Form.FormBorderStyle 属性
获取或设置窗体的边框样式。
**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 FormBorderStyle As FormBorderStyle
用法
Dim instance As Form
Dim value As FormBorderStyle
value = instance.FormBorderStyle
instance.FormBorderStyle = value
public FormBorderStyle FormBorderStyle { get; set; }
public:
property FormBorderStyle FormBorderStyle {
FormBorderStyle get ();
void set (FormBorderStyle value);
}
/** @property */
public FormBorderStyle get_FormBorderStyle ()
/** @property */
public void set_FormBorderStyle (FormBorderStyle value)
public function get FormBorderStyle () : FormBorderStyle
public function set FormBorderStyle (value : FormBorderStyle)
属性值
FormBorderStyle，表示要为窗体显示的边框样式。默认为 FormBorderStyle.Sizable。
异常
| 异常类型 | 条件 |
|---|---|
指定值不在有效值范围内。 |
备注
窗体的边框样式确定窗体的外边缘如何显示。除了更改窗体的边框显示方式外，某些边框样式还阻止调整窗体的大小。例如，FormBorderStyle.FixedDialog 边框样式将窗体的边框更改为对话框的边框，并阻止调整该窗体的大小。该边框样式还可影响窗体标题栏部分的大小或可用性。
提示
使用 Sizable 样式，就不可能将窗口大小调整为低于某个最小值，即使已经将 ControlBox 设置为 false，并将一个零长度字符串分配给 Text。请考虑改用 SizableToolWindow 样式来解决此问题。
Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows CE 平台说明： 若要确保窗体在创建后保持正确的大小，请指定 FixedSingle 样式。如果为样式指定 None，则可能不会保持正确的大小调整。
示例
下面的代码示例创建 Form 的一个新实例，并调用 ShowDialog 方法以将该窗体显示为对话框。该示例设置 FormBorderStyle、AcceptButton、CancelButton、MinimizeBox、MaximizeBox 和 StartPosition 属性，将窗体的外观和功能更改为对话框形式。该示例还使用窗体的 Controls 集合的 Add 方法来添加两个 Button 控件。该示例使用 HelpButton 属性来在对话框的标题栏中显示“帮助”按钮。
Public Sub CreateMyForm()
' Create a new instance of the form.
Dim form1 As New Form()
' Create two buttons to use as the accept and cancel buttons.
Dim button1 As New Button()
Dim button2 As New Button()
' Set the text of button1 to "OK".
button1.Text = "OK"
' Set the position of the button on the form.
button1.Location = New Point(10, 10)
' Set the text of button2 to "Cancel".
button2.Text = "Cancel"
' Set the position of the button based on the location of button1.
button2.Location = _
New Point(button1.Left, button1.Height + button1.Top + 10)
' Set the caption bar text of the form.
form1.Text = "My Dialog Box"
' Display a help button on the form.
form1.HelpButton = True
' Define the border style of the form to a dialog box.
form1.FormBorderStyle = FormBorderStyle.FixedDialog
' Set the MaximizeBox to false to remove the maximize box.
form1.MaximizeBox = False
' Set the MinimizeBox to false to remove the minimize box.
form1.MinimizeBox = False
' Set the accept button of the form to button1.
form1.AcceptButton = button1
' Set the cancel button of the form to button2.
form1.CancelButton = button2
' Set the start position of the form to the center of the screen.
form1.StartPosition = FormStartPosition.CenterScreen
' Add button1 to the form.
form1.Controls.Add(button1)
' Add button2 to the form.
form1.Controls.Add(button2)
' Display the form as a modal dialog box.
form1.ShowDialog()
End Sub
public void CreateMyForm()
{
// Create a new instance of the form.
Form form1 = new Form();
// Create two buttons to use as the accept and cancel buttons.
Button button1 = new Button ();
Button button2 = new Button ();
// Set the text of button1 to "OK".
button1.Text = "OK";
// Set the position of the button on the form.
button1.Location = new Point (10, 10);
// Set the text of button2 to "Cancel".
button2.Text = "Cancel";
// Set the position of the button based on the location of button1.
button2.Location
= new Point (button1.Left, button1.Height + button1.Top + 10);
// Set the caption bar text of the form.
form1.Text = "My Dialog Box";
// Display a help button on the form.
form1.HelpButton = true;
// Define the border style of the form to a dialog box.
form1.FormBorderStyle = FormBorderStyle.FixedDialog;
// Set the MaximizeBox to false to remove the maximize box.
form1.MaximizeBox = false;
// Set the MinimizeBox to false to remove the minimize box.
form1.MinimizeBox = false;
// Set the accept button of the form to button1.
form1.AcceptButton = button1;
// Set the cancel button of the form to button2.
form1.CancelButton = button2;
// Set the start position of the form to the center of the screen.
form1.StartPosition = FormStartPosition.CenterScreen;
// Add button1 to the form.
form1.Controls.Add(button1);
// Add button2 to the form.
form1.Controls.Add(button2);
// Display the form as a modal dialog box.
form1.ShowDialog();
}
public:
void CreateMyForm()
{
// Create a new instance of the form.
Form^ form1 = gcnew Form;
// Create two buttons to use as the accept and cancel buttons.
Button^ button1 = gcnew Button;
Button^ button2 = gcnew Button;
// Set the text of button1 to "OK".
button1->Text = "OK";
// Set the position of the button on the form.
button1->Location = Point(10,10);
// Set the text of button2 to "Cancel".
button2->Text = "Cancel";
// Set the position of the button based on the location of button1.
button2->Location =
Point( button1->Left, button1->Height + button1->Top + 10 );
// Set the caption bar text of the form.
form1->Text = "My Dialog Box";
// Display a help button on the form.
form1->HelpButton = true;
// Define the border style of the form to a dialog box.
form1->FormBorderStyle = ::FormBorderStyle::FixedDialog;
// Set the MaximizeBox to false to remove the maximize box.
form1->MaximizeBox = false;
// Set the MinimizeBox to false to remove the minimize box.
form1->MinimizeBox = false;
// Set the accept button of the form to button1.
form1->AcceptButton = button1;
// Set the cancel button of the form to button2.
form1->CancelButton = button2;
// Set the start position of the form to the center of the screen.
form1->StartPosition = FormStartPosition::CenterScreen;
// Add button1 to the form.
form1->Controls->Add( button1 );
// Add button2 to the form.
form1->Controls->Add( button2 );
// Display the form as a modal dialog box.
form1->ShowDialog();
}
public void CreateMyForm()
{
// Create a new instance of the form.
Form form1 = new Form();
// Create two buttons to use as the accept and cancel buttons.
Button button1 = new Button();
Button button2 = new Button();
// Set the text of button1 to "OK".
button1.set_Text("OK");
// Set the position of the button on the form.
button1.set_Location(new Point(10, 10));
// Set the text of button2 to "Cancel".
button2.set_Text("Cancel");
// Set the position of the button based on the location of button1.
button2.set_Location(new Point(button1.get_Left(),
button1.get_Height() + button1.get_Top() + 10));
// Set the caption bar text of the form.
form1.set_Text("My Dialog Box");
// Display a help button on the form.
form1.set_HelpButton(true);
// Define the border style of the form to a dialog box.
form1.set_FormBorderStyle(get_FormBorderStyle().FixedDialog);
// Set the MaximizeBox to false to remove the maximize box.
form1.set_MaximizeBox(false);
// Set the MinimizeBox to false to remove the minimize box.
form1.set_MinimizeBox(false);
// Set the accept button of the form to button1.
form1.set_AcceptButton(button1);
// Set the cancel button of the form to button2.
form1.set_CancelButton(button2);
// Set the start position of the form to the center of the screen.
form1.set_StartPosition(FormStartPosition.CenterScreen);
// Add button1 to the form.
form1.get_Controls().Add(button1);
// Add button2 to the form.
form1.get_Controls().Add(button2);
// Display the form as a modal dialog box.
form1.ShowDialog();
} //CreateMyForm
平台
Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、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
.NET Compact Framework
受以下版本支持：2.0、1.0