we are facing a page loading problem with custom controls only IE browser. but that the same page open on mozilla firefox 3.5.
we are using all the controls on the page are custom controls. I pasted on custom control code bellow, verify that is it written proper or not...
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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:
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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:
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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.
I know that how to create custom control and add custom property.
I want to create property like DataSource to my custom control.
I have to use inline code for an aspx page and I need to use a custom server control that is defined in the same aspx page but the control does not get processed as a server control. it gets returned as is as static html tag.
View 3 RepliesI have some (probably very basic) questions about developing custom controls. I am wanting to derive a set of button controls, and the first one I have started on is a "DeleteButton", that has a additional property (DeleteConfirmationText) that is built into the OnClientClick attribute. To get that added, I overrode the Render method as follows:
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This all works well. Now, I will add some logic to make sure that there is some text in the DeleteConfirmationText property, but that isn't the intent of my question.
What I am also wanting to do is to override some of the default property values, so I added that to the default constructor:
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Now, in the designer in VS2008, and I look at the properties for the control, there isn't a default value shown in the "Properties" section, and the Causesvalidation still shows the underlying classes default value of "True". As well, in design mode, where the GridView control that containse my DeleteButton control would be displayed, there is an error box "There was an error rendering the control. 'Are you certain you want to delete this attorney?' cound not be set on property 'DeleteConfirmationText'. Here's the markup where I am defining the deletebutton control:
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What am I doing wrong?
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:
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I have a site using eight (so far) custom web user controls and two of them have started misbehaving in design view. When designing the control itself some (in one control) or all (in the other) regular controls (labels, text boxes, etc.) disappear from the design view surface. They can still be seen in the source view and if the control is hosted on a regular .aspx page the control displays properly. The code window recognizes all controls in the objects dropdown list and I can write appropriate code. The controls run properly on their hosted pages.
If I switch to Split view and select controls in the source view panel a very small area od the design surface becomes selected (like one pixel for any of us who remember programming old DOS applications with 80-column screens) but no controls can be seen.
In short, the controls work in every respect except that I cannot see all or part of the design surface in Design view when editing the controls directly.
I've double-tripple checked the source code for anything that may be causing this and just don't see anything. (The controls aren't that complicated.)
i registered an image in AssemblyInfo.cs like this:
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now i want to initialize that image in css file for background-image but it dose'nt work.
my css file is:
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i also try with this :
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I have a custom server control inheriting from CompositeControl. It consists of two RadioButtonlist controls that are rendered side by side in an html table. The number of ListItems in each RadioButtonList is not known until runtime. Depending on how many items each list contains, the RepeatColumns property of each list is set differently. To do this in the handler for the ItemDataBound event I need to get the count of ListItems in each RadioButtonList. How do I expose the Items.Count property of each internal RadioButtonList as a top-level property? I tried using a getter to return the count but this generates a compile-time error to the effect that the count cannot be assigned to--even though I have not created a setter.
Similarly, in the handler for the Submit event, I need to get the ClientID of each internal RadioButtonList to pass to a method that checks for data changes. How do I expose the ClientID of each component RadioButtonList as a top-level property?
I can of course index the Controls collection of the composite control to access the child control and read its properties--but that defeats the whole point of making a complex, independent custom server control.
I have custom gridview that inherit from the regular gridview.
On of the features is that is has a built in page size dropdown in an extra header row.
Another feature is that this extra header row has a place holder where aditional controls can be added but here is where I have some problems.
When I add a control that is created outside the gridview to the gridviews builtin placeholder and tries to do anything that performs a postback the gridview dissepears, but appears again on a new post back.
Here is the code for the gridview:
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And this is the way it is used in a usercontrol on page, the gridview is called gvList and the control that I try to add to its placeholder is the phrExtraHeaderControls:
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What can be wrong, is the viewstate messed up in the postback so that the gridview can't be rendered?
I am writing a custom control by inheriting "Control".
I wany the custom control to have multiple control nested inside it i.e. my custom control can have other controls in it.
How can I do it, would I have to implement any interface or what.
At the end, I want the code to look something like this.
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created a Custom Textbox Control that is intended to be a "masked date" textbox, so that I can handle different ways a user might enter in a date and make it work no matter what.I did this by creating a custom control with 3 separate Textboxes one for month,one for day one for year,then do some handling for different things that could be entered and it would all work.
The problem I am having is,when I add this control to the page,if I do an alert to check the Text value of the custom control it just gives me "[ServerControl1]" even if I enter in a date.
I tried doing an AutoPostback after entering so that it would refesh the Viewstate to have the values of the textboxes but the control doesnt seem to actually postback, even though I have it enabled.accessing the Textbox value after someoen
has entered a date?first custom control I have created and have been using google.
My Server Control Code is as follows:
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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
View 1 RepliesI have a scenario where I've created a custom control that connects to a database and gets records from the last X number of months where X is any desired number. I use a "MinDate" parameter to determine how far back to look.
When I add my control to my page, how can I set the "MinDate" parameter to something like "DateTime.Today.AddMonths(-3)"? I've tried:
MinDate="<%= DateTime.Today.AddMonths(-3) %>"
I created one textbox custom control and i opened new asp.net web project. now i register my custom control in my web project.
Afterthat i can't able to access my custom control textbox and its not showing in my web project(not web application).
its working in my local machine, the same way i upload all the files to my remote server its not working.
Let me know , what mistake i have done and what way can i access my textbox controls in my web project.
through webproject how to get the custom controls values.
I'm attempting to create a custom control that extends the Table class. Inside of the table will be rendered a number of different controls based on a specified identifying property. On some of these controls, however, I need to specify validation for data types and requirement.To me, the most logical way of doing so is to add validators to the table and set their appropriate properties to specify which controls to validate. In doing so, however, I've discovered that none of the validators added will even render on the page in which the control is added. So is this a valid construct?Here's an example of what I mean:
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I am creating custom server control. I have two classes in project. One is main class that render control and another will be used to render content based on condition.I just want to know how to render content from other classes in main class.For example. This isjust an example.My main class code
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My TopLeftPane class
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My page code on page load event
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When I run the page, Header title always getting null. This is a just sample code. I will have more than 20 classes so I dont want to write a code in main class to render whole control.I hope all of you understand my problem.
Case : a templatefield Text Box created by class TemplateHandler and added to the composite
control Grid .how to bind it to the DataSource Object of the Grid Class ?
I have a custom radiobutton and it renders fine but loses state after postback.
How can it be modified?
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I've been trying to get a custom validator component working that ensures at least one checkbox from a checkboxlist has been checked. I've been used some code I found on dotnetjunkies.com but the client-side validation didn't work. I've been attempting to modify it to get the client-side javascript validation to work with no luck. Basically, I compile the below code into a DLL and add it to my bin folder.
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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
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And here's how I am using it in a sample page:
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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
How insert a drop list property into a custom webcontrol? This a drop list property is show all textbox control on usercontrol or webpage.
View 3 Replies 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:
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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:
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