How do i insert hyperlink in specific location?

Aspose.Words Product Family
1

Hello!


I need to insert hyperlink at speciffic location in my doc. For example I have a very long text and I must insert a link at 20th line after the 5th char. I tried to use the DocumentBuilder class and MovaToParagraph functinos, but it doesnot support the chars movement.

I am using the aspose words version 9.5.
Thanks!
2

Hi Alex,

Thanks for your inquiry.

Aspose.Words loads flow documents which are not laid out into specific lines or pages so there is no method to move to a specific line.

Instead I suggest to use a bookmark at the specific character you want to insert the Hyperlink at and then use the DocumentBuilder.MoveToBookmark method to move to that position.

Thanks,

3

I can’t find how to place the bookmark in spicific location that i need.


I have the following info :

1. paragraph number
2. char number
3. lenght

actually what I need is:
a. to find a text whose location descibed be info bellow
b. replace the found text with hyperlink



Any suggestions ?
4

Dear Alex,


Thank you for additional information.

In case you know just position where you need to put hyperlink it is easy use bookmark as Adam recommended above. Here you can find how to insert bookmark and here how to work with bookmark.


In case you know which text exactly should be replaced by hyperlink you can use IReplacingCallback interface implementation:

Document doc = new Document(MyDir + “test.docx”);
// Here we search for searchword
Regex regex = new Regex(searchword, RegexOptions.IgnoreCase);
// Here is simple replace call using IReplacingCallback
doc.Range.Replace(regex, new ReplaceEvaluator(replacewithHyperlink), false);
// Save the output document.
doc.Save(MyDir + “out.docx”);

Implementaion of IReplaceCallback interface may be such as the following:

private class ReplaceEvaluator : IReplacingCallback
{
///
/// This method is called by the Aspose.Words find and replace engine for each match.
///
private string mHyperlink;
public ReplaceEvaluator(string hyperlink)
{
mHyperlink = hyperlink;
}
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.
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);
}
// Here you may replace text by passed hyperlink
DocumentBuilder builder = new DocumentBuilder(e.MatchNode.Document as Document);

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

builder
.InsertHyperlink(displayText, mHyperlink, false);

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.