Csharp 如何在受保护的 Word 文档 (NetOffice.Word C#) 中获取所需的范围

发布于07月12日

我有一份受保护的文件(doc.ProtectionType == wdAllowOnlyFormFields).它有一些可以编辑的区域.其他一切都受到保护，甚至不会被复制.我正在使用NetOffice.Word库，并try 以编程方式查找文本并在Found范围内创建一个书签.问题是，当我try 调用方法wordDoc.Content.Duplicate.Find.Execute(smthParams)时，发生了异常"COMException: This method or property is not available because the object refers to a protected area of the document.".而且，我可以手动获取任何范围的文本，没有任何问题:

var range = doc.Content.Duplicate;
range.SetRange(start, end);

在以这种方式获得的范围内，我可以毫无问题地创建一个书签.但我无法通过这种方式找到与我要查找的文本对应的范围.我正在try 以这种方式创建书签:

public void CreateBookmarkTest()
{
    Document doc = Context.WordDocument;

    var searchText = "smth text";
    var bookmarkName = "newBookmark";
    
    using Range docRange = doc.Content.Duplicate;

    foreach (var paragraph in docRange.Paragraphs)
    {
        using Range paragraphRange = paragraph.Range;
        var text = paragraphRange.Text;
        var startParagraph = paragraphRange.Start;
        var endParagraph = paragraphRange.End;

        var startIndex = text.IndexOf(searchText);
        if (startIndex >= 0)
        {
            text = GetParagraphTextWithHiddenSymbols(paragraphRange, text);
            startIndex = text.IndexOf(searchText);
            var startFoundRange = startParagraph + startIndex;
            var end = startFoundRange + searchText.Length;

            paragraphRange.SetRange(startFoundRange, end);

            var foundText = paragraphRange.Text;
            if (foundText == searchText)
            {
                doc.Bookmarks.Add(bookmarkName, paragraphRange);
                break;
            }
        }
    }
}

private string GetParagraphTextWithHiddenSymbols(Range paragraphRange, string initialText)
{
    var text = initialText;
    foreach (Field field in paragraphRange.Fields)
    {
        int index = text.IndexOf(field.Result.Text);
        if (index >= 0)
        {
            text = text.Replace(field.Result.Text, $"{{{field.Code.Text}}} {field.Result.Text}{(char)21}");
        }
    }
    return text;
}

问题是，在这种情况下，并不总是foundText == searchText.有时foundText会被抵消，而我还想不出如何修复它.在我看来，这种方式既慢又不理想.也许有一些方法可以正确地实现搜索和文本替换(从Find.Execute到Find.Execute是最理想的).我还在想，有没有什么方法可以让这些区域允许编辑(或者只知道当前区域是否允许编辑)？

我试着从下面的答案中使用奥斯卡的 idea 进行转换.代码的效果要好得多，但它也会在包含大量不受保护的输入字段的大段落上出错.

非常感谢你的帮助，朋友！

using NetOffice.WordApi.Enums; using Word = NetOffice.WordApi; Test(); //The following code applies only to the content( main body) of the document itself and does not include the footnote, comments, header, footer ......, and other parts of the document. void Test() { //just test file for me //const string fFullnameStr = @"C:\Users\oscar\Dropbox\VS\VBA\stackoverflow.docm"; const string fFullnameStr = @"C:\Users\oscar\Dropbox\VS\stackoverflow\VBA\Naive Bayes classifier.docx"; Word.Application wordApplication = new Word.Application(); wordApplication.DisplayAlerts = WdAlertLevel.wdAlertsNone; wordApplication.Visible = true; //just for test to watch Word.Document doc = wordApplication.Documents.Open(fFullnameStr);//Context.WordDocument; /* for test if(doc.ProtectionType!= WdProtectionType.wdAllowOnlyFormFields) Console.WriteLine(doc.ProtectionType); doc.Close(); doc.Protect(WdProtectionType.wdAllowOnlyFormFields); just for test */ int i = 0; //var searchText = "smth text"; // https://github.com/Aldman/ProtectedRangeSearch/blob/main/FindTextTests.cs#L15 var searchText = "based on a common";//"diameter features";//"based on a common";//"assume that the value"; var bookmarkName = "newBookmark"; Word.Range rng = doc.Content;//doc.Content.Duplicate; if (doc.ProtectionType != WdProtectionType.wdAllowOnlyFormFields) { if (doc.ActiveWindow.View.ShowFieldCodes) doc.ActiveWindow.View.ShowFieldCodes = false; while (rng.Find.Execute(findText: searchText, matchCase: true, matchWholeWord: true, matchWildcards: false, matchSoundsLike: false, matchAllWordForms: false, forward: true, wrap: WdFindWrap.wdFindStop)) { rng.Bookmarks.Add(bookmarkName + i++.ToString()); //rng.Select();//just for test } } else { foreach (var paragraph in rng.Paragraphs)//http://msdn.microsoft.com/en-us/en-us/Iibrary/office/ff837006.aspx 轉址為:https://learn.microsoft.com/en-us/office/vba/api/Word.Range.Paragraphs { Word.Range range = paragraph.Range; var text = range.Text; var index = text.IndexOf(searchText); int indexPre = index; var start = 0; #region GetParagraphTextWithHiddenSymbols foreach (Word.Field item in range.Fields) { index = text.IndexOf(item.Result.Text, start); if (index >= 0) { text = text.Substring(0, index) + "{" + item.Code.Text + "}" + item.Result.Text + ((char)21).ToString() + text.Substring(index + item.Result.Text.Length); start = (text.Substring(0, index) + "{" + item.Code.Text + "}" + item.Result.Text + ((char)21).ToString()).Length; } //text = text.Replace(item.Result.Text, //"{" +item.Code.Text+"}"+ item.Result.Text + (char)21); //fieldsResultLength += item.Result.Text.Length + 2 + 1;//2="{}" of field code,1=chr(21) placehold of the fields } start = 0; //there will be "" both the start and end of a ContentControl object, so have to plus 2 for the two placeholders foreach (Word.ContentControl item in range.ContentControls) { text = text.Substring(start, item.Range.Start - 1) + " " + item.Range.Text + " " + text.Substring(item.Range.End - 1); } #endregion while (index >= 0) { index = text.IndexOf(searchText); start = range.Start; var end = range.End; start += index; //+ fieldsResultLength; end = start + searchText.Length; range.SetRange(start, end); while (range.Text != searchText && end <= range.End) { range.SetRange(++start, ++end); if (range.Text == searchText) break; } if (range.Text != searchText) { Console.WriteLine(range.Text); System.Diagnostics.Debugger.Break(); } range.Bookmarks.Add(bookmarkName + i++.ToString()); text = paragraph.Range.Text; start = 0; index = text.IndexOf(searchText, indexPre + 1); indexPre = index; } } } wordApplication.Visible = true; //just for test to watch doc.ActiveWindow.View.ReadingLayout = false;//just for test to watch if (doc.ProtectionType != WdProtectionType.wdNoProtection) doc.Unprotect(123.ToString());//just for test }

<Project Sdk="Microsoft.NET.Sdk"> <PropertyGroup> <OutputType>Exe</OutputType> <TargetFramework>net6.0</TargetFramework> <ImplicitUsings>enable</ImplicitUsings> <Nullable>enable</Nullable> </PropertyGroup> <ItemGroup> <PackageReference Include="NetOfficeFw.Core" Version="1.9.3" /> <PackageReference Include="NetOfficeFw.Word" Version="1.9.3" /> </ItemGroup> <ItemGroup> <FrameworkReference Include="Microsoft.WindowsDesktop.App.WindowsForms" /> </ItemGroup> </Project>

void Test_ShowFieldCodes() { //just test file for me const string fFullnameStr = @"C:\Users\oscar\Dropbox\VS\VBA\stackoverflow.docm"; Word.Application wordApplication = new Word.Application(); wordApplication.DisplayAlerts = WdAlertLevel.wdAlertsNone; //wordApplication.Visible = true; //just for test to watch Word.Document doc = wordApplication.Documents.Open(fFullnameStr);//Context.WordDocument; int i = 0; var searchText = "smth text"; var bookmarkName = "newBookmark"; Word.Range rng = doc.Content;//doc.Content.Duplicate; if (doc.ProtectionType != WdProtectionType.wdAllowOnlyFormFields) { while (rng.Find.Execute(findText: searchText, matchCase: true, matchWholeWord: true, matchWildcards: false, matchSoundsLike: false, matchAllWordForms: false, forward: true, wrap: WdFindWrap.wdFindStop)) { if ((bool)rng.Information(WdInformation.wdInContentControl)) rng.SetRange(rng.Paragraphs[1].Range.ContentControls[1].Range.End + 1, rng.Paragraphs[1].Range.ContentControls[1].Range.End + 1); rng.Bookmarks.Add(bookmarkName + i++.ToString()); } } else { //rng = doc.Content.Duplicate; foreach (var paragraph in rng.Paragraphs)//http://msdn.microsoft.com/en-us/en-us/Iibrary/office/ff837006.aspx 轉址為:https://learn.microsoft.com/en-us/office/vba/api/Word.Range.Paragraphs { Word.Range range = paragraph.Range; var text = range.Text; var index = text.IndexOf(searchText); int indexPre = 0; var start = 0; while (index >= 0) { if (paragraph.Range.Fields.Count > 0) { doc.ActiveWindow.View.ShowFieldCodes = true; text = paragraph.Range.Text; //if there are fields this will be the index of ShowFieldCodes=false + index of ShowFieldCodes=true and plus 1 index = index + text.IndexOf(searchText, indexPre) + 1; doc.ActiveWindow.View.ShowFieldCodes = false; } start = range.Start; var end = range.End; start += index; end = start + searchText.Length; range.SetRange(start, end); while (range.Text != searchText && end <= range.End && range.End < doc.Content.End - 1) { //range.Select();//just for test range.SetRange(++start, ++end); if (range.Text == searchText) break; } if (range.Text != searchText && range.End < doc.Content.End - 1) { Console.WriteLine(range.Text); System.Diagnostics.Debugger.Break(); } if (range.Text == searchText) { if ((bool)range.Information(WdInformation.wdInContentControl)) range.SetRange(range.Paragraphs[1].Range.ContentControls[1].Range.End + 1, range.Paragraphs[1].Range.ContentControls[1].Range.End + 1); range.Bookmarks.Add(bookmarkName + i++.ToString()); } text = paragraph.Range.Text; start = 0; index = text.IndexOf(searchText, indexPre + 1); indexPre = index; } } } wordApplication.Visible = true; //just for test to watch //doc.Unprotect(1.ToString());//just for test }

Csharp 如何在受保护的 Word 文档 (NetOffice.Word C#) 中获取所需的范围

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