Tuesday, 14 May 2013

binding Hyperlink control in Datalist

binding Hyperlink control in Datalist
http://dotprogramming.blogspot.in/2013/04/how-to-bind-hyperlink-control-in.html


Follow some steps for binding Hyperlink control in Datalist

Step-1Create a DataBase Table with  following fields.


Step-2: Fill this field with following values 

DepartmentID           Name                 Description
1                                  IT                     This is first department Name
2                                  CS                    This is Second Department Name


Step-3 : Create Procedure for retrieving values.

Database.mdf-->Stored Procedures -->Right click -->Add new Stored Procedure

CREATE PROCEDURE GetDepartments
AS
SELECT DepartmentID ,Name ,Description From [Table] ;

RETURN 0

Step-4: Take  a webform in your project name as "Departmentlist.aspx"
Step-5:  Paste this code into your Department.aspx





<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Departmentlist.aspx.cs" Inherits="Departmentlist" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:DataList ID="DataList1" runat="server">
            <HeaderTemplate>
                Choose a Department
            </HeaderTemplate>
            <ItemTemplate>
                <asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl ='<%#Link .ToDepartment (Eval ("DepartmentID").ToString ()) %>'
                  Text ='<%# HttpUtility .HtmlEncode (Eval ("Name").ToString ()) %>' ToolTip ='<%# HttpUtility .HtmlEncode (Eval ("Description").ToString ()) %>'   >

                </asp:HyperLink>
            </ItemTemplate>
        </asp:DataList>
    <div>
    
    </div>
    </form>
</body>
</html>

Step-6Paste this code into your codebehind file


using System;
using System.Data.SqlClient;
using System.Data;


public partial class Departmentlist : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection();
        con.ConnectionString = @"Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True";
            con.Open ();
        SqlCommand cmd=new SqlCommand ();
        cmd.CommandText ="GetDepartments";
        cmd.CommandType =CommandType .StoredProcedure ;
        cmd.Connection =con;
        DataSet ds = new DataSet();
        SqlDataAdapter da = new SqlDataAdapter(cmd);
        da.Fill(ds, "Department");
        DataList1.DataSource = ds;
        DataList1.DataBind();



    }
}

Step-7 Make a Link class for absolute url


using System;
using System.Web;

/// <summary>
/// Summary description for Link
/// </summary>
public class Link
{
    public static string BuildAbsolute(string relativeuri)
    {
        // get current uri
        Uri uri = HttpContext.Current.Request.Url;
        // build absolute path
        string app = HttpContext.Current.Request.ApplicationPath;
        if (!app.EndsWith("/"))
               
            app += "/";
        relativeuri = relativeuri.TrimStart('/');
        // return the absolute path
        return HttpUtility .UrlPathEncode (String .Format ("http://{0}:{1}{2}",uri .Host ,uri.Port ,app ));

 

    }
    public static string ToDepartment(string departmentId, string page)
    {
        if (page == "1")
     
            return BuildAbsolute(string.Format("catalog.aspx?DepartmentID={0}", departmentId));
        else
            return BuildAbsolute (string .Format ("catalog.aspx?DepartmentID={0}&Page={1}",departmentId,page ));
           

    }
    //generate a department url for the first page
    public static string ToDepartment(string departmentId)
    {
        return ToDepartment(departmentId, "1");
    }

 
}

Out Put 

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