VB.Net - 删除image.PropertyItems数据 [英] VB.Net - Removing image.PropertyItems data

问题描述

如何成功删除图片属性项？我已经尝试加载图像，然后使用image.ProperyIdList循环，然后调用.RemovePropertyItem，然后将图像保存到新文件，但新文件仍然具有所有元数据。我还尝试将每个propertyItem.value的所有字节清零，但是当我保存时会导致genric gdi +错误。我也尝试将图像推入记忆流并返回，认为它会清除元数据。有什么想法吗？

How do I successfully remove an images property items? I have tried loading the image and then looping thru using the image.ProperyIdList and then calling .RemovePropertyItem and then saving the image to a new file, but the new file still has all the metadata. I have also tried to zero out all the bytes for each propertyItem.value but that causes a genric gdi+ error when I save. I have also tried pushing the image into a memeory stream and back, thinking it would clear the metadata. Any ideas?

推荐答案

我可以使用下面的代码完成以下任务。它不是最快但它确实有效。我基本上剥离了我想要的元数据，然后为没有属性的网络创建了一个新图像，从而确保个人数据不在照片中。

I was able to accomplish the following by using the code below. It is not the fastest but it does work. I basically strip off the metadata I want and then create a new image for the web with no properties, thus making sure the personal data is off the photo.

Using img As Image = Image.FromFile(fileName)
            Using newImage As New Bitmap(img.Width, img.Height)

                Using gr As Graphics = Graphics.FromImage(newImage)
                    gr.InterpolationMode = Drawing2D.InterpolationMode.Bilinear
                    gr.DrawImage(img, New Rectangle(0, 0, img.Width, img.Height))
                End Using
                newImage.Save(newFileName)
            End Using
        End Using

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