Index_E

E

emailaddress validation in Regex, example of, 319 “320

email fields, filling out automatically in ASP.NET, 85

encryption, example of, 265 “268

Enter buttons , creating default enter button with ASP.NET, 77

enumeration values, binding combo boxes to, 269 “270

error code, hiding from clients in ASP.NET, 111

error handling in Visual Basic .NET, 23 “24,

explanation of, 18 “19

ErrorProvider controls

highlighting errors with, 29 “30

in Windows forms, 363

event logs, putting messages in, 281 “282

Excel

exporting Web grids to, 171 “173

troubleshooting blank pages in, 172

Excel spreadsheets, returning DataSets from, 173 “175

exception handling, example of, 18 “19

expressions, tightening up using Regex, 333 “ 334