user-controls

问题 I'm trying to make a simple crossword puzzle game in Silverlight 2.0. I'm working on a UserControl-ish component that represents a square in the puzzle. I'm having trouble with binding up my UserControl's properties with its' elements. I've finally (sort of) got it working (may be helpful to some - it took me a few long hours), but wanted to make it more 'elegant'. I've imagined it should have a compartment for the content and a label (in the upper right corner) that optionally contains its'

问题 I'm trying to make a simple crossword puzzle game in Silverlight 2.0. I'm working on a UserControl-ish component that represents a square in the puzzle. I'm having trouble with binding up my UserControl's properties with its' elements. I've finally (sort of) got it working (may be helpful to some - it took me a few long hours), but wanted to make it more 'elegant'. I've imagined it should have a compartment for the content and a label (in the upper right corner) that optionally contains its'

问题 I have a somewhat complex UserControl, and Visual Studio 2008 is giving me a rather harmless annoyance when working with it. Every single time I open the control with the Designer, it decides to immediately change some of the harmless values set by the designer - namely the initialization of Size properties. If I save those changes, close, and reopen, it almost invariably ends up deciding another component of my control needs its initial size changed, ad infinitum. Luckily these changes are

问题 I have a general idea, and there are some obvious cases, but there are also some gray areas for me - when is it best to use to extend from a component and when is it best to create a user control? This pertains to a specific work problem I am trying to solve, but the specifics of that are not important - a general answer to this question is enough for me. 回答1: In WPF and Windows Forms, both, the main difference is that a UserControl is meant to be a collection of controls - a reusable, single

问题 I have got a UIViewController in my app with a UIWebView in it. The UIWebView is fixed-size and configured to open any links in a new UIViewController (browser). This works, but when I try clicking a video like YouTube or Vimeo from within the web view, it opens on top of the view controller. This would normally not be a problem, but I have an overlapping view that needs to get a message to move out of the way when this happens. Is there a notification or any other way my view controller can

问题 IpInterfaceUC UserControl <div id="dvChannel" runat="server"> <asp:GridView ID="gvChannelUC" OnRowCommand="gvChannelUC_RowCommand" OnSelectedIndexChanged="gvChannel_SelectedIndexChanged" /> </div> IPServices page CodeBehind if (!IsPostBack){ }else { string str_btn = Request.Form.Keys[Request.Form.Keys.Count - 1].ToString(); handleClick(str_btn); } Question It always show str_btn is null.If I click Button,It'll show button's id.But when I click Select at GridView,It show str_btn is null.It

问题 I realize that a whole lot of code cannot fit here, but I am asking for general direction or pointer. I have .NET user controls nested six deep for an interactive gadget with (outer to inner) of : wrapper, tabs, panels, lists, rows, items. I am trying to get a reference to an ancestor control from a nested control. Specifically, I have this code in the code behind of a embedded "great great grand child" control. It works, but it is very ugly: MyTab _myTab = this.Parent.Parent.Parent.Parent

问题 In my ASP.Net page I have PlaceHolder and Button. When user click on this button, I add some UserControls from my Interface method getControl to the PlaceHolder. Code: protected void ActionBtn_Click(object sender, EventArgs e) { if (provider != null) { actualObject = (PlaceHolder)provider.getControl(); PlaceHolder1.Controls.Add(actualObject); } } Method getControl: public object getControl() { ph = new PlaceHolder(); exportInbBtn = new Button(); exportInbBtn.Text = "Export Inventury";

问题 How can I handle any of the tree view notifications listed here in a C# class that is derived from the .NET TreeView control? I tried to handle the click notification, for example, like this: class ExtendedTreeView : TreeView { private const Int32 NM_FIRST = (Int32)(0U - 0U); private const Int32 NM_CLICK = unchecked((Int32)((UInt32)NM_FIRST - 2U)); protected override void WndProc(ref Message m) { if (m.Msg == NM_CLICK) { MessageBox.Show("NM_CLICK"); } base.WndProc(ref m); } } But the message

问题 I noticed that similar questions have been asked before but I did not find any detailed examples. I have a winform program, its constructor has a parameter cn: public AddFailure(ProSimConnect cn)// constructor in winform { this.connection = cn; InitializeComponent(); ... } Now I need to simulate it in a UserControl in WPF and put it into MainWindow. In MainWindow.xaml: <Border ...> <IOS:Core_System/> </Border> I want to do this but I know I can't because it shouldn't have any parameter: