如何在代码隐藏中设置边框背景图像画笔

发布于 2024-12-20 04:53:58 字数 665 浏览 4 评论 0原文

我有一个在 Windows 应用程序中使用的 WPF 自定义用户控件。该控件有一个边框作为主要元素，并且该边框有一个默认的背景图像。下面的代码显示了如何将此图像设置为默认图像。默认图像是资源元素 (Images/BlueRoad.jpg)。

我希望能够使用图像文件名作为字符串（例如“C:\Pictures\myCustomPic.bmp”）以编程方式更改边框背景的图像。我需要使用 Visual Basic 在代码隐藏中执行此操作，除非有非常简单的方法可以在 XAML 中执行此操作。无论哪种方式，图片都会加载到控件的启动代码中。

我对 WPF 不太了解，这只是应用程序的一个小元素，因此希望尽可能简单、快速地完成此任务。

非常感谢！

<Border Name="mainBorder" Opacity="1" BorderBrush="SteelBlue" BorderThickness="3">
    <Border.Background>
        <ImageBrush  ImageSource="Images/BlueRoad.jpg"></ImageBrush>
    </Border.Background>

     Grid and other stuff goes here...

 </Border>

原文

I have a WPF custom user control that is used in a Windows Application. The control has a border as the main element, and this border has a default background image. The code below shows how this image is set as a default. The default image is a resource element (Images/BlueRoad.jpg).

I want to be able to programmatically change the image of the border background using an image filename as string (e.g. "C:\Pictures\myCustomPic.bmp"). I need to do this in code-behind using Visual Basic, unless there is a VERY simple way to do it in XAML. Either way, the picture will load in the startup code for the control.

I do not know much about WPF and this is just a small element of the application, so want to get this done as simply and quickly as possible.

Many Thanks!

<Border Name="mainBorder" Opacity="1" BorderBrush="SteelBlue" BorderThickness="3">
    <Border.Background>
        <ImageBrush  ImageSource="Images/BlueRoad.jpg"></ImageBrush>
    </Border.Background>

     Grid and other stuff goes here...

 </Border>

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℡寂寞咖啡 2024-12-27 04:53:58

using System;
using System.Windows.Media;
using System.Windows.Media.Imaging;
...
var imagePath = @"pack://application:,,,/MyProject;component/Resources/BorderImage.png";
ImageBrush brush = new ImageBrush(new BitmapImage(new Uri(imagePath, UriKind.Absolute)));
MyBorder.Background = brush;

using System;
using System.Windows.Media;
using System.Windows.Media.Imaging;
...
var imagePath = @"pack://application:,,,/MyProject;component/Resources/BorderImage.png";
ImageBrush brush = new ImageBrush(new BitmapImage(new Uri(imagePath, UriKind.Absolute)));
MyBorder.Background = brush;

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