无法删除某些其他进程使用的文件

无法删除某些其他进程使用的文件

本文介绍了无法删除某些其他进程使用的文件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我在我的wpf应用程序中使用以下代码显示一些图像:

I am displaying some image in my wpf app using following code:

 <Image Source="{Binding Path=TemplateImagePath, Mode=TwoWay}"  Grid.Row="3" Grid.Column="2"  Width="400" Height="200"/>

并在代码后面的构造函数中设置绑定属性,下面是代码: / p>

and setting it's binding property inside code behind's constructor by navigating through some directory, below is the code:

DirectoryInfo Dir = new DirectoryInfo(@"D:/Template");
            if (Dir.Exists)
            {
                if (Dir.GetFiles().Count() > 0)
                {
                    foreach (FileInfo item in Dir.GetFiles())
                    {
                        TemplateImagePath = item.FullName;
                    }
                }
            }

image我需要删除这个旧的图像,这是我在做以下方式和设置图像绑定为null:

but if user upload some other image then I need to delete this old image which is I am doing in the following way and setting image binding to null:

DirectoryInfo Dir = new DirectoryInfo(@"D:/Template");
                if (Dir.Exists)
                {
                    if (Dir.GetFiles().Count() > 0)
                    {
                        foreach (FileInfo item in Dir.GetFiles())
                        {
                            TemplateImagePath= null;
                            File.Delete(item.FullName);
                        }
                    }
                }

删除其他进程使用的文件。
如何删除它?

But Iam getting exception that Cannot delete file used by some other process.How can I delete it?

推荐答案

为了能够删除图像, ImageControl,您必须创建新的或对象,其具有设置。

In order to be able to delete the image while it is displayed in an ImageControl, you have to create a new BitmapImage or BitmapFrame object that has BitmapCacheOption.OnLoad set. The bitmap will then be loaded from file immediately and the file is not locked afterwards.

更改属性 string TemplateImagePath ImageSource TemplateImage 并以如下方式进行绑定:

Change your property from string TemplateImagePath to ImageSource TemplateImage and bind like this:

<Image Source="{Binding TemplateImage}"/>

设置 TemplateImage

BitmapImage image = new BitmapImage();
image.BeginInit();
image.CacheOption = BitmapCacheOption.OnLoad;
image.UriSource = new Uri(item.FullName);
image.EndInit();
TemplateImage = image;

或:

TemplateImage = BitmapFrame.Create(
    new Uri(item.FullName),
    BitmapCreateOptions.None,
    BitmapCacheOption.OnLoad);






如果您要保持绑定到 TemplateImagePath 属性,您可以改为使用,将字符串转换为ImageSource如上所示。


If you want to keep binding to your TemplateImagePath property you may instead use a binding converter that converts the string to an ImageSource as shown above.

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07-30 21:51