What is queryString in asp.net.

Hi friend, here i have explained about QueryString.

Introduction:

QueryString  is used to pass the variables content  between your HTML  page or aspx webform  context in asp.net. For Example if you collect the information like  user_name and id and you want to pass these value to another page.For this you can use QueryString.

Exmple :

 you want to show like this

http:/www.yourdomainname.com/default.aspx?username=Rahul&id=10023

for this you can write the code given below:

private void btnGO_Click(object sender, System.EventArgs e)

{

Response.Redirect(“Default.aspx?username=”+txt_username.Text+”&id=”+txt_id.Text);

}     

If you want  to retrieve these value  to another page write the code given below

private void Page_Load(object sender,System.EventArgs e)

{

txt_name.Text=Request.QueryString["username"];

Txt_id.Text=Request.QueryString["id"];

}




Advantage:

It is easy to write.

Limitations:

1.)It have a max length.If you have to send a lot information this approach doesn’t work.

2.)It is visible in your address part of your browser so you cant use it with the sensitive information.

3.)It can not be used to send & and space.