Custom Server Controls :: Custom Composite Control With Custom Templated Child Controls?

Mar 22, 2011

I am trying to build a custom composite control, which allows me to add custom content to each child control. It's a similar concept to what you have with a GridView and TemplateColumn. The markup used to place the control on the page would end up being something like this:

[Code]....

I have the code below, which allows me to put that markup on the page without throwing any errors, and it renders all the correct HTML, except it doesn't render the contents of the ColumnTemplate. I have replaced the Render() code with a comment because it's quite long winded and doesn't add anything important here:

[Code]....

I have tried to follow examples on MSDN and other forums but I can't make this work. I think I'm missing the code to render the contents of the template, but I don't know how to hook that up.

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Custom Server Controls :: Video Tutorial Link For Composite And Rendered Custom Server Control?

Aug 20, 2010

i am new to technology so go easy on this post according to what i read from web there are 3 type of custom server controls 1 superclass2 composite 3 renderedi found video tutorial for superclass custom server control but couldnt find video tutials for other 2.lease forward me link for composite and rendered custom server controls video tutorial

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Custom Server Controls :: Custom Tag Not Found For Control / Error: Unknown Server Tag 'custom:AjaxValidator'

Jan 3, 2011

Hope this is the correct forum for this question. I am using VWD 2010 an have a web project and get the following error upon execution:

Parser Error Message: Unknown server tag 'custom:AjaxValidator'.

My code is as follows in the .cs file:

[Code]....
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Custom Server Controls :: OnItemCommand Not Firing In Templated User Control?

Aug 11, 2010

I have a templated user control with single instance template attribute. It works great for everything except the following scenario:

[Code]....

The folder selector uses a tree view that allows people to select a folder, its FolderSelected event works perfectly and the file selector updates with the files. The file selector has a repeater that lists the files in the selected directory. It has a linkbutton for each of the files so that the user can select a file. The problem is that the ItemCommand event of the repeater doesn't fire when the file name is clicked on. The page performs the async postback like it should, but in debug, the method to handle the itemcommand event is never hit. On the same user control to select files there is a button that the user can add files to the folder. When it is clicked, the event DOES fire and the file is added and the control refreshes in the update panel, everything perfect. It seems that because the linkbutton is already in a templated control (which is in a user control, in a templated control), the event isn't firing correctly. I am confused as to why this should be a problem, especially since all the other events (even the custom ones) fire as long as they aren't in another templated control. Since the code is complicated, I didn't want to post it all here.

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Custom Server Controls :: Page Life Cycle And Custom Composite Server Control Life Cycle?

Oct 17, 2010

We are creating a composite server control. It will have few other controls. I am confused where exactly to write the code ie in which event. Is page life cycle and control life cycle follow the same event order?

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Custom Server Controls :: Composite Control - Mismatching The Result?

Nov 3, 2010

I am creating a composite control. On the selection of item in the dropdownlist, the result should be shown. But its mismatching the result. Here is the code for the control:

[Code]....

If I have a breakpoint on the selection index changed event of the dropdownlist, then on every selection it should go to the event. Problem is when I select an item which makes the "singlelineText" textbox to appear and after it I select any other item, it doesn't stop at the dropdown event instead it goes to the "CreateChildControls" method of the composite control which results in wrong data.

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Jun 17, 2010

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Mar 17, 2011

I am trying to make a PhoneNumber Control. I inherit from Composite Control. It contains 5 controls : 1 Label (Text to show before), 3 TextBoxes(area, prefix and line) and a Custom Validator. What I want to happen is the validator to validate the control is belongs to in two ways: 1. that the field is required and 2. That the COMBINED text of the 3 textboxes is 10 digits. I believe i can accomplish this with the expression ^d{10}$. Now I have it about halfway working, it will validate the control using client-side
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[code]...

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Custom Server Controls :: Composite Control And CausesValidation Not Working?

Jan 16, 2010

I have build a composite control containing a Label, TextBox and a ImageButton. The idea:

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This textbox has a build-in validation.

When the imagebutton is set, i will use this imagebutton as a trigger. This imagebutton has an onclick event. Nou my problem is the following:

When i have my textbox on a form an click a button to validate my textbox validation takes place correctly.

If my textbox has the imagebutton enabled and i click this imagebutton validation takes place.

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Custom Server Controls :: Trigger Click Event In Composite Control?

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My CompositeControl creates dinamically several RadioButtonLists according to the DataSource information. These controls are added to the Controls list and rendered in CreateChildControls event.

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Custom Server Controls :: Composite User Web Control - Properties - Best Practice

Jan 12, 2011

I would like to ask you what is the best practice for developing composite user web control with multiple controls inside from the stand point of dealing with properieties. In my situation I would like to use header menu bar with logos, buttons, java baset visible/hidden menus itc as web control. I was successfull in implementing new control in my project.

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How To Expose Child Control Style Properties In A Custom Composite WebControl

Feb 23, 2010

I am writing a custom composite WebControl and want to expose styles of child controls it encapsulates to the ASP.NET designer. The code I currently have is similar to the skeleton below (which for simplicity only has one child control).

With the code below, I can see property "ChildPanelStyle" in the designer, but when I try to modify one of the properties (e.g. CssClass) in the designer, it immediately resets itself to its default value. It looks like the designer serialization isn't happening.

What am I doing wrong?

UPDATE

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The HeaderStyle property is persisted properly by the designer, but the ChildPanelStyle property isn't.

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[code]....

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Custom Server Controls :: How To Set Default Height/Width Property Value Of Composite Control

Nov 3, 2010

How to set default Height/Width property value of Composite control

[Code]....

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Custom Server Controls :: Composite User Control Cannot Be Added To TableRow Dynamically

Jan 21, 2011

I have a composite user control consisting of three standard table cells (a legend, an image with a tool tip, and a text field control). If I add these to a TableRow in my aspx page it works fine and produces legal HTML in my source. The below works fine ...

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[Code]....

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Custom Server Controls :: Returning Dropdownlist Composite Control With Selected Item?

Feb 9, 2010

I have a composite control that returns a different control depending on a property value. The works however I can't seem to set the value of a textbox or the selected item in a dropdown list. Code does not produce error. What am i missing here??

[Code]....

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Apr 19, 2010

I have use composite custome control its contain button and textbox and gridveiw

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Feb 12, 2010

I am trying to included a rating control in a composite control that renders many different type of controls. I render the controls by overriding the rendercontents so that I can control the layout of the controls. When I try to add the rating control to the output i get a Page cannot be null error. Can someone provide me with the proper way to render a rating control from a composite control and be able to control the layout of the child controls.

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Custom Server Controls :: Composite Control Designer / In The Html View, Tags Are Not Updated?

Jan 22, 2010

I'm trying to develope a collapsible panel control with designer.

I have the following two classes:

[Code]....

and this one:

[Code]....

In fact, the designer class is a copy of a sample class in MSDN and I only tried to customize it to work for me. I'm not sure if all methods are necessary or not.

I have the following two questions:

1- When I use this contrl in design mode, I can add or delete controls to it, in the html view, tags are not updated. so when I close the page and open it again, all changes are lost.

2- I have added this control to the same asp.net project that is using this control. Isn't there any way to have this controil in tool box?

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Custom Server Controls :: Require Video Tutorial For Composite Server Control And Rendered Server Control?

Aug 20, 2010

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Custom Server Controls :: Custom Control's Children Do Not Persist Contents After Postback

Feb 25, 2011

I have created a really simple custom control to render panels into a page. The code is below. When I use my control and add any webcontrol to it, after each page postback the contents of these child controls vanishes.

I must have missed something really simple but run the example to reproduce this. Can anyone please enlighten me as to why the controls are being 'emptied' of their contents, and how I stop this occuring?

Here is the code for the control

[Code]....

And here's how I am using it in a sample page:

[Code]....

[Code]....

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Custom Server Controls :: Implementing An Interface From A Class Library In A Custom Control?

Jul 8, 2010

I'm building an n-tier application, with the web client and the class library separate. I'm also using the factory pattern of development, using interfaces to act as containers for different objects they are associated with. The problem I'm expreriencing is that I declared a public interface class in the class library and I can create an instance of it in in my aspx pages but whenever I declare it in my custom control code-side, i get an error, like so:

Error 20 The type or namespace name 'IContentMaker' could not be found (are you missing a using directive or an assembly reference?)

notge that I have inherited the class library namespace using the 'using' keyword just in case you are wondering. My code is like so:

using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using TQO_Classes ; //importing the class library project
public partial class PageContentMgr : System.Web.UI.UserControl
{
private IContentMaker _data; //this line throws the error, it works fine on aspx pages

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Custom Server Controls :: Register Tagprefix For A Custom Control That Inherits Treeview?

Jun 15, 2010

I have an ASP.net web application project written in VB. Am trying to test a cobbed-together "MyTreeview" control put together from C# code that's been converted.

I think this will come "close" to what I'm trying to do - just get a treenode to have a CSS tag and render properly.

I have an App_LocalResources directory and a file called CustomTreeNode.vb. Inside that file is the following code:

[Code]....

[Code]....

[Code]....

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Custom Server Controls :: Custom Control With Collapsible Panel Extender - Keep State?

Dec 31, 2010

I have a Custom Server Control with a Collapsible Panel Extender. I want to be able to keep the Collapsable state (open or closed) when doing a Post Back.

Here is my Custom Control's ASP code:

[Code]....

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Custom Server Controls :: Custom Checkbox Control 'checked' Property Is Not Working?

Sep 3, 2010

Iam developing a custom checkbox control deriving from the 'compositecontrol' which i need to use it for a composite control purpose.

public
class
TngCheckBox :
CompositeControl
{

i have written the required properties which are working fine except the "checked" property. here is my code for 'checked' property. i tried both the below ways (commented one and not commneted) . the problem is the 'checked' value is not setting the value at the get set part of the property.its assigning the value at the design time , but when i check and uncheck its not updating the property value.which is resulting me wrong .

[Code]....

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Custom Server Controls :: Custom Checkbox Control 'checked' Property Is Not Working ?

Oct 15, 2010

Iam developing a custom checkbox control deriving from the 'compositecontrol' which i need to use it for a composite control purpose.

public
class
TngCheckBox :
CompositeControl
{

i have written the required properties which are working fine except the "checked" property. here is my code for 'checked' property. i tried both the below ways (commented one and not commneted) . the problem is the 'checked' value is not setting the value at the get set part of the property.its assigning the value at the design time , but when i check and uncheck its not updating the property value.which is resulting me wrong .

[Code]....

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