//schemaTable将取到所有用户表的信息,schemaTable取到指定表名的表的所有信息

OleDbConnection conn = new OleDbConnection(strConn);

conn.Open();

DataTable schemaTable = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new Object[]{null, null, null, "table"});

DataTable schemaTable2 = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new Object[]{null, null, /*tablename*/, null});

conn.Close();