LoadFromDataReader

This method loads data from a System.Data.IDataReader into a spreadsheet.

Basic usage

The IDataReader can be used for reading data from many different types of databases, in this sample we are using an SQLite database.

 // lets connect to the sample database for some data
 using (var sqlConn = new SQLiteConnection(connectionString))
 { 
     sqlConn.Open(); 
     using (var sqlCmd = new SQLiteCommand("select CompanyName, [Name], Email, c.Country, o.OrderId, orderdate, ordervalue, currency from Customer c inner join Orders o on c.CustomerId=o.CustomerId inner join SalesPerson s on o.salesPersonId = s.salesPersonId ORDER BY 1,2 desc", sqlConn)) 
     { 
         using (var sqlReader = sqlCmd.ExecuteReader())
         { 
             // Create a workbook and load the data from the IDataReader
             using(var package = new ExcelPackage())
             {
                 var sheet = package.Workbook.Worksheets.Add("TestSheet");
                 // The second argument specifies if we should print headers on the first row or not
                 sheet.Cells["A1"].LoadFromDataReader(sqlReader, true);
         } 
     } 
 }

TableStyle

If you supply the parameter TableStyle EPPlus will create a table for the data in the worksheet. The TableStyles enum contains over 60 different table styles to choose from.

sheet.Cells["A1"].LoadFromDataReader(sqlReader, true, TableStyles.Dark1);