InStr(Int32,String,String,CompareMethod) Method

Returns an integer specifying the start position of the first occurrence of one string within another.

Syntax

Visual Basic
C#

'Declaration
 
Public Overloads Shared Function InStr( _
   ByVal start As Integer, _
   ByVal string1 As String, _
   ByVal string2 As String, _
   Optional ByVal compare As CompareMethod _
) As Integer

public static int InStr( 
   int start,
   string string1,
   string string2,
   CompareMethod compare
)

Parameters

start: Optional. Numeric expression that sets the starting position for each search. If omitted, search begins at the first character position. The start index is 1-based.
string1: Required. String expression being searched.
string2: Required. String expression sought.
compare: Optional. Specifies the type of string comparison. If compare is omitted, the Option Compare setting determines the type of comparison.

Return Value

If is zero length or Nothing, InStr returns 0. If is zero length or Nothing, InStr returns . If is not found, InStr returns 0. If is found within , InStr returns position where match begins. If > , InStr returns 0.

Reference

Strings Class
Strings Members
Overload List