TextFieldParser.ErrorLineNumber Property

Reference

Definition

Namespace:: Microsoft.VisualBasic.FileIO

Assembly:: Microsoft.VisualBasic.Core.dll

Assembly:: Microsoft.VisualBasic.dll

Source:: TextFieldParser.vb

Source:: TextFieldParser.vb

Source:: TextFieldParser.vb

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

public:
 property long ErrorLineNumber { long get(); };

public long ErrorLineNumber { get; }

member this.ErrorLineNumber : int64

Public ReadOnly Property ErrorLineNumber As Long

Property Value

Int64

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

Examples

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

Remarks

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.

To	See
Read from a delimited file	How to: Read From Comma-Delimited Text Files
Read from a fixed-width file	How to: Read From Fixed-width Text Files

Applies to

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