The ErrObject module contains properties and procedures used to identify and handle run-time errors using the Err object.
Assembly: Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)
Thetype exposes the following members.
|Description||Returns or sets a String expression containing a descriptive string associated with an error. Read/write.|
|Erl||Returns an integer indicating the line number of the last executed statement. Read-only.|
|HelpContext||Returns or sets an Integer containing the context ID for a topic in a Help file. Read/write.|
|HelpFile||Returns or sets a String expression containing the fully qualified path to a Help file. Read/write.|
|LastDllError||Returns a system error code produced by a call to a dynamic-link library (DLL). Read-only.|
|Number||Returns or sets a numeric value specifying an error. Read/write.|
|Source||Returns or sets a String expression specifying the name of the object or application that originally generated the error. Read/write.|
|Clear||Clears all property settings of the Err object.|
|Equals(Object)||Determines whether the specified Object is equal to the current Object. (Inherited from Object.)|
|Finalize||Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)|
|GetException||Returns the exception representing the error that occurred.|
|GetHashCode||Serves as a hash function for a particular type. (Inherited from Object.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|MemberwiseClone||Creates a shallow copy of the current Object. (Inherited from Object.)|
|Raise||Generates a run-time error; can be used instead of the Error statement.|
|ToString||Returns a string that represents the current object. (Inherited from Object.)|
This example uses the properties of the Err object in constructing an error-message dialog box. Notice what happens when you use the Clear method first: When you then generate a Visual Basic error with the Raise method, Visual Basic's default values become the properties of the Err object.
Dim Msg As String ' If an error occurs, construct an error message. On Error Resume Next ' Defer error handling. Err.Clear Err.Raise(6) ' Generate an "Overflow" error. ' Check for error, then show message. If Err.Number <> 0 Then Msg = "Error # " & Str(Err.Number) & " was generated by " _ & Err.Source & ControlChars.CrLf & Err.Description MsgBox(Msg, MsgBoxStyle.Information, "Error") End If
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.