Read from XLS file to table in .NET using C# – this tutorial shows reading Excel files in .NET with Spreadsheet SDK. Use source code sample below to read data from XLS file in CSharp.
C#
const string inputFile = @"PeriodicTableOfElementsSpreadsheet.xls";
// Create new spreadsheet to read xls to table in .net
Spreadsheet spreadsheet = new Spreadsheet();
spreadsheet.LoadFromFile(inputFile);
// Read XLS to table using Spreadsheet SDK
DataTable dt = spreadsheet.ExportToDataTable();
// Close spreadsheet object
spreadsheet.Close();