The ControlToValidate property is wrecking my head. I have a custom composite server control defined as follows: internal abstract class MyControlBase : Control, INamingContainer {...} [ValidationProperty("ValidationValue")] internal class MyControl : MyControlBase {...} MyControl in ...more >>

I have created a templated control. As far as the control is concerned I am able to put any HTML inside each template. However, I can't seem to figure out how to embed a server control to it. When I compile and run it shows up, but I can't wire up any kind of event to it. I have searched a...more >>

I added an image property to my custom control. the property type i set at as string because I want the url that is to be used for the control. How do I set for this image property when the developer is in the properties window and clicks to enter this value for the property, the ability to vi...more >>

Greetings, I"m develop a custom control (render). It inherits a ListControl. In the Render method, I apply an ArrayList to the DataSource property and call the DataBind method. So, how can I get the SelectIndexChanged event? In other words, how can I know when the user change the dropdownlist...more >>

How do I get a value of a textbox control from a form? On form1, I have a textbox with the value "CountyID" with a submit button; when the user clicks on Submit, it goes to Form2. How do I get the value of "countyID" (or whatever the user enters into the textbox) to display on form2? Some...more >>

I've built a ASP.NET control that stores some info (an XSLT transform) in a ..resx file in the assembly that also has the control. However, I've read the following in MSDN documentation a few times, "Only .resources files should be embedded in common language runtime assemblies and satellite as...more >>

Hello, i have a control i wrote which inherits from the ImageButton control. On the ImageButton.ImageUrl property, you can use "~" to represent the root of your application (vs. the domain root), so if my app resides @ www.myserver.com/myapp/ and i put in an image i can set its imageurl to ...more >>

I have placed 3 web user controls on a page, a header, a navigation and a products control. Each control is contained in a row and cell in a table. The header and navigation controls work fine, but the products control is displayed at the top of the page instead of inside the table. I have so...more >>

I have a header control at the top of my default page. On this control there are 4 buttons, each one displays a corresponding panel. There also is a drop down list with a list of counties. The list of counties is filled from a dataset when the page loads. The user selects a county, and then...more >>

I have 5 controls on a page, each having it's own connection to a database and different queries per control. Each control is displayed by the user clicking on a menu. Simple enough. However, because they are all on one page, each connection and dataset is created when the first page is load...more >>

Hi, I'm trying to do the following but I can't understand what's wrong. Could you help me here! I do paging with a Repeater like this: DataSet ds = new DataSet(); dad.Fill(ds, "MyOffers"); if(ds.Tables[0].Rows.Count==0) Delete.Enabled=false; PagedDataSource objPds = new PagedDataS...more >>

I'm trying to make a custom control. I started off basing it on a ListBox, but because of the bug in that control that prevents it from rendering name/value pairs, I decided to use an HTMLSelect instead. But when I changed it, I started getting an error: Public Overrides Sub RenderBeginTag(...more >>

Hi, Is it possible to determine in your custom control code if it is being added to the control hierarchy through page parsing or being added dynamically via code. Thanks Donal ...more >>

Hello, Why doesn't ShouldSerialise Method work in WebControl? What is the best way to control the which attributes are serialized and which once aren't DefaultValue attribute in not enough. Thanks Victor ...more >>

I picked up a project that has been started with one form and about 20 controls, and am wondering if this is very practical. It seems to work well; and is easy to follow. The form has a header with a menu, and each item on the menu opens a panel with one or more controls on it. I know in VB6...more >>

I am a bit twisted and need some straightening out. I have a webform with 3 controls on it: a mainHeader, a sectionHeader with a label control contained in the mainHeader, and a topHeadline. In the topHeadline, I am retrieving a value with a stored procedure. I need to set that value to a la...more >>

My UI is one table, 2 colums, one row. The cell on the left has a tree and the cell on the right has a placeholder control. When the user clicks on a tree item, I dynamically load the apporopiate user control into the PlaceHolder control using this code... objPlaceHolder.Controls.Clear(); obj...more >>

I am a bit twisted and need some straightening out. I have a webform with 3 controls on it: a mainHeader, a sectionHeader with a label control contained in the mainHeader, and a topHeadline. In the topHeadline, I am retrieving a value with a stored procedure. I need to set that value to a la...more >>

I have a Tree control for displaying folders list for a= particular client in a Tree structure in a web application using= Asp=2ENET and C#=2E Now i want to click on that tree control's= Node(say Node1), then related files under that folder(Node= containing Folder name)will be displayed unde...more >>

I'm building some ASP.NET components, and I'd like them to function in a server farm scenario. I have one class, "AppClass" that contains only read-only data. I also have a second class, "SessionClass", that stores a reference to an AppClass i.e: SessionClass sc = new SessionClass(); sc.App...more >>

I have a DataGrid from which the datasource is a SqlDataReader based on a SQL Server Stored Procedure. This SP returns columns will NULL values. When I DataBind() to the DataGrid, all is well. It's when I want to detect these null values in the ItemDataBound event that...well...I can't detect ...more >>

All I'm trying to build a table dynamically from a DataView using IEnumerator. It will be read only data for printing on Avery 5160 label stock. I had some trouble making the while(viewCounter.MoveNext()) and foreach(DataRowView in dv) samples work as I was not able to stricly break these...more >>

Hi again. I'm wrong in my first message. What I need to do is, render my control in a placeholder passed by param. I try somethings here, by I get this error: A value of type 'System.Web.UI.WebControls.PlaceHolder' cannot be serialized. Someone know any way to do that? Render a custom con...more >>

I am working on a Web Custom Control that will function as a Tab menu. I am having problems with figuring out what I need to do to link up the viewstate for controls that are nested in my Custom Control. I'm really not sure how to try to explain this, so here is some sample code that will illu...more >>

I know more html is needed to really produce this but enough is here for me to ask my question. So, this HTML code produce 2 buttons. One button is a HTML control and the other is ASP Web or Server Control. Why are there 2 ways to create buttons if they so the same thing? Do they do the same thi...more >>

Hi, I have created a base control that some other custom control derive off. I dont want this base control to be createable - what is the best recommended way to do this? Implemented base control constructor as a protected constructor? Thanks Donal ...more >>

Should I include my designers in the same assembly as my controls? This seems to me to be a bit of a mix up of purposes. Do you people typically provide a single assembly with both controls + designers in, or do you create an additional ".Design" assembly in which you place all of your designe...more >>

I have read some tutorials on composite controls. They all all tend to be on static controls such as tables etc. They don't seem to cover on dealing with user events on the controls. I have created some LinkButtons on a composite control, but I need to be able to react to which of these linkbu...more >>

I'm writing some custom controls, and I'd like to be able to remove all unnecessary whitespace, etc. from my output. Ideally, I would just render as normal, then remove this extra whitespace as the last step in the rendering process. I'm sure I saw code to do this, but now I can't find it. Is ...more >>

Hi all I have a few questions regarding composite controls 1) My composite controls are created based on a property of my control. When the postback of a page occurs due to a button click, my CreateChildControls() method is called before the button code is executed, so if that button code c...more >>

I have a ASP web page that has its own codebehind vb file. But then I am using a composite control in that page. The code for the control is built from a vb file. But I having problems as I can't get MS VS.net to create the DLL of the composite control in the BIN directory. I thing it might...more >>

I am reading off menu items from an XML file. The problem I have is how to create these menu items into link buttons on the fly. As the number of menu items will vary depending on the contents of the xml file. So I cannot initialise these all these link buttons one by one at start. So I was...more >>

I need to make a menu componen like this page www.f135.com They made the menu on Javascript and I already have the code to make that menu in javascript, but I want to make a menu so that the user can make any nodes and subnodes. This is the code in javascript, I want to put it in asp.net cont...more >>

I have seen several composite control examples where LoadViewState and SaveViewState are overloaded to track viewstate on complex objects such as styles, but I cannot find anything that tells me why I need to do this. Can someone tell me why is this code not sufficient for Viewstate managemen...more >>

Dear All, I need help with the control In my database will store page detail including field name and type of control to display in the page such as Page 1 Name , textbox Lastname , textbox Age , Dropdown , tblCustomerAge (this is data source) The problem is I need to create the...more >>

Hi, I have a dropwnlist of fixed width. The item names in the dropdown list are quite big. The Tooltip property for a dropdownlist control doesn’t work!. So using DHTML, I refreshed the contents of a DIV on the mouseover event of the dropdownlist control. This works fine. Now, the proble...more >>

How do I store an image and a web custom control's dll in a multifile assembly so that the image can be retrieved and displayed while the control is in design mode? This would allow the control to display a company logo while in design and ensure that the logo's image file does not get delete...more >>

Hi, I'm sure this has been asked before... Is there a setting or attribute that I can specify on my control to tell the page parser to ignore literal content when parsing children of my custom control? I'm overriding RenderChildren of my parent control and the literal content is causi...more >>

How do I implement design time support for a web custom control? For some reason the control can't seem to find System.Web.UI.Design and I get the following compiler error: C:\Documents and Settings\MLibby\My Documents\Visual Studio Projects\CustomControlEnum\CustCtrlDesigner\CustCtrl.cs(3...more >>

Hi, Ive a annoying problem when creating Custom WebControl. When i create this sample control in codebehind. It renders as: <span id="testctrl"><input name="testctrl:testctrl" id="testctrl_testctrl" type="text" value="TestValue" /></span> Why does it render <span> tags? How can I create it ...more >>