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passing hidden values
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Josh Soffe
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I have created a form in which I pass hidden values through the form. The
problem is that when I have Visible="false" the values do not get passed,
but when Visible="true" it works. How can I pass visible="false" text boxes
through the form?

Thank you in advance
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Goldfarb, Christopher
Josh,

You can't. By setting the TextBoxes to Visible=false, they aren't actually
being rendered (open the source HTML and you'll see). What you can do is
create good old <input type=hidden> HTML tags and fill them with data, like:

<input type=hidden name=myhidden1 value=<asp:Label id=lblhidden1
runat=server />>

Then populate lblhidden1 as needed in the page_load event, or after whatever
event is fired you need.

// Regards,
Chris

[Original message clipped]
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Goldfarb, Christopher
Josh,

Actually even better would be to use HtmlInputHidden HTMLControl....

[Original message clipped]
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Casey Chesnut
Just programatically stuff values into the statebag,
and then you dont even have to mess with a control in the presentation,
because the value will be in the __viewstate hidden feild that is already
there.

//set
string s = "hello world";
this.State.Add("userKey", s);

//get
string s2 = (string) this.State["userKey"];

casey chesnut

-----Original Message-----
From: Goldfarb, Christopher [mailto:Click here to reveal e-mail address]
Sent: Tuesday, May 01, 2001 6:53 PM
To: aspngbeta
Subject: [aspngbeta] RE: passing hidden values

Josh,

Actually even better would be to use HtmlInputHidden HTMLControl....

[Original message clipped]

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Goldfarb, Christopher
Even better. Thanks for the suggestion.

One question - is there a performance difference between casting a value to
string as opposed to using the ToString() method?

Regards,
// Chris

[Original message clipped]
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Casey Chesnut
had not tried that, but it worked as well:

string s3 = this.State["userKey"].ToString();

i tried comparing the 2 down to the 100-nanosecond level like this:

    DateTime s3Start = DateTime.Now;
    string s3 = this.State["userKey"].ToString(); //.ToString()
    //also for
    //string s2 = (string) this.State["userKey"]; //string cast
    DateTime s3End = DateTime.Now;
    long c = s3Start.Ticks;
    long d = s3End.Ticks;
    long s3Total = d - c;

ended up the start and end times were the same for both,
so i have no clue which is faster ...
and am unsure how to get a lower level granularity for timing :(
casey chesnut

-----Original Message-----
From: Goldfarb, Christopher [mailto:Click here to reveal e-mail address]
Sent: Wednesday, May 02, 2001 9:36 AM
To: aspngbeta
Subject: [aspngbeta] RE: passing hidden values

Even better. Thanks for the suggestion.

One question - is there a performance difference between casting a value to
string as opposed to using the ToString() method?

Regards,
// Chris

[Original message clipped]

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Scott Worley
if you are using the hidden text box's to pass additional values to the form
for processing, there is a abetter way in ASP.NET, use the web form State
bag, it is used like the Session and Application objects

this maintains the vairable only for the duration of the actual web page

scott worley

----- Original Message -----
From: "Goldfarb, Christopher" <Click here to reveal e-mail address>
To: "aspngbeta" <Click here to reveal e-mail address>
Sent: Tuesday, May 01, 2001 7:52 PM
Subject: [aspngbeta] RE: passing hidden values

[Original message clipped]
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Das (VIP)
Christopher,

I am having a question for you. In your statement,

[Original message clipped]

you are assigning the output of label countrol to the value of a hidden
type.
if you declare <asp:label id=l1 runat=server />
the HTML output will be some what like this

<span id=l1>this is a test</span>

so this entire string would be assigned to the hidden control myhidden1.
this is not what we wanted.
according to me, we can declare the hidden control as

<input type=hidden name=myhidden1 runat=server />

then in the one of the event, we can accees this hidden control as
myhidden1.text = "test"

Correct me, If I am wrong.

thanks,
DAS.

----- Original Message -----
From: "Goldfarb, Christopher" <Click here to reveal e-mail address>
To: "aspngbeta" <Click here to reveal e-mail address>
Sent: Tuesday, May 01, 2001 6:38 PM
Subject: [aspngbeta] RE: passing hidden values

[Original message clipped]

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System.DateTime
System.Web.UI.HtmlControls.HtmlInputHidden




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