[單項選擇題] 在窗體上畫一個名為CommonDialog1的通用對話框，一個名稱為Command1的命令按鈕。要求單擊命令按鈕時，打開一個保存文件的通用對話框
[單項選擇題] 在窗體上畫一個名為CommonDialog1的通用對話框，一個名稱為Command1的命令按鈕。要求單擊命令按鈕時，打開一個保存文件的通用對話框窗口。該窗口的標題為“Save”，默認文件名為“SaveFile"，在“文件類型”欄中顯示“*.txt”。能夠滿足上述要求的程序是 ______ 。
A．Private Sub Command1_ Click()CommonDialog1. FileName = "SaveFile"CommonDialog1. Filter = "All Files ｜ *.* ｜*.txt *.txt｜ *.doc｜ *.doc"CommonDialog1. Filterlndex = 2CommonDialog1. DialogTitle = "Save"CommonDialog1. Action = 2 End Sub
B．Private Sub Command1_Click()CommonDialog1. FileName = "SaveFile"CommonDialog1. Filter = "All Files ｜*.* ｜ *.txt｜*.txt｜*.doc｜*.doc"CommonDialog1. Filterlndex = 1CommonDialog1. DialogTitle = "Save"CommonDialog1. Action = 2 End Sub
C．Private Sub Command1_ Click()CommonDialog1. FileName = "Save"CommonDialog1. Filter = "All Files ｜%* ｜*.txt｜*.txt｜*.doc｜*.doc"CommonDialog1. Filterlndex = 2CommonDialog1. DialogTitle = "Save"CommonDialog1. Action = 2 End Sub
D．Private Sub Command1_ Click()CommonDialog1. FileName = "SaveFile"CommonDialog1. Filter = "All Files ｜*.*｜*.txt｜*.txt｜*.doc｜*.doc"CommonDialog1. Filterlndex = 1CommonDialog1. DialogTitle = "Save".CommonDialog1. Action = 1 End Sub
正確答案：A
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