检查的图像的宽度和高度 [英] Check the width and height of an image

问题描述

我能够不通过下面的代码检查文件大小来显示图片框的图片：

I am able to display the picture in the picture box without checking the file size by the following code:

private void button3_Click_1(object sender, EventArgs e)
{
    try
    {
        //Getting The Image From The System
        OpenFileDialog open = new OpenFileDialog();
        open.Filter =
          "Image Files(*.jpg; *.jpeg; *.gif; *.bmp)|*.jpg; *.jpeg; *.gif; *.bmp";

        if (open.ShowDialog() == DialogResult.OK)
        {
            Bitmap img = new Bitmap(open.FileName);

            pictureBox2.Image = img;
        }
    }
    catch (Exception)
    {
        throw new ApplicationException("Failed loading image");
    }
}

我要检查，例如图像大小是否在图片框中显示之前的 2MB或4MB 。我也想检查宽度和高度的形象。

I want to check the image size for example whether it is 2MB or 4MB before displaying in the picture box. i also want to check the width and height of the image.

推荐答案

借助 位图 将保存图像的高度和宽度。

The Bitmap will hold the height and width of the image.

使用的 的FileInfo 长度属性来获取文件的大小。

Use the FileInfo Length property to get the file size.

FileInfo file = new FileInfo(open.FileName);
var sizeInBytes = file.Length;

Bitmap img = new Bitmap(open.FileName);

var imageHeight = img.Height;
var imageWidth = img.Width;

pictureBox2.Image = img;

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