PM> Install-Package Spire.PDF

using Spire.Pdf;
using Spire.Pdf.AutomaticFields;
using Spire.Pdf.Graphics;
using System.Drawing;


namespace AddPageNumbers
{
    class Program
    {
        static void Main(string[] args)
        {
            //初始化 PdfDocument 类的实例
            PdfDocument pdf = new PdfDocument();

            //加载示例文档
            pdf.LoadFromFile("示例文档.pdf");

            //设置页码字体样式
            PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("宋体", 10f, FontStyle.Regular), true);

            //初始化 PdfPageNumberField 类的实例
            PdfPageNumberField pageNumber = new PdfPageNumberField();

            //初始化PdfPageCountField 类的实例
            PdfPageCountField pageCount = new PdfPageCountField();

            //初始化PdfCompositeField 类的实例
            PdfCompositeField compositeField = new PdfCompositeField(font, PdfBrushes.Black, "第{0}页，共{1}页", pageNumber, pageCount);
            //设置复合字段的文本对齐方式
            compositeField.StringFormat = new PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Top);

            //循环遍历页面
            for (int i = 0; i < pdf.Pages.Count; i++)
            {
                //在页面的特定位置绘制复合字段
                compositeField.Draw(pdf.Pages[i].Canvas, pdf.Pages[i].Size.Width / 4 - 20, pdf.Pages[i].Size.Height / 2- 20);
            }

            //保存结果文档
            pdf.SaveToFile("添加页码.pdf");
        }
    }
}

Imports Spire.Pdf
Imports Spire.Pdf.AutomaticFields
Imports Spire.Pdf.Graphics

Namespace AddPageNumbers
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            '初始化 PdfDocument 类的实例
            Dim pdf As PdfDocument = New PdfDocument()

            '加载示例文档
            pdf.LoadFromFile("示例文档.pdf")

            '设置页码字体样式
            Dim font As PdfTrueTypeFont = New PdfTrueTypeFont(New Font("宋体", 10F, FontStyle.Regular), True)

            '初始化 PdfPageNumberField 类的实例
            Dim pageNumber As PdfPageNumberField = New PdfPageNumberField()

            '初始化PdfPageCountField 类的实例
            Dim pageCount As PdfPageCountField = New PdfPageCountField()

            '初始化PdfCompositeField 类的实例
            Dim compositeField As PdfCompositeField = New PdfCompositeField(font, PdfBrushes.Black, "第{0}页，共{1}页", pageNumber, pageCount)
            '设置复合字段的文本对齐方式
            compositeField.StringFormat = New PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Top)

            '循环遍历页面
            For i As Integer = 0 To pdf.Pages.Count - 1
                '在页面的特定位置绘制复合字段
                compositeField.Draw(pdf.Pages(i).Canvas, pdf.Pages(i).Size.Width / 4 - 20, pdf.Pages(i).Size.Height / 2 - 20)
            Next

            '保存结果文档
            pdf.SaveToFile("添加页码.pdf")
        End Sub
    End Class
End Namespace

PM> Install-Package Spire.Doc

using Spire.Doc;
using Spire.Doc.Documents;
using System.Drawing;

namespace ChangeFontColorForParagraph
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建一个Document实例
            Document document = new Document();
            //Load a Word document
            document.LoadFromFile("示例.docx");

            //获取第一节
            Section section = document.Sections[0];

            //更改第一段文本颜色
            Paragraph p1 = section.Paragraphs[0];
            ParagraphStyle s1 = new ParagraphStyle(document);
            s1.Name = "Color1";
            s1.CharacterFormat.TextColor = Color.RosyBrown;
            document.Styles.Add(s1);
            p1.ApplyStyle(s1.Name);

            //更改第二段文本颜色
            Paragraph p2 = section.Paragraphs[1];
            ParagraphStyle s2 = new ParagraphStyle(document);
            s2.Name = "Color2";
            s2.CharacterFormat.TextColor = Color.MediumSlateBlue;
            document.Styles.Add(s2);
            p2.ApplyStyle(s2.Name);

            //保存结果文档
            document.SaveToFile("更改段落字体颜色.docx", FileFormat.Docx);
        }
    }
}

Imports Spire.Doc
Imports Spire.Doc.Documents
Imports System.Drawing

Namespace ChangeFontColorForParagraph
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            '创建一个Document实例
            Dim document As Document = New Document()
            'Load a Word document
            document.LoadFromFile("示例.docx")

            '获取第一节
            Dim section As Section = document.Sections(0)

            '更改第一段文本颜色
            Dim p1 As Paragraph = section.Paragraphs(0)
            Dim s1 As ParagraphStyle = New ParagraphStyle(document)
            s1.Name = "Color1"
            s1.CharacterFormat.TextColor = Color.RosyBrown
            document.Styles.Add(s1)
            p1.ApplyStyle(s1.Name)

            '更改第二段文本颜色
            Dim p2 As Paragraph = section.Paragraphs(1)
            Dim s2 As ParagraphStyle = New ParagraphStyle(document)
            s2.Name = "Color2"
            s2.CharacterFormat.TextColor = Color.MediumSlateBlue
            document.Styles.Add(s2)
            p2.ApplyStyle(s2.Name)

            '保存结果文档
            document.SaveToFile("更改段落字体颜色.docx", FileFormat.Docx)
        End Sub
    End Class
End Namespace

using Spire.Doc;
using Spire.Doc.Documents;
using System.Drawing;

namespace ChangeFontColorForText
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建一个Document实例
            Document document = new Document();
            //加载 Word 文档
            document.LoadFromFile("示例.docx");

            //查找指定文本
            TextSelection[] text = document.FindAllString("Spire.Doc for .NET", false, true);

            //更改特定文本的字体颜色
            foreach (TextSelection seletion in text)
            {
                seletion.GetAsOneRange().CharacterFormat.TextColor = Color.Purple;
            }

            //保存结果文档
            document.SaveToFile("更改特定文本字体颜色.docx", FileFormat.Docx);
        }
    }
}

Imports Spire.Doc
Imports Spire.Doc.Documents
Imports System.Drawing

Namespace ChangeFontColorForText
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            '创建一个Document实例
            Dim document As Document = New Document()
            '加载 Word 文档
            document.LoadFromFile("示例.docx")

            '查找需要更改字体颜色的文本
            Dim text As TextSelection() = document.FindAllString("Spire.Doc for .NET", False, True)

            '更改特定文本的字体颜色
            For Each seletion As TextSelection In text
                seletion.GetAsOneRange().CharacterFormat.TextColor = Color.Purple
            Next

            '保存结果文档
            document.SaveToFile("更改特定文本字体颜色.docx", FileFormat.Docx)
        End Sub
    End Class
End Namespace

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.cn/repository/maven-public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.presentation</artifactId>
        <version>11.9.10</version>
    </dependency>
</dependencies>

import com.spire.presentation.*;

public class modifyHyperlink {
    public static void main(String[] args) throws Exception {

        //创建一个Presentation对象并加载一个PowerPoint文件
        Presentation presentation = new Presentation();
        presentation.loadFromFile("test.pptx");

        //获取包含超链接的指定形状
        IAutoShape shape = (IAutoShape)presentation.getSlides().get(0).getShapes().get(0);

        //编辑超链接文本和地址
        shape.getTextFrame().getTextRange().setText("Spire.Presentation for Java");
        shape.getTextFrame().getTextRange().getClickAction().setAddress("https://www.e-iceblue.com/Introduce/presentation-for-java.html");

        //保存文件
        presentation.saveToFile("ModifyHyperlink.pptx", FileFormat.PPTX_2013);
    }
}

import com.spire.presentation.*;

public class removeHyperlink {
    public static void main(String[] args) throws Exception {

        //创建一个Presentation对象并加载一个PowerPoint文件
        Presentation presentation = new Presentation();
        presentation.loadFromFile("test.pptx");

        //获取包含超链接的指定形状
        IAutoShape shape = (IAutoShape)presentation.getSlides().get(0).getShapes().get(0);

        //将点击动作设置为null来删除超链接
        shape.getTextFrame().getTextRange().setClickAction(null);

        //保存文件
        presentation.saveToFile("RemoveHyperlink.pptx", FileFormat.PPTX_2013);
    }
}

PM> Install-Package Spire.XLS

using Spire.Xls;
using System;

namespace SplitWorksheets
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建Workbook对象
            Workbook wb = new Workbook();

            //加载示例 Excel 文件
            wb.LoadFromFile("数据.xlsx");

            //声明一个新的 Workbook 变量
            Workbook newWb;

            //声明一个字符串变量
            String sheetName;

            //指定用于存储生成的 Excel 文件的文件夹路径
            String folderPath = "C:\\Users\\Tina\\Desktop\\输出结果\\";

            //循环遍历源文件中的工作表
            for (int i = 0; i < wb.Worksheets.Count; i++)
            {

                //初始化Workbook对象
                newWb = new Workbook();

                //删除默认工作表
                newWb.Worksheets.Clear();

                //将源文档的特定工作表添加到新工作簿
                newWb.Worksheets.AddCopy(wb.Worksheets[i]);

                //获取worksheet名称
                sheetName = wb.Worksheets[i].Name;

                //将新工作簿保存到指定文件夹
                newWb.SaveToFile(folderPath + sheetName + ".xlsx", ExcelVersion.Version2013);
            }
        }
    }
}

VB.NET
Imports Spire.Xls

Namespace SplitWorksheets
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            '创建Workbook对象
            Dim wb As Workbook = New Workbook()

            '加载示例 Excel 文件
            wb.LoadFromFile("数据.xlsx")

            '声明一个新的 Workbook 变量
            Dim newWb As Workbook

            '声明一个字符串变量
            Dim sheetName As String

            '指定用于存储生成的 Excel 文件的文件夹路径
            Dim folderPath = "C:\Users\Tina\Desktop\输出结果\"

            '循环遍历源文件中的工作表
            For i As Integer = 0 To wb.Worksheets.Count - 1

                '初始化Workbook对象
                newWb = New Workbook()

                '删除默认工作表
                newWb.Worksheets.Clear()

                '将源文档的特定工作表添加到新工作簿
                newWb.Worksheets.AddCopy(wb.Worksheets(i))

                '获取worksheet名称
                sheetName = wb.Worksheets(i).Name

                '将新工作簿保存到指定文件夹
                newWb.SaveToFile(folderPath & sheetName & ".xlsx", ExcelVersion.Version2013)
            Next
        End Sub
    End Class
End Namespace