HyperLinkColumn.DataTextField Property

 

Gets or sets the field from a data source to bind to the text caption of the hyperlinks in the HyperLinkColumn.

Namespace:   System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

Public Overridable Property DataTextField As String

Property Value

Type: System.String

The field name from a data source to bind to the text caption of the hyperlinks in HyperLinkColumn.

Use the DataTextField property to specify the field name from a data source to bind to the text caption of the hyperlinks in HyperLinkColumn. When the text caption is data bound to a field, the text caption of each hyperlink in the column is set with a corresponding value in the specified field. This allows you to set a different text caption for each hyperlink in the column. To specify the same text caption for each row in the column, set the Text property instead of this property.

System_CAPS_noteNote

The DataTextField and Text properties cannot both be set at the same time. If both properties are set, the DataTextField property takes precedence.

When you using data binding, you can specify a custom display format for the text caption of the hyperlinks by setting the DataTextFormatString property.

The following example demonstrates how to use the DataTextField property to specify the field in the data source to bind to the text caption of the hyperlinks in the HyperLinkColumn.

System_CAPS_noteNote

The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. This code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Forms Page Code Model.

<%@ Page Language="VB" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >

<head>
    <title>HyperLinkColumn Example</title>
<script runat="server">

      Function CreateDataSource() As ICollection 

         Dim dt As DataTable = New DataTable()
         Dim dr As DataRow
         Dim i As Integer

         dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32)))
         dt.Columns.Add(New DataColumn("PriceValue", GetType(Double)))

         For i = 0 to 2 

            dr = dt.NewRow()

            dr(0) = i
            dr(1) = CDbl(i) * 1.23

            dt.Rows.Add(dr)

         Next i

         Dim dv As DataView = New DataView(dt)
         Return dv

      End Function

      Sub Page_Load(sender As Object, e As EventArgs) 

         MyDataGrid.DataSource = CreateDataSource()
         MyDataGrid.DataBind()

      End Sub

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3>HyperLinkColumn Example</h3>

      <asp:DataGrid id="MyDataGrid" 
           BorderColor="black"
           BorderWidth="1"
           GridLines="Both"
           AutoGenerateColumns="false"
           runat="server">

         <HeaderStyle BackColor="#aaaadd"/>

         <Columns>

            <asp:HyperLinkColumn
                 HeaderText="Select an Item"
                 DataNavigateUrlField="IntegerValue"
                 DataNavigateUrlFormatString="detailspage.aspx?id={0}"
                 DataTextField="PriceValue"
                 DataTextFormatString="{0:c}"
                 Target="_blank"/>

         </Columns>

      </asp:DataGrid>

   </form>

</body>
</html>

The following corresponding example displays the item selected in the previous example.

<%@ Page Language="VB" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Details page for DataGrid</title>
<script runat="server">

      Sub Page_Load(sender As Object, e As EventArgs) 

         Label1.Text = "You selected item: " & Request.QueryString("id")

      End Sub

   </script>

</head>
<body>

   <h3>Details page for DataGrid</h3>

   <asp:Label id="Label1"
        runat="server"/>

</body>
</html>

.NET Framework
Available since 1.1
Return to top
Show: