How to connect database file in my ASP.NET project

Question

1.00/5 (1 vote)

See more:

I have resotred database when i conect sql it show server name blank i enterd [.] dot it connect.
when i run my asp.net web application its show instance error.

my connection string is:
<add name="WarehouseWebsiteString" connectionString="Data Source=hostingmssql10;Network Library=dbmssocn;Connection Timeout=15;Packet Size=4096;Integrated Security=no;User ID=bea3de-warehousebissdscom; Encrypt=no;Initial Catalog=bea3de-warehousebissdscom; Password=1234;"
providerName="System.Data.SqlClient"/>

i have create login page using database but it not login give error

What I have tried:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Security;
using System.Data.SqlClient;
using System.Web.Configuration;

public partial class AdminLogin : System.Web.UI.Page
{
SqlConnection con = new SqlConnection(WebConfigurationManager.ConnectionStrings["WarehouseWebsiteString"].ToString());
protected void Page_Load(object sender, EventArgs e)
{
error.Visible = false;

}

protected void imgBtnLogin_Click(object sender, ImageClickEventArgs e)
{
try
{
using (con = new SqlConnection(WebConfigurationManager.ConnectionStrings["WarehouseWebsiteString"].ToString()))
{

//string username = txtUserName.Text;
//string password = txtPassword.Text;

con.Open();
string qry = "select * from tblLoginDetails where UserName='" + txtUserName.Text + "' and Password='" + txtPassword.Text + "'";
SqlCommand cmd = new SqlCommand(qry, con);
int count = Convert.ToInt32(cmd.ExecuteScalar());

if (count == 1)
{
Session["UserName"] = txtUserName.Text.Trim();
Response.Redirect("~/Admin/Default.aspx");
error.Visible = false;
}
else
{
error.Visible = true;

}

}
con.Close();
}
catch (Exception ex)
{
Response.Write(ex.Message);
}

}
}

but it not work i dont understand where i do change.

Posted 4-Apr-18 0:03am

Deekshaa Singh Chauhan

Updated 2-May-18 2:47am

Add a Solution

Comments

F-ES Sitecore 4-Apr-18 6:40am

You have to make sure the datasource parameter is correct for the sql database you're connecting to and we can't tell you what that is, you have access to it and we don't. It could be you're missing the instance name (something like myserver\sql2016) but again we don't know if your server uses an instance name or not. If using the dot works then stick with that.

Afzaal Ahmad Zeeshan 4-Apr-18 7:00am

Do you get any error?

Dave Kreskowiak 4-Apr-18 8:21am

Your connection string is wrong, but since you haven't shown us that string, it's impossible to tell you exactly what's wrong with it.

Oh, and don't reply to posts by typing your reply into a Solution. Hover the mouse over the post you want to reply to and a Reply button will show up. Click that.

Richard Deeming 4-Apr-18 12:13pm

Your code is vulnerable to SQL Injection[^]. NEVER use string concatenation to build a SQL query. ALWAYS use a parameterized query.

Everything you wanted to know about SQL injection (but were afraid to ask) | Troy Hunt[^]
How can I explain SQL injection without technical jargon? | Information Security Stack Exchange[^]
Query Parameterization Cheat Sheet | OWASP[^]

NEVER store passwords in plain text:
Secure Password Authentication Explained Simply[^]
Salted Password Hashing - Doing it Right[^]

And why are you re-inventing the wheel? ASP.NET has several perfectly good authentication systems built-in - for example, ASP.NET Identity[^]

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Deekshaa Singh Chauhan · Accepted Answer · 2018-05-02T02:48:00

When i do this in configration file It working properly:-

<connectionStrings>
  <!--<add name="WarehouseWebsiteString" connectionString="Data Source=BISWEBSERVER\SQLSERVER2005; DataBase=Warehouse; User Id=sa; Password=xfiles_76;"/>-->
  <add name="WarehouseWebsiteString" connectionString="Data Source=. ;Network Library=dbmssocn;Connection Timeout=15;Packet Size=4096;Integrated Security=no;User ID=warehousebissdscom; Encrypt=no;Initial Catalog=warehousebissdscom; Password=123;Trusted_Connection=true;"/>
</connectionStrings>