C# - Binding Data to List Control

An ASP.NET list control can be bound to any data source that implements the IEnumerable, ICollection, or IListSource interfaces (for example, DataView, OleDBDataReader, SQLDataReader, Hashtable, and ArrayList). eXtensible Markup Language (XML) data can also be bound to the list controls, to fill a DataView object with its data and then bind the List Control to the DataView object.

This article will show you some examples of how to bind a data to List Control as follow:

Binding a List Control to an ArrayList

<%@Page Language="C#" %>
<script language="C#" runat="server">
     void Page_Load(Object sender, EventArgs e){
          if(!Page.IsPostBack){
 
               ArrayList arlist = new ArrayList();
               arlist.Add("Red");
               arlist.Add("Green");
               arlist.Add("Blue");
               arlist.Add("Yellow");

              myRBList.DataSource = arlist;
              myRBList.DataBind();
          }
     }

     void Submit_click(Object src, EventArgs e){
          if(myRBList.SelectedIndex > -1){
              msgLabel.Text = "You select : " + myRBList.SelectedItem.Text;
          }
     }
</script>
<html>
<body>
<form runat="server" id="form1" name="form1">

<asp:RadioButtonList id="myRBList" runat="server" />
<br><br>
<asp:button id="btnSubmit" runat="server" Text="Submit" onclick="Submit_click" />
<br><br>
<asp:label id="msgLabel" runat="server" />

</form>
</body>
</html>

Binding a List Control to a Hastable

<%@Page Language="C#" %>
<script language="C#" runat="server">
     void Page_Load(Object sender, EventArgs e){
          if(!Page.IsPostBack){
 
               Hashtable h = new Hashtable();
               h.Add("Product 1", "5");
               h.Add("Product 2", "8");
               h.Add("Product 3", "2");
               h.Add("Product 4", "13");

              myGrid.DataSource = h;
              myGrid.DataBind();
          }
     }
</script>
<html>
<body>
<asp:DataGrid id="myGrid" runat="server" AutoGenerateColumns="false">
   <Columns>
        <asp:TemplateColumn HeaderText="Product">
              <ItemTemplate>
                     <%# ((DictionaryEntry)Container.DataItem).Key %>
              </ItemTemplate>
        </asp:TemplateColumn>
        <asp:TemplateColumn HeaderText="Quantity">
              <ItemTemplate>
                     <%# ((DictionaryEntry)Container.DataItem).Value %>
              </ItemTemplate>
        </asp:TemplateColumn>
   </Columns>
</asp:DataGrid>

</body>
</html>

Binding a List Control to Dataview

<%@Page Language="C#" %>
<%@Import Namespace="System.Data" %>
<%@Import Namespace="System.Data.SqlClient" %>

<script language="C#" runat="server">
     void Page_Load(Object sender, EventArgs e){
           SqlConnection conn = new SqlConnection("server=localhost;uid=sa;pwd=;
                          database=northwind");
          SqlDataAdapter adapter = new SqlDataAdapter("select * from employees", conn);

          DataSet ds = new DataSet();
          adapter.Fill(ds, "employees");

         mygrid.DataSource = ds.Tables["employees"];
         mygrid.DataBind();
     }
</script>
<html>
<body>

<asp:datagrid id="mygrid" runat="server" />

</body>
</html>

Binding a List Control to XML Data Source

<%@Page Language="C#" %>
<%@Import Namespace="System.Data" %>
<%@Import Namespace="System.IO" %>

<script language="C#" runat="server">
     void Page_Load(Object sender, EventArgs e){

          DataSet ds = new DataSet();
          
          FileStream fs = new FileStream(Server.MapPath("mydata.xml") ,
                                                                 FileMode.Open, FileAccess.Read);
          StreamReader reader = new StreamReader(fs);
          ds.ReadXml(reader);

          fs.close();

          DataView source = new DataView(ds.Tables[0]);

          mygrid.DataSource = source;
          mygrid.DataBind();
     }
</script>
<html>
<body>

<asp:datagrid id="mygrid" runat="server" />

</body>
</html>
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