using Spire.Doc;
using System.Drawing;namespace AddBackground
{class Program{static void Main(string[] args){//创建一个Document类对象，并加载Word文档Document document = new Document();document.LoadFromFile(@"C:\Users\Administrator\Desktop\Test.docx");//设置文档的背景填充模式为颜色填充document.Background.Type = Spire.Doc.Documents.BackgroundType.Color;//设置背景颜色document.Background.Color = Color.MistyRose;//保存并打开文档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){//创建Document类实例，并加载Word文档Document document = new Document();document.LoadFromFile(@"C:\Users\Administrator\Desktop\Test.docx");//设置文档的背景填充模式为渐变填充document.Background.Type = Spire.Doc.Documents.BackgroundType.Gradient;//设置渐变背景颜色BackgroundGradient gradient = document.Background.Gradient;gradient.Color1 = Color.LightSkyBlue;gradient.Color2 = Color.PaleGreen;//设置渐变模式gradient.ShadingVariant = GradientShadingVariant.ShadingMiddle;gradient.ShadingStyle = GradientShadingStyle.FromCenter;//保存并打开文档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){//创建一个Document类实例，并加载Word文档Document document = new Document();document.LoadFromFile(@"C:\Users\Administrator\Desktop\Test.docx");//设置文档的背景填充模式为图片填充document.Background.Type = Spire.Doc.Documents.BackgroundType.Picture;//设置背景图片document.Background.Picture = Image.FromFile(@"C:\Users\Administrator\Desktop\1.jpg");//保存并打开文档document.SaveToFile("ImageBackground.docx", FileFormat.Docx2013);System.Diagnostics.Process.Start("ImageBackground.docx");}}
}