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• asp.net vb user control raising an event on the calling page

  - by jvcoach23

  i'm trying to learn about user controls. I created a user control that has a textbox and a button. What i'd like to be able to do is when i click the button in the user control, populate a label in the aspx page. I understand that i could just have a button on the page that uses some properties on the user control to get that information.. but i'd like to know how to do it with the button the user control.. the reason for this is the button is just an example.. a learning tool. if i can get this working, i'd likely be putting thing in the user control that might require this kind of passing information. Anyway.. i've found some c# examples that i tried to get working as vb.. but once started getting into the delegates and events.. well.. it made me turn to this post. anyway.. hopefully someone can lend a hand.

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• WPF style problem with custom control and textbox-derived class

  - by Martin

  I had the following situation: main application has app.xaml, which sets the style for TextBox controls a custom control is implemented in a separate DLL, and uses several TextBox controls The main application's TextBox style is applied to the custom control's TextBox controls. Cool! My problem comes in because I need to use a class derived from TextBox in the custom control. Now the main app's TextBox style is no longer applied. Can the custom control DLL have something like "app.xaml" where I can set the style for all my derived TextBox controls? Or can the main application somehow set the style for all TextBox-derived classes? Thanks!

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• Creating a ListView/TreeView using Category (Control Panel-Like) View

  - by Andrew Moore

  I currently have an application which uses a regular ListView with groups to show a bunch of modules. I would like to use a Category view. Category view is the new view introduced in Windows Vista for the Control Panel: Is there a third party control or a way (via API) to create a ListView which mimics the behavior of the Windows 7 Control Panel? Categories with icons and action links. Separate events for Category Click and Action Click. One or two column layout Separators between action links or lines EDIT: Seems like Windows is using a TreeView (SysTreeView32) control internally for this.

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• How to pass information from validation summary(strings) to a user control

  - by gre3ns0ul

  I have a user control than display approved inputs but i want to intercept invalid inputs recieved in validation summary to pass them to my user control and display in my user control Any ideas? thanks :)

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• How to access a nested MultiView control in ASP.NET

  - by Eden

  I have an asp.net page with a multiview control nested within another multiview control. In my code behind I'm trying to access the inner most multiview control to set it's ActiveViewIndex. The problem I'm having is that I don't seem to be able to access the control. It's not available directly via this.MySubMultiview. And attempts to use this.FindControl or this.MyOuterMultiView.FindControl doesn't work. Html: ... ... Code behind: MultiView multiAddress = (MultiView)this.MultiViewMain.FindControl("MultiViewAddress"); multiAddress.ActiveViewIndex = 1;

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• How to find the Dynamically added gridview footer control

  - by harold-sota

  I have add controls to my gridview footer, here is the code SGridView.ShowFooter = True For i As Integer = 0 To ctrList.Count Dim ctr As Control = CType(ctrList.Item(i), Control) SGridView.FooterRow.Cells(i + 1).Controls.Add(ctr) Next the ctrList contain Controls textBox, checkbox dropdowlist ect. there is all ok but when i wont to get the text or value or checked value of controls i cant cast the controls in rowcommand event Here is the code: Protected Sub SGridView_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles SGridView.RowCommand If e.CommandName = "Add" Then Dim ctrList As ControlCollection = SGridView.FooterRow.Controls For Each ctr As Control In ctrList If TypeOf ctr Is TextBox Then Dim name As TextBox = CType(ctr, TextBox) Dim val As String = name.Text End If Next End If this excample is for the textBox control. Any idea?

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• Sharing same vector control between different places

  - by Alexander K

  Hi everyone, I'm trying to implement the following: I have an Items Manager, that has an Item class inside. Item class can store two possible visual representations of it - BitmapImage(bitmap) and UserControl(vector). Then later, in the game, I need to share the same image or vector control between all possible places it takes place. For example, consider 10 trees on the map, and all point to the same vector control. Or in some cases this can be bitmap image source. So, the problem is that BitmapImage source can be easily shared in the application by multiple UIElements. However, when I try to share vector control, it fails, and says Child Element is already a Child element of another control. I want to know how to organize this in the best way. For example replace UserControl with other type of control, or storage, however I need to be sure it supports Storyboard animations inside. The code looks like this: if (bi.item.BitmapSource != null) { Image previewImage = new Image(); previewImage.Source = bi.item.BitmapSource; itemPane.ItemPreviewCanvas.Children.Add(previewImage); } else if (bi.item.VectorSource != null) { UserControl previewControl = bi.item.VectorSource; itemPane.ItemPreviewCanvas.Children.Add(previewControl); } Thanks in advance

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• Attached property and style missing on re adding the user control

  - by RodD

  Hey people I've got an issue with a WPF project I'm working on, I have an items control which I add to and remove from certain user controls, these contols styles and attached properties are there on first view but when I remove and add them again the user control apears on screen but is detached from the items control attached properties and styles. Is this behaviour common and if so what is the best way to handle it? Thanks in advance

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• which control have no event in.net

  - by ravindr kumar sinha

  which control have no event in.net

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• Good Replacement for User Control?

  - by David Lively

  I found user controls to be incredibly useful when working with ASP.NET webforms. By encapsulating the code required for displaying a control with the markup, creation of reusable components was very straightforward and very, very useful. While MVC provides convenient separation of concerns, this seems to break encapsulation (ie, you can add a control without adding or using its supporting code, leading to runtime errors). Having to modify a controller every time I add a control to a view seems to me to integrate concerns, not separate them. I'd rather break the purist MVC ideology than give up the benefits of reusable, packaged controls. I need to be able to include components similar to webforms user controls throughout a site, but not for the entire site, and not at a level that belongs in a master page. These components should have their own code not just markup (to interact with the business layer), and it would be great if the page controller didn't need to know about the control. Since MVC user controls don't have codebehind, I can't see a good way to do this. I've searched previous SO questions, and have yet to find a good answer. Options so far In an attempt to avoid turning the comments section into a discussion... RenderAction This allows the view to call another controller, which will be responsible for interacting with the BLL and whatever data is necessary to its corresponding view. The calling view needs to be aware of the sub controller. This seems to provide a nice way to encapsulate partial views and controls, without having to modify the calling controller. RenderPartial The calling controller is still responsible for executing whatever code is associated with the partial view, and making sure that the model passed to the partial view contains the data it expects. Effectively, modifying the partial view potentially means modifying the calling controller. Annoying especially if this is used in multiple places. Portable Areas Place each control in its own project/area?

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• Stagger increments in C# NumericUpDown control

  - by mihe

  Hi cloud of wisdom :-) I am facing some trouble trying to configure a particular configuration for a NumericUpDown control in c#. Basically, I have seen that I can set the Increment interval, but I would like to manage the Increment interval depending on which arrow is clicked (up or down). I have checked the events of the control, but I do not find an event for each arrow. Basically, I want to achieve a control where, at different values, the increment is different. from 0.00 to 5.00 increments of 0.01, from 5.00 to 20.00 increments of 0.04, and so on Is this possible ? Note: It would be useful also an historic value in the control for the last value when the valuechanged event is trigger. Does this exist? Thanks in advance for any comment or suggestion!!!

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• Can an ASP.NET user control determine its context or its parent .aspx file

  - by John Galt

  Is it possible for a user control to determine its "context" or its parent .aspx page in some way? Right now I have a user control that is declared on a typical .aspx page as follows: <%@ Register TagPrefix="uc1" TagName="ManageTitle" Src="../UserControls/ManageTitle.ascx" %> The user control currently emits a textbox as follows: <asp:textbox id="txtTitle" runat="server" MaxLength="60" ToolTip="Describe the item with a short pithy title - most important keywords first"/> The page_load for this .ascx file is currently like this: Me.txtTitle.Text = SetPageTitle() While some places in this web app need this (i.e. a textbox where end-user can type a "title"), I have other places where I want to show the "title" information in a "read-only" way. For example, rather than a textbox, I could use a label control or a textbox with Enabled="false" to prevent data entry. I suppose I could clone this small .ascx file and append a suffix to its name like _RO.ascx or something but I am wondering what the best approach would be. In short, can a user control get some sort of "context" from the page that declares it or is there an altogether better way to accomplish this sort of thing? Thank you.

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• calculate the rendering of a custom control

  - by Marc Jonkers

  In an xpage I would like to be able to decide which custom controls have to be rendered or loaded. I have a custom control named 1, another 2, 3 etc When a scoped variable has the value 1, custom control 1 should be displayed/rendered/loaded. A value of 2 , custom control 2 has to be displayed. etc I came up with following sollution : I calculate if that custom control has to be loaded or not depending on the value of the scoped variable. Since I have 8 of these custom controls on 1 page I was wondering ,since only 1 out of those 8 custom controls have to be rendered ,if there isn't a better way with less code to do the same job. Won't my sollution put a lot of load to my server ?

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• Control within another control in asp.net disables server-side events?

  - by Xaisoft

  I have a control which has a button on it. All the button does is redirect the user to another page. On this control I have another control which just display some stuff, nothing fancy. When I click on the button, it does nothing. When I remove or comment out the other control, the button event works. Is this by design? I am not sure how to fix it or what is causing it. ControlA.ascx contains a button with an event like so: protected void Button1_Click(object sender, EventArgs e) { Response.Redirect("~/Home.aspx"); } ControlA.ascx contains another control inside of it, lets call it ControlB.ascx. The Button1 click event does not fire when ControlB.ascx is in ControlA.ascx, but when I remove it or take it out, Button1 event fires and it goes to Home.aspx. This does not only happen for Button1, if I decide to add a second button and create an event for it, if ControlB is in ControlA, the second button event won't fire either.

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• Custom Control Same Assembly - Visual Web Part

  - by FullyManaged

  Hi, I am working on a Visual Web Part which requires creating a custom control. I am trying to add custom control to the same assembly as Visual Web Part and registering control as: <%@ Register TagPrefix="cus" Namespace="SomeCustomControlNameSpace" % When I am trying to access this its throwing runtime error : Unknown server tag 'cus:ControlName'. Do I need to make any Web.Config entry for this? Any Ideas?

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• Properly Repaint a Custom Control

  - by serhio

  I am doing a custom control, that should be painted like as standard one, but also having a Icon displayed near it. So, I jet overrided OnPaint like this: protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) {     base.OnPaint(e);     e.Graphics.DrawIcon(theIcon, X1, Y1 - iconSize.Width / 2); } Now, everything is OK, but when my control moves, the icon still remains drawn on the ancient place. What should I add to manage it properly? In the image we can see that after moving from top to bottom the line(custom control) even is not properly redrawn. I tried to do public override void Invalidate() {     base.Invalidate();     if (Parent != null) {         Parent.Invalidate(new Rectangle( X1, Y1 - iconSize.Width / 2, iconSize.Width, iconSize.Height));     } } but this does not work - when changing location the Invalidate is not even called. If it matter the custom control inherits from VisualBasic.PowerPacks.LineShape component.

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• Why won't my control accept keyboard input?

  - by Mason Wheeler

  I've built a custom control that I'm trying to send input to. It will accept mouse input and report MouseDown, MouseMove and MouseUp correctly, but for whatever reason, it won't accept keyboard input. When I click on it, it doesn't receive focus, and any keys I press get interpreted by whatever control had the focus already. This is probably something really simple. The first place I thought to look was in the ControlStyle property, but the only thing I can see in the helpfile about keyboard input is csNoStdEvents, which disables it, and my control doesn't have that. So what do I need to do to make it so my control can receive input focus?

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• Control for date input

  - by Ismail S

  Is there any other good control for date field input apart from CalanderExtender of AJAX Control Toolkit?

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• How to build a control programatically?

  - by W_K

  I have custom control written in Java. For the sake of simplicity lets assume that it looks like this: public class HelloworldControl extends UIComponentBase { @Override public void decode(FacesContext context) { String cid = this.getClientId(context); ... super.decode(context); } @Override public void encodeBegin(FacesContext context) throws IOException { ResponseWriter writer = context.getResponseWriter(); writer.writeText("Hello world!", this); // I want a view!! } @Override public void encodeEnd(FacesContext context) throws IOException { ResponseWriter writer = context.getResponseWriter(); ... } public void restoreState(FacesContext context, Object state) { Object values[] = (Object[]) state; ... super.restoreState(context, values[0]); } public Object saveState(FacesContext context) { Object values[] = ... } } I would like to add programatically child control to it. For example I would like a child view control to render a view just under the Hellow world text. How can i do this? What is the standard procedure to build dynamically a control? To put it simply - I want programatically build a hierarchy of standard components and I want to attach it to my control.

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• Generating Bezier Control Points for an object

  - by E.F

  Hello everyone, I'm trying to draw objects using Bezier surfaces with openGL's evaluators. I am struggling with defining the control points for my objects. Can anyone please suggest ways to get the control points for an object? Is there some program that I can use to design my object then import the control points into a file that I can use in my application?

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• Calendar control GUI C++ library

  - by Dmitriy

  Who knows a good component for a "calendar control" (NOT date/time picker)? "Calendar control" means something like Mozilla Sunbird: Requirements to the control: - C++; - Day/Week/Month view; - Support of several calendars; - Without MFC dependences; Nice to have: - Open source; - Cross plathform; - Free; - Minimum external dependences (boost etc are fine);

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• cruise control turns off on me when i use the system process

  - by zachary

  Cruise control service set to System - Allow user to interact with desktop for the service. I log out with my user id and cruise control turns off. Any idea what is going on here? If I start the service a console window comes up. As soon as I close it cruise control also turns off... I need it to always be on... any ideas?

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• How to hide and show silvelight user control on main Silverlight Control?

  - by Steve Johnson

  Hi all I have a main silverlight control named MainPage.xaml in an asp.net web site. I want to dynamically add and remove control at run time. So, I have created another control Top10.xaml and added to selected canvas area on MainPage.xaml as described on this page(Click Me): Now i need to modify Top10 visibility in MainPage.xaml dynamically when a button is clicked on MainPage.xaml using C# code in MainPage.xaml.cs. Can anybody help me out? Thanks

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• Bring Control to ToolBox

  - by Mohanavel

  I created a TextBoxControl which is inherited from Infragistics.Win.UltraWinEditors.UltraTextEditor, an Infragistics control. As showed below. public class TextBoxControl : Infragistics.Win.UltraWinEditors.UltraTextEditor { //My Stuff } At some level Infragistics.Win.UltraWinEditors.UltraTextEditor class also inherited from WinForm's "Control" class. My problem is, this control is not appearing in the ToolBox. I done two steps 1. Choose from browse option and select the dll where the class present 2. Drag and drop the dll directly to the ToolBox In-fact both are same, TextBoxControl control is not appearing in the ToolBox, what i missing here. Edit : TextBoxControl class have empty constructor, nothing special in this class.

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• How can I set two values in HtmlInput control

  - by Homam

  Hi, I have an HtmlInputText in an EditItemTemplate in a DataGrid, This control is bound with a value from the SqlDataSource I want to set in this control two values the JOB_CODE_ID and the JOB_CODE instead of just JOB_CODE. I used to use Tag in the WinForms to set values such this, but in I don't know similar way in ASP.Net. In my situation I can't use a hidden control to save the JOB_CODE_ID there, Is there any way to set two values in a HtmlInputText control ? The code: <input type="text" ID="JOB_CODETextBox" runat="server" value='<%# Bind("JOB_CODE") %>' /> Thanks in advance.

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