Sage.Accounting.Application application = null;

try
{
        application = new Sage.Accounting.Application();
        
        application.Connect("3", "");
        
        application.ActiveCompany = application.Companies[1];
        
        // Create an instnace of the model I want - in this case "Sage 200 Accounts"
        DataModel model = (new DataModelProvider()).CreateNew("Sage 200 Accounts",null);
        
        // Bind the connection
        bool bound=model.BindConnection(null);
        
        //Retrieve the context from the model
        Sage.Accounting.DataModel.DataContext context=(Sage.Accounting.DataModel.DataContext)(model.ModelContext);
        
        // The context for the Sage 200 Accounts model contains all of the entities you would expect
        // in addition to many calculated fields and projections
        context.SLCustomerAccounts.Select(
                s=>new
                {
                        s.SLCustomerAccountID,
                        s.CustomerAccountNumber,
                        s.CustomerAccountShortName,
                        s.AccountBalance,
                        s.CreditLimit,
                        s.SYSCurrencyID
                }
        )
        .Dump();
}
catch (System.Exception exception)
{
        exception.Message.Dump();
}
finally
{
        if (application != null)
        {
                application.Disconnect();
        }
}

Using code to read data from model

data

C#