Spire.Doc for .NET是一款专门对 Word 文档进行操作的 .NET 类库。在于帮助开发人员无需安装 Microsoft Word情况下，轻松快捷高效地创建、编辑、转换和打印 Microsoft Word 文档。拥有近10年专业开发经验Spire系列办公文档开发工具，专注于创建、编辑、转换和打印Word/PDF/Excel等格式文件处理，小巧便捷。

E-iceblue 功能类库Spire 系列文档处理组件均由中国本土团队研发，不依赖第三方软件，不受其他国家的技术或法律法规限制，同时适配国产操作系统如中科方德、中标麒麟等，兼容国产文档处理软件 WPS（如 .wps/.et/.dps 等格式

Spire.Doc for.NET 最新下载（qun：767755948）https://www.evget.com/product/3368/download

Spire.Doc支持将图片作为背景图片或正文内容的一部分插入文本框。本文演示如何通过以下代码片段实现这些目的。

第 1 部分：将背景图像插入文本框

using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System.Drawing;
namespace InsertTextBox
{
class Program
{

static void Main(string[] args)
{

//Create a Word document
Document doc = new Document();
Section section = doc.AddSection();
Paragraph paragraph = section.AddParagraph();

//Append a Textbox to paragraph
TextBox tb = paragraph.AppendTextBox(120, 200);

//Set the position of Textbox
tb.Format.HorizontalOrigin = HorizontalOrigin.Page;
tb.Format.HorizontalPosition = 50;
tb.Format.VerticalOrigin = VerticalOrigin.Page;
tb.Format.VerticalPosition = 50;

//Set the fill effect of Textbox as picture
tb.Format.FillEfects.Type = BackgroundType.Picture;

//Fill the Textbox with a picture
tb.Format.FillEfects.Picture = Image.FromFile("Background.jpg");

//Save to file
doc.SaveToFile("InsertBackgroundImage.docx", FileFormat.Docx2013);

}
}
}

输出：

第 2 部分：将图像插入文本框正文

using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System.Drawing;
namespace InsertTextBox
{
class Program
{

static void Main(string[] args)
{

//Create a Word document
Document doc = new Document();
Section section = doc.AddSection();
Paragraph paragraph = section.AddParagraph();

//Append a Textbox to paragraph
TextBox tb = paragraph.AppendTextBox(140, 250);

//Set the position of Textbox
tb.Format.HorizontalOrigin = HorizontalOrigin.Page;
tb.Format.HorizontalPosition = 50;
tb.Format.VerticalOrigin = VerticalOrigin.Page;
tb.Format.VerticalPosition = 50;

//Insert an image to body of Textbox
Paragraph para1 = tb.Body.AddParagraph();
Image image = Image.FromFile("Shakespeare.jpg");
DocPicture picture = para1.AppendPicture(image);
para1.Format.AfterSpacing = 8;
para1.Format.HorizontalAlignment = HorizontalAlignment.Center;

//Insert text to body of Textbox
Paragraph para2 = tb.Body.AddParagraph();
TextRange textRange = para2.AppendText("(26 Apr.1564–§C23 Apr.1616) English poet, playwright, and actor, widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist.");
textRange.CharacterFormat.FontName = "Cambria";
textRange.CharacterFormat.FontSize = 9;
para2.Format.LineSpacing = 15;
para2.Format.HorizontalAlignment = HorizontalAlignment.Left;
para2.Format.SuppressAutoHyphens = true;

//Save to file
doc.SaveToFile("InsertToBody.docx", FileFormat.Docx2013);

}
}
}

输出：

以上便是如何将图像插入文本框的教程，如果您有其他问题也可以继续浏览本系列文章，获取相关教程。