如何从数据库到图片框检索图像..请帮助我.. !!!!!! 1 [英] how to retrieve image from database to picturebox.. Please HELP ME..!!!!!!1

问题描述

检索图像时出现错误-内存不足.

我用于搜索包括图像在内的所有字段的代码是---

I am getting error while retrieving image--Out of memory.

and my code for searching all fields including image is---

DataTable dt = new DataTable();
                dt = ds.Tables["StudentDetails"];
                if (pictureBox1.Image != null)
                {
                    pictureBox1.Image.Dispose();
                }
                FileStream FS1 = new FileStream("image.jpg", FileMode.Create);
                foreach (DataRow dataRow in dt.Rows)
                {
                    if (dataRow[1].ToString() == cboxStudent_ID.Text)
                    {
                        byte[] blob = (byte[])dataRow[54];
                        FS1.Write(blob, 0, blob.Length);
                        FS1.Close();
                        FS1 = null;
                        pictureBox1.Image = Image.FromFile("image.jpg");
                        pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
                    }
                }

推荐答案

您不需要这样做:您可以使用Memorystream将byte []转换为图像:

You don''t need to do that: you can just use a Memorystream to convert from a byte[] to an image:

MemoryStream ms = new MemoryStream(bytes);
Image returnImage = Image.FromStream(ms);

另一件事是，您需要查看将现有图像放置在循环内部而不是外部-您可能会或可能不会在循环内部找到您的ID.

The other thing is that you need to look at disposing the existing image inside the loop instead of outside - you may or may not find your ID inside the loop.

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