TextBox

Posted Date: 16 Jun 2008 Posted By:: narendra Member Level: Silver Member Rank: 1847 Points: 1 Responses: 13

hi friends plz help me.

I have one textbox.In textbox enter only numbers not characters.how validate the textbox data.

plz give the code || give the hint
plz explain with example

Regards
Narendra.

Responses

#249686 Author: Sujit Kumar Member Level: Gold Member Rank: 225 Date: 16/Jun/2008 Rating: Points: 2
use regular expression Regards, Sujit Kumar DotNet Blogs

#249692 Author: Madhavan Member Level: Gold Member Rank: 1561 Date: 16/Jun/2008 Rating: Points: 2
hi, write the following code in class file: #region NumericValidationCheck public bool IsNumeric(string strTextData) { string strLocal = strTextData; Regex objNotPositivePattern = new Regex("[^0-9.]"); Regex objPositivePattern = new Regex("^[.][0-9]+$\|[0-9][.][0-9]+$"); Regex objTwoDotPattern = new Regex("[0-9][.][0-9][.][0-9]*"); if (!objNotPositivePattern.IsMatch(strLocal) && objPositivePattern.IsMatch(strLocal) && !objTwoDotPattern.IsMatch(strLocal)) return true; else return false; } #endregion #region NumericValidationFunction public bool IsNumericValidationFunction(string strTextboxData, out string strErrorMsg) { string strNumericLocal = strTextboxData; bool IsReturn = IsNumeric(strNumericLocal); if (IsReturn) { strErrorMsg = ""; return true; } else { strErrorMsg = "Input pattern is not correct....Enter valid number for "; return false; } } #endregion In C# application: use that class file dll and call the function like this... class file: Validation.cs string strerrmsg=""; Validation obj=new Validation(); obj.IsNumericValidationFunction(textbox1.text,out strerrmsg); .... . Regards, Madhavan

#249693 Author: sreejith Member Level: Gold Member Rank: 0 Date: 16/Jun/2008 Rating: Points: 2
use [0-9]as regular expression

#249694 Author: Anjali Sharma Member Level: Gold Member Rank: 1121 Date: 16/Jun/2008 Rating: Points: 2
hi try this using JavaScript it will allows only numbers to enter not characters var chkok="0123456789"; var chkstr=document.Form1.cname.value; var allvalid=true; for(i=0;i<chkstr.length;i++) { ch=chkstr.charAt(i); for(j=0;j<chkok.length;j++) if(ch==chkok.charAt(j)) break; if(j==chkok.length) { allvalid=false; break; } } if(!allvalid) { alert("Enter only Numbers in TextBox"); document.Form1.cname.focus(); return false; }

#249699 Author: sreejith Member Level: Gold Member Rank: 0 Date: 16/Jun/2008 Rating: Points: 2
try this <script language="JavaScript"> <!-- //Makes sure that the entered value is a number // use via onKeyPress="checkNum()" on the textbox function checkNum(){ var carCode = event.keyCode;if ((carCode < 48) \|\| (carCode > 57)){ alert('Please enter only numbers.'); event.cancelBubble = true event.returnValue = false; }} //--></script>

#249700 Author: soumya Member Level: Silver Member Rank: 0 Date: 16/Jun/2008 Rating: Points: 2
can use regular expression ^[0-9]+$

#249711 Author: Debasmit Samal Member Level: Gold Member Rank: 484 Date: 16/Jun/2008 Rating: Points: 2
On the KeyPress event of your textbox if (Char.IsNumber(e.KeyChar) != true) e.Handled = true; Debasmit Samal

#249717 Author: pappan Member Level: Gold Member Rank: 0 Date: 16/Jun/2008 Rating: Points: 2
hi, Use filtertext box in ajax for number validation

#249719 Author: sachin Gopal Member Level: Silver Member Rank: 0 Date: 16/Jun/2008 Rating: Points: 2
Use ajax control toolkit -FilterTextbox http://www.asp.net/AJAX/AjaxControlToolkit/Samples/FilteredTextBox/FilteredTextBox.aspx

#249736 Author: Kapil Dhawan Member Level: Gold Member Rank: 512 Date: 16/Jun/2008 Rating: Points: 2
try this script for the code function Num() { var Code = event.keyCode;if ((Code < 48) \|\| (Code > 57)) { alert('Numbers Only'); event.cancelBubble = true event.returnValue = false; } } -- Regards, Kapil

#249737 Author: Kiran Kumar Reddy Member Level: Gold Member Rank: 82 Date: 16/Jun/2008 Rating: Points: 2
TextBox Posted Date: 16 Jun 2008 Total Responses: 9 Posted By: narendra Member Level: Silver Points: 1 hi friends plz help me. I have one textbox.In textbox enter only numbers not characters.how validate the textbox data. plz give the code \|\| give the hint plz explain with example Regards Narendra. use regular expression Regards, Kiran.

#249983 Author: Ratheesh Member Level: Gold Member Rank: 711 Date: 16/Jun/2008 Rating: Points: 1
^[0-9]+$

#289466 Author:

Ultimaterengan

Member Level: Gold Member Rank: 9 Date: 29/Aug/2008 Rating: 2 out of 5

Points: 2

hi,
Use RegularExpression for This purpose .


 <form id="form1" runat="server">
    <div>
        <asp:CheckBoxList ID="CheckBoxList1" runat="server" AutoPostBack="True" Width="743px" >
        
            <asp:ListItem>a</asp:ListItem>
            <asp:ListItem>b</asp:ListItem>
            <asp:ListItem>c</asp:ListItem>
            <asp:ListItem>d</asp:ListItem>
        </asp:CheckBoxList>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
         
        <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="TextBox1"
            ErrorMessage="Please Enter only Numeric" ValidationExpression="[0-9]*"></asp:RegularExpressionValidator>
        <br />
        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" ControlToValidate="TextBox2"
            ErrorMessage="enter only Alpha-Numeric" ValidationExpression="[a-z]*"></asp:RegularExpressionValidator>
        <asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" />
    </div>
    </form>

Thanks & Regards
G.Renganathan
Nothing is mine ,Everything is yours!!!

http://renganathan1984.blogspot.com/

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Thanks & RegardsG.RenganathanNothing is mine ,Everything is yours!!!

Thanks & Regards
G.Renganathan
Nothing is mine ,Everything is yours!!!