- This is a Client-side State Management Technology, i.e. the data we want to manage; it is going to store in the client machine.
- In this technique, we can maintain the value/data on the same page or another page through the URL.
www.mypalmbook.com?id=1001
4.
If we want to carry more than one data in the
query string then we have to concatenate the next data with “&” (ampersand) symbol.
www.mypalmbook.com?id=1001
& name=Biswarekha
Example:-
>>In QuerystringDemo.aspx
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body style="background-color:azure">
<form id="form1" runat="server">
<div>
Id: <asp:Label ID="lblId" runat="server" Text="1002"></asp:Label>
<br />
Name: <asp:TextBox ID="txtName" runat="server"></asp:TextBox>
<br />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Next" />
<asp:HyperLink ID="hlSend" runat="server" NavigateUrl="~/QuerystringRedirectionPage.aspx?id=1001&name=Rupa" Text="Send"/>
</div>
</form>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body style="background-color:azure">
<form id="form1" runat="server">
<div>
Id: <asp:Label ID="lblId" runat="server" Text="1002"></asp:Label>
<br />
Name: <asp:TextBox ID="txtName" runat="server"></asp:TextBox>
<br />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Next" />
<asp:HyperLink ID="hlSend" runat="server" NavigateUrl="~/QuerystringRedirectionPage.aspx?id=1001&name=Rupa" Text="Send"/>
</div>
</form>
</body>
</html>
>>In QuerystringDemo.aspx.cs
using System;
namespace MyPalmBookWeb
{
public partial class QuerystringDemo : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
//Response.Redirect("QuerystringRedirectionPage.aspx?id="+lblId.Text+"&name="+txtName.Text);
Server.Transfer("QuerystringRedirectionPage.aspx?id=" + lblId.Text + "&name=" + txtName.Text);
}
}
}
>>In QuerystringRedirectionPage.aspx
-- nothing to design
>>In QuerystringRedirectionPage.aspx.cs
using System;
namespace MyPalmBookWeb
{
public partial class QuerystringRedirectionPage : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write("Hello, " + Request.QueryString["name"]+" Welcome to our Company.<br/>");
Response.Write("you are assigned with Id: "+Request.QueryString["id"]);
}
}
}
Draw Backs:-
- This is not a secure method to transfer the Sensitive data, because data will be visible to the user on the address bar of the browser.
- Querystring cannot carry more volume of data.
