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TextFieldParser.ErrorLineNumber Property

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

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

public long ErrorLineNumber { get; }

Property Value

Type: System.Int64
The number of the line that caused the most recent MalformedLineException exception.

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

The ErrorLine property can be used to display the number of the line that caused the exception. Blank lines and comments are not ignored when determining the line number.

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

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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