Explain how to pass a querystring from an .asp page to aspx page.
Consider the following URL:http://localhost/form.aspx?param1=career¶m2=ride
- In the above link, the html addresses use QueryString property to pass values between pages.
From the above URL the information obtained is:- The 'form.aspx' is the destination page for your browser.
- The 'Param1' is the first parameter, the value of which is set to career.
- The 'Param2' is the second parameter, the value of which is set to ride
- The '?' marks the beginning of the QueryString and '&' is used as a separator between parameters.
Example:private void formButtonSubmit_Click(object sender, System.EventArgs e)
{
Response.Redirect("form.aspx?Param1=" +
this.formTextfieldParam1.Text + "&Param2=" +
this. formTextfieldParam2.Text);
}
- In the above example, is a submit button event handler and it sends the values of the query string to the second page.
The following code demonstrates how to retrieve these values on the second page:private void Page_Load(object sender, System.EventArgs e)
{
this.form2TextField1.Text = Request.QueryString["Param1"];
this. form2TextField2.Text = Request.QueryString["Param2"];
}
You can also use the following method to retrieve the parameters in the string:for (int i =0;i < Request.QueryString.Count;i++)
{
Response.Write(Request.QueryString[i]);
}
