Contents

# InStr Function

傳回某個字串在另一字串中的位置。

Instr 函式傳回兩個字串相符的位置。如果在另一個字串中未找到給定的字串，則函式傳回 0。

### Syntax:

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

### Return type:

Integer

### Parameters:

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.

### 錯誤代碼：

5 無效的程序呼叫

## 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

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