通过“ request.querystring”从包含的html文件中检索参数

Question

Well, I have a built registration form in (navBar.html) and im including this .html to every page in my website (header of the site). code of the form:

<form method="get" action="../RegisterDetails.aspx" id="registerForm" onsubmit="return validateRegister()">
        <h3>Register Form</h3>
        <hr /><br />
        <label id="fnameLabel">First Name: <span>*</span><label id="hiddenfname" class="h-hidden-label">Enter First Name Please</label></label>
        <br />
        <input type="text" id="fname" placeholder="First Name" /><br />
        <br />
        <label id="lnameLabel">Last Name: <span>*</span><label id="hiddenlname" class="h-hidden-label">Enter Last Name Please</label></label>
        <br />
        <input type="text" id="lname" placeholder="Last Name" /><br />
        <br />
        <input type="submit" id="registerSubmit" value="Send" />
        <input type="button" id="cancel" value="Cancel" />
        <br />
    </form>

the form is ok. It have working .js file and .css file. But when i use

<!-- #include file="Adders/navBar.html" -->

In the Home page and register then move to "RegisterDetails.aspx", I'm retrieving the parameters via request.querystring :

string fname = Request.QueryString["fname"];
string lname = Request.QueryString["lname"];

But then I can see that "fname" and "lname" equals to: "" (blank or nothing)

Any solutions for retrieving those parameters from included file ?

Answer 1

Sometimes trapping variables from an include can be tricky. I tend to prefer server controls and then use "this.pageName.." to define exactly where the variables are coming from similar to a MasterPage. Also, you might want to consider some error handling to see exactly what is happening such as:

if(collection == null)
{
    throw new ArgumentNullException("collection");
}

Answer 2

I have a built registration form in (navBar.html) and im including this .html to every page in my website (header of the site).

First of all, it is not a good practice. We should have only one form tag in ASP.Net Web Form.

Second, you should not forward user first name and last name in query string. Mainly, user could type anything, and URL might end up invalid. Another reason is user will freak out if they see their name in URL.

One easy way to fix the issue is to create User Control , and attach OnClick server event of registerSubmit button. Then store FirstName and LastName in Session State , and retrieve those values in RegisterDetails.aspx.