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An Overview of ASP.NET
Connections, Commands, And Procedures
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ASP Source Code: 
<%
'------------------------------------------------------------------------------
Function SQLPrep_s(ByVal StringValue, ByRef MaxLength)
	If MaxLength > 0 Then
		StringValue = Left(StringValue, MaxLength)
	End If
	StringValue = Replace(StringValue, "'", "''")
	If StringValue = "" Then
		SQLPrep_s = "NULL"
	Else
		SQLPrep_s = "'" & StringValue & "'"
	End If
End Function
'------------------------------------------------------------------------------
Function SQLPrep_n(ByVal NumericValue)
	If IsNumeric(NumericValue) And NumericValue <> "" Then
		SQLPrep_n = NumericValue
	Else
		SQLPrep_n = "NULL"
	End If
End Function
'------------------------------------------------------------------------------
Function SQLPrep_b(ByVal BooleanValue, ByRef DefaultValue)
	Const DB_TRUE = 1	'1 = SQL, -1 = Access
	Const DB_FALSE = 0
	Dim lbResults
	On Error Resume Next
	If BooleanValue = "" Then BooleanValue = DefaultValue
	lbResults = Cbool(BooleanValue)
	If Err Then
		Err.Clear
		lbResults = DefaultValue
	End If
	If lbResults Then
		SQLPrep_b = DB_TRUE
	Else
		SQLPrep_b = DB_FALSE
	End If
End Function
'------------------------------------------------------------------------------
Function SQLPrep_d(ByVal DateValue)
	If IsDate(DateValue) Then
		SQLPrep_d = "'" & DateValue & "'"
	Else
		SQLPrep_d = "NULL"
	End If
End Function
'------------------------------------------------------------------------------
Function SQLPrep_c(ByVal CurrencyValue)
	On Error Resume Next
	If CurrencyValue = "" Then
		CurrencyValue = "NULL"
	Else
		CurrencyValue = CCur(CurrencyValue)
		If Err Then
			Err.Clear
			CurrencyValue = "NULL"
		End If
	End If
	SQLPrep_c = CurrencyValue
End Function
'------------------------------------------------------------------------------
%>
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