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Information Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

The Information module contains the procedures used to return, test for, or verify information.

Inheritance Hierarchy

System.Object
  Microsoft.VisualBasic.Information

Namespace:  Microsoft.VisualBasic
Assembly:  Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

Syntax

'Declaration
<StandardModuleAttribute> _
Public NotInheritable Class Information
[StandardModuleAttribute]
public sealed class Information

The Information type exposes the following members.

Methods

  Name Description
Public method Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Public methodStatic member Erl Returns an integer indicating the line number of the last executed statement. Read-only.
Public methodStatic member Err Contains information about run-time errors.
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Public methodStatic member IsArray Returns a Boolean value indicating whether a variable points to an array.
Public methodStatic member IsDate Returns a Boolean value indicating whether an expression represents a valid Date value.
Public methodStatic member IsDBNull Returns a Boolean value indicating whether an expression evaluates to the System.DBNull class.
Public methodStatic member IsError Returns a Boolean value indicating whether an expression is an exception type.
Public methodStatic member IsNothing Returns a Boolean value indicating whether an expression has no object assigned to it.
Public methodStatic member IsReference Returns a Boolean value indicating whether an expression evaluates to a reference type.
Public methodStatic member LBound Returns the lowest available subscript for the indicated dimension of an array.
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method ToString Returns a string that represents the current object. (Inherited from Object.)
Public methodStatic member UBound Returns the highest available subscript for the indicated dimension of an array.
Public methodStatic member VarType Returns an Integer value containing the data type classification of a variable.

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Remarks

This module supports the Visual Basic language keywords and run-time library members that provide error information, validate data, determine array bounds, and retrieve data type and color information.

Examples

The following example uses the VbTypeName function to return data type names for several variables.

Dim sysDateName As String = "System.DateTime"
Dim sysShortName As String = "Int16"
Dim sysBadName As String = "Nonsense"
Dim testVbName As String
testVbName = VbTypeName(sysDateName) 
' Returns "Date".
testVbName = VbTypeName(sysShortName) 
' Returns "Short".
testVbName = VbTypeName(sysBadName) 
' Returns Nothing.

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference