SetUnderline
function SetUnderline(Underline: XlUnderlineStyle = null): voidDescription
Sets an underline of the type specified in the request to the current font. This method will work only with the text format of the cell.
Parameters
Underline type.
Returns
voidTry It
var oWorksheet = Api.GetActiveSheet();
var oRange = oWorksheet.GetRange("B1");
oRange.SetValue("This is just a sample text.");
var oCharacters = oRange.GetCharacters(9, 4);
var oFont = oCharacters.GetFont();
oFont.SetUnderline("xlUnderlineStyleSingle");