
                  <footertemplate>
                     </table>
                  </footertemplate>
               </asp:repeater>
            </asp:tablecell>
         </asp:tablerow>
      </asp:table>
   </form>
</body>
</html>
Источник — «http://nfex.ru/index.php?title=ASP.Net/Data_Binding/DataList&oldid=2051»