How to Validate the textbox using Ascii values?

Posted by Sapna under VB.NET on 12/27/2009 | Views : 18648 | Status : [Member] | Replies : 2

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I have 3 text boxes and 1 Listview.
I want it to work like,
When i press enter the control from Textbox1 should pass to Textbox2,from Textbox2 to Textbox3 and now when i press "Enter" the values of all 3 textboxes should get passed to listview.
PLEASE HELP IT'S URGENT.......

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Posted by: Virendradugar on: 12/28/2009 [Member] [MVP] Silver

0	Hi Sapna, Onkeypress event of the textbox, you need to check the keycode. If it is of enter key then pass focus to next control. See Demo: <asp:TextBox ID="TextBox1" runat="server" onkeypress="CheckValue();"></asp:TextBox> Here is JavaScript function. <script type="text/javascript" language="javascript"> function CheckValue() { if(event.keyCode == 13) document.getElementById('<%=TextBox2.ClientID %>').focus(); } } Hope this helps. Thank you for posting @ DotNetFunda. Thanks, Virendra Dugar Sapna, if this helps please login to Mark As Answer. \| Alert Moderator

Hi Sapna,

Onkeypress event of the textbox, you need to check the keycode. If it is of enter key then pass focus to next control.

See Demo:

 <asp:TextBox ID="TextBox1" runat="server" onkeypress="CheckValue();"></asp:TextBox>

Here is JavaScript function.

<script type="text/javascript" language="javascript">

function CheckValue()

{



        if(event.keyCode == 13)

            document.getElementById('<%=TextBox2.ClientID %>').focus();

    }

}

Hope this helps.

Thank you for posting @ DotNetFunda.

Thanks,
Virendra Dugar

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

Posted by: Sagarp on: 1/2/2010 [Member] Bronze

0	You can do this in the Key_Press event of that particular TextBox in which you want to enters only the a-z. Use this code in the keypress event int ascii = Convert.ToInt16(e.KeyChar); if ((ascii >= 97 && ascii <= 122) \|\| (ascii == 8)) { e.Handled = false; } else { e.Handled = true; } Ascii values of "a" to "z" is 97 to 122. And 8 is ascii vaue of Backspace is used to delete the characters using backspace Thanks SagarP http://www.emanonsolutions.net http://emanonsolutions.blogspot.com/ Sapna, if this helps please login to Mark As Answer. \| Alert Moderator

You can do this in the Key_Press event of that particular TextBox in which you want to enters only the a-z.

Use this code in the keypress event

int ascii = Convert.ToInt16(e.KeyChar);

if ((ascii >= 97 && ascii <= 122) || (ascii == 8))

{

e.Handled = false;

}

else

{

e.Handled = true;

}

Ascii values of "a" to "z" is 97 to 122. And 8 is ascii vaue of Backspace is used to delete the characters using backspace

Thanks
SagarP
http://www.emanonsolutions.net
http://emanonsolutions.blogspot.com/

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

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