custom-controls

问题 I have developed the following custom combo box to increase the height of the items. Once that is done, a blank space appears at the end of the drop down menu when there is a scrollbar. How can I correct the issue? class MyComboBoxXX : ComboBox { public MyComboBoxXX():base() { this.DrawMode = DrawMode.OwnerDrawVariable; this.DropDownStyle = ComboBoxStyle.DropDownList; this.MaxDropDownItems = 5; this.IntegralHeight = false; } protected override void OnMeasureItem(MeasureItemEventArgs e) { e

问题 I have a custom control which has it's template defined and the template contains below code: <FlipView Grid.Row="3" Grid.ColumnSpan="2" x:Name="FlipView1" BorderBrush="Black" ItemsSource="{Binding ItemsCollection, RelativeSource={RelativeSource TemplatedParent}}"> <FlipView.ItemTemplate> <DataTemplate> <ScrollViewer> <Grid> <local:UserControlA x:Name="PART_UserControlA"/> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="100" /> <ColumnDefinition /> </Grid.ColumnDefinitions> <local

问题 below is the XAML code for my UWP app media element , but its not giving the customized media controls, why is that? <MediaElement x:Name="Media" Grid.Row="1" AutoPlay="True" AreTransportControlsEnabled="True" > <MediaElement.TransportControls> <MediaTransportControls Background="#FFF5F509" Foreground="#FF0625EA"/> </MediaElement.TransportControls> </MediaElement> 回答1: Although MediaTransportControls has Background and Foreground properties, but setting these properties won't affect the

问题 I have a custom control with one property, showDeleteButton. Type: boolean Editor: Boolean value Required field: true Sporadically I get this error message when building, in the XPages that use it: Unknown property showDeleteButton. It is not defined on tag xc:ccCommonActions I've tried deleting the custom control and recreating it. The issue still pops up after a few builds. I can work around the issue by disabling the required property, saving, enabling, saving, project->clean. Have anyone

问题 I have already seen this answer for adding designer support to a custom Control. It works up to and including adding child Controls. Except that after closing the designer and opening it again - those children are gone. Is there some way to get support for adding child Controls in the designer? Perhaps by some event that we can handle somehow "manually" (i.e. by my code)? This is not a UserControl . It's a class inheriting from Panel . 回答1: You need to shadow or override the Controls property

问题 I'm having a WPF Custom Control <local:SuperControl> <local:SuperControl.SBItem> <MultiBinding StringFormat="{}Name: {0} ({1})"> <Binding Path="Name" /> <Binding Path="ID" /> </MultiBinding> </local:SuperControl.SBItem> </local:SuperControl> The ViewModel Property public string Name { get; set; } public string ID { get; set; } Consider the Value for the Property Name = "John"; ID = "STK001"; The Custom Control public class SuperControl : ItemsControl { public static readonly

问题 Ok I created simple user control that look like this <%@ Control Language="C#" AutoEventWireup="true" CodeFile="PlaceHolderCMS.ascx.cs" Inherits="Controls_PlaceHolderCMS" %> <div id="contentPlaceholder" runat="server" class="contentPlaceholderStyle"> </div> I am using it like this <div class="mainField" runat="server"> <cms:PlaceHolder ID="PlaceHolderCMS1" runat="server" class="PH1" /> <cms:PlaceHolder ID="PlaceHolderCMS2" runat="server" /> </div> But my problem is CSS, I can edit styles that

问题 I've build an simple control called Menu: namespace MyControls { public class MenuItem { public MenuItem() { Visible = true; } [Localizable(true)] public string Text { get; set; } [Localizable(false)] public string Link { get; set; } [DefaultValue(true)] public bool Visible { get; set; } } public class MenuDesigner : System.Web.UI.Design.ControlDesigner { ... } [ParseChildren(true, "Items")] [PersistChildren(false)] [Designer(typeof(MenuDesigner))] public class Menu : Control { ... public

问题 I have a requirement where i need to add column names and rowdatabound values dynamically .I has managed to get Column names dynamically .According to my need i want values to be displayed in the form of checkboxes in the rows of the grid either in checked form or unchecked based on condition but here every thing is coming in unchecked formate .. I am using .net membership Role table... Here is my code for gridview Dynamic column allocation.. protected void BindGridviewData() { var role =

问题 I want to create my own custom controls in Android application and use them in this way: In the XML file: <MyButton .... /> I would like to define MyButton some where in the resources XML 回答1: Create your own subclass of View (e.g., com.ofirbit.MyButton ) and then reference it in your layouts (e.g., <com.ofirbit.MyButton android:id="..." /> ). Here is an Android library project and demonstration sub-project showing an implementation of a custom ColorMixer widget and its use in an application.