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我在MSDN上有关如何创建一个自定义控制在自定义控件帮助中显示默认图像? MSDN教程
http://msdn.microsoft.com/en-us/library/cc295235(v=expression.30).aspx
我有麻烦试图在我的按钮显示的默认图像做一个教程。
下面的代码:
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.ComponentModel;
namespace ControlTest
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
this.InitializeComponent();
}
}
[Description("Represents a custom button control that responds to a Click event. Displays an image using a custom Source property if the Source property is bound to an Image in the template.")]
public class ImageButton : Button
{
[Description("The image displayed in the button if there is an Image control in the template whose Source property is template-bound to the ImageButton Source property."), Category("Common Properties")]
public ImageSource Source
{
get { return base.GetValue(SourceProperty) as ImageSource; }
set { base.SetValue(SourceProperty, value); }
}
public static readonly DependencyProperty SourceProperty =
DependencyProperty.Register("Source", typeof(ImageSource), typeof(ImageButton));
// Constructor:
public ImageButton()
{
if (DesignerProperties.GetIsInDesignMode(this))
{
this.Source = new BitmapImage(new Uri("images/Image.png", UriKind.Relative));
}
}
}
}
感谢您的帮助! =)
你有一个images/Image.png文件吗? – Paparazzi 2012-02-10 17:49:41
是的,我愿意。我再次检查。你认为它可能只是Blend 4的一个bug? – Farnsworth 2012-02-10 17:59:48
我会在构造函数中放入一个try catch,并确保它正在获取图像。尝试@“images/Image.png”。 – Paparazzi 2012-02-10 18:37:34