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JQuery Show Large Image Preview When Hover On Link In Asp.Net

Sep 17, 2012
Introduction:

In this article I will explain how to show large image preview when hover on link or image using JQuery in asp.net.

Description:

In previous article I explained Generate thumbnail from images in asp.net, Generate thumbnails from YouTube videos using JQuery and many articles relating to JQuery, asp.net, SQL Server etc. Now I will explain how to show large image preview when hover on link or image using JQuery in asp.net.

To implement this concept first create new web application >> Right click on your application >> Select Add New Folder and Give name as Images >> Once folder created place some images in folder to show preview of images when hover on link using JQuery in asp.net.

After completion of folder creation and insertion of images in folder write the following code in your aspx page


<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Show Image Preview when hover on Link using jQuery</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js">
</script>
<script type="text/javascript" language="javascript">
$(document).ready(function() {
ShowImagePreview();
});
// Configuration of the x and y offsets
function ShowImagePreview() {
xOffset = -20;
yOffset = 40;

$("a.preview").hover(function(e) {
this.t = this.title;
this.title = "";
var c = (this.t != "") ? "<br/>" + this.t : "";
$("body").append("<p id='preview'><img src='" + this.href + "' alt='Image preview' />" + c + "</p>");
$("#preview")
.css("top", (e.pageY - xOffset) + "px")
.css("left", (e.pageX + yOffset) + "px")
.fadeIn("slow");
},

function() {
this.title = this.t;
$("#preview").remove();
});

$("a.preview").mousemove(function(e) {
$("#preview")
.css("top", (e.pageY - xOffset) + "px")
.css("left", (e.pageX + yOffset) + "px");
});
};

</script>
<style type="text/css">
#preview{
position:absolute;
border:3px solid #ccc;
background:#333;
padding:5px;
display:none;
color:#fff;
box-shadow: 4px 4px 3px rgba(103, 115, 130, 1);
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DataList ID="dtlist" runat="server" RepeatColumns="4" CellPadding="5">
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" class="preview" ToolTip='<%#Bind("Name") %>' NavigateUrl='<%# Bind("Name", "~/Images/{0}") %>' runat="server">
<asp:Image Width="100" ID="Image1" ImageUrl='<%# Bind("Name", "~/Images/{0}") %>' runat="server" />
</asp:HyperLink>
</ItemTemplate>
<ItemStyle BorderColor="Brown" BorderStyle="dotted" BorderWidth="3px" HorizontalAlign="Center"
VerticalAlign="Bottom" />
</asp:DataList>
</div>
</form>
</body>
</html>
Now add the following namespaces in code behind

C# Code

using System;
using System.Collections;
using System.IO;
After add namespaces write the following code in code behind

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindDataList();
}
}
protected void BindDataList()
{
DirectoryInfo dir = new DirectoryInfo(MapPath("Images"));
FileInfo[] files = dir.GetFiles();
ArrayList listItems = new ArrayList();
foreach (FileInfo info in files)
{
listItems.Add(info);
}
dtlist.DataSource = listItems;
dtlist.DataBind();
}
VB.NET Code


Imports System.Collections
Imports System.IO
Partial Class VBCodeSamples
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load

If Not IsPostBack Then
BindDataList()
End If
End Sub
Protected Sub BindDataList()
Dim dir As New DirectoryInfo(MapPath("Images"))
Dim files As FileInfo() = dir.GetFiles()
Dim listItems As New ArrayList()
For Each info As FileInfo In files
listItems.Add(info)
Next
dtlist.DataSource = listItems
dtlist.DataBind()
End Sub
Demo 

Download sample code attached

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5 comments :

Imtiaz said...

Very Good Post. Thank so much for your great work.

RaviKant Singh said...

sir i have a problem, in show some format.
sir i am creating the Identity card for school using the datalist in repeater. i show the id cards btwn the student admission no. now iam trying to show only 6 id cards on one page another another 6 on another page and so on as per srch.

so sir give me some idea or if u have some code then help me sir.

and this portal is very gud for fresher as well as exp. thnx for www.aspdotnet-suresh.com

Gaurav said...

how can i use this inside colorbox

Anonymous said...

Can I have a click to navigate option on this?

Iswar Kumar Chettri said...

This article is really helpful for me for developing my website. Thank you for posting such article.

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