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ASP .Net Finding a control on the parent window

Posted on 2004-04-07
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Last Modified: 2007-12-19
Using Javascript in ASP .net I am attempting to alter the value of a control on the page that called the current page.  The current page is a dialog window.

I am finding the window this way
var d2 = window.parent.document.all;

and referring to the control this way
d2.hidDefaultServiceDetail

For some reason the above returns undefined.  The control definitely exists and I have definitely spelt it correctly (I copied and pasted the name).  I also can't access any other controls.  The control is a text box and is not in a container control of any kind.

Any Ideas?

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Question by:JackieLee
16 Comments
 
LVL 7

Expert Comment

by:dante469
ID: 10774224
Please remember JavaScript is case sensitive

hidDefaultServiceDetail is not same as HIDDEFAULTSERVICEDetail


If the control is in a form...  Since it is .Net it most probably is then ref like this...

Example assumes the Form the control is contained within is called      Form1   Please update to the name of your FORM if different...

var d2 = window.parent.document.all;
d2.Form1.hidDefaultServiceDetail;   'Where Form1 is the name of the form the control is contained within...

Have Fun,
Dante
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Author Comment

by:JackieLee
ID: 10774383
d2.SupplierSearch is undefined
0
 
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Author Comment

by:JackieLee
ID: 10774396
The window is a web form.  It's filename is SupplierSearch.aspx
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LVL 7

Expert Comment

by:culshaja
ID: 10774532
Be careful with using document.all and document.Form1 in JavaScript to get access to a form element. If you are accessing a control that is within a UseControl or a repeater it will be prefixed with containercontrol_ and this will cause numerous problems. I would use .getElementByID if you know that you can rely on IE as your target browser. It gets past a lot of problems.

James :-)
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Author Comment

by:JackieLee
ID: 10774729
How would one go about using .getElementByID  I can't find it.
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Expert Comment

by:dante469
ID: 10774742
JackieLee,

Thanks for the reply...  I may have been ambiguous...

Not the webform name (SupplierSearch.aspx) but the <form> name of the form on that .aspx page ie...

<body>
      <form id="Form1" method="post" runat="server" onsubmit="return(chkuidpwd());">
            <asp:TextBox id="uid" runat="server"></asp:TextBox><BR>
            <asp:TextBox id="pwd" runat="server"></asp:TextBox></P>
            <asp:Button id="aspSubmit" runat="server" Text="aspSubmit" ></asp:Button>
      </form>
</body>

In the above the form is called Form1

Have Fun,
Dante
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LVL 1

Author Comment

by:JackieLee
ID: 10774834
OK.  My form id is actually Form1.  I tried the following:
d2.Form1.hidDefaultServiceDetail
It is still undefined
0
 
LVL 1

Author Comment

by:JackieLee
ID: 10774908
I just noticed that the current form is also called Form1 so I changed it's id to Form2.  Now I get this error when I execute d2.Form1.hidDefaultServiceDetail

'd2.Form1.hidDefaultServiceDetail' is null or not an object
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LVL 1

Author Comment

by:JackieLee
ID: 10774928
window.parent.document.all seems to reference the current window and not the parent window.  Is this because it's a dialog window?
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LVL 22

Expert Comment

by:_TAD_
ID: 10774937
what about something like this (using code behind)

in this example I am looking for a textbox

                  foreach(Control ctrl in this.Controls)
                        if(ctrl.GetType()==typeof(TextBox))
                              if (((TextBox)ctrl).ID == "ID")
                                    --Found It
0
 
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Expert Comment

by:dante469
ID: 10775053
simply ref as

window.parent.document.Form1.hidDefaultServiceDetail;

or

var parent = window.parent.document;
parent.Form1.hidDefaultServiceDetail;


Have Fun,
dante
0
 
LVL 1

Author Comment

by:JackieLee
ID: 10775144
Dante,

That doesn't work because:
window.parent.document.Form1 is undefined

The question is Why does window.parent.document refer to the current form and not the parent form?
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Expert Comment

by:dante469
ID: 10775248
Sorry...  Assumed window.parent was working correctly....

How did you open the child...  Is it a frameset???

Have Fun,
Dante
0
 
LVL 7

Expert Comment

by:dante469
ID: 10775324
JackieLee,

Not sure how you are opening child however in anticipation of your answer;

showModelessDialog - allows interactivity between parent and child,

showModalDialog -   prevents the parent from directly interacting with the child, the child has the focus, hence the Modal name.

Have Fun,
Dante.
0
 
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Author Comment

by:JackieLee
ID: 10781645
It's a modal dialog.  I need to be able to parse one piece of information back to the parent.  surely it's possible somehow.
0
 
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Accepted Solution

by:
billy21 earned 400 total points
ID: 10783152
Hi Jackie,

Try this:

var d = window.dialogArguments.document.all;

referencing this way of course:
d.hidDefaultServiceDetail.value = whatever
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