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HyperLinkColumn.DataTextFormatString Property

Gets or sets the display format for the text caption of the hyperlinks in the HyperLinkColumn column.

[Visual Basic]
Public Overridable Property DataTextFormatString As String
[C#]
public virtual string DataTextFormatString {get; set;}
[C++]
public: __property virtual String* get_DataTextFormatString();
public: __property virtual void set_DataTextFormatString(String*);
[JScript]
public function get DataTextFormatString() : String;
public function set DataTextFormatString(String);

Property Value

The string that specifies the display format for the text caption of the hyperlinks in the column. The default value is String.Empty.

Remarks

Use the DataTextFormatString property to provide a custom display format for the text caption of the hyperlinks in the HyperLinkColumn. The specified format is applied to the text caption only when the text caption is data bound to a field in a data source. Specify the field to bind to the text caption of the hyperlinks in the column by setting the DataTextField property.

For information on the syntax of formatting strings, see String.Format.

Example

[Visual Basic, C#] The following example demonstrates how to use the DataTextFormatString property to format the data-bound text captions in the HyperLinkColumn.

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

<html>

<head>

   <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 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>

[C#] 
<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>

<html>

<head>

   <script runat="server">

      ICollection CreateDataSource() 
      {
         DataTable dt = new DataTable();
         DataRow dr;

         dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
         dt.Columns.Add(new DataColumn("PriceValue", typeof(Double)));
       
         for (int i = 0; i < 3; i++) 
         {
            dr = dt.NewRow();

            dr[0] = i;
            dr[1] = (Double)i * 1.23;

            dt.Rows.Add(dr);
         }

         DataView dv = new DataView(dt);
         return dv;
      }

      void Page_Load(Object sender, EventArgs e) 
      {
         MyDataGrid.DataSource = CreateDataSource();
         MyDataGrid.DataBind();
      }

   </script>

</head>

<body>

   <form 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>

[Visual Basic, C#] The following corresponding example displays the item selected in the previous example.

[Visual Basic] 
<%@ Page Language="VB" AutoEventWireup="True" %>
<html>
<head>
 
   <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>


[C#] 
<%@ Page Language="C#" AutoEventWireup="True" %>
<html>
<head>
 
   <script runat="server">
 
      void Page_Load(Object sender, EventArgs e) 
      {
         Label1.Text = "You selected item: " + Request.QueryString["id"];
      }
 
   </script>
 
</head>
<body>
 
   <h3>Details page for DataGrid</h3>
 
   <asp:Label id="Label1"
        runat="server"/>
 
</body>
</html>

[C++, JScript] No example is available for C++ or JScript. To view a Visual Basic or C# example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 2000, Windows XP Professional, Windows Server 2003 family

See Also

HyperLinkColumn Class | HyperLinkColumn Members | System.Web.UI.WebControls Namespace | DataTextField | String.Format | Formatting Overview

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