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how can i restrict user from inputting special characters, letters and numbers in C#?
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Toniyo Jackson 25-Nov-10 2:18am
   
For winforms r web?

if ((e.KeyChar >= 48 && e.KeyChar <= 57) || e.KeyChar == 8 )
  e.Handled = false;
else
  e.Handled = true;

use ASCII Table for set that which key you want to be pressed and whichone not, this code can be used for enter only numeric data and allow the backspace .
   
v4
Comments
Dalek Dave 25-Nov-10 4:41am
   
Good Call
Have a look at this recent question and the answers. This should help you since a lot of alternatives are shown.

how shall i check the letter is a to z or A to Z[^]
   
Comments
Dalek Dave 25-Nov-10 4:42am
   
Good link
sujeet101 2-Dec-10 5:13am
   
good link

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