What is OleDbDataAdapter
OleDbDataAdapter is a part of the ADO.NET Data Provider and it resides in the System.Data.OleDb namespace. OleDbDataAdapter provides the communication between the Dataset and the OleDb Data Sources. We can use OleDbDataAdapter Object in combination with Dataset Object.
The OleDbDataAdapter Object and DataSet objects are combine to perform both Data Access and Data Manipulation operations in the OleDb Data Sources. When the user perform the SQL operations like Select , Insert etc. in the data containing in the Dataset Object , it won't directly affect the Database, until the user invoke the Update method in the OleDbDataAdapter.
connetionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Your mdb filename;"
sql = "Your SQL Statement Here like Select * from product"
You have to replace the string with your realtime variables.