获取Picturebox内缩放图像的精确大小

Question

我正在使用WinForms.在我的表格中我有一个picturebox.它的sizemode设置为Zoom.如果我将图像加载到picturebox图像中将根据picturebox尺寸进行缩放.

我想知道如何在内部获得缩放图像的大小picturebox.

这些是我尝试过的一些东西,但这并没有给我我想要的结果.

    private void Debug_Write_Click(object sender, EventArgs e)
    {
        //var pictureWidth = pictureBox1.ClientSize.Width; //This gives the size of the picturebox
        //var picturewidth1 = pictureBox1.Image.Width; This gives the actual size of the image


        //var pictureHight = pictureBox1.ClientSize.Height; //This gives the size of the picturebox
        //var pictureHight1 = pictureBox1.ClientSize.Height; This gives the actual size of the image

        Debug.WriteLine("Width: " + pictureWidth.ToString() + " Height: " + pictureHight.ToString());
    }

示例:图像的实际大小

Picturebox大小模式设置为Zoom,因此它根据我的picturebox大小缩放图像:

如何找到此图像的缩放长度和宽度？

Answer 1

你应该做数学!

Image img = //...;
PictureBox pb = //...;

var wfactor = (double)img.Width / pb.ClientSize.Width;
var hfactor = (double)img.Height / pb.ClientSize.Height;

var resizeFactor = Math.Max(wfactor, hfactor);
var imageSize = new Size((int)(img.Width / resizeFactor), (int)(img.Height / resizeFactor));