[单项选择]通用对话框CommonDialog中的方法为
A. ShowOpen ShowSave ShowColor ShowFont ShowPrinter ShowHelp
B. ShowOpen ShowClose ShowColor ShowFont ShowPrinter ShowHelp
C. ShowOpen ShowSave ShowFont ShowPrinter 　ShdwHelp
D. ShowOpen　 ShowClose 　ShowFont　 ShowPrinter ShowHelp

[单项选择]通用对话框CommonDialog中的方法
A. ShowOpen
B. ShowOpen
C. ShowOpen
D. ShowOpen

[单项选择]以下不是通用对话框CommonDialog中的方法为
A. ShowOpen
B. ShowClose
C. ShowColor
D. ShowPrinter

[单项选择]在窗体上画一个名为CommonDialog1的通用对话框，一个名称为Command1的命令按钮。要求单击命令按钮时，打开一个保存文件的通用对话框窗口。该窗口的标题为“Save”，默认文件名为“SaveFile"，在“文件类型”栏中显示“*.txt”。能够满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 = 2 CommonDialog1. 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 = 1 CommonDialog1. 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 = 2 CommonDialog1. 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 = 1 CommonDialog1. DialogTitle = "Save". CommonDialog1. Action = 1 End Sub

[单项选择]在窗体上画一个名称为CommonDialog1的通用对话框，一个名称为Command1的命令按钮，要求单击命令按钮时，打开一个保存文件的对话框，该窗口的标题为“Save”，缺省文件名称为“SaveFile”，在“文件类型”栏中显示*txt，则能够满足上述要求的程序是（ ）。
A. java
B. javac
C. javap
D. javadoc

[单项选择]在窗体上画一个名称为CommonDialog1的通用对话框和一个名为Command1的命令按钮。要求实现这样一个功能：单击命令按钮后，打开一个通用对话框用于保存文件，其窗口标题为“保存”，默认文件名为Data，在“文件类型”栏中显示*.txt。下列程序中能实现以上功能的是______ 。
A. Private Sub Command1_ Click() CommonDialog1. FileName = "Data" CommonDialog1. Filter = "All Files｜*.｜* ｜(*.tx｜(*.do｜*.doc" CommonDialog1. Filterlndex = 2 CommonDialog1. DialogTitle = “保存” CommonDialog1. Action = 2 End Sub
B. Private Sub Command1_ Click() CommonDialog1. FileName = "Data" CommonDialog1. Filter = "All Files｜*.*｜(*.tx｜(*.do｜*.doc" CommonDialog1. FilterIndex = 2 CommonDialog1. DialogTitle =“保存” CommonDialog1. Action = 1 End Sub
C. Private Sub Command1_ Click() CommonDialog1. FileName = "Data" CommonDialog1. Filter = "All Files｜*.*｜(*.tx｜(*.do｜*.doc" CommonDialog1. FilterIndex = 1 CommonDialog1. DialogTitle = “保存” CommonDialog1. Action = 1 End Sub
D. Private Sub Command1_ Click() CommonDialog1. FileName = "Data" CommonDialog1. Filter = "All Files｜*.*｜(*.tx｜(*.do｜*.doc" CommonDialog1. FilterIndex = 1 CommonDialog1. DialogTitle = “保存” CommonDialog1. Action = 2 End Sub