E
e argument, Closing event (forms), 204-209
editing XML schemas, 607-611
Empty Project template, 34
Empty Web Project template, 34
Enabled property (System timer), 155
Enabled property (Windows timer), 152
encryption. See cryptographic services
enumerating files in folders, 132-137
Directory class for, 135-137
DirectoryInfo class for, 132-135
event procedures, manipulating forms with, 199-204
event processing, 146-162
form Load events, 149-150
raising events from custom classes, 157-162
timer classes, 150-157
EventSamples project, 149-162
examining XML documents, 614-615
examples in this book, accessing, 26
Exception class, 17, 180, 190
exception handling, 17-18, 179-192
catching multiple exceptions in Try blocks, 185-187
Finally clause, using (example), 187-190
not catching exceptions vs., 182-185
throwing exceptions programmatically, 190-192
unstructured vs. structured, 180-181
ExecuteNonQuery( ) (OleDbCommand class), 328, 382, 517
ExecuteScalar( ) (OleDbCommand class), 328, 375
executing source code, 11-13
exposing Access databases, 6-7