Send data through the QueryString with ASP.NET

Question

I want to send a string to another page named Reply.aspx using the QueryString.

I wrote this code on first page that must send the text to Reply.aspx:

protected void FReplybtn_Click(object sender, EventArgs e)
{
    String s = "Reply.aspx?";
    s += "Subject=" + FSubjectlbl.Text.ToString();
    Response.Redirect(s);
}

I wrote this code on the Reply.aspx page:

RSubjectlbl.Text += Request.QueryString["Subject"];

But this approach isn't working correctly and doesn't show the text.

What should I do to solve this?

Thanks

that code should work... What part goes wrong? Does the redirect occur correctly? — ullmark, Sep 27 '09 at 16:30
Does it show anything? You could htmlencode it so its a valid querystring. Or you could cache it in the session object if its on the same site. — Ralf de Kleine, Sep 27 '09 at 16:31
I don't know, this page is in the folder whit name ADMIN and now I change code but doesn't work yet . String s = "~ADMIN/Reply.aspx?"; s += "Subject=" + FSubjectlbl.Text; Response.Redirect(s); — mohammad reza, Sep 27 '09 at 16:38
Is it possible that FSubjectlbl.Text contains invalid characters (spaces, ampersands, etc.) that need to be sanitized first? Please post the value of "s" when the redirect occurs. Thanks! — Mark Carpenter, Sep 27 '09 at 16:49

TheVillageIdiot · Answer 1 · 2009-09-27T18:08:28.527

Though your code should work fine, even if the source string has spaces etc. it should return something when you access query string, please try this also:

protected void FReplybtn_Click(object sender, EventArgs e)
{
    String s = Page.ResolveClientUrl("~/ADMIN/Reply.aspx");
    s += "?Subject=" + Server.UrlEncode(FSubjectlbl.Text.ToString());
    Response.Redirect(s);
}

EDIT:-

void Page_Load(object sender, EventArgs e)
{
    if(Request.QueryString.HasKeys())
    {
        if(!string.IsNullOrEmpty(Request.QueryString["Subject"]))
        {
            RSubjectlbl.Text += Server.UrlDecode(Request.QueryString["Subject"]);
        }
    }
}

PS:- Server.UrlEncode is also sugested in comment to this question.

score 0 · Accepted Answer · edited Nov 25 '13 at 01:53

0

this is easy :

First page :

string s = "~/ADMIN/Reply.aspx?";
s += "Subject=" + FSubjectlbl.Text;
Response.Redirect(s);

Second page :

RSubjectlbl.Text = Request.QueryString["Subject"];

edited Nov 25 '13 at 01:53

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answered Sep 27 '09 at 18:13

mohammad reza

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Send data through the QueryString with ASP.NET

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