使用Visual C＃添加图像SQL数据库 [英] Adding an image to SQL database using Visual C#

问题描述

我对图像processing.I一个Visual C＃程序的工作正在尝试使用Visual C＃（Windows窗体）和ADO.NET为图像添加到SQL数据库。

I am working on a visual C# program for image processing.I am trying to add image to sql database using Visual C# (Windows forms) and ADO.NET.

我已经转换图像以二进制形式与方法FILESTREAM但图像字节没有得到保存在数据库中。在数据库image列，它说的＆LT;二进制数据> 的和没有数据被保存得到！

I have converted the image to binary form with filestream method but the image bytes are not getting saved in database. At the database image column, it says < Binary data > and no data is getting saved!

我试过很多方法，用于插入（有和没有储存procedures..etc），但总是在数据库中获取同样的事情。

I have tried many methods for inserting( with and without stored procedures..etc) but always getting the same thing at database.

private void button6_Click(object sender, EventArgs e)
{
   try
   {
      byte[] image = null;
      pictureBox2.ImageLocation = textBox1.Text;
      string filepath = textBox1.Text;
      FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read);
      BinaryReader br = new BinaryReader(fs);
      image = br.ReadBytes((int)fs.Length);
      string sql = " INSERT INTO ImageTable(Image) VALUES(@Imgg)";
      if (con.State != ConnectionState.Open)
         con.Open();
      SqlCommand cmd = new SqlCommand(sql, con);
      cmd.Parameters.Add(new SqlParameter("@Imgg", image));
      int x= cmd.ExecuteNonQuery();
      con.Close();
      MessageBox.Show(x.ToString() + "Image saved");
   }
}

我没有收到在code错误。形象得到转变和条目在数据库中完成，但表示＆LT;二进制数据>在SQL数据库中。

I am not getting error in code. the image got converted and entry is done in database but says < Binary Data > at the sql database.

推荐答案

选择的文件流应转换为字节数组。

The selected file stream should be converted to byte array.

        FileStream FS = new FileStream(filepath, FileMode.Open, FileAccess.Read); //create a file stream object associate to user selected file 
        byte[] img = new byte[FS.Length]; //create a byte array with size of user select file stream length
        FS.Read(img, 0, Convert.ToInt32(FS.Length));//read user selected file stream in to byte array

现在这工作正常。数据库仍然显示＆LT;二进制数据>但它可以使用MemoryStream的方法转换回图像。

Now this works fine. Database still shows < Binary data > but it could be converted back to image using memorystream method.

感谢所有...

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