how to take two values from single button using query string

Question

I assinged two values in button click. when the page is redirecting the 2 values will pass. But in page i don't know how to take a second value using query string..

<a href="<%: Url.Action("Index", "Test", new { planId = "500" ,validity="120"}) %>"><a>

<% var value = string.Empty;
      var value1 = string.Empty;
       if (Request.QueryString.Count > 0)
       {
           value = Request.QueryString[0];
           Session["PlanId"] = value;
       }
       else if (Request.QueryString.Count>0)
       {
           value1 = Request.QueryString[3];
           Session["Validity"] = value1;
       }%>

PlanId is taking the value. but validity is not taking the value.. Please help me how to do?

Answer 1

There is another way to solve this problem instead of using QueryString collection.

Say if you have URL like this -

<a href="@Url.Action("Test", "Model" , new { planid="RAT500" ,validity="120" })">hi<a>

Then have corresponding action like this -

public class ModelController : Controller
{
    public ActionResult Test(string planid, string validity)
    {
        return null;
    }
}

And when you click the link, your values will be there in the parameters as shown below -

And say you have other QueryStrings as shown below -

<a href="@Url.Action("Test", "Model" , new { planid="RAT500" ,validity="120", name = "rami"})">hi<a>

Then you can get other QueryString as shown below -

Answer 2

It's an else if so if the first if is true, it'll skip else if. It should be as follows:

 <% var value = string.Empty;
    var value1 = string.Empty;
    if (Request.QueryString.Count > 0)
    {
        value = Request.QueryString[0];
        Session["PlanId"] = value;
    }

    if (Request.QueryString.Count > 3)
    {
        value1 = Request.QueryString[3];
        Session["Validity"] = value1;
    } %>

Answer 3

I'm not sure what the issue is, but the second test should be checking Count > 3, not Count > 0.

Answer 4

QueryString can be indexed by names directly - would be easier to read (and avoid getting elements outside of the string):

  var planId = Request.QueryString["planId"];      
  var validity = Request.QueryString["validity"];