how to validate text box in c#.net

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4.00/5 (1 vote)

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C#3.0

C#

so that a text box can accept only alphabetics

Posted 10-Feb-10 19:47pm

sharmarun

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fearrenjith · Answer 1 · 2010-02-10T19:59:00

Solution 1

u can make use f regular expression ^[a-zA-Z]$....compare it with the text box value....if u r in asp, u can use regular expression validator tool or else jst use regex property in the code behind.

Posted 10-Feb-10 19:59pm

fearrenjith

Rahul Sabharwal · Answer 2 · 2010-02-10T20:23:00

add the belowline in page_load event
textbox.Attributes.Add("onkeypress","return EnsureAlphabets();");

in aspx page add the javascript

function EnsureAlphabet()
{ var k=window.event.keyCode;
if(!((k>64&&k<91)||(k>96&&k<123)||k==32||k==45||k==46))
{ window.event.returnValue=false;
}
}

Hir's 4Ever · Answer 3 · 2010-02-10T20:35:00

Solution 3

hi ... above answer is write but u also used ajax control Just download ajax controls lots of control are available just search and download , and use , if u want to used , i used ajax controls .........

Posted 10-Feb-10 20:35pm

Hir's 4Ever