[英]Extracting field values from a Word Document using openxml SDK
I am trying to extract form fields from a word document. 我正在尝试从Word文档中提取表单字段。 The word document uses some textboxes and checkboxes to create a type of form.
Word文档使用一些文本框和复选框来创建一种类型的表单。 I want to programmatically be able to extract the values in the controls using C#.
我想以编程方式能够使用C#提取控件中的值。 I thought that OpenXML may be able to allow that, but I haven't been able to figure it out.
我以为OpenXML可能允许这样做,但我一直无法弄清楚。
Here is a screenshot of a sample form in a MS Word document: 这是MS Word文档中的示例表单的屏幕截图:
Use the DocumentFormat.OpenXml Nuget package; 使用DocumentFormat.OpenXml Nuget包;
Sample Code: 样例代码:
using (var doc = WordprocessingDocument.Open("OpenXMLTest.docx", false))
{
Console.WriteLine("Title = " + doc.ExtendedFilePropertiesPart.Properties.TitlesOfParts.InnerText);
Console.WriteLine("Subject = " + doc.PackageProperties.Subject);
{
foreach (var control in doc.ContentControls())
{
Console.WriteLine( control.Title + "==>" + control.Value);
}
}
}
and included extension: 并包括扩展名:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Wordprocessing;
public static class ContentControlExtensions
{
public static IEnumerable<ContentControl> ContentControls(this OpenXmlPart part)
{
var results = new List<ContentControl>();
IEnumerable<OpenXmlElement> parents = part.RootElement
.Descendants()
.Where(e => e is SdtProperties)
.Select(p => p.Parent);
foreach(var parent in parents)
{
ParseContentControl(results, parent);
}
return results;
}
private static void ParseContentControl(List<ContentControl> results, OpenXmlElement parent)
{
var sdtAlias = parent.ChildElements.Where(p => p is SdtProperties).FirstOrDefault()
.ChildElements.Where(c => c is SdtAlias).FirstOrDefault();
if (sdtAlias != null)
{
string value = string.Empty;
var name = ((SdtAlias)sdtAlias).Val;
var sdtContentCell = parent.ChildElements.Where(p => p is SdtContentCell).FirstOrDefault();
if (sdtContentCell != null)
{
value = sdtContentCell.InnerText;
if (value == "Click or tap here to enter text.")
{
value = null;
}
}
var sdtid = parent.ChildElements.Where(p => p is SdtProperties).FirstOrDefault()
.ChildElements.Where(c => c is SdtId).FirstOrDefault();
var id = ((SdtId)sdtid).Val;
var sdtTag = parent.ChildElements.Where(p => p is SdtProperties).FirstOrDefault()
.ChildElements.Where(c => c is Tag).FirstOrDefault();
var tag = ((Tag)sdtTag).Val;
results.Add(new ContentControl() { Title = name, Value = value, id = id, Tag = tag });
}
}
public static IEnumerable<ContentControl> ContentControls(
this WordprocessingDocument doc)
{
foreach (var cc in doc.MainDocumentPart.ContentControls())
yield return cc;
foreach (var header in doc.MainDocumentPart.HeaderParts)
foreach (var cc in header.ContentControls())
yield return cc;
foreach (var footer in doc.MainDocumentPart.FooterParts)
foreach (var cc in footer.ContentControls())
yield return cc;
if (doc.MainDocumentPart.FootnotesPart != null)
foreach (var cc in doc.MainDocumentPart.FootnotesPart.ContentControls())
yield return cc;
if (doc.MainDocumentPart.EndnotesPart != null)
foreach (var cc in doc.MainDocumentPart.EndnotesPart.ContentControls())
yield return cc;
}
public class ContentControl
{
public string Title {get; set; }
public string Value { get; set; }
public string Tag { get; set; }
public string id { get; set; }
}
}
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