本文介绍使用Spire.Doc for .NET 在Word中添加横线的方法。

using Spire.Doc;
using Spire.Doc.Documents;

namespace AddHorizontalLine
{
    class Program
    {
        static void Main(string[] args)
        {
            //加载Word测试文档
            Document doc = new Document();
            doc.LoadFromFile("test.docx");

            //获取节和段落
            Section section = doc.Sections[0];
            Paragraph paragraph = section.Paragraphs[4];

            //添加横线
            paragraph.AppendHorizonalLine();

            //保存文档
            doc.SaveToFile("output.docx");
            System.Diagnostics.Process.Start("output.docx");
        }
    }
}

Imports Spire.Doc
Imports Spire.Doc.Documents

Namespace AddHorizontalLine
	Class Program
		Private Shared Sub Main(args As String())
			'加载Word测试文档 Dim doc As New Document() doc.LoadFromFile("test.docx") '获取节和段落
			Dim section As Section = doc.Sections(0)
			Dim paragraph As Paragraph = section.Paragraphs(4)

			'添加横线 paragraph.AppendHorizonalLine() '保存文档
			doc.SaveToFile("output.docx")
			System.Diagnostics.Process.Start("output.docx")

		End Sub
	End Class
End Namespace

横线添加效果：