Hi all, I have a user control that contains a repeater that generates a list of check boxes. The checkboxes render fine, but they don't maintain their checked state on postback. I've tried using Page_Load, Page_Init, OnInit, enabling and disabling viewstate without success. Any help would b...more >>

Hello All, Could anybody please give me ideas on building a Image viewer control regards, Kuldeep ...more >>

Hi, I'm working on a rendered control that I'm trying to put client side validation into. The issue I'm having is that ValidatorHookupControl isn't working for me. This appears to be because my markup uses the input tag in lower case, but ValidatorHookupControl has code like if (contro...more >>

Hi, Are there any issues using ClientScriptManager.RegisterClientScriptBlock in a rendered control? I'm calling this function within the overriden Render method of my WebControl, but nothing the script is not coming out in my page source. After calling RegisterClientScriptBlock, a call to...more >>

Hi all, I have a very simple user control that contains 3 drop downs. Whenever there's a postback the values of these drop downs are lost. I've tried enabling viewstate everywhere without success. Could anyone shed any light on what's going wrong? Thanks, Paul Asx: <%@ Control Lang...more >>

Im try to build a control with multiple events rised by different elements but can't find any advanced example that can help me with this. In the case of GridView, it fires many events, one of those is SelectedIndexChaged and other is RowDeleted. when you look at the client script they prod...more >>

Hi all, I have a custom server control that can contain one or more buttons. I'm trying to expose an event handler as a property so that the buttons can fire a click event when clicked. However, I'm getting the following error: Cannot create an object of type 'System.EventHandler' from its ...more >>

Hi all, I don't use auto postbacks on my web site to keep it javascript-free and browser agnostic. Whenever there's a postback to my page I'm using the Page_Load event to use the posted data for database updates. However, the page hasn't been validated at this point. I can call Validate() at ...more >>

Hi, I created a custom control, and encountered a dirty property value persistence problem. I created a property with a custom class type, call SQLSettings which holds the SQL connection parameters, the class as follows: public sealed class SQLSettings { private string serverNam...more >>

I'm using a datalist with Repeat Column = 2.. Which will be Rendered <TR> <TD></TD> <TD></TD> </TR> now i want to add horizontal seprator.. I mean new row with doted line.. so i try to insert TableRow control between each row, but when i rty to override AddedControls i found all con...more >>

Can anyone recommend any books on ASP.NET 2 web control development. The Nikhil Kothari book I already have covers only ASPNET 1.x and I'm trying to use some of the new ASP.NET 2 webcontrol features without any luck, e.g. I am struggling with WebResource.axd - I've got it working fine but tryi...more >>

I am building an application that is totally data driven. The pages are built from scratch at runtime.I have everything working fine. Now all I need to do is to have the ability to add code both server-side and client-sie at runtime. I think I have pretttty much figured out the client side part....more >>

hi, i need to create a numeric textbox control which accepts only numbers, decimal point, backspace, arrow keys, should not allow pasting contents... etc. i've created a web user control by extending TextBox class and added a javascript attribute to it as base.attributes.add("onkeydown",...more >>

Hi, This may be a dumb question, but why is it necessary for a control's id and name attribute to coincide in order for the postback mechanism to work? Given that it appears to be necessary, why are they not wired to be the same value in a base class like control or webcontrol? Thanks ...more >>

I'm just in the process of developing a web server component and have come up against one final problem. It's like a data grid in that it displays rows of data - which can be edited / updated in-line. The edit / update buttons are child ASP:button controls. I have all the functionality work...more >>

Hi all, I have a control which i wrote which inherits the asp:dropdownlist control. Works great, all happy. If when using it i try to declaratively add some items, it complains that they are unknown types. eg... <mytag:mydropdownlist id="lstInherited" runat="server" appenddatabounditems...more >>

Hello All, I've posted this in microsoft.public.dotnet.framework.aspnet.datagridcontrol but got not reply so I'll try my luck here. Any help would be greatly appreciated. Thanks I am having some difficulties with a user control implementing IPostBackDataHandler when it is placed i...more >>

I'm building a set of custom server controls that need to perform certain actions based on state. So, when a button is clicked in server control 1, I'd like to call a method from server control 2. I had considered developing a master control that contains references to each of the children co...more >>

In the most simple terms assume we have a Composite WebServer control This Composite Control (CC) is just a "label" private Label _lblCommissionType; protected override void CreateChildControls() { Controls.Clear(); this._lblCommissionTy...more >>

Hi All, I am not a programmer, but learning ASP.NET 2.0 to understand the capabilities and potential limitations for my customers. This is my disclaimer in case my terminology does not match up with what you would expect me to be using :-) From what I can tell, you can Personalize ASP.N...more >>

Hi everyone, I'm wondering if anyone has a suggestion on how to do this, or if it's even possible. In my datagrid's OnItemDataBound function I'd like to somehow "add" a child row beneath one of the datagriditems (chosen via a QueryString variable) and use it to hold a secondary datagrid....more >>

What kind of JavaScript is needed to delete all of the cookies for the current web site, and can that be registered in an ASP.NET page as a button? Thanks. ...more >>

I've created a user control that I then place in a panel. The reason it's in a panel is that it's part of search criteria that I hide/show panels based on the type of search begin done. I can place a label next to this control in the IDE and it looks fine but when I run the app, the label is o...more >>

Hi All, I write an ActiveX containing a progress bar and a label by C#. When running in IE, the progress bar is OK; but I cannot update the value of label's Text. Plz explain this problem for me thanks, HaDV ...more >>

I have a usercontrol composed of a label and textbox. I've created a custom property, LabelText, that I can assign at run time. What I'd like to see is if I place a value in LabelText in the Property Window at design time, to see the usercontrol update itself with this value. How is this acc...more >>

Hello Everyone I want to load aspx file through AJAX ( javascript ) I am doing this in ajax it works well but it does not load javascript render by the controls how can i do this Plz.. do help if any one knows thanks Sonia ...more >>

Hi all, What is the recommended way to add child controls *around* existing child controls in the CreateChildControls method (e.g. table, row and cell controls for layout purposes)? Is the best way to keep a reference to the existing child controls, clear the Controls collection and then re...more >>

From my testing ISupportInitialize is not honored in ASP.NET We have a control like the following... <ni:Meter ID="Meter1" runat="server" Range="67, 73" Value="70" > </ni:Meter> The Value property checks the range and throws an exception if the range is outside its value. The defa...more >>

Is there a way to put content between tags of a custom control so that it will populate the defaultproperty such as my TabLabel property? When I tried to put values between the tags I got the error. I have ParseChildren as ParseChildren(true, "Tabs")] where Tabs are part of a tab strip I d...more >>

I am frustrated and not sure where to turn for help. I have a custom control that has been working fine. The custom control is composed of a dropdownlist and button. I have placed the control in a repeater and it works just fine. I have added a query filter at the top of the page where I...more >>

We have created some dynamic web image controls. At design time we use System.Web.UI.Design.ControlDesigner.OnPaint to draw our control directly to the design surface. This saves us from having to create temporary images on the file system. The problem is when our controls are placed inside...more >>