DSN-less connections

A DSN-less connection enables you to specify the required parameters, such as the driver name, authentication details, and server information, directly in a connection string without having to configure a DSN in the ODBC Data Source Administrator.

Create a DSN-less connection

You can create a DSN-less connection by directly specifying all the connection parameters in the string.

Example for a password-based authentication

DRIVER={Devart ODBC Driver for Dynamics 365};Server=https://dynamicsaccount.crm.dynamics.com;User ID=your_dynamics_username;Password=your_dynamics_password

The connection string contains the following parameters:

• Driver – The driver name.
• Server – The Dynamics 365 server you are connecting to.
• User ID – The Dynamics 365 username.
• Password – The Dynamics 365 password.

Example for OAuth authentication

DRIVER={Devart ODBC Driver for Dynamics 365};Authentication=OAuth;Server=https://dynamicsaccount.crm.dynamics.com;Refresh Token=your_dynamics_refresh_token

The connection string contains the following parameters:

• Driver – The driver name.
• Authentication – Authentication type.
• Server – The Dynamics 365 server you are connecting to.
• Refresh Token – The refresh token for your Dynamics 365 account.

Example for proxy authentication

DRIVER={Devart ODBC Driver for Dynamics 365};Server=https://dynamicsaccount.crm.dynamics.com;User ID=your_dynamics_username;Password=your_dynamics_password;Proxy Server=your_proxy_server;Proxy Port=8080;Proxy User=your_proxy_username;Proxy Password=your_proxy_password

The connection string contains the following parameters:

• Driver – The driver name.
• Server – The Dynamics 365 server you are connecting to.
• User ID – The Dynamics 365 username.
• ProxyServer – The proxy hostname or IP address.
• ProxyPort – The proxy port.
• ProxyUser – The proxy username.
• ProxyPassword – The proxy password.

Test the connection

You can test the DSN-less connection by running your application or using tools such as isql or ODBC Test to verify that the connection is established successfully.

The following example uses the New-Object cmdlet to create an ODBC connection.

$ConnectionString = "DRIVER={Devart ODBC Driver for Dynamics 365};Server=https://dynamicsaccount.crm.dynamics.com;User ID=your_dynamics_username;Password=your_dynamics_password"

try {
    $conn = New-Object System.Data.Odbc.OdbcConnection
    $conn.ConnectionString = $ConnectionString
    $conn.Open()
    Write-Host "Connection successful!"
    $conn.Close()
} catch {
    Write-Host "Connection failed: $_"
}

Additional parameters

Devart ODBC Driver for Dynamics 365 allows configuring additional parameters to customize the connection and the driver’s behavior. For a full list of available parameters, see Dynamics 365 ODBC connection string parameters.

Use a DSN-less connection in a .NET application

using System;
using System.Data.Odbc;

class Program
{
    static void Main()
    {
        string connectionString = "";
        
        using (OdbcConnection connection = new OdbcConnection(connectionString))
        {
            connection.Open();
            Console.WriteLine("Connected to Dynamics 365!");
            
            // Perform your queries or operations here.
        }
    }
}