Margins.Bottom 属性
获取或设置下边距（以百分之一英寸为单位）。
**命名空间:**System.Drawing.Printing
**程序集:**System.Drawing（在 system.drawing.dll 中）
语法
声明
Public Property Bottom As Integer
用法
Dim instance As Margins
Dim value As Integer
value = instance.Bottom
instance.Bottom = value
public int Bottom { get; set; }
public:
property int Bottom {
int get ();
void set (int value);
}
/** @property */
public int get_Bottom ()
/** @property */
public void set_Bottom (int value)
public function get Bottom () : int
public function set Bottom (value : int)
属性值
下边距，以百分之一英寸为单位。
异常
| 异常类型 | 条件 |
|---|---|
Bottom 属性被设置为一个小于 0 的值。 |
备注
如果以毫米为单位测量边距，则将需要的以毫米为单位的边距宽度乘以 3.937，以确定以百分之一英寸为单位的正确尺寸。例如，如果需要 25 毫米的边距，则将它乘以 3.937，舍去小数之后结果为 98。随后将适当的 Margins 成员设置为 98。
示例
在此示例中使用 System.Drawing、System.Drawing.Printing 和 System.IO 命名空间。
下面的代码示例设置文档的默认页面设置：左边距和右边距宽度为 1 英寸，上边距和下边距宽度为 1.5 英寸。
Public Sub Printing()
Try
' This assumes that a variable of type string, named filePath,
' has been set to the path of the file to print.
streamToPrint = New StreamReader(filePath)
Try
printFont = New Font("Arial", 10)
Dim pd As New PrintDocument()
' This assumes that a method, named pd_PrintPage, has been
' defined. pd_PrintPage handles the PrintPage event.
AddHandler pd.PrintPage, AddressOf pd_PrintPage
' This assumes that a variable of type string, named
' printer, has been set to the printer's name.
pd.PrinterSettings.PrinterName = printer
' Set the left and right margins to 1 inch.
pd.DefaultPageSettings.Margins.Left = 100
pd.DefaultPageSettings.Margins.Right = 100
' Set the top and bottom margins to 1.5 inches.
pd.DefaultPageSettings.Margins.Top = 150
pd.DefaultPageSettings.Margins.Bottom = 150
pd.Print()
Finally
streamToPrint.Close()
End Try
Catch ex As Exception
MessageBox.Show("An error occurred printing the file - " & ex.Message)
End Try
End Sub
public void Printing()
{
try
{
/* This assumes that a variable of type string, named filePath,
has been set to the path of the file to print. */
streamToPrint = new StreamReader (filePath);
try
{
printFont = new Font("Arial", 10);
PrintDocument pd = new PrintDocument();
/* This assumes that a method, named pd_PrintPage, has been
defined. pd_PrintPage handles the PrintPage event. */
pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
/* This assumes that a variable of type string, named
printer, has been set to the printer's name. */
pd.PrinterSettings.PrinterName = printer;
// Set the left and right margins to 1 inch.
pd.DefaultPageSettings.Margins.Left = 100;
pd.DefaultPageSettings.Margins.Right = 100;
// Set the top and bottom margins to 1.5 inches.
pd.DefaultPageSettings.Margins.Top = 150;
pd.DefaultPageSettings.Margins.Bottom = 150;
pd.Print();
}
finally
{
streamToPrint.Close() ;
}
}
catch(Exception ex)
{
MessageBox.Show("An error occurred printing the file - " + ex.Message);
}
}
void Printing()
{
try
{
/* This assumes that a variable of type string, named filePath,
has been set to the path of the file to print. */
streamToPrint = gcnew StreamReader( filePath );
try
{
printFont = gcnew System::Drawing::Font( "Arial",10 );
PrintDocument^ pd = gcnew PrintDocument;
/* This assumes that a method, named pd_PrintPage, has been
defined. pd_PrintPage handles the PrintPage event. */
pd->PrintPage += gcnew PrintPageEventHandler( this, &Sample::pd_PrintPage );
/* This assumes that a variable of type string, named
printer, has been set to the printer's name. */
pd->PrinterSettings->PrinterName = printer;
// Set the left and right margins to 1 inch.
pd->DefaultPageSettings->Margins->Left = 100;
pd->DefaultPageSettings->Margins->Right = 100;
// Set the top and bottom margins to 1.5 inches.
pd->DefaultPageSettings->Margins->Top = 150;
pd->DefaultPageSettings->Margins->Bottom = 150;
pd->Print();
}
finally
{
streamToPrint->Close();
}
}
catch ( Exception^ ex )
{
MessageBox::Show( String::Concat( "An error occurred printing the file - ", ex->Message ) );
}
}
public void Printing()
{
try {
/* This assumes that a variable of type string, named filePath,
has been set to the path of the file to print.
*/
streamToPrint = new StreamReader(filePath);
try {
printFont = new Font("Arial", 10);
PrintDocument pd = new PrintDocument();
/* This assumes that a method, named pd_PrintPage, has been
defined. pd_PrintPage handles the PrintPage event.
*/
pd.add_PrintPage(new PrintPageEventHandler(pd_PrintPage));
/* This assumes that a variable of type string, named
printer, has been set to the printer's name.
*/
pd.get_PrinterSettings().set_PrinterName(printer);
// Set the left and right margins to 1 inch.
pd.get_DefaultPageSettings().get_Margins().set_Left(100);
pd.get_DefaultPageSettings().get_Margins().set_Right(100);
// Set the top and bottom margins to 1.5 inches.
pd.get_DefaultPageSettings().get_Margins().set_Top(150);
pd.get_DefaultPageSettings().get_Margins().set_Bottom(150);
pd.Print();
}
finally {
streamToPrint.Close();
}
}
catch (System.Exception ex) {
MessageBox.Show(("An error occurred printing the file - "
+ ex.get_Message()));
}
} //Printing
平台
Windows 98、Windows 2000 SP4、Windows Millennium Edition、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
Margins 类
Margins 成员
System.Drawing.Printing 命名空间
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