Dim instance As IDataHelper Dim sql As String Dim value As Boolean value = instance.RecordExists(sql)
Parameters
- sql
- The SQL to execute
Return Value
True if one ore more records exist
Dim instance As IDataHelper Dim sql As String Dim value As Boolean value = instance.RecordExists(sql)
//Get the current thread static safe instance of the helper IDataHelper db = DataHelper.SessionFactory(); //Specify User Name and License Key from the receipt, leave blank for trial mode //db.UserName = "John Smith 1234"; //db.LicenseKey = "asdfl219=="; //Log to the console db.EnableLogging(); //Open the database connection db.OpenConnection(); //Create a new Person to save to the database Person currentPerson = new Person(); currentPerson.FirstName = "John"; currentPerson.LastName = "Smith"; //Save it to the database db.Save(currentPerson); string sql = "select * from persons"; bool exists = db.RecordExists(sql); db.CloseConnection();
'Get the current thread static safe instance of the helper Dim db As IDataHelper = DataHelper.SessionFactory() 'Specify User Name and License Key from the receipt, leave blank for trial mode 'db.UserName = "John Smith 1234" 'db.LicenseKey = "asdfl219==" 'Log to the console db.EnableLogging() 'Open the database connection db.OpenConnection() 'Create a new Person to save to the database Dim currentPerson As New Person() currentPerson.FirstName = "John" currentPerson.LastName = "Smith" 'Save it to the database db.Save(currentPerson) Dim sql As String = "select * from persons" Dim exists As Boolean = db.RecordExists(sql) db.CloseConnection()
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2