FlowDocument.ContentStart 属性

定义

命名空间:

System.Windows.Documents

程序集:

PresentationFramework.dll

获取表示 TextPointer 中内容起始位置的 FlowDocument。

public:
 property System::Windows::Documents::TextPointer ^ ContentStart { System::Windows::Documents::TextPointer ^ get(); };

public System.Windows.Documents.TextPointer ContentStart { get; }

member this.ContentStart : System.Windows.Documents.TextPointer

Public ReadOnly Property ContentStart As TextPointer

属性值

TextPointer

表示 TextPointerContext 中内容起始位置的 FlowDocument。

示例

以下示例使用 ContentStart 属性在 的 FlowDocument开头插入内容。

// Create a new, empty FlowDocument.
FlowDocument flowDoc = new FlowDocument();

// Insert an initial paragraph at the beginning of the empty FlowDocument.
flowDoc.Blocks.Add(new Paragraph(new Run(
    "Since the new FlowDocument is empty at this point, this will be the initial content " +
    "in the FlowDocument."
)));
// Insert a line-break at the beginnign of the document, before the previously inserted paragraph.
flowDoc.Blocks.InsertBefore(flowDoc.Blocks.FirstBlock, new Paragraph(new LineBreak()));
// Insert another paragraph at the beginning of the document.
flowDoc.Blocks.InsertBefore(flowDoc.Blocks.FirstBlock, new Paragraph(new Run(
    "This paragraph will be inserted before the previously added paragraph, replacing the previously" +
    "added paragraph as the first paragraph in the document."
)));

    ' Create a new, empty FlowDocument.
Dim flowDocStart As New FlowDocument()

    ' Insert an initial paragraph at the beginning of the empty FlowDocument.
flowDocStart.Blocks.Add(New Paragraph(New Run("Since the new FlowDocument is empty at this point, this will be the initial content " & "in the FlowDocument.")))
    ' Insert a line-break at the beginnign of the document, before the previously inserted paragraph.
flowDocStart.Blocks.InsertBefore(flowDocStart.Blocks.FirstBlock, New Paragraph(New LineBreak()))
    ' Insert another paragraph at the beginning of the document.
flowDocStart.Blocks.InsertBefore(flowDocStart.Blocks.FirstBlock, New Paragraph(New Run("This paragraph will be inserted before the previously added paragraph, replacing the previously" & "added paragraph as the first paragraph in the document.")))

注解

属性 ContentStart 通常用于将内容插入到 的 FlowDocument开头。

TextPointer此属性返回的 始终LogicalDirection设置为 LogicalDirection.Backward。

另请参阅

• ContentEnd