How to refresh images
which are present in database with Web Services in Asp.Net
Note: My concept in
this code is we create a web services and with the help of this web
services we want to show all data (images,links,name) one
by one in another website
We take a web service in our Website and create a web Method………………………………………
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Data.SqlClient;
/// <summary>
/// Summary description for WebService
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using
ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class WebService : System.Web.Services.WebService {
public WebService () {
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod]
public void
RefreshImage(ref int
a, ref string
b, ref string
c, ref string
d)
{
SqlConnection con = new SqlConnection(@"Data Source=KUSH-PC\KUSH;Initial
Catalog=test;Integrated Security=True");
SqlCommand cmd = new SqlCommand("select
top 1 * from SiteImage order by NEWID()", con);
con.Open();
SqlDataReader dr =
cmd.ExecuteReader();
if (dr.HasRows)
{
dr.Read();
a =(Int32) dr[0];
b =
dr[1].ToString();
c =
dr.GetString(2);
d=
dr[3].ToString();
}
con.Close();
}
}
We take another web Site and call above Web Services ………………………….
// code for Default.aspx.…………………………………..
<%@ Page Language="C#"
AutoEventWireup="true"
CodeFile="Default.aspx.cs"
Inherits="_Default"
%>
<!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1"
runat="server">
</asp:ScriptManager>
<div>
<asp:UpdatePanel ID="UpdatePanel1"
runat="server">
<ContentTemplate>
<asp:Label ID="lblimageid"
runat="server"
Text="Label"></asp:Label>
<asp:ImageButton ID="ImageButton1"
runat="server"
Height="69px"
Width="64px"
/>
<br />
<asp:HyperLink ID="HyperLink1"
runat="server">HyperLink</asp:HyperLink>
<asp:Timer ID="Timer1" runat="server"
Interval="1000"
Enabled="true">
</asp:Timer>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
// code for Default.aspx.cs…………………………………..
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default :
System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs
e)
{
int a = 0;
string b = "";
string c = "";
string d = "";
localhost.WebService ww = new
localhost.WebService();
ww.RefreshImage(ref a,ref b, ref c, ref d);
lblimageid.Text
= a.ToString();
HyperLink1.Text
= b;
HyperLink1.NavigateUrl
= c;
HyperLink1.Target
= "_blank";
ImageButton1.ImageUrl
= "~/SiteImage/" + d;
ImageButton1.PostBackUrl
= b;
ImageButton1.ToolTip
= c;
}
}
Output: Images which are saving in our
database are show in our output one by one within a difference of one second
select top 1 * from SiteImage order by NEWID()
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