protected void btn_Click(object sender, EventArgs e)
{
T_UserTableAdapter adapter = new T_UserTableAdapter();
var data = adapter.GetDataByUserName(usrName.Text);
if (data.Count <= 0)
{
ErrorMsg.Text = "用户名不存在";
ErrorMsg.Visible = true;
}
else
{
var user = data.Single();//返回唯一一天数据，否则抛出异常
if (user.FPassword == password.Text)
{
ErrorMsg.Text = "登陆成功";
//登陆用户信息存到session中
Session["isLogin"] = true;
Session["loginUsrId"] = user.Id;
//将用户重定向到下载页面
Response.Redirect("downLoadList.htm");
}
else
{
ErrorMsg.Text = "密码错误";
ErrorMsg.Visible = true;
}
}
}
public void ProcessRequest(HttpContext context)
{
if (context.Session["isLogin"] != null)
{
//输出格式
context.Response.ContentType = "image/JPEG";
//添加报文头
string fileName = context.Request["FileName"];
string encodeFilename = HttpUtility.UrlEncode(fileName);
context.Response.AddHeader("Content-Disposition", "attachment;filename=" + encodeFilename);
//核对下载权限
int usrId = (int)context.Session["loginUsrId"];
T_UserTableAdapter adapter = new T_UserTableAdapter();
var data = adapter.GetDataById(usrId);
var usr = data.Single();
if (usr.FLevel == 0)//普通用户
{
}
else //收费用户
{
context.Response.WriteFile("images/" + fileName);
}
}
else
{
context.Response.Redirect("login.aspx");
//提示未登录
}
}
