Question

Using C# & Java Script

I have the link like this

"http://localhost/Server/Vehicle/Vehicle.aspx?appid=5", when i use this link the page is opening… But i want to get this appid value, then pass this appid value to another link

In the above link appid value is 5

For Example

Link1 http://localhost/Server/Vehicle/Vehicle.aspx?appid=5

In link2 the value 5 should display like this “http://localhost/Server/Vehicle/car.aspx?appid=5“

Tried Code

<a href="car.aspx?param=document.getElementById('appid').value">Entry</a>

But in another page the link is displaying like this

http://localhost/Server/Vehicle/car.aspx?param=document.getElementById('appid').value

How to get that appid value. I want to pass this value to another link

Need code Help

Answer 1

Access the Request.QueryString as follows to retrieve the value of the appid query variable:

string appid = Request.QueryString["appid"];

Update:

The JavaScript snippet won’t be executed in the href attribute of a link (it’s recognized as a normal string, and won’t be parsed as JavaScript code).

With the following link a user will be successfully directed to your desired URL:

<a href="#" onclick="javascript:window.location.href = 'car.aspx?param=' + document.getElementById('appid').value; return false;">Entry</a>

Side note: the value property works only for HTML tags that have defined an eponymous attribute. One such tag would be the input tag. The div tag instead doesn’t have a value attribute defined, and therefore document.getElementById('appid').value would fail; use innerHTML instead in that case.