First time building ASP.NET controls

news.microsoft.com · Oct 17, 2003

Hello there,
I need to add specific functionality to an Infragistics TreeView control.
So I decided to inherit from create the Infragistics control and create my
own one.

Please tell me what I am doing wrong.
1) First, you add to a new page your Infragistics control and then make the
changes you want to mimic your expected behaviour.
2) Second, you rename the new page to *.ASCX
3) Third, you rename the <%@ Page ... to <% @Control...
4) Fourth, you add a ASPX page to test the new control.

5) Fifth, and this is where I get lost, you drop the newly created component
on your ASPX form

Well, here is my problem.
1) When droppping the control the ASPX form, Visually at design time, it
does not display appear as on the ASCX.
2) When I right click on my control, it does not show the Infragistics
PopupMenu.
3) On the CodeBehind, I do not get a variable reference to my control.

Filippo.

Here is the code of my Control.
==========================
<%@ Register TagPrefix="ignav"
Namespace="Infragistics.WebUI.UltraWebNavigator"
Assembly="Infragistics.WebUI.UltraWebNavigator.v2" %>
<%@ Control Language="c#" AutoEventWireup="false"
Codebehind="cmTree.ascx.cs" Inherits="cmTree.cmTree"
TargetSchema="http://schemas.microsoft.com/intellisense/ie5"%>
<ignav:ultrawebtree id="trvMain" runat="server" BackColor="#F1F1F1"
ForeColor="#102B46" Height="247px" Width="224px" FileFlags="StylesOnly"
Cursor="hand" Font-Size="11px" Font-Names="Verdana" Indentation="15"
ExpandImage="plus.gif" CollapseImage="minus.gif"
JavaScriptFilename="/ig_scripts2/ig_webtree2.js"
ImageDirectory="/ig_Images2/" WebTreeTarget="ClassicTree"
HoverClass="HoverClass">
<Styles>
<ignav:Style Font-Size="11px" Font-Names="Verdana" Font-Bold="True"
ForeColor="#102B46" CssClass="DefaultItemClass"></ignav:Style>
<ignav:Style Font-Size="11px" Font-Names="Verdana" ForeColor="#102B46"
CssClass="TreeClass"></ignav:Style>
<ignav:Style Font-Size="11px" Font-Names="Verdana" Font-Bold="True"
ForeColor="#FF6600" CssClass="HoverClass"></ignav:Style>
<ignav:Style Font-Size="11px" Font-Names="Verdana" ForeColor="#FF6600"
CssClass="HoverSubClass"></ignav:Style>
</Styles>
<Nodes>
<ignav:Node TagString="" Expanded="True" Text="1 - ONE" HiliteClass=""
CssClass="">
<Style Font-Bold="True" ForeColor="#FF6600">
</Style>
</ignav:Node>
<ignav:Node TagString="" Text="2 - TWO" HiliteClass="" CssClass="">
<Style Font-Bold="True">
</Style>
</ignav:Node>
</Nodes>
<Levels>
<ignav:Level LevelHoverClass="" LevelHiliteClass="" LevelClass=""
Index="0"></ignav:Level>
<ignav:Level LevelHoverClass="HoverSubClass" LevelClass="TreeClass"
Index="1"></ignav:Level>
</Levels>
</ignav:ultrawebtree>
==========================

AND THIS IS WHAT APPEARS ON MY TEST FORM
==========================
<%@ Page language="c#" Codebehind="WebForm2.aspx.cs" AutoEventWireup="false"
Inherits="cmTree.WebForm2" %>
<%@ Register TagPrefix="uc1" TagName="cmTree" Src="cmTree.ascx" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm2</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema"
content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="WebForm2" method="post" runat="server">
<uc1:cmTree id="CmTree1" runat="server"></uc1:cmTree>
</form>
</body>
</HTML>
==========================

BUT LIKE I SAID, I GET NOT REFERENCE ON MY CODE BEHIND CS FILE.

?????

Alvin Bruney · Oct 17, 2003

this is not an infragistics support site. if you paid for the control, they
offer technical support on their website.

Filippo Pandiani · Oct 17, 2003

Thanks for your update,
I was simply looking to learn how to write a Custom Control.

Would it make a difference if the control I inherit from is a VS control?

Filippo.

Alvin Bruney · Oct 20, 2003

Yup, it makes a big difference. How does infragistics control come into the
picture? Are you wanting to build a control from infragistics template? or
MS control?

Filippo Pandiani · Oct 23, 2003

Maybe it's me,
....but I don't see the difference between starting from a MS control or from
an Infragistics control.

My ideal scenario is to have my TreeView control, inherited from
Infragistics with some code on the Page Load of the control itself. The
Control should allow me to add nodes at design time, via the standard
Infragistics popupmenu options.

F.

Alvin Bruney · Oct 25, 2003

There is a big difference. infragistics code are wrappers around stale COM
technology. .NET controls a pure bred. If the is not a big deal for you,
then it shouldn't matter, otherwise it will

Tim Hitchings \(Infragistics\) · Oct 27, 2003

Alvin, Infragistics .NET controls are written in C#.
They are not wrappers around COM.

Fillipo, please consider using the Infragistics newsgroups here:
http://www.infragistics.com/support/newsgroups.asp

Alvin Bruney · Oct 27, 2003

I apologize if I got this wrong. I was taught this in a tech ed class last
week.

You are saying that infragistics does not wrap COM objects, whether they be
for the chart products or otherwise?
Thanks for the correction.

Filippo Pandiani · Oct 28, 2003

Dear Tim,
The reason why I am posting this entry here is because I already posted the
same entry on the Infragistics long time ago, and got no answer from your
team or from other Infragsitics users.

Thanks,
Filippo.

Filippo Pandiani · Oct 28, 2003

....and BTW,
They are wonderful components to work with.

F.

Filippo Pandiani · Oct 28, 2003

OK,
So... what shall I do ??

F.

Filippo Pandiani said:
Maybe it's me,
...but I don't see the difference between starting from a MS control or from
an Infragistics control.

My ideal scenario is to have my TreeView control, inherited from
Infragistics with some code on the Page Load of the control itself. The
Control should allow me to add nodes at design time, via the standard
Infragistics popupmenu options.

F.

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First time building ASP.NET controls

news.microsoft.com

Alvin Bruney

Filippo Pandiani

Alvin Bruney

Filippo Pandiani

Alvin Bruney

Tim Hitchings \(Infragistics\)

Alvin Bruney

Filippo Pandiani

Filippo Pandiani

Filippo Pandiani

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