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How to get input as comma and alphabet alone??

P: 14

Im using C# ASP.Net here in the textbox i need to get the input as like follows

,any alphabet or any alphabet,any alphabet for example ,C or C,E like this i want to get the input.The textbox should get only one comma and it should not get any other special can be either by server side code or by the java script code..How should i do this any assistance plz..


May 8 '07 #1
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Expert Mod 15k+
P: 16,027
You'll want to use a regular expression for this.

Read about regular expressions here.

However, your validation should be on both the client side and the server side (in case javascript is disabled).

Does your string have to be case-sensitive, i.e. does it matter if the letter is lower-case?

A possible regular expression:
May 8 '07 #2

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