RecordExists(String,Dictionary<String,Object>) Method

Visual Basic (Declaration)
Visual Basic (Usage)
C#
Managed Extensions for C++
C++/CLI

Overloads Function RecordExists( _
   ByVal sql As String, _
   ByVal parameters As Dictionary(Of String,Object) _
) As Boolean

Dim instance As IDataHelper
Dim sql As String
Dim parameters As Dictionary(Of String,Object)
Dim value As Boolean
 
value = instance.RecordExists(sql, parameters)

bool RecordExists( 
   string sql,
   Dictionary<string,object> parameters
)

bool RecordExists( 
   string* sql,
   Dictionary<string*,Object*>* parameters
)

bool RecordExists( 
   String^ sql,
   Dictionary<String^,Object^>^ parameters
)

Parameters

sql: The parameterized SQL to execute
parameters: The parameters for the SQL

Return Value

True if there are any records

C#

//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);
 
Dictionary<string, object> parameters = new Dictionary<string, object>();
parameters.Add("FirstName", "John");
parameters.Add("LastName", "Smith");
 
string sql = "SELECT * FROM PERSONS WHERE FirstName=@FirstName and LastName=@LastName";
 
bool exists = db.RecordExists(sql,parameters);
 
db.CloseConnection();

VB.NET

'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 parameters As New Dictionary(Of String, Object)()
parameters.Add("FirstName", "John")
parameters.Add("LastName", "Smith")
 
Dim sql As String = "SELECT * FROM PERSONS WHERE FirstName=@FirstName and LastName=@LastName"
 
Dim exists As Boolean = db.RecordExists(sql,parameters)
 
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

Reference

IDataHelper Interface
IDataHelper Members
Overload List