winform保存图片到数据库

 

        /// <summary>
        /// 保存

        /// </summary>
        private void btn_SaveLogo_Click(object sender, EventArgs e)
        {
            if (!string.IsNullOrEmpty(tbx_LogoPath.Text) && File.Exists(tbx_LogoPath.Text))
            {
                try
                {
                    byte[] imageByte = null;
                    FileStream fs = new FileStream(tbx_LogoPath.Text, FileMode.Open, FileAccess.Read);//图片转为数据流
                    imageByte = new byte[fs.Length];//定义数据长度
                    fs.Read(imageByte, 0, imageByte.Length);//读取数据流到数组
                    fs.Close();
                    string imageStream = Convert.ToBase64String(imageByte); //数据转字符串类型
                    CustomerMethod.SetParamName("logoPath", imageStream);//保存到数据库
                    MessageBox.Show("保存成功");
                    frmMain._logoUpdate = true;
                }
                catch
                {
                    MessageBox.Show("保存失败");
                }

            }
            else
            {
                MessageBox.Show("文件不存在!");
            }
        }

 

 

        /// <summary>
        /// 显示
        /// </summary>
        private void DisplayImage()
        {
            string logoPath = CustomerMethod.GetParamValue("logoPath");
            if (!string.IsNullOrEmpty(logoPath))
            {
                byte[] imageByte = Convert.FromBase64String(logoPath);
                MemoryStream ms = new MemoryStream(imageByte);
                pb_Logo.Image = Image.FromStream(ms);
            }
        }