VBScript Reference Manual for InduSoft Web Studio

VBScript Reference Manual InduSoft Web Studio
Other extrinsic objects include ActiveX Objects, ADO.NET, and OLE Automation Objects such as
Microsoft Office applications and components. These objects use a different statement format for
instantiation. They use either the CreateObject or GetObject functions. For example:
Set cObj = CreateObject(“ADODB.Connection”)
Set xlObj = CreateObject(“Excel.Application”)
Set xlBook = GetObject(“C:\Test.XLS”)
The difference between CreateObject and GetObject is that CreateObject is used to create an interface
to a new instance of an application (or object) while the GetObject is used with an application that is
already loaded.
To declare constants, you use the Const statement. An example is:
Const mySetting = 100
As previously discussed, constants have scope. The scope of a constant can be modified by adding
either the keyword Public or Private in front of the Const declaration.
Key Notes:
• All Arrays in VBScript are zero-based, meaning that the array myArray(10) really has 11
elements. Unlike VB or VBA, all arrays in VBScript are zero-based.
• Arrays, Objects (except implicit Err Object) and Named Constants must be declared.
• Using Option Explicit forces all variables to be declared. This helps prevent runtime
errors due to mis-typing.
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