将图像保存到sql server 2008数据库问题？

Question

我尝试从c＃app保存图像时遇到以下错误消息。到SQL Server 2008数据库。

请注意，加载工作正常，问题在于保存。

请帮忙??

无法参数值从PictureBox的转换为字节[]

代码保存图像

private void saveLogo() 
      { 

     SqlConnection conn = new SqlConnection(dbcon.ReturnConnection()); 

      try 
      { 
     SqlCommand sqlCommand1 = conn.CreateCommand(); 
       sqlCommand1.CommandText = "INSERT INTO OrgLogo(ID,LogoName,Picture) values(@ID,@Name,@Picture)"; 

       conn.Open(); 
       if (sqlCommand1.Parameters.Count == 0) 
       {     
        sqlCommand1.Parameters.Add("@ID", System.Data.SqlDbType.Int, 4); 
        sqlCommand1.Parameters.Add("@Name", System.Data.SqlDbType.VarChar, 50); 
        sqlCommand1.Parameters.Add("@Picture", System.Data.SqlDbType.Image); 
       } 
      sqlCommand1.Parameters["@ID"].Value =Convert.ToInt32(editID.Text); 
      sqlCommand1.Parameters["@Name"].Value = editName.Text; 
      sqlCommand1.Parameters["@Picture"].Value = pictureBox1; 

      sqlCommand1.ExecuteNonQuery();    

      } 

      catch (Exception ex) 
      { 
       MessageBox.Show(ex.Message); 

      } 
      finally 
      { 
       conn.Close(); 

      } 
     } 

的代码来打开图像文件

protected void LoadLogoPic() 
     { 

      this.openFileDialog2.ShowDialog(); 

      string strFn = this.openFileDialog2.FileName; 
       this.pictureBox1.Image = Image.FromFile(strFn); 
       this.openFileDialog2.Filter = "All Files|*.*|BMP Files|*.bmp|JPG Files|*.jpg"; 
       FileInfo fiImage = new FileInfo(strFn); 
       m_lImageFileLength = fiImage.Length; 
       FileStream fs = new FileStream(strFn, FileMode.Open, FileAccess.Read, FileShare.Read); 
       m_barrImg = new byte[Convert.ToInt32(this.m_lImageFileLength)]; 
       int iBytesRead = fs.Read(m_barrImg, 0, Convert.ToInt32(this.m_lImageFileLength)); 
       fs.Close(); 



     } 

Answer 1

试试这个方法;

Image img = picturebox1.Image(); 
byte[] arr; 
ImageConverter converter = new ImageConverter(); 
arr=(byte[])converter.ConvertTo(img, typeof(byte[])); 

command.CommandText = "INSERT INTO ImagesTable (Image) VALUES('" + arr + "')"; 
command.CommandType = CommandType.Text; 
command.ExecuteNonQuery();