Solved

Query MS SQL with C#

Posted on 2009-04-08
6
1,281 Views
Last Modified: 2013-12-17
I have added connection string to web.conf to query db with  C# to query /insert /updat to sql db. can any body help prviding me with working code that will query let's say select * from userTable. and display it on the webfile. I have set a website and havd .net framework 3.5 installed and using vs 2008.
<connectionStrings>
    <add key="ConnectionString" connectionString="Server=server; Database=db; uid=user; pwd=pass;" />
  </connectionStrings>

Open in new window

0
Comment
Question by:FD11
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 18

Accepted Solution

by:
philipjonathan earned 125 total points
ID: 24103399
From your visual studio, create a web form (let's say Test1.aspx).
Then open the code-behind file (Test1.aspx.cs), and find the Page_Load method.
Then fill it in with this code.

Btw, don't forget to include the following namespaces, if they are not yet included:
using System.Configurations;
using System.Data;
using System.Data.SqlClient;

void Page_Load(object source, EventArgs e)
{
  string connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
  SqlConnection connection = new SqlConnection(connectionString);
  connection.Open();
 
  string cmdText = "select * from userTable";
  SqlCommand cmd = new SqlCommand(cmdText, connection);
  SqlDataReader reader = cmd.ExecuteReader();
 
  while (reader.Read())
  {
    Response.Write(reader["column_name"].ToString() + "<br>");
  }
 
  reader.Close();
  connection.Close();
}

Open in new window

0
 
LVL 9

Expert Comment

by:Sreedhar Vengala
ID: 24103427
something like:

 string conn_str = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
            var myConnection = new SqlConnection(conn_str);
            myConnection.Open();
            var mySqlDataAdapter = new SqlDataAdapter("Select Top 10 * from Transactions", myConnection);

            var myDataSet = new DataSet();
            mySqlDataAdapter.Fill(myDataSet, "Transactions");
            foreach(DataRow myDataRow in myDataSet.Tables["Transactions"].Rows)
            {
                Response.Write(myDataRow["TransactionID"].ToString());
            }
0
 
LVL 9

Expert Comment

by:Sreedhar Vengala
ID: 24103443
also try to change your connectionstring to
  <add name="ConnectionString" connectionString="Server=server; Database=db; uid=user; pwd=pass;" />
0
How Do You Stack Up Against Your Peers?

With today’s modern enterprise so dependent on digital infrastructures, the impact of major incidents has increased dramatically. Grab the report now to gain insight into how your organization ranks against your peers and learn best-in-class strategies to resolve incidents.

 
LVL 18

Expert Comment

by:philipjonathan
ID: 24103477
As sree_ven mentioned, take note that you change 'key' to 'name' in the web.config.
<add name="ConnectionString" connectionString="Server=server; Database=db; uid=user; pwd=pass;" />
0
 

Author Comment

by:FD11
ID: 24109192
That works, thank you guys
How would I take the data from the query and display each record in my formated table such as table that I design in the .aspx file. I have done that with php, but not with .net.  links to good websites,  tutorials ..etc would be good. thanks again
0
 
LVL 9

Assisted Solution

by:Sreedhar Vengala
Sreedhar Vengala earned 125 total points
ID: 24111029
You can straight away bind dataset to GridView Control  ex: http://www.codersource.net/asp_net_grid_view_whidbey.aspx
as good way to learn is with videos (free) from : http://www.asp.net/LEARN/videos/
0

Featured Post

Why You Need a DevOps Toolchain

IT needs to deliver services with more agility and velocity. IT must roll out application features and innovations faster to keep up with customer demands, which is where a DevOps toolchain steps in. View the infographic to see why you need a DevOps toolchain.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
Wouldn’t it be nice if you could test whether an element is contained in an array by using a Contains method just like the one available on List objects? Wouldn’t it be good if you could write code like this? (CODE) In .NET 3.5, this is possible…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …

751 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question