如何显示图片预览？ 若要更改pictureBox的大小并将其移动到窗体的中心

Question

This is the code in Form1:

private void timer1_Tick(object sender, EventArgs e)
        {
            try
            {

                pictureBox1.Load(file_array_satellite[file_indxs_satellite]);
                //label12.Visible = true;
                //label12.Text = "Satellite files date and time: " + File.GetCreationTime(file_array_satellite[file_indxs_satellite]);
                file_indxs_satellite = file_indxs_satellite - 1;
                //pictureBox1.Load(file_array[file_indexs]);
                //label10.Visible = true;
                //label10.Text = "Radar files date and time: " + File.GetCreationTime(file_array[file_indexs]);
                file_indxs_satellite = file_indxs_satellite - 1;
                if (file_indxs_satellite < 0)
                {
                    file_indxs_satellite = file_array_satellite.Length - 1;
                }
                if (file_indxs_satellite < 0)
                {
                    file_indxs_satellite = file_array_satellite.Length - 1;
                }
            }
            catch
            {
                timer1.Enabled = false;
            }
        }

        private void satellitesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            file_array_satellite = Directory.GetFiles(UrlsPath, "RainImage*.*");
            for (int i = 0; i < file_array_satellite.Length; i++)
            {
                Image s = new Bitmap(file_array_satellite[i]);
                s = resizeImage(s, new Size(100, 100));
                s.Save(UrlsPath + "Changed" + i.ToString("D6") + ".jpg");
            }
            file_array_satellite = Directory.GetFiles(UrlsPath, "Changed*.*");
            if (file_array_satellite.Length > 0)
            {
                DateTime[] creationTimes8 = new DateTime[file_array_satellite.Length];
                for (int i = 0; i < file_array_satellite.Length; i++)
                    creationTimes8[i] = new FileInfo(file_array_satellite[i]).CreationTime;
                Array.Sort(creationTimes8, file_array_satellite);
                file_indxs_satellite = 0;
                file_indxs_satellite = file_array_satellite.Length - 1;
                timer1.Enabled = true;
            }
        }

        public static Image resizeImage(Image imgToResize, Size size)
        {
            return (Image)(new Bitmap(imgToResize, size));
        }

        private void pictureBox1_MouseEnter(object sender, EventArgs e)
        {

        }

In top of form1:

string[] file_array_satellite;
int file_indxs_satellite;

In constructor:

localFilename = @"d:\localpath\";
UrlsPath = @"d:\localpath\Urls\";

What i want to do is when i move the mouse over the pictureBox1 area the pictureBox will be resized to for example 400x400 and will show the image in the pictureBox1 in the resized size in this case 400x400.

Like a preview . When i move over with the mouse the animation will keep moving/playing but the pictureBox will be in the middle of the form and a bigger size like 400x400 .

How can i do it ? What should i do in the pictureBox1_MouseEnter event ?

Edit**

Tried this:

private void pictureBox1_MouseEnter(object sender, EventArgs e)
        {
            pictureBox1.Location = new Point(this.Bounds.Width / 2,
                            this.Bounds.Height / 2);
            this.pictureBox1.Size = new Size(500, 500);
            this.pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
            pictureBox1.BringToFront();
        }

But the pictureBox is not in the center and the size is not changed. Why ? In the original the pictureBox size is 100,100 also the files on hard disk i change them to 100,100 and it's working good !

Once i move the mouse over the pictureBox it's not moving to the center and not resize to 500,500.

The form1 size is 800,600

I want the pictureBox to show in the center of the Form and to be bigger size 500,500 or 700,500

What's wrong ?

Answer 1

you should resize image by PictureBox.SizeMode property , so the image will fill the PictureBox. And then use MouseEnter and MouseLeave events to resize the PictureBox. It will be resized with the picture inside.