The EditMask property of the C1DataColumn object is used to specify an input mask template for end-user data entry. The input mask string is composed of special characters that represent either an input character that the user must enter or a literal character that will be skipped over on input. Valid template characters are as follows:

The EditMask must be a string composed of the following symbols:

1. Wildcards

   0          digit

   9          digit or space

   #          digit or sign

   L          letter

   ?          letter or space

   A          letter or digit

   a          letter, digit, or space

   &          any character

2. Localized characters

   .          localized decimal separator

   ,          localized thousand separator

   :          localized time separator

   /          localized date separator

3. Command characters

   \          next character is taken as a literal

   >          translate letters to uppercase

   <          translate letters to lowercase

For example:

To write code in Visual Basic

' Set the mask so the user can enter a phone number, with optional area code, and a state in capitals.
Me.C1TrueDBGrid1.Columns(0).EditMask = "(###) 000-0000 St\ate\: >LL"

To write code in C#

// Set the mask so the user can enter a phone number, with optional area code, and a state in capitals.
this.c1TrueDBGrid1.Columns[0].EditMask = "(###) 000-0000 St\\ate\\: >LL";