How to pass multiple parameters using Querystring in asp.net?

Question

protected void btnBack_Click(object sender, EventArgs e)
{
    if (!string.IsNullOrWhiteSpace(Request.QueryString["id"]))
    {
        int id = Convert.ToInt32(Request.QueryString["id"]);
        if (custTotle == 0)
        {
            Response.Redirect(prevPage);
        }
        else
        {
            Response.Redirect("~/Pages/Product.aspx?id=" + id + "Customize=" + custTotle);
        }
    }

}

In this I want to pass two different values to the page but it is not redirecting and I get the error

"Input string was not in a correct format."

at id = Convert.ToInt32(Request.QueryString["id"]);

Any suggestion?

Possible duplicate of How to pass multiple parameters in a querystring — Chirag
– Chirag, Commented May 16, 2017 at 7:59

Bhuban Shrestha · Accepted Answer · 2017-05-16 07:17:23Z

2

You have to separate query string key by & character

Response.Redirect("~/Pages/Product.aspx?id=" + id + "&Customize=" + custTotle);

answered May 16, 2017 at 7:17

Bhuban Shrestha

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Comments

Raz Zelinger · Accepted Answer · 2017-05-16 07:16:41Z

1

I guess your missing a "&" in the url:

Response.Redirect("~/Pages/Product.aspx?id=" + id + "&Customize=" + custTotle);

answered May 16, 2017 at 7:16

Raz Zelinger

7069 silver badges25 bronze badges

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