RobinKim-SWEngineer / C-Sharp-project-CourseEnrollmentReporter

App that can export an Excel file using queried data from SQL Server

Course Enrollment Detail Reporter

What is this application about ?

This application can export an Excel file using queried data, which is student`s course enrollment detail from Database.

DB Setup file is included together. The focus of this app is to convert the query result from Database into data table type and further export it to an Excel file.

How this program is made ?

1. MS SQL : Making EnrollmentDetail View using INNER JOIN and saving the calling procedure into Stored procedure.

2. C# : Converting query result, which is a List of Objects into DataTable type using System.Reflection and exporting to an Excel file using DocumentFormat.OpenXml

   • Conversion process of a List of objects to a DataTable type is described in my C# snippet repository : List to DataTable Converter

     Inside Tester.ModuleTester, there's a test code for the conversion of List to DataTable. You can paste commented code to Program.cs and see whether it's format changed to DataTable correctly.

   • Exporting an Excel file consists of creating a workbookPart -> a worksheetPart -> workwheet and loading data through SheetData. Below is SpreadSheetDocument component's diagram, but you don't really need to memorize the process since it`s rather building blocks like LEGOs than some logics behind.

     

   • Once a Excel document is created, we move contents inside DataTable to SheetData cell by cell and later by row : sheetData.AppendChild(new Row(new List<Cell>));

   • Finally save the Workbook !