Saving and Displaying Photos in SQL Server using ASP.NET and FileUpload Control

      原文:   Saving and Displaying Photos in SQL Server using ASP.NET and FileUpload Control

主要是介绍在VS2005中如何将图片直接存入到数据库,当然利用了FileUpload这个控件

下面我把主要代码贴上来(已经测试过了,没什么问题):

Save:

protected void Button1_Click(object sender, EventArgs e)
    {
        if (FileUpload1.HasFile)
        { 
            using(BinaryReader reader = new BinaryReader(FileUpload1.PostedFile.InputStream))
            {
                byte[] image = reader.ReadBytes(FileUpload1.PostedFile.ContentLength);

                using (SqlConnection conn = new SqlConnection("server=.;database=IBatisNet;uid=sa;pwd="))
                {
                    using (SqlCommand command = conn.CreateCommand())
                    {
                        command.CommandText = @"INSERT INTO photo (photo) VALUES (@photo)";
                        command.Parameters.AddWithValue("@photo", image);
                        conn.Open();
                        command.ExecuteNonQuery();
                    }
                }
            }
        }
    }

Display:

protected void Button2_Click(object sender, EventArgs e)
    {
        Response.Clear();
        Response.ContentType = "image/jpeg";

        using (SqlConnection conn = new SqlConnection("server=.;database=IBatisNet;uid=sa;pwd="))
        {
            using (SqlCommand command = conn.CreateCommand())
            {
                command.CommandText = "select top 1 photo from photo";
                conn.Open();
                byte[] imageData = (byte[])command.ExecuteScalar();

                Response.BinaryWrite(imageData);
                
            }

        }
    }