TextFieldParser.FieldWidths Property

public:
 property cli::array <int> ^ FieldWidths { cli::array <int> ^ get(); void set(cli::array <int> ^ value); };

public int[]? FieldWidths { get; set; }

public int[] FieldWidths { get; set; }

member this.FieldWidths : int[] with get, set

Public Property FieldWidths As Integer()

Property Value

An integer array that contains the width of each column in the text file that is being parsed.

Exceptions

Examples

This example reads the file ParserText.txt, specifying the widths; the first column is 5 characters wide, the second is 10, the third is 11, and the fourth is of variable width

Using MyReader As New Microsoft.VisualBasic.FileIO.
 TextFieldParser("C:\ParserText.txt")

 MyReader.TextFieldType = 
 Microsoft.VisualBasic.FileIO.FieldType.FixedWidth
 MyReader.FieldWidths = {5, 10, 11, -1}
 Dim currentRow As String()
 While Not MyReader.EndOfData
 Try
 currentRow = MyReader.ReadFields()
 Dim currentField As String
 For Each currentField In currentRow
 MsgBox(currentField)
 Next
 Catch ex As Microsoft.VisualBasic.FileIO.MalformedLineException
 MsgBox("Line " & ex.Message & 
 "is not valid and will be skipped.")
 End Try
 End While
End Using

Remarks

This property is meaningful only if the TextFieldType property is set to FieldType.FixedWidth. If the last entry in the array is less than or equal to zero, the field is assumed to be of variable width.

The SetFieldWidths method can also be used to set field widths.

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

See also

• OpenTextFieldParser(String)
• FieldType
• Objects (Visual Basic)
• How to: Read From a Fixed-width Text File in Visual Basic
• How to: Read From a Comma-Delimited Text File in Visual Basic
• How to: Read From a Text File with Multiple Formats in Visual Basic
• Parsing Text Files with the TextFieldParser Object
• Troubleshooting Exceptions: Microsoft.VisualBasic.FileIO.TextFieldParser.MalformedLineException