Display row based on condition

Aspose.Words Product Family
1

Hi,

how is it possible to print a row of a table in the document based on a condition ?
I’m generating a pdf document from word with mail merging and would like to get one row of a table depending on a condition. I cannot use something like this { IF { MERGEFIELD xxx } = "true" "text 1". "text 2". }, because i will loose the columns format of the row…

Thanks

2

Hi Simone,

Thanks
for your inquiry. In your case, I suggest you following solution.

  • Implament IFieldMergingCallback Interface.
  • In the FieldMergingCallback event, move the cursor to the position of mail merge field and get the row node by using Node.GetAncestor method.
  • Do the appropriate action on current row

Hope this helps you. Please let me know if I can be of any further assistance.

Moreover, I suggest you please read following documentation links for your kind reference.
https://docs.aspose.com/words/java/mail-merge-and-reporting/
https://docs.aspose.com/words/java/how-to-apply-custom-formatting-during-mail-merge/

3

Thanks Tahir,

but i’m offering the creation of the pdf as a service through xml file and i cannot pass an IFieldMergingCallback object as parameter…

Isn’t there another way of doing it ? I think it’s a very common requirement in creating documents.
Infact i’m using a very old tool for creating documents with Delphi (ekrtf) and there is this very simple and clear approach:

\if(condition
…text or whatever…
\endif

I cannot think it’s not possible with aspose…

Thank you very much.

Simone

4

Hi Simone,

Thanks for your inquiry. Please read following documentation link for your kind reference.
https://docs.aspose.com/words/net/supported-platforms/#com
https://reference.aspose.com/words/net/aspose.words.mailmerging/mailmerge/execute/

In
your case, I suggest you to create a wrapper class in C#/VB.NET and use
it in your Delphi code. Please check following wrapper class for your
kind reference. Hope this helps you.

namespace AsposeComWrapper
{
    class ComWrapper
    {
        public void MailMerge(string input, string output, string xmlpath)
        {
            Document doc = new Document(input);
            // Add a handler for the MergeField event.
            doc.MailMerge.FieldMergingCallback = new HandleMergeField();
            DataSet ds = new DataSet();
            ds.ReadXml(xmlpath);
            // Execute mail merge.
            doc.MailMerge.ExecuteWithRegions(ds);
            // Save resulting document with a new name.
            doc.Save(output);
        }
        private class HandleMergeField : IFieldMergingCallback
        {
            // / 
            // / This is called when merge field is actually merged with data in the document.
            // / 
            void IFieldMergingCallback.FieldMerging(FieldMergingArgs e)
            {
                if (e.FieldValue.ToString() == "True")
                {
                    DocumentBuilder builder = new DocumentBuilder(e.Document);
                    builder.MoveToMergeField(e.DocumentFieldName);
                    Row row = (Row)builder.CurrentNode.GetAncestor(NodeType.Row);
                    // Your code...
                    // Your code...
                    e.Text = "";
                }
            }
            void IFieldMergingCallback.ImageFieldMerging(ImageFieldMergingArgs e)
            {
                // Do nothing.
            }
        }
    }
}
5

Hi Tahir,

I dont’t want to use Aspose with Delphi. I mentioned Delphi only because i use a delphi tool which is called ekrtf which does something very similar of mail merging done with Aspose and I liked to share an example using IF.
Please refer to this post about using IF in templates: https://forum.aspose.com/t/46058

6

Hi Simone,

Thanks for sharing the detail. I have answered your query here. Please follow that thread for further proceedings.

https://docs.aspose.com/words/net/supported-platforms/#com