Question

if you please help me out i am trying to pass 3 different parameters in a page but i am new in asp.net C# and i don’t know the correct syntax if you please help me out

;

For one parameter like this it works:

 Response.Redirect("~/WebPage2.aspx?q=" + ListBox1.SelectedValue);

how can i write it for 3 parameters like this don’t seem to work?

Response.Redirect("~/WebPage2.aspx?q=" + ListBox1.SelectedValue+"&cr="+ListBox3.SelectedValue+"&p="+ListBox1.SelectedValue) 

thanks in advance

Answer 1

You forgot a + in your string concatenations after the cr parameter. This being said a far safer and better approach which ensures that your parameters are properly encoded is the following:

var parameters = HttpUtility.ParseQueryString(string.Empty);
parameters["q"] = ListBox1.SelectedValue;
parameters["cr"] = ListBox3.SelectedValue;
parameters["p"] = ListBox1.SelectedValue;
var url = string.Format("~/WebPage2.aspx?{0}", parameters.ToString());
Response.Redirect(url);

And of course if you are using ASP.NET MVC (as you’ve tagged your question with it) you would use:

return RedirectToAction("SomeAction", new { 
    q = ListBox1.SelectedValue,
    cr = ListBox3.SelectedValue,
    p = ListBox1.SelectedValue
});

I very sincerely hope that if you are using ASP.NET MVC then ListBox1 and ListBox2 is not what I think it is.