Question

我正在尝试将在同一文件夹中找到的所有图像调整为相同大小。这是我的代码，但它不起作用。请稍微帮忙（忽略“CombineImages（文件）;”这是该程序正常工作的另一种方法）

    private void cmdCombine_Click(object sender, EventArgs e)
    {
        //Change the path to location where your images are stored.
        DirectoryInfo directory = new DirectoryInfo(@"C:\Users\Elder Zollinger\Desktop\Images");
        if (directory != null)
        {
            FileInfo[] files = directory.GetFiles();
            ResizeImages(files);
            CombineImages(files);
        }

    private void ResizeImages(FileInfo[] files)
    {
        foreach (FileInfo file in files)
        {
            Image img = Image.FromFile(file.FullName);
            var newImage = ScaleImage(img, 200, 400);
        }   
    public static Image ScaleImage(Image image, int maxWidth, int maxHeight)
    {
        var ratioX = (double)maxWidth / image.Width;
        var ratioY = (double)maxHeight / image.Height;
        var ratio = Math.Min(ratioX, ratioY);

        var newWidth = (int)(image.Width * ratio);
        var newHeight = (int)(image.Height * ratio);

        var newImage = new Bitmap(newWidth, newHeight);
        Graphics.FromImage(newImage).DrawImage(image, 0, 0, newWidth, newHeight);
        return newImage;
    }

Answer 1

您没有保存已调整大小的图像。试试这个：

private void ResizeImages(FileInfo[] files)
{
    foreach (FileInfo file in files)
    {
        Image img = Image.FromFile(file.FullName);
        var newImage = ScaleImage(img, 200, 400);

        img.Dispose();

        newImage.Save(file.FullName);
    }   
}

您需要先处理原始图像，然后才能覆盖它。

调整文件夹中的所有图像的大小

1 个答案: