How to make text string bold in one a cell of table in word document?

I have a word docuement and it has a table in it. I need to make font bold in the first cell of fourth row of the table in the word document. The rows always vary but bold is always in first cell of fourth row.
How can we do this?

Hi

Thanks for your inquiry. You can just get all runs form the first cell of the fourth row and make them bold. For example see the following code:

// Open document.
Document doc = new Document(@"Test001\in.doc");
// Get table, which should be changed.
Table table = doc.FirstSection.Body.Tables[0];
// Get cell, where formating should changed.
Cell cell = table.Rows[3].FirstCell;
// Get Runs in this cell.
NodeCollection runs = cell.GetChildNodes(NodeType.Run, true);
// Loop through all runs and make them bold.
foreach(Run run in runs)
{
    run.Font.Bold = true;
}
// save output document
doc.Save(@"Test001\out.doc");

Hope this helps.
Best regards.