How do I convert Excel file to PDF using Spire.XLS?

A couple of days back I have got a call and asked how to convert Excel files to PDF using Spire.XLS a .NET component. Hereunder, I am just going to explain the same suing simple code snippet [here we are creating a simple xls file first]:

Create a file:

public void CreateSampleExcel()
        {
            workSheet = workBook.Worksheets[0];
            workSheet.Range["A1"].Text = "This is a sample Excel dcouemnt and created by Spire.XLS for .NET";
            workBook.SaveToFile(_xlsFilePath + _xlsFileName);
        }

In above first we defined a path and initialize the object:

private string _xlsFilePath = HttpContext.Current.Server.MapPath("~/Sample/XLSFiles/");

public SpireExcel(string xlsFileName)
       {
           _xlsFileName = xlsFileName;
           workBook = new Workbook();
       }

There is no need for special settings or implementation just use inbuild functions to convert the file:

workBook.SaveToFile(_xlsFilePath + "mySpirePDFFile.pdf");

And simply invoke this method:

SpireExcel spireExcel = new SpireExcel();
spireExcel.ConvertToPDF(); //Convert to pdf

A complete source code file is attached. Alternatively you can find complete application from here: https://github.com/garora/EIceblueStuffs