prefix

Button btn RadioButton rad
CheckBox

chk

RadioButtonList

radl

CheckBoxList

chkl

TextBox

txt

DataGrid

dgrd

RequiredFieldValidator

valr

DataList

dlst

CompareValidator

valc

DrpDownList

drop

RangeValidator

valg

Image

img

RegularExpressionValidator

vale

ImageButton

ibtn

CustomValidator

valx

Label

lbl

ValidationSummary

vals

LinkButton

lbtn

Table

tbl

ListBox

lst

Calendar

cal