number validation for a variable

Posted by Sahoo under C# on 12/30/2011 | Points: 10 | Views : 2996 | Status : [Member] | Replies : 4

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hi

can any body give me trick to validate a variable that it has some numeric value or not on server side.

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Posted by: Self-innovator on: 12/30/2011 [Member] Bronze | Points: 25

0	In javascript u try this function EnterOnlyNumbers(x) { var len=x.value.length; var s_charcode=0; for(var s_i=0;s_i<len;s_i++) { s_charcode=x.value.charCodeAt(s_i); if(!((s_charcode>=48 && s_charcode<=57))) { alert("Enter only numbers"); x.value=""; x.focus(); return false; } } return true; } <asp:textbox id="txt1" ruat="server" onChange="EnterOnlyNumbers(this)"> if u want to do in server side make use of validation contols..Rangevalidator Join Hands Change lives Thanks & Regards Straight Edge Society Sahoo, if this helps please login to Mark As Answer. \| Alert Moderator

In javascript u try this

function EnterOnlyNumbers(x) 

  {

    var len=x.value.length;

    var s_charcode=0;

    for(var s_i=0;s_i<len;s_i++)

    {

     s_charcode=x.value.charCodeAt(s_i);

     if(!((s_charcode>=48 && s_charcode<=57)))

     {

       alert("Enter only numbers");

       x.value="";

       x.focus();

       return false;

     }

    }

    return true;

   }

<asp:textbox id="txt1" ruat="server" onChange="EnterOnlyNumbers(this)">

if u want to do in server side make use of validation contols..Rangevalidator

Join Hands Change lives
Thanks & Regards
Straight Edge Society

Sahoo, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Sahoo on: 12/30/2011 [Member] Starter | Points: 25

0	sorry sir I need server side code only . Sahoo, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Blessyjees on: 1/2/2012 [Member] Bronze | Points: 25

0	Hi, You can validate this using regular expression string status="invalid"; if(Regex.IsMatch(txtbox1.text,@"^\d+$") { status="valid"; } Blessy Baby Digitalmesh Softech pvt Ltd https://blessybaby.wordpress.com/ Sahoo, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: dhirenkaunar-15094 on: 4/17/2012 [Member] Starter | Points: 25

0	Hi, You can also validate using tryParse() int a; if(int.TryParse(txtbox1.Text,out a)) { return "is a number"; } else { return "is not a number"; } Thanks & Rgards, Dhiren Kumar Kaunar Sahoo, if this helps please login to Mark As Answer. \| Alert Moderator

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