Hi, I'm trying to add Server controls on the JavaScript side, I'm using the following syntax: var oText = document.createElement("asp:Label"); div.appendChild(oText); that works when I use html controls, but doens't work with ASP controls, any idea why? ...more >>

I really, really wanted to finish this one without asking anyone for help. But I've been beating my head against this thing, and I'm getting nowhere. I wrote a tab control. I cribbed some ideas from the BlueValley one, but mostly after I'd finished the main stuff. It works just great in d...more >>

Hi There! How to handle the events of a dynamically added user control? e.g. I have following code... Dim myUserControl as Object = LoadControl("myFirstControl.ascx") myFirstControl fires LinkClicked event and I don't know how to handle that LinkClicked event from containing page. P...more >>

Hi all, I need to be able to cause the following chain of events after clicking an asp:button but I don't know how to do it. I'd really appreciate any advice on this or alternative approaches: The window in question is a popup asking the user to provide some details. The primary window i...more >>

Hello Everybody, Do we always have to use the HtmlTextWriter to create the control? Can we not use the overriden CreateChildControl to create the control? Is there any samples available? Thanks Anand ...more >>

I'm currently trying to register a block of javascript on a custom web control using the Page.RegisterClientScriptBlock functionality. I am trying to include the "<!--" in the javascript block to hide it as required by XHTML standards, but when I add these characters and attempt to register the...more >>

I have a custom control with a textbox and dropdown list. The dropdown list is hidden and acts as a data source for the textbox. When the user enters text in the textbox, an onKeyup event is fired and retrieves the first value from the dropdown list equal to that entered, and fills the text bo...more >>

Okay... maybe this has been done. I hate the Microsoft Tab and Multipage controls. So I'm building my own Tabstrip control. The style and DHTML isn't a problem. In fact, I'll post it at the end of this for those who'd like it. It's probably IE only, but that's the environment I'm working i...more >>

Hi just wondering if there is a way to remove an item from a dropdown list in code after it has been filled with data from a dataset? Also do I need to know the index of the item I want to remove or is just knowing the string value sufficient? thanks. -- Paul G Software engineer....more >>

Hi, what's the best practice of ensuring that only one instance of a (custom) control can be placed on a Web form (either at design or run time)? ~ Zarko ...more >>

How can I retrieve the Container.DataItem name in a checkbox used in a template column. During an Update, I can dynamically retrieve the value of the checkbox, but I need to retrieve the DataItem also. <asp:TemplateColumn> <ItemTemplate> <asp:checkbox id="Checkbox7" runat="server" C...more >>

I'm writing a custom treeview control. The treeview is a htmltable with the nodes and branches, The htmltable is located in a div to make it scrollable when it is larger than a certain pixel size. All this is nested in my custom control. My problem is that the viewstate becomes really large wh...more >>

Hi, My Control (inherits from System.Web.UI.Control) has the Enabled property that enabled a button inside of my control. The problem is that in the page that has the control has a button ("Edit") to set the Enabled property to true and when is pressed first load and build the control, and the...more >>

I have created a Web Custom Control that inherits from WebControls.ListBox but can't get it to retain the selectedIndex after a postback. As a test I created a very simple version of the control with no additional code. I just inherited from the exisiting ListBox class and put the control on a...more >>

I have a made a custom control that requires postback. The control relies on the __dopostback() function to be in place in order for it to do the postback. I actually call this function directly when I need my control to do a postback using javascript. In my PageLoad event for the control, I...more >>

I am creating a bunch of custom controls that will be used by user to display Personalized data. The page that will host the controls will contain anywhere from 6 custom controls to 2 custom control. I want the page to handle all exceptions coming from the custom controls. What is the best...more >>

Right now I have a web control that serves as a header for all of our intranet sites. The assembly in in the GAC but it has images (jpg) that are located in a directory on the server. Is there a way to compile these images into the assembly? Thanks...more >>

In VS.NET, when you hit . and get a list of possible properties and methods, a tooltip comes up that gives you the footprint of each method, and often a description of what the method is for. When I create my own control and add properties and methods, the tooltip appears the same way. But th...more >>

Hey all, Is there a way of limiting the number of instances of a server control that the user can put on a form? I'm writing an interfaceless server control, and I want to make it impossible for the user to put more than one of them on a page. Is that possible? If so, how? Thanks, Li...more >>

Hello I've created a webcontrol that uses some javascript. Currently i've embbed the javascript into the assembly and it's added to the webpage if necessary.. The disadvantage of this approach is that the client can't cache the script because it's embedded into the page instead of refere...more >>

Hi, I have to show data in grid like manner in the combobox. Please give me ne idea to create multicolumn comboBox. Thanx. ...more >>

Hi, I have created a composite control which function "perfectly" in my web page (Framework1.1). The problem is: When I try to use it on a datagrid, I'm not able to set properties I probabily miss something. Here is snippet my Control Code: <DefaultProperty("Value"), ToolboxData("<{0}:Pm...more >>

Hello, I have created a custom dropdownlist that is used multiple times within a single page. When trying to set the values of the controls with the page in which they are being used, they all are set to the value of the last control. I found this link: http://www.codecomments.com/archive31...more >>

How can I assign an ID to dynamically generation ListItem that I add to dynamically generated CheckBoxList or RadioButtonList? I need to identify the specific ListItem later through Request.Form when user sends back data. ...more >>

I have a weird thing going on. I think I've figured out what's causing my problem, but I can't find any way to fix it. I have a custom server control that wraps a <select> in a <div> in order to emulate a WinForms listbox. It works nicely. I have another custom server control that includes...more >>

Hi all, I need to create custom control ASP.Net, a composite control with about a dozen standard child controls. It looks like I'm going to have to hand code the creation and positioning of all the child controls. Has anybody sees a visual tool for laying out child controls in a custom cont...more >>

I am looking for some help with this problem I am experiencing. What I want to do, is extend the dataset, but include a button above it that I can click, and handle the postback of that click w/ in my custom server control code. So, my class inherits from the dataset, and has a button defi...more >>

We are getting errror when load control is added(ascx) as "Error executing child request for error.aspx" it thows an error after calling the following statement: base.OnInit(e); Thanks for any clue. Shridhar...more >>

Hi, I've developed a custom handler for my custom control that stores and serves all the JS and GIF files to the control user at run time. Question: how do I force the images to appear on the control (as those are child controls to this composite control) at design time in VS's designer? ...more >>

Hello My name is Michael Lescault; I buy notes, trust deeds and mortgages I was hoping you would be able to help me find some people or a list of mortgagees that may want to sell there notes, trust deeds or mortgages. Thank you for your help Michael Lescault 401-475-3280 mlescault91967@aol.c...more >>

I have a user control inside a aspx page and i have event handler inside the user control for the ImageClick EVent. But when i am trying to instantiate the event in the .aspx page load event it is throwing object reference set to null. Please find the sample code attached i have done please ch...more >>

Hi, My GridView has templated controls in it and I'm binding to an ObjectDataSource. The problem is it refused to bind to my grid column "ColumnName" which is also an UpdateCommand Parameter for the ObjectDataSource. It displays the following error "DataBinding: 'System.String' does not conta...more >>

I cannot find a group better devoted to this question. Can anyone recommend a source for training in ASP NET in the east / central florida area. I'm looking for an evening course in college or university or a reasonably priced private school. The only courses I can find in Orlando are 5 day cl...more >>

Dear Folks, I am developing a server control as a composite control. I need to associate some javascripts with the individual controls of the composite control. I have the javascrips in a separate .js file. how can i associate the functions in .js file with the server controls. Th...more >>

Hi, How do one set default value for objects? For simple attributes like string, one can do it like [Bindable(true), Category("Appearance"), DefaultValue("datagridstyle")] public override string CssClass { get { return base.CssClass; } set { base.Cs...more >>

We have an internal asp.net application for orders/manufacturing information. Presently we have set the META Refresh tag on the affected pages set to "120" so the client browsers refresh every two minutes so displayed data is "current". This has several drawbacks, including the annoyance o...more >>

Is there a class that will assist with taking existing aspx markup from a file and creating a sort of tree structure that will allow you to transform the html layout to code? Example aspx code: <asp:Table runat=server> <asp:TableRow> <asp:TableCell> <asp:Label id=mylabel>test</asp:La...more >>

I am creating a custom web control with a custom property editor. The custom editor is for setting a relative URL property of an item in a collection property of the control. Because the property is a collection, the UrlEditor will not work because of a known (even if not confessed) bug in all...more >>

I have a server control. It has a Layout property, a Height property, and a Width property. What happens in the Height and Width property depends on the Layout. Unfortunately, what seems to be happening is that when I run a page that has my control in it, the Height and Width properties are ...more >>

Hi there. I'm developing a custom controls. Inside this custom control, I want to put 2 controls: one textbox and one dropdownlist. I want to create a Width property for this custom control. The dropdownlist shoul have 50px. The textbox must have variable width; So, how can I set this prope...more >>

I wrote a server control. It does not run because it is looking for the assembly. I get an error messgage in the page saying: Parser Error Message: File or assembly name CustomCalendar, or one of its dependencies, was not found. Here is the Assembly Load Trace: === Pre-bind state info...more >>

Hi All, I have a requirement. I am throwing an exception from my user control I want to catch this in my container page. Is this possible? I don't want any event to be raised. PLEASE HELP ME. Thanks Prince ...more >>

Dear Folks, I am developing a Header server control. as we know the header control is always going to be at the top of the web page. is there any means to achieve something like, when i drag and drop the Header server control into my Web Page, i. It gets itself aligned to the t...more >>

Hello, i have this code: public class MyControl :System.Web.UI.Control, INamingContainer { protected override void CreateChildControls() { TextBox myTextBox = new TextBox(); myTextBox.ID = "txtMyTextBox"; this.Controls.Add(myTextBox); } } When the p...more >>

Every book and every website I've seen that talks about how to save state for child controls in a composite webcontrol says to do something like the following. But when I do it, I hit the line: Dim myState As Object() = CType(savedState, Object()) ....and I get this error: Cannot convert...more >>

How could I open a modal webform from a server control? I'm using the render sub and writer object to output script that open a webform, but it gives error object not found, it tries to open the webform from the client application directory, how could I enforce it to open the webform from my ...more >>

I have created a server control and overridden the sub Render to output JavaScript functions, the problem that if the client used two instances of my control the control generates the JavaScript functions twice which cause a lot of problems, how could I solve this problem? Ahmed ...more >>

Hi, I'm developing a Composite Control that have a <div>, inside a Table, that can be moved by the user with the limits of the table. What I want, is that when postback raised the <div> maintain the position seted by the user. Somebody know how can i do that? Thanks ...more >>

I've created the following control and placed it on a web page. When I click on 'Add' button, it should add a new item to the dropdown list, but that's not happening. Can anybody tell what's wrong with this code? public class TryControl : System.Web.UI.WebControls.WebControl { protected ...more >>

I have been having trouble with using JavaScript in UserControls. Specifically, the trouble is in using window.open (url). Sometimes the system will hang. Sometimes the original page, from which I am opening a new window, will go blank. I have used javascript with asp.net many many times with...more >>