DateTimePicker.ShowCheckBox 属性

获取或设置一个值，该值指示在选定日期的左侧是否显示一个复选框。

**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms（在 system.windows.forms.dll 中）

语法

声明
Public Property ShowCheckBox As Boolean
用法
Dim instance As DateTimePicker
Dim value As Boolean

value = instance.ShowCheckBox

instance.ShowCheckBox = value

public bool ShowCheckBox { get; set; }

public:
property bool ShowCheckBox {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_ShowCheckBox ()

/** @property */
public void set_ShowCheckBox (boolean value)

public function get ShowCheckBox () : boolean

public function set ShowCheckBox (value : boolean)

属性值

如果在选定日期的左边显示复选框，则为 true；否则为 false。默认为 false。

备注

当 ShowCheckBox 属性设置为 true 时，控件中日期的左侧会显示一个复选框。若选中此复选框，则可更新日期/时间值。若此复选框为空，则无法更改日期/时间值。

示例

下面的代码示例创建 DateTimePicker 控件的一个新实例并将其初始化。设置控件的 CustomFormat 属性。此外，还要设置 ShowCheckBox 属性以便此控件显示 CheckBox；并设置 ShowUpDown 属性以便此控件显示为数值调节钮控件（也称为 up-down 控件）。

Public Sub CreateMyDateTimePicker()
    ' Create a new DateTimePicker control and initialize it.
    Dim dateTimePicker1 As New DateTimePicker()
    
    ' Set the MinDate and MaxDate.
    dateTimePicker1.MinDate = New DateTime(1985, 6, 20)
    dateTimePicker1.MaxDate = DateTime.Today
    
    ' Set the CustomFormat string.
    dateTimePicker1.CustomFormat = "MMMM dd, yyyy - dddd"
    dateTimePicker1.Format = DateTimePickerFormat.Custom
    
    ' Show the CheckBox and display the control as an up-down control.
    dateTimePicker1.ShowCheckBox = True
    dateTimePicker1.ShowUpDown = True
End Sub 'CreateMyDateTimePicker

public void CreateMyDateTimePicker()
{
   // Create a new DateTimePicker control and initialize it.
   DateTimePicker dateTimePicker1 = new DateTimePicker();

   // Set the MinDate and MaxDate.
   dateTimePicker1.MinDate = new DateTime(1985, 6, 20);
   dateTimePicker1.MaxDate = DateTime.Today;

   // Set the CustomFormat string.
   dateTimePicker1.CustomFormat = "MMMM dd, yyyy - dddd";
   dateTimePicker1.Format = DateTimePickerFormat.Custom;

   // Show the CheckBox and display the control as an up-down control.
   dateTimePicker1.ShowCheckBox = true;
   dateTimePicker1.ShowUpDown = true;
}
   

public:
   void CreateMyDateTimePicker()
   {
      // Create a new DateTimePicker control and initialize it.
      DateTimePicker^ dateTimePicker1 = gcnew DateTimePicker;
      
      // Set the MinDate and MaxDate.
      dateTimePicker1->MinDate = DateTime(1985,6,20);
      dateTimePicker1->MaxDate = DateTime::Today;
      
      // Set the CustomFormat string.
      dateTimePicker1->CustomFormat = "MMMM dd, yyyy - dddd";
      dateTimePicker1->Format = DateTimePickerFormat::Custom;
      
      // Show the CheckBox and display the control as an up-down control.
      dateTimePicker1->ShowCheckBox = true;
      dateTimePicker1->ShowUpDown = true;
   }

public void CreateMyDateTimePicker()
{
    // Create a new DateTimePicker control and initialize it.
    DateTimePicker dateTimePicker1 = new DateTimePicker();

    // Set the MinDate and MaxDate.
    dateTimePicker1.set_MinDate(new DateTime(1985, 6, 20));
    dateTimePicker1.set_MaxDate(DateTime.get_Today());

    // Set the CustomFormat string.
    dateTimePicker1.set_CustomFormat("MMMM dd, yyyy - dddd");
    dateTimePicker1.set_Format(DateTimePickerFormat.Custom);

    // Show the CheckBox and display the control as an up-down control.
    dateTimePicker1.set_ShowCheckBox(true);
    dateTimePicker1.set_ShowUpDown(true);
} //CreateMyDateTimePicker

平台

Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

DateTimePicker 类
DateTimePicker 成员
System.Windows.Forms 命名空间