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POConnect to SQL Server 2012 Database with C# (Visual Studio 2012)
 

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  1. POConnect to SQL Server 2012 Database with C# (Visual Studio 2012)
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    <p>Evening all,</p> <p>I'm trying to connect to a SQL Server 2012 database from C#. My connection settings when using SQL Server Management Studio are as below:-</p> <pre><code>Server Type: Database Engine Server Name: Paul-PC\SQLEXPRESS Authentication: Windows Authentication Username: Greyed out Password: Greyed out </code></pre> <p>The name of the database I'm trying to connect to is "testDB".</p> <p>Here's my code:</p> <pre><code>using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Data.SqlClient; namespace DatabaseConnection { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void btnConnect_Click(object sender, EventArgs e) { SqlConnection myConnection = new SqlConnection("server=localhost;" + "Trusted_Connection=yes;" + "database=testDB; " + "connection timeout=30"); try { myConnection.Open(); MessageBox.Show("Well done!"); } catch(SqlException ex) { MessageBox.Show("You failed!" + ex.Message); } } } } </code></pre> <p>Unfortunately, my code fails to connect with the following error:-</p> <p>"You failed!A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections."</p> <p>Any suggestions? SQL Server is running locally.</p>
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    1. COMake sure your SQL server service is running behind
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    2. CO1. Does it do the same error if you do `(local)` instead of `localhost` for the server? 2. Can you open the server in Sql Server Management Studio?
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    3. CO@Shaharyar what do you mean by this? I have checked services.msc and SQL Server is running.
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