InStr 函数

返回某个字符串在另一字符串中的位置。

Instr 函数返回两个字符串相匹配的位置。如果在另一个字符串中未找到给定的字符串，则返回 0。

InStr ([Start As Long,] String1 As String, String2 As String[, Compare As Integer]) As Integer

Integer

Start: A numeric expression that marks the position in a string where the search for the specified substring starts. If you omit this parameter, the search starts at the first character of the string. The minimum allowed value is 1. The maximum allowed value is 2,147,483,648.

String1: The string expression being searched.

String2: The string expression that you want to search for.

Compare: Optional type of comparison. The value can be 0 or 1. The default value of 1 specifies case-insensitive. The value of 0 specifies case-sensitive.

Case-insensitive comparison may use locale specifics, for example, "s" may match "β".

To avoid a run-time error, do not set the Compare parameter if the Start parameter is omitted.

示例:

Sub ExamplePosition
  Const sCalc = "LibreOffice Calc"

  Instr(sCalc, "calc")     ' returns 13
  Instr(String1:=sCalc, String2:="calc", Start:=1)  ' returns 13
  Instr(11, sCalc, "c")     ' returns 13
  Instr(11, sCalc, "c",  1) ' returns 13
  Instr(11, sCalc, "c",  0) ' returns 16
End Sub