VBScript Reference Manual for InduSoft Web Studio

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VBScript Reference Manual InduSoft Web Studio Scripting Type Library The Scripting Type Library consists of the following item: • Dictionary Object The Dictionary object is part of the VBScript Scripting Library and is used to store name/value pairs (known as key/item respectively) in an array. The key is a unique identifier for the corresponding item. The key cannot be used of any other item in the same Dictionary object. A Dictionary object is similar to a normal array, except that instead of using a numeric index, a key is used. • FileSystemObject Object Model The FileSystemObject is an object model that is part of the VBScript Scripting Library and is used to gain access to a local computer or network share computer file system. It can access drives, folders and files Collections of drives, folders and files can also be retrieved. In addition, the FileSystemObject can create, write to and read Text files. o Drive object o Drives collection o File object o File collection o o Folder object Folder collection FileSystemObject o TextStream object Folder Object Drives Object Drives Object Folders Collection Drives Collection Folder Object Files Collection File Object File Object TextStream Object 212 InduSoft, Ltd.
InduSoft Web Studio VBScript Reference Manual Dictionary Object The dictionary object is contained in the Scripting Type library and is a general-purpose data structure that is a cross between a link list and an array. The dictionary stores data and makes the data accessible from one variable. The advantages of a dictionary over an array are: • You can use “keys” to identify items in the dictionary. Keys are usually strings or integers but can be any data type other than an array or a dictionary. Keys must be unique. • Methods are provided to add new items and check for existing items in the dictionary • The dictionary size can be changed without calling the ReDim statement • Automatically “shifts up” the remaining items when any item in the dictionary is deleted You can use a Dictionary when you need to access random elements frequently or need to access information contained in the array based on its value, not position. Dictionary Description Is an associative array that can store any type of data. Data is accessed by a key. Remarks Keys must be unique. Property CompareMode Description: Sets and returns the comparison mode for comparing a string keys in a Dictionary object. Arguments: Compare Optional. If provided, compare is a value representing the comparison mode. Values are: 0 = Binary 1 = Text 2 = Database Values >2 can be used to refer to comparisons using specific Locale IDs (LCID) Return: Comparison mode Remarks: An error occurs if you try to change the comparison mode of a Dictionary object that already has data Use Object.CompareMode[ = compare] Example: Dim d Set d = CreateObject(“Scripting.Dictionary”) d.CompareMode = vbTextCompare d.Add “a”, “Chicago” d.Add “b”, “New York” d.Add “A” = “Austin” ‘ Method fails because “b” already exists Property Count Description: Returns the number of items pairs in a Dictionary object. Usage: Object.Count Arguments: None Return: Integer value of the count of item pairs in a Dictionary object. Remarks: Read Only. Example: Dim d, item_count Set d = CreateObject(“Scripting.Dictionary”) d.Add “a”, “Chicago” d.Add “b”, “New York” item_count = d.Count ‘ Count the items in a Dictionary object MsgBox item_count InduSoft, Ltd. 213
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VBScript Reference Manual for InduSoft Web Studio

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