HyperLink Web Server Control
HyperLink is an asp.net web server control. we can display a hyperlink
on a web form page by inserting a HyperLink server control on the page.
HyperLink sever control can render as either text or as graphics. HyperLink
control generates a link that allows users to navigate to another page or
another location on the same page. NavigateUrl property value stores the link
destination. To display hyperlink control as text we need to set the Text
property value and to display as an image set the ImageUrl property value. If
we set both ImageUrl and Text property values, ImageUrl takes precedence.
HyperLink server control's other important property is the Target property. The .net developers can specify the frame or window to display the linked page by this Target property settings. Target property has four possible values those are _blank, _parent, _self, and _top. The _blank value displays the destination page in a new window without frames. The _parent shows the linked page in the immediate frameset parent. The _self shows the page in frame with focus and the _top show the linked page in the full window without frames.
We can use a tilde(~) wildcard to specify the application root. It is very useful to set HyperLink NavigateUrl property value. So we don't need to hardcode a directory name into the application's relative URL.
We can set the hyperlink control's properties programmatically at run time such as NavigateUrl, Text, and ImageUrl. The main advantage of hyperlink server control is that we can set link properties in server code. As an example, we can dynamically change the text and destination URL of a link. We can data bind hyperlink control to specify the target URL. To create data-bound hyperlink controls, we can add them as children of Repeater, DataList, DetailsView, GridView, or Formview control. HyperLink does not raise a click event in the server code when someone clicks the link.
The following c# example source code demonstrates to us how can we use hyperlink web server control in asp.net. It also shows the declarative syntax of hyperlink control.
HyperLink server control's other important property is the Target property. The .net developers can specify the frame or window to display the linked page by this Target property settings. Target property has four possible values those are _blank, _parent, _self, and _top. The _blank value displays the destination page in a new window without frames. The _parent shows the linked page in the immediate frameset parent. The _self shows the page in frame with focus and the _top show the linked page in the full window without frames.
We can use a tilde(~) wildcard to specify the application root. It is very useful to set HyperLink NavigateUrl property value. So we don't need to hardcode a directory name into the application's relative URL.
We can set the hyperlink control's properties programmatically at run time such as NavigateUrl, Text, and ImageUrl. The main advantage of hyperlink server control is that we can set link properties in server code. As an example, we can dynamically change the text and destination URL of a link. We can data bind hyperlink control to specify the target URL. To create data-bound hyperlink controls, we can add them as children of Repeater, DataList, DetailsView, GridView, or Formview control. HyperLink does not raise a click event in the server code when someone clicks the link.
The following c# example source code demonstrates to us how can we use hyperlink web server control in asp.net. It also shows the declarative syntax of hyperlink control.
HyperLink.aspx
<%@ Page Language="C#" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>asp.net HyperLink example: how to use</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:Red">HyperLink example</h2>
<asp:HyperLink
ID="HyperLink1"
runat="server"
Text="Visit Flying Crow Page"
NavigateUrl="~/FlyingCrow.aspx"
>
</asp:HyperLink>
<br />
<asp:HyperLink
ID="HyperLink2"
runat="server"
>
</asp:HyperLink>
</div>
</form>
</body>
</html>
FlyingCrow.aspx
<%@ Page Language="C#" %>
<!DOCTYPE html">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>asp.net HyperLink example: FlyingCrow</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:Navy">Flying Crow</h2>
<asp:Image
ID="Image1"
runat="server"
ImageUrl="~/Images/FlyingCrow.jpg"
BorderWidth="3"
BorderColor="SaddleBrown"
/>
</div>
</form>
</body>
</html>
