I have a problem with my login system. I made a simple system which worked well, but I wanted to make it more advanced and display a different start page depending on a user's UserType
. However, I'm encountering the following error: "Must declare the scalar variable @UserType."
using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
public partial class LoginwithEncryption : System.Web.UI.Page
{
protected void btnSubmit_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["conStr"].ConnectionString);
con.Open();
SqlCommand cmd = new SqlCommand(
"select * from dbo.UserInfo where Login =@Login and UserType=@UserType and Password=@Password and UserType=@UserType", con);
cmd.Parameters.AddWithValue("@Login", txtUserName.Text);
cmd.Parameters.AddWithValue("@Password", txtPWD.Text+".123");
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count > 0)
{
int usertype = Convert.ToInt32(dt.Rows[0]["UserType"]);
if (usertype == 1)
{
Response.Redirect("StartPage.aspx");
}
else if (usertype == 2)
{
Response.Redirect("DiferentStartPage.aspx");
}
}
else
{
ClientScript.RegisterStartupScript(Page.GetType(), "validation",
"<script language='javascript'>alert('Invalid UserName and Password')</script>");
}
}
}
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