C# example: How to read an Excel file with OleDb and a simple SQL query?

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C# example: How to read an Excel file with OleDb and a simple SQL query?

Free programming example written by Anton Zamov

This approach is extremely useful when you need to read the
data from an Excel file fast and store the data in a DataTable
for further usage.

using System.Data;
using System.Data.OleDb;

...

String sConnectionString =
"Provider=Microsoft.Jet.OLEDB.4.0;" +
"Data Source=" + [Your Excel File Name Here] + ";" +
"Extended Properties=Excel 8.0;";

OleDbConnection objConn = new OleDbConnection(sConnectionString);

objConn.Open();

OleDbCommand objCmdSelect =new OleDbCommand("SELECT * FROM [Sheet1$]", objConn);

OleDbDataAdapter objAdapter1 = new OleDbDataAdapter();

objAdapter1.SelectCommand = objCmdSelect;

DataSet objDataset1 = new DataSet();

objAdapter1.Fill(objDataset1);

objConn.Close();

...

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