Ajax Control Toolkit -- filteredtextboxextender (text filtering)

Filtertextboxextender

Targetcontrolid- Textbox ID for text filtering

Filtertype-Filtering type, numbers, lowercaseletters (lower case), upcaselettes (upper case) and custom (default)

Filtermode-Validchars (default) and invalidchars (this attribute does not exist in earlier versions). When any value is set, filtertype must be custom, that is to say, filtertype can be set to two types at the same time (custom and any one of them). For details, see the example.

Validchars-Valid character, which must contain custom in filtermode

Invalidchars-Invalid character, which must contain m in flitermode

Filterinterval-the default is 250 ms

More information of filtertextboxextender

Demo >>>

 1  <  ASP: scriptmanager  ID  = "Scriptmanager1"  Runat  = "Server"     />  
  2     <  Div  >  
  3    <  Ajaxtoolkit: filteredtextboxextender  ID  = "Filteredtextboxextender1"  Runat  = "Server"  
  4   Targetcontrolid  = "Textbox1"  Filtertype  = "Numbers"  Clientidmode  = "Inherit"  >  
 5     </  Ajaxtoolkit: filteredtextboxextender  >  
  6     <  Ajaxtoolkit: filteredtextboxextender  ID  = "Filteredtextboxextender2"  Runat  = "Server"  
  7  Targetcontrolid  = "Textbox2"  Filtertype  = "Lowercaseletters"  >  
  8     </  Ajaxtoolkit: filteredtextboxextender  >  
  9     < Ajaxtoolkit: filteredtextboxextender  ID  = "Filteredtextboxextender3"  Runat  = "Server"  
  10   Targetcontrolid  = "Textbox3"  Filtertype  = "Custom, numbers"  Validchars  = "+-= /*()."  >  
 11     </  Ajaxtoolkit: filteredtextboxextender  >  
  12     <  Table  Border  = "0"  >  
  13     < Tr  >  
  14     <  TD  >  
  15   Only digits are allowed here:
  16     </  TD  >  
 17     <  TD  >  
  18     <  ASP: textbox  ID  = "Textbox1"  Runat  = "Server"  >  
  19    </  ASP: textbox  >  
  20     </  TD  >  
  21     </  Tr  >  
 22     <  Tr  >  
  23     <  TD  >  
  24   Only lower-case letters are allowed here:
  25    </  TD  >  
  26     <  TD  >  
  27     <  ASP: textbox  ID  = "Textbox2"  Runat = "Server"  >  
  28     </  ASP: textbox  >  
  29     </  TD  >  
  30    </  Tr  >  
  31     <  Tr  >  
  32     <  TD  >  
  33  Only Math symbols (+,-, *,/, =,.) and numbers:
  34     </  TD  >  
  35     <  TD  >  
  36     < ASP: textbox  ID  = "Textbox3"  Runat  = "Server"  > </  ASP: textbox  >  
  37     </  TD  >  
  38    </  Tr  >  
  39     </  Table  > 

Additionally, we want to add that the control is different from the verification control. If the content does not match, it cannot be entered.