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Find and Replace tags with curly {{brackets}}

We have existing template in Word that uses {{ as open tag and }} as closing tag. I’ve tried 2 hrs but am not able to do the REPLACE unless I use underscore to open and close tag.


Is there an escape character that I can use? Some examples will be very much appreciated. Thanks.

Hi

Thanks for your request. You can use simple replace method to replace such tags with values. See the code below:

Document doc = new Document(@"Test001\in.doc");

doc.Range.Replace("{{tag}}", "value", false, false);

doc.Save(@"Test001\out.doc");

Also, you can replace all such tags with merge fields and use Mail Merge feature to fill the document with data. Please see the following link and code below:

http://www.aspose.com/documentation/java-components/aspose.words-for-java/simple-mail-merge-explained.html

NOTE: when you use curly brackets in regular expression, you should escape it with backslash because curly brackets are reserved.

[Test]

public void Test001()

{

Document doc = new Document(@"Test001\in.doc");

doc.Range.Replace(new Regex(@"\{\{(?.*?)\}\}"), new ReplaceEvaluatorFindAndInsertMergefield(), false);

doc.Save(@"Test001\out.doc");

}

private class ReplaceEvaluatorFindAndInsertMergefield : IReplacingCallback

{

///

/// This method is called by the Aspose.Words find and replace engine for each match.

/// This method highlights the match string, even if it spans multiple runs.

///

ReplaceAction IReplacingCallback.Replacing(ReplacingArgs e)

{

// This is a Run node that contains either the beginning or the complete match.

Node currentNode = e.MatchNode;

// The first (and may be the only) run can contain text before the match,

// in this case it is necessary to split the run.

if (e.MatchOffset > 0)

currentNode = SplitRun((Run)currentNode, e.MatchOffset);

// This array is used to store all nodes of the match for further removing.

ArrayList runs = new ArrayList();

// Find all runs that contain parts of the match string.

int remainingLength = e.Match.Value.Length;

while (

(remainingLength > 0) &&

(currentNode != null) &&

(currentNode.GetText().Length <= remainingLength))

{

runs.Add(currentNode);

remainingLength = remainingLength - currentNode.GetText().Length;

// Select the next Run node.

// Have to loop because there could be other nodes such as BookmarkStart etc.

do

{

currentNode = currentNode.NextSibling;

}

while ((currentNode != null) && (currentNode.NodeType != NodeType.Run));

}

// Split the last run that contains the match if there is any text left.

if ((currentNode != null) && (remainingLength > 0))

{

SplitRun((Run)currentNode, remainingLength);

runs.Add(currentNode);

}

// Create Document Buidler aond insert MergeField

DocumentBuilder builder = new DocumentBuilder(e.MatchNode.Document as Document);

builder.MoveTo((Run)runs[runs.Count - 1]);

string fieldName = e.Match.Groups["FieldName"].Value;

builder.InsertField(string.Format("MERGEFIELD {0}", fieldName), string.Format("«{0}»", fieldName));

// Now remove all runs in the sequence.

foreach (Run run in runs)

run.Remove();

// Signal to the replace engine to do nothing because we have already done all what we wanted.

return ReplaceAction.Skip;

}

///

/// Splits text of the specified run into two runs.

/// Inserts the new run just after the specified run.

///

private static Run SplitRun(Run run, int position)

{

Run afterRun = (Run)run.Clone(true);

afterRun.Text = run.Text.Substring(position);

run.Text = run.Text.Substring(0, position);

run.ParentNode.InsertAfter(afterRun, run);

return afterRun;

}

}

Hope this helps.

Best regards.

Thank you, Alexey, for the quick response. This was exactly what I did:


try
{
int iReplaceCount;
//Open the template document
string templateFile = Request.PhysicalApplicationPath + “Test.docx”;
string docContract = Request.PhysicalApplicationPath + “Test.pdf”;
Document doc = new Document(templateFile);

// Replace TAG with content
string text = doc.Range.Text;
iReplaceCount = doc.Range.Replace("{{CLIENT_NAME}}", “D Huynh”, false, true);
iReplaceCount = doc.Range.Replace("{{DAY_SHORT}}", DateTime.Today.ToShortDateString(), false, true);
doc.Save(docContract);
// Display in browser
doc.Save(Response, “Test.pdf”, ContentDisposition.Inline, null);
}

This is what’s in side test.docx:

CLIENT ENROLLMENT PACKAGE<o:p></o:p>

PREPARED FOR: {{CLIENT_NAME}}

DATE: {{TODAY_SHORT}}


and this is what in the PDF:

CLIENT ENROLLMENT PACKAGE
PREPARED FOR: {{CLIENT_NAME}}
DATE: {{TODAY_SHORT}}

The same code works perfectly if I replace the {{ and }} with __ and __. Do I miss a patch? I just downloaded the DLL a week ago. I've attached both files, please review. Thanks.






Hi

Thanks for your request. The problem occurs because you set isMatchWholeWord parameter to true. Curly brackets cannot be a part of word, that is why your code does not work. Please try setting it to false as I did in my code:

doc.Range.Replace("{{tag}}", "value", false, false);

Best regards,

I am sure it is somewhere in the documentation that I overlooked. Thank you!!! You saved me tons of headache, and I am placing my order :wink: