using Spire.Doc;
using System.Drawing;
namespace AddBackground
{
 class Program
 {
  static void Main(string[] args)
  {
   //創(chuàng)建一個(gè)Document類對(duì)象，并加載Word文檔
   Document document = new Document();
   document.LoadFromFile(@"C:\Users\Administrator\Desktop\Test.docx");
   //設(shè)置文檔的背景填充模式為顏色填充
   document.Background.Type = Spire.Doc.Documents.BackgroundType.Color;
   //設(shè)置背景顏色
   document.Background.Color = Color.MistyRose;
   //保存并打開(kāi)文檔
   document.SaveToFile("PureBackground.docx", FileFormat.Docx2013);
   System.Diagnostics.Process.Start("PureBackground.docx");
  }
 }
}

using Spire.Doc;
using System.Drawing;
using Spire.Doc.Documents;
namespace AddGradientBackground
{
 class Program
 {
  static void Main(string[] args)
  {
   //創(chuàng)建Document類實(shí)例，并加載Word文檔
   Document document = new Document();
   document.LoadFromFile(@"C:\Users\Administrator\Desktop\Test.docx");
   //設(shè)置文檔的背景填充模式為漸變填充
   document.Background.Type = Spire.Doc.Documents.BackgroundType.Gradient;
   //設(shè)置漸變背景顏色
   BackgroundGradient gradient = document.Background.Gradient;
   gradient.Color1 = Color.LightSkyBlue;
   gradient.Color2 = Color.PaleGreen;
   //設(shè)置漸變模式
   gradient.ShadingVariant = GradientShadingVariant.ShadingMiddle;
   gradient.ShadingStyle = GradientShadingStyle.FromCenter;
   //保存并打開(kāi)文檔
   document.SaveToFile("GradientColor.docx", FileFormat.Docx2013);
   System.Diagnostics.Process.Start("GradientColor.docx");
  }
 }
}

using System.Drawing;
using Spire.Doc;
namespace ImageBackground
{
 class Program
 {
  static void Main(string[] args)
  {
   //創(chuàng)建一個(gè)Document類實(shí)例，并加載Word文檔
   Document document = new Document();
   document.LoadFromFile(@"C:\Users\Administrator\Desktop\Test.docx");
   //設(shè)置文檔的背景填充模式為圖片填充
   document.Background.Type = Spire.Doc.Documents.BackgroundType.Picture;
   //設(shè)置背景圖片
   document.Background.Picture = Image.FromFile(@"C:\Users\Administrator\Desktop\1.jpg");
   //保存并打開(kāi)文檔
   document.SaveToFile("ImageBackground.docx", FileFormat.Docx2013);
   System.Diagnostics.Process.Start("ImageBackground.docx");
  }
 }
}