Len :

Len函數返回給定的輸入字符串(包括空格)的長度。

語法:

Len(String)

示例:

添加一個按鈕，並添加以下功能

Private Sub Constant_demo_Click()
  Dim var1 as Variant
  Dim var2 as Variant
  var1 ="Microsoft VBScript"
  msgbox("Length of var1 is : " & Len(var1))
  
  var2 =       "       Microsoft VBScript           "
  msgbox ("Length of var2 is : " & Len(var2))
End Sub

當執行函數輸出如下所示：

Length of var1 is : 18
Length of var2 is : 36