i have a question on asp.net lower case to upper case and how to write java script for that

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THIS IS MY JAVASCRIPT

XML

<script language="javascript" type="text/javascript">
       function ToUpper(id) {
           document.getElementById(id).value = document.getElementById(id).value.toUpperCase();
       }
   </script>

my problem is i enter total name and it will change to uppercase
if i enter another text in middle of name the letter is showed from last
example

first entered name
abc xyz

SQL

after i want to change name in mddle like bellow
abc defxyz
<pre lang="sql">if enter any two letters after one letter the blinking cursor go to last of name and loke bellow
abc d xyzef

how to solve can you tell me

Posted 26-Apr-15 23:35pm

Parazival

Updated 27-Apr-15 17:28pm

v4

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Andy Lanng · Answer 1 · 2015-04-27T00:20:00

The issue is that editing the text inputs value as someone types will reset the caret (cursor) position to after the new text.

You need to A: Get where the caret is before changing the text and B: Set the caret after changing the text:

JavaScript

function A(element){
 //You will won't to add some error checking here - such as if(!element.selection) return 0;
 return element.selectionStart;
}

function B(element, caret){
 //Selecting a range with the same start and end will place the caret at that point
 element.setSelectionRange(caret,caret);
}

//just pass the element instead of id
function toUpper(element){
  var caret = A(this);
  this.value = this.value.ToUpperCase();
  B(this,caret);
}

Oh and pass the whole element (you don't HAVE to though):

ASP.NET

<asp:textbox id="txtPatientname" runat="server" onkeyup="ToUpper(this)" cssclass="txtbox" font-names="Calibri" font-size="Medium" height="20px" maxlength="50" tabindex="6" tooltip="Patient name" width="175px" xmlns:asp="#unknown"></asp:textbox>

Hope that helps :)