TextFieldParser.ErrorLineNumber Property 

Returns the number of the line that caused the most recent MalformedLineException exception.

' Usage 
Dim value As Long = TextFieldParserObject.ErrorLineNumber
' Declaration
Public ReadOnly Property ErrorLineNumber As Long

Return Value

Long.

Exceptions

This property throws no exceptions.

Remarks

If no MalformedLineException exceptions have been thrown, -1 is returned.

The TextFieldParser.ErrorLine Property can be used to display the number of the line causing the exception. Blank lines and comments are not ignored when determining the line number.

Tasks

The following table lists examples of tasks involving the ErrorLineNumber property.

Example

This example uses the ErrorLineNumber property to display the location of the line causing the current MalformedLineException exception.

Dim FileReader As Microsoft.VisualBasic.FileIO.TextFieldParser
FileReader = My.Computer.FileSystem.OpenTextFieldParser("C:\test.txt")
Dim currentRow As String()
While Not FileReader.EndOfData
    Try
        currentRow = FileReader.ReadFields
        For Each currentField As String In currentRow
            My.Computer.FileSystem.WriteAllText _
            ("C://testfile.txt", currentField, True)
        Next
    Catch ex As Microsoft.VisualBasic.FileIO.MalformedLineException
        MsgBox("Line " & FileReader.ErrorLineNumber & " is not valid.")
    End Try
End While

Requirements

Namespace: Microsoft.VisualBasic.FileIO

Class: TextFieldParser

Assembly: Visual Basic Runtime Library (in Microsoft.VisualBasic.dll)

Permissions

No permissions are required.

See Also

Tasks

How to: Read From Text Files with Multiple Formats in Visual Basic
How to: Read From Fixed-width Text Files in Visual Basic
How to: Read From Comma-Delimited Text Files in Visual Basic
How to: Test Code with a Try…Catch Block in Visual Basic

Reference

TextFieldParser Object
Microsoft.VisualBasic.FileIO.TextFieldParser.ErrorLineNumber

Concepts

Parsing Text Files with the TextFieldParser Object