C#asp.net与Wnfrom常见问题实例

1.怎么样把图片保存成字节？                                                                                                                                                                        

第一种方式

    //Save image from PictureBox into MemoryStream object.
    MemoryStream ms  = new MemoryStream();
    pictureBox1.Image.Save(ms, ImageFormat.Jpeg);

    //Read from MemoryStream into Byte array.
    Byte[] bytBLOBData = new Byte[ms.Length];
    ms.Position = 0;
    ms.Read(bytBLOBData, 0, Convert.ToInt32(ms.Length));

 

bytBLOBData就是你要的字节数组了

 

第二种方式

            codeMemoryStream ms = new MemoryStream();
            pictureBox1.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);
            byte[] bytes = ms.GetBuffer();
            ms.Close();
            ms.Dispose();

 

bytes就是你想要的字节数组了

 2.C#是怎么们存取图片的？

 

     小谈c#数据库存取图片的方式

3.怎么样强制清理界面缓存

 

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