Underline 构造函数

定义

命名空间:

System.Windows.Documents

程序集:

PresentationFramework.dll

初始化 Underline 类的新实例。

重载

Underline()	初始化 Underline 类的新的空实例。
Underline(Inline)	初始化 Underline 类的一个新实例，将指定的 Inline 对象作为新的 Underline 的初始内容。
Underline(Inline, TextPointer)	初始化 Underline 类的一个新实例，使用指定 Inline 对象作为新 Underline 的初始内容，并由一个 TextPointer 指定新 Inline 元素的插入位置。
Underline(TextPointer, TextPointer)	初始化 Underline 类的一个新实例，使用两个 TextPointer 对象，以指示该新 Underline 所包含的选定内容的开始位置和结束位置。

Underline()

初始化 Underline 类的新的空实例。

public:
 Underline();

public Underline ();

Public Sub New ()

Underline(Inline)

初始化 Underline 类的一个新实例，将指定的 Inline 对象作为新的 Underline 的初始内容。

public:
 Underline(System::Windows::Documents::Inline ^ childInline);

public Underline (System.Windows.Documents.Inline childInline);

new System.Windows.Documents.Underline : System.Windows.Documents.Inline -> System.Windows.Documents.Underline

Public Sub New (childInline As Inline)

参数

childInline

Inline

Inline 对象，它指定新的 Underline 的初始内容。

示例

以下示例演示此构造函数的用法。

// A child Inline element for the new Underline element.
Run runx = new Run("Text to make underlined.");

// After this line executes, the new element "underx"
// contains the specified Inline element, "runx".
Underline underx = new Underline(runx);

' A child Inline element for the new Underline element.
Dim runx1 As New Run("Text to make underlined.")

' After this line executes, the new element "underx"
' contains the specified Inline element, "runx".
Dim underx1 As New Underline(runx1)

Underline(Inline, TextPointer)

初始化 Underline 类的一个新实例，使用指定 Inline 对象作为新 Underline 的初始内容，并由一个 TextPointer 指定新 Inline 元素的插入位置。

public:
 Underline(System::Windows::Documents::Inline ^ childInline, System::Windows::Documents::TextPointer ^ insertionPosition);

public Underline (System.Windows.Documents.Inline childInline, System.Windows.Documents.TextPointer insertionPosition);

new System.Windows.Documents.Underline : System.Windows.Documents.Inline * System.Windows.Documents.TextPointer -> System.Windows.Documents.Underline

Public Sub New (childInline As Inline, insertionPosition As TextPointer)

参数

childInline

Inline

Inline 对象，它指定新的 Underline 的初始内容。 此参数可以为 null，在这种情况下，不插入任何 Inline。

insertionPosition

TextPointer

一个 TextPointer，它指定插入所创建的 Underline 元素的插入位置，或者为 null 以表示不自动插入。

示例

以下示例演示此构造函数的用法。

// A child Inline element for the new Underline element.
Run runx = new Run("Text to make underlined.");

// An empty paragraph will serve as the container for the new Underline element.
Paragraph parx = new Paragraph();

// After this line executes, the new element "underx"
// contains the specified Inline element, "runx".  Also, "underx" is
// inserted at the point indicated by the insertionPosition parameter, 
// which in this case indicates the content start position in the Paragraph 
// element "parx".
Underline underx = new Underline(runx, parx.ContentStart);

' A child Inline element for the new Underline element.
Dim runx2 As New Run("Text to make underlined.")

' An empty paragraph will serve as the container for the new Underline element.
Dim parx2 As New Paragraph()

' After this line executes, the new element "underx"
' contains the specified Inline element, "runx".  Also, "underx" is
' inserted at the point indicated by the insertionPosition parameter, 
' which in this case indicates the content start position in the Paragraph 
' element "parx".
Dim underx2 As New Underline(runx2, parx2.ContentStart)

Underline(TextPointer, TextPointer)

初始化 Underline 类的一个新实例，使用两个 TextPointer 对象，以指示该新 Underline 所包含的选定内容的开始位置和结束位置。

public:
 Underline(System::Windows::Documents::TextPointer ^ start, System::Windows::Documents::TextPointer ^ end);

public Underline (System.Windows.Documents.TextPointer start, System.Windows.Documents.TextPointer end);

new System.Windows.Documents.Underline : System.Windows.Documents.TextPointer * System.Windows.Documents.TextPointer -> System.Windows.Documents.Underline

Public Sub New (start As TextPointer, end As TextPointer)

参数

start

TextPointer

一个 TextPointer，指示该新 Underline 所包含的选定内容的开始位置。

end

TextPointer

一个 TextPointer，指示该新 Underline 所包含的选定内容的结束位置。

例外

ArgumentNullException

start 或 end 为 null 时引发。

ArgumentException

当 start 和 end 没有解析为可包含在 Underline 元素的内容范围时引发，例如，当 start 和 end 指示不同段落中的位置时。

示例

以下示例演示此构造函数的用法。

// Create a paragraph and three text runs to serve as example content.  
Paragraph parx = new Paragraph();
Run run1 = new Run("Text run 1.");
Run run2 = new Run("Text run 2, make underlined.");
Run run3 = new Run("Text run 3.");

// Add the three text runs to the paragraph, separated by linebreaks.
parx.Inlines.Add(run1);
parx.Inlines.Add(new LineBreak());
parx.Inlines.Add(run2);
parx.Inlines.Add(new LineBreak());
parx.Inlines.Add(run3);

// After this line executes, the selection of content
// indicated by the "start" and "end" parameters will be
// enclosed by the new Underline.  In this case, the new Underline
// will enclose the second text run, "run2".
Underline underx = new Underline(run2.ContentStart, run2.ContentEnd);

' Create a paragraph and three text runs to serve as example content.  
Dim parx As New Paragraph()
Dim run1 As New Run("Text run 1.")
Dim run2 As New Run("Text run 2, make underlined.")
Dim run3 As New Run("Text run 3.")

' Add the three text runs to the paragraph, separated by linebreaks.
parx.Inlines.Add(run1)
parx.Inlines.Add(New LineBreak())
parx.Inlines.Add(run2)
parx.Inlines.Add(New LineBreak())
parx.Inlines.Add(run3)

' After this line executes, the selection of content
' indicated by the "start" and "end" parameters will be
' enclosed by the new Underline.  In this case, the new Underline
' will enclose the second text run, "run2".
Dim underx As New Underline(run2.ContentStart, run2.ContentEnd)

注解

此构造函数旨在初始化新 Underline 元素，使其包含所选的预先存在的内容。