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//String Str="select * from DataHis";
string strConn = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = SocketDataHis.mdb " ;
OleDbConnection myConn = new OleDbConnection (strConn ) ;
myConn.Open ( ) ;
OleDbCommand inst = new OleDbCommand (Str,myConn ) ;
inst.ExecuteNonQuery ( ) ;
myConn.Close ( ) ;
MessageBox.Show("ok");
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