Skip to main content

How to use HyperLink in asp.net

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.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>
Labels:

Popular posts from this blog

Restricting Jetpack Compose TextField to Numeric Input Only

Jetpack Compose has revolutionized Android development with its declarative approach, enabling developers to build modern, responsive UIs more efficiently. Among the many components provided by Compose, TextField is a critical building block for user input. However, ensuring that a TextField accepts only numeric input can pose challenges, especially when considering edge cases like empty fields, invalid characters, or localization nuances. In this blog post, we'll explore how to restrict a Jetpack Compose TextField to numeric input only, discussing both basic and advanced implementations. Why Restricting Input Matters Restricting user input to numeric values is a common requirement in apps dealing with forms, payment entries, age verifications, or any data where only numbers are valid. Properly validating input at the UI level enhances user experience, reduces backend validation overhead, and minimizes errors during data processing. Compose provides the flexibility to implement ...
Read more

jetpack compose - TextField remove underline

Compose TextField Remove Underline The TextField is the text input widget of android jetpack compose library. TextField is an equivalent widget of the android view system’s EditText widget. TextField is used to enter and modify text. The following jetpack compose tutorial will demonstrate to us how we can remove (actually hide) the underline from a TextField widget in an android application. We have to apply a simple trick to remove (hide) the underline from the TextField. The TextField constructor’s ‘colors’ argument allows us to set or change colors for TextField’s various components such as text color, cursor color, label color, error color, background color, focused and unfocused indicator color, etc. Jetpack developers can pass a TextFieldDefaults.textFieldColors() function with arguments value for the TextField ‘colors’ argument. There are many arguments for this ‘TextFieldDefaults.textFieldColors()’function such as textColor, disabledTextColor, backgroundColor, cursorC...
Read more

jetpack compose - Image clickable

Compose Image Clickable The Image widget allows android developers to display an image object to the app user interface using the jetpack compose library. Android app developers can show image objects to the Image widget from various sources such as painter resources, vector resources, bitmap, etc. Image is a very essential component of the jetpack compose library. Android app developers can change many properties of an Image widget by its modifiers such as size, shape, etc. We also can specify the Image object scaling algorithm, content description, etc. But how can we set a click event to an Image widget in a jetpack compose application? There is no built-in property/parameter/argument to set up an onClick event directly to the Image widget. This android application development tutorial will demonstrate to us how we can add a click event to the Image widget and make it clickable. Click event of a widget allow app users to execute a task such as showing a toast message by cli...
Read more