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Asp.Net Tag Cloud Example with Database in C#,VB.NET

Jul 18, 2014
Introduction:

Here I will explain how to create tag cloud in
asp.net website using jQuery, c#, vb.net with example or generate tag cloud in asp.net with database using jQuery, c#, vb.net.

Description:

In previous post I explained sitemap control example,
send html page as mail body in asp.net, send mail with images using gmail user credentials, send multiple attachments with email in asp.net, how to send mail with attachment in asp.net and many more articles related to asp.net using c#, vb.net. Now I will explain how to how to create tag cloud in asp.net website using jQuery, c#, vb.net with example.

To create tag cloud in website first create new website and write follwing code in Default.aspx page


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Tag Cloud in Asp.net using C#</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.2.js"></script>
<script type="text/javascript">
$(function() {
$.ajax({
type: "POST",
url: "Default.aspx?type=gettags",
data: "{}",
success: function(data) {
$('#tagsdiv').html(data);
},
error: function(result) {
alert("Error");
}
});
});
</script>
<style type="text/css">
a.TagSize1
{
font-family: Arial;
font-size: 8px;
padding:3px;
color: #000;
}

a.TagSize2
{
font-family: Arial;
font-size: 12px;
padding:3px;
color: #000;
}

a.TagSize3
{
font-family: Arial;
font-size: 16px;
padding:3px;
color: #000;
}

a.TagSize4
{
font-family: Arial;
font-size: 20px;
padding:3px;
color: #000;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div id="tagsdiv" style="width:50px">

</div>
</form>
</body>
</html>
After completion of aspx page write the following code in codebehind

C# Code


using System;
using System.Data;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string type = Request["type"];
string ReturnDataType = "application/html" ;
if(type=="gettags")
{
string rJson = GetTagDetails();
Response.ContentType = ReturnDataType;
Response.Write(rJson);
Response.End();
}
}
public string GetTagDetails()
{
DataTable dt = new DataTable();
dt.Columns.Add("Tagid", typeof(Int32));
dt.Columns.Add("TagName", typeof(string));
dt.Columns.Add("Noofarticles", typeof(string));
dt.Rows.Add(1, "Asp.Net", 100);
dt.Rows.Add(2, "C#.Net", 10);
dt.Rows.Add(3, "SQL Server", 30);
dt.Rows.Add(4, "jQuery", 20);
dt.Rows.Add(6, "javascript", 15);
dt.Rows.Add(7, "XSLT", 50);
string strleadDetails = string.Empty;
for (int i = 0; i < dt.Rows.Count; i++)
{
int j = Convert.ToInt32(dt.Rows[i][2].ToString());
if (j <= 10)
{
strleadDetails += "<a href=javascript:void(0) class=TagSize1>" + dt.Rows[i][1] + "</a>";
}
else if (j > 10 && j <= 20)
{
strleadDetails += "<a href=javascript:void(0) class=TagSize2>" + dt.Rows[i][1] + "</a>";
}
else if (j > 20 && j <= 50)
{
strleadDetails += "<a href=javascript:void(0) class=TagSize3>" + dt.Rows[i][1] + "</a>";
}
else if (j > 50 && j <= 100)
{
strleadDetails += "<a href=javascript:void(0) class=TagSize4>" + dt.Rows[i][1] + "</a>";
}
}
return strleadDetails;
}
}
VB.NET Code


Imports System.Data
Partial Class vbcode
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
Dim type As String = Request("type")
Dim ReturnDataType As String = "application/html"
If type = "gettags" Then
Dim rJson As String = GetTagDetails()
Response.ContentType = ReturnDataType
Response.Write(rJson)
Response.[End]()
End If
End Sub
Public Function GetTagDetails() As String
Dim dt As New DataTable()
dt.Columns.Add("Tagid", GetType(Int32))
dt.Columns.Add("TagName", GetType(String))
dt.Columns.Add("Noofarticles", GetType(String))
dt.Rows.Add(1, "Asp.Net", 100)
dt.Rows.Add(2, "C#.Net", 10)
dt.Rows.Add(3, "SQL Server", 30)
dt.Rows.Add(4, "jQuery", 20)
dt.Rows.Add(6, "javascript", 15)
dt.Rows.Add(7, "XSLT", 50)
Dim strleadDetails As String = String.Empty
For i As Integer = 0 To dt.Rows.Count - 1
Dim j As Integer = Convert.ToInt32(dt.Rows(i)(2).ToString())
If j <= 10 Then
strleadDetails += "<a href=javascript:void(0) class=TagSize1>" + dt.Rows(i)(1) + "</a>"
ElseIf j > 10 AndAlso j <= 20 Then
strleadDetails += "<a href=javascript:void(0) class=TagSize2>" + dt.Rows(i)(1) + "</a>"
ElseIf j > 20 AndAlso j <= 50 Then
strleadDetails += "<a href=javascript:void(0) class=TagSize3>" + dt.Rows(i)(1) + "</a>"
ElseIf j > 50 AndAlso j <= 100 Then
strleadDetails += "<a href=javascript:void(0) class=TagSize4>" + dt.Rows(i)(1) + "</a>"
End If
Next
Return strleadDetails
End Function
End Class
Demo



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2 comments :

sunil said...

sir i want to know how keep submenu open when page change in jquery.

Rakesh Raju said...

Good one

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