Viacheslav Eremin | Visual Basic Language Reference

Returns the lowest available subscript for the indicated dimension of an array.

Public Function LBound( _
   ByVal Array As System.Array, _
   Optional ByVal Rank As Integer = 1 _
) As Integer

Parameters

Array: Required. Array of any data type. The array in which you want to find the lowest possible subscript of a dimension.
Rank: Optional. Integer. The dimension for which the lowest possible subscript is to be returned. Use 1 for the first dimension, 2 for the second, and so on. If Rank is omitted, 1 is assumed.

Exceptions/Errors

Exception type	Error number	Condition
ArgumentNullException	9	Array is Nothing.
RankException	9	Rank < 1 or Rank is greater than the rank of Array.

Remarks

Since array subscripts start at 0, the lowest available subscript for every dimension is always 0.

For an array with the following dimensions, LBound returns the values in the following table:

Dim A(100, 5, 4) As Byte

Call to LBound	Return value
`LBound(A, 1)`	0
`LBound(A, 2)`	0
`LBound(A, 3)`	0

Example

This example uses the LBound function to determine the lowest available subscript for the indicated dimension of an array.

Dim Lowest, MyArray(10, 15, 20), AnyArray(6) as Integer
Lowest = LBound(MyArray, 1)   ' Returns 0.
Lowest = LBound(MyArray, 3)   ' Returns 0.
Lowest = LBound(AnyArray)   ' Returns 0.

LBound Function

Parameters

Exceptions/Errors

Remarks

Example

See Also