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aspx_beginners thread: include custom control dynamically
Message #1 by "Jason Pluis" <Jason.Pluis@a...> on Fri, 08 Nov 2002 12:48:28 +1100
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Does anyone know how to include a custom control dynamically?
I have the following control that I have inserted into the aspx body:
<html>
<form runat="server">
<mine:myCustomControl id="obj01" runat="server" height="40%"
Text="<p>content</p>"></mine:myCustomControl>
</form>
...
But rather than calling it from the aspx body I need to be able to call
it from a function, so i can create several instances of the control if
I need to, each one with different id and Text attribute values.
So I would like something like:
public void displayEditor() {
//for each chunk of content create an id and get the text, then
Response.Write(<mine:myCustomControl id=\"" + theId + "\"
runat=\"server\" height=\"40%\" Text=\"" + theContent +
"\"></mine:myCustomControl>);
}
then in the html:
<html>
<form runat="server">
<% displayEditor(); %>
</form>
...
Any ideas how to write the displayEditor function so it actually
works?
Thanks in advance.
JasonP.
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Message #2 by "Ken Schaefer" <ken@a...> on Fri, 8 Nov 2002 15:27:16 +1100
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You can use LoadControl() which takes the path to the ascx file. Something
like:
<script>
Dim ctlMyControl as Control
ctlMyControl = LoadControl("myControl.ascx")
plhMyPlaceholder.Controls.Add(ctlMyControl)
</script>
<asp:placeholder id="plhMyPlaceholder" runat="server" />
-or-
Look in the IBuySpy sample (www.ibuyspy.com), which uses controls
extensively
Cheers
Ken
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
From: "Jason Pluis" <Jason.Pluis@a...>
Subject: [aspx_beginners] include custom control dynamically
: Does anyone know how to include a custom control dynamically?
:
: I have the following control that I have inserted into the aspx body:
:
: <html>
: <form runat="server">
: <mine:myCustomControl id="obj01" runat="server" height="40%"
: Text="<p>content</p>"></mine:myCustomControl>
: </form>
: ...
:
: But rather than calling it from the aspx body I need to be able to call
: it from a function, so i can create several instances of the control if
: I need to, each one with different id and Text attribute values.
:
: So I would like something like:
:
: public void displayEditor() {
: //for each chunk of content create an id and get the text, then
: Response.Write(<mine:myCustomControl id=\"" + theId + "\"
: runat=\"server\" height=\"40%\" Text=\"" + theContent +
: "\"></mine:myCustomControl>);
: }
:
: then in the html:
: <html>
: <form runat="server">
: <% displayEditor(); %>
: </form>
: ...
:
:
: Any ideas how to write the displayEditor function so it actually
: works?
:
: Thanks in advance.
: JasonP.
Message #3 by "Jason Pluis" <jason.pluis@a...> on Fri, 8 Nov 2002 05:35:18
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Ken,
Thanks Ken, that has got the ball rolling. My code is semi-working now :-)
My problem now is thatI need to be able to adjust some of the attributes
of the customControl before adding them: (the Id and the Content)
I get this error:
Compiler Error Message: CS0117: 'System.Web.UI.Control' does not contain a
definition for 'id'
when I run the following code. How do I access the attributes of
dynamically added *user* control??
public void displayEditor( string Id, string Content, string Type, string
Caption) {
//do some stuff here to display the editor...
Control thisControl;
thisControl = LoadControl("editor.ascx");
thisControl.id = Id; <__???
thisControl.Text = Content; <__???
myPlaceHolder.Controls.Add(thisControl);
}
Cheers,
JasonP.
> You can use LoadControl() which takes the path to the ascx file.
Something
like:
<script>
Dim ctlMyControl as Control
ctlMyControl = LoadControl("myControl.ascx")
plhMyPlaceholder.Controls.Add(ctlMyControl)
</script>
<asp:placeholder id="plhMyPlaceholder" runat="server" />
-or-
Look in the IBuySpy sample (www.ibuyspy.com), which uses controls
extensively
Cheers
Ken
Message #4 by "Ken Schaefer" <ken@a...> on Fri, 8 Nov 2002 17:44:48 +1100
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Try:
thisControl.ID = Id;
C# is case sensitive no?
Also, since thisControl is of type Control, there is no .Text property. So,
I think you'll need to do a cast to your user control type to be able to set
the .Text property. (I'm no expert, so this could all be a real horribly
wrong!). In VB.Net you'd do:
<% @Register TagPrefix="Whatever" TagName="MyControlName"
Src="whatever.ascx" %>
<script runat="server">
CType(thisControl, MyControlName).Text = "myText"
</script>
Not sure how you do something similar in C# (let me know though!)
Cheers
Ken
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
From: "Jason Pluis" <jason.pluis@a...>
Subject: [aspx_beginners] Re: include custom control dynamically
: Thanks Ken, that has got the ball rolling. My code is semi-working now :-)
: My problem now is thatI need to be able to adjust some of the attributes
: of the customControl before adding them: (the Id and the Content)
:
: I get this error:
: Compiler Error Message: CS0117: 'System.Web.UI.Control' does not contain a
: definition for 'id'
: when I run the following code. How do I access the attributes of
: dynamically added *user* control??
:
: public void displayEditor( string Id, string Content, string Type, string
: Caption) {
: //do some stuff here to display the editor...
: Control thisControl;
: thisControl = LoadControl("editor.ascx");
: thisControl.id = Id; <__???
: thisControl.Text = Content; <__???
: myPlaceHolder.Controls.Add(thisControl);
: }
:
: Cheers,
: JasonP.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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