Mid Function, Mid Statement

目次

# Mid Function

Returns the specified portion of a string expression (Mid function), or replaces the portion of a string expression with another string (Mid subroutine).

### Syntax:

    Mid(string As String, Start As Long [, Length As Long]) As String
    Mid([ByRef] string As String, Start As Long, [Length As Long], Text As String)

### Return type:

文字列 (関数のみ)

### Parameters:

string: Any string expression that you want to extract (Mid function). Any text variable name that you want to modify (Mid subroutine).

Start: Numeric expression that indicates the character position within the string where the string portion that you want to replace or to return begins. The minimum allowed value is 1. The maximum allowed value is 2,147,483,648.

Length: Numeric expression that returns the number of characters that you want to replace or return. The maximum allowed value is 2,147,483,648.

Mid 関数 の場合、Length パラメーターを指定しないと、指定文字列の開始位置から末尾までが返されます。

If the Length parameter in the Mid subroutine is less than the length of the text that you want to replace, the text is reduced to the specified length.

Text: The string to replace the string expression (Mid subroutine).

### Error codes:

5 無効なプロシージャー呼び出しです

### Example:

    Sub ExampleMid_Function_and_Statement
      text = "This is the original Text"
    func1:
      MsgBox Mid(text, 13, 8)   ' returns the word "original"
      MsgBox text               ' text is not modified
    stmt1:
      Mid(text, 13, 8, "new")
      MsgBox text               ' returns "This is the new Text"
    func2:
      MsgBox Mid(start:=10, string:="The quick brown fox ..") ' shows " brown fox .."
    stmt2:
      Mid text, 9, 12, "a new Phrase"
      MsgBox text               ' returns "This is a new Phrase"
    End Sub

関連項目

String functions

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