请高手帮忙进来看看

Question

查看方法
string sql="SELECT * FROM TestFiles WHERE ID = '" + Request.QueryString["ID"] + "'";
SqlConnection connection = new SqlConnection("Server=.;uid=sa;pwd=;Database=TestUploadFile");
SqlCommand command = new SqlCommand(sql, connection);
connection.Open();
SqlDataReader dr = command.ExecuteReader();
if(dr.Read()){
Response.Clear();
Response.AddHeader("Content-Type",dr["FileType"].ToString());
Response.BinaryWrite((byte[])dr["MyFile"]);
}
dr.Close();
connection.Close();

Answer 1

感谢楼上  我的查看方法是;using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;using System.IO;
using System.Data.SqlClient;public partial class Display : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string connString = ConfigurationManager.ConnectionStrings["Personal"].ConnectionString;
        int photoId = Convert.ToInt32(TextBox1.Text );
        SqlConnection connection = new SqlConnection(connString);        string sql = "SELECT  BytesOriginal FROM Photos WHERE PhotoID = "+ @photoId ;        SqlCommand command = new SqlCommand(sql, connection);
        command.Parameters.Add(new SqlParameter("@photoId", photoId));
       
        connection.Open();        Stream stream = null;
         object result = command.ExecuteScalar();
stream = new MemoryStream((byte[])result);
            const int buffersize = 1024 * 16;
            byte[] buffer = new byte[buffersize];
            int count = stream.Read(buffer, 0, buffersize);
            while (count > 0)
            {
                Response.OutputStream.Write(buffer, 0, count);
                count = stream.Read(buffer, 0, buffersize);
            }
    }
}