http://www.eggheadcafe.com/community/sql-server/13/10457683/how-to-import-large-data-from-excel-to-sql.aspx
Using sqlBulk Class you can export excel file to DataBase.
Use this code-
protected void btnSend_Click(object sender, EventArgs e)
{
String strConnection = "Data Source=MySystem;Initial Catalog=MySamplesDB;Integrated Security=True";
//file upload path
string path = fileuploadExcel.PostedFile.FileName;
//Create connection string to Excel work book
string excelConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 12.0;Persist Security Info=False";
//Create Connection to Excel work book
OleDbConnection excelConnection =new OleDbConnection(excelConnectionString);
//Create OleDbCommand to fetch data from Excel
OleDbCommand cmd = new OleDbCommand("Select [ID],[Name],[Designation] from [Sheet1$]",excelConnection);
excelConnection.Open();
OleDbDataReader dReader;
dReader = cmd.ExecuteReader();
SqlBulkCopy sqlBulk = new SqlBulkCopy(strConnection);
//Give your Destination table name
sqlBulk.DestinationTableName = "Excel_table";
sqlBulk.WriteToServer(dReader);
excelConnection.Close();
}
Try this code and let me know.