I'm writing an ASP.NET application. I have a textbox on a webform, and I want to force whatever the user types to upper case. I'd like to do this on the front end. You should also note that there is a validation control on this textbox, so I want to make sure the solution doesn't interfere with the ASP.NET validation.
Clarification: It appears that the CSS text transform makes the user input appear in uppercase. However, under the hood, it's still lower case as the validation control fails. You see, my validation control checks to see if a valid state code is entered, however the regular expression I'm using only works with uppercase characters.
This question is related to
javascript
asp.net
html
textbox
uppercase
CSS could be of help here.
style="text-transform: uppercase";"
does this help?
style='text-transform:uppercase'
You can intercept the key press events, cancel the lowercase ones, and append their uppercase versions to the input:
window.onload = function () {
var input = document.getElementById("test");
input.onkeypress = function () {
// So that things work both on Firefox and Internet Explorer.
var evt = arguments[0] || event;
var char = String.fromCharCode(evt.which || evt.keyCode);
// Is it a lowercase character?
if (/[a-z]/.test(char)) {
// Append its uppercase version
input.value += char.toUpperCase();
// Cancel the original event
evt.cancelBubble = true;
return false;
}
}
};
This works in both Firefox and Internet Explorer. You can see it in action here.
Use a CSS style on the text box. Your CSS should be something like this:
.uppercase
{
text-transform: uppercase;
}
<asp:TextBox ID="TextBox1" runat="server" Text="" CssClass="uppercase"></asp:TextBox>;
Okay, after testing, here is a better, cleaner solution.
$('#FirstName').bind('keyup', function () {
// Get the current value of the contents within the text box
var val = $('#FirstName').val().toUpperCase();
// Reset the current value to the Upper Case Value
$('#FirstName').val(val);
});
Use the text-transform CSS for the front-end and then use the toUpper method on your string server-side before you validate.
I use a simple one inline statement
<asp:TextBox ID="txtLocatorName" runat="server"
style="text-transform:uppercase" CssClass="textbox"
TabIndex="1">
</asp:TextBox>
If you don't want to use css classes you can just use inline style statement.(This one just visibly make uppercase) :)
On Server side use
string UCstring = txtName.Text.ToUpper();
text-transform
CSS property specifies how to capitalize an element's text. It can be used to make text appear in all-uppercase or all-lowercase
CssClass
WebControl.CssClass Property
you can learn more about it - https://developer.mozilla.org/en/docs/Web/CSS/text-transform
use Style="text-transform: uppercase;" or CssClass="upper"
style='text-transform:uppercase'
CSS could be of help here.
style="text-transform: uppercase";"
does this help?
I have done some analysis about this issue on four popular browser versions.
the answer I found is to implement this on keyup in conjunction with the style tag.
<-- form name="frmTest" -->
<-- input type="text" size=100 class="ucasetext" name="textBoxUCase" id="textBoxUCase" -->
<-- /form -->
window.onload = function() {
var input = document.frmTest.textBoxUCase;
input.onkeyup = function() {
input.value = input.value.toUpperCase();
}
};
JavaScript has the "toUpperCase()" function of a string.
So, something along these lines:
function makeUpperCase(this)
{
this.value = this.value.toUpperCase();
}
Set the style on the textbox as text-transform: uppercase?
I have done some analysis about this issue on four popular browser versions.
the answer I found is to implement this on keyup in conjunction with the style tag.
<-- form name="frmTest" -->
<-- input type="text" size=100 class="ucasetext" name="textBoxUCase" id="textBoxUCase" -->
<-- /form -->
window.onload = function() {
var input = document.frmTest.textBoxUCase;
input.onkeyup = function() {
input.value = input.value.toUpperCase();
}
};
Use the text-transform CSS for the front-end and then use the toUpper method on your string server-side before you validate.
I just did something similar today. Here is the modified version:
<asp:TextBox ID="txtInput" runat="server"></asp:TextBox>
<script type="text/javascript">
function setFormat() {
var inp = document.getElementById('ctl00_MainContent_txtInput');
var x = inp.value;
inp.value = x.toUpperCase();
}
var inp = document.getElementById('ctl00_MainContent_txtInput');
inp.onblur = function(evt) {
setFormat();
};
</script>
Basically, the script attaches an event that fires when the text box loses focus.
<telerik:RadTextBox ID="txtCityName" runat="server" MaxLength="50" Width="200px"
Style="text-transform: uppercase;">
I just did something similar today. Here is the modified version:
<asp:TextBox ID="txtInput" runat="server"></asp:TextBox>
<script type="text/javascript">
function setFormat() {
var inp = document.getElementById('ctl00_MainContent_txtInput');
var x = inp.value;
inp.value = x.toUpperCase();
}
var inp = document.getElementById('ctl00_MainContent_txtInput');
inp.onblur = function(evt) {
setFormat();
};
</script>
Basically, the script attaches an event that fires when the text box loses focus.
I use a simple one inline statement
<asp:TextBox ID="txtLocatorName" runat="server"
style="text-transform:uppercase" CssClass="textbox"
TabIndex="1">
</asp:TextBox>
If you don't want to use css classes you can just use inline style statement.(This one just visibly make uppercase) :)
On Server side use
string UCstring = txtName.Text.ToUpper();
Why not use a combination of the CSS and backend? Use:
style='text-transform:uppercase'
on the TextBox, and in your codebehind use:
Textbox.Value.ToUpper();
You can also easily change your regex on the validator to use lowercase and uppercase letters. That's probably the easier solution than forcing uppercase on them.
You can intercept the key press events, cancel the lowercase ones, and append their uppercase versions to the input:
window.onload = function () {
var input = document.getElementById("test");
input.onkeypress = function () {
// So that things work both on Firefox and Internet Explorer.
var evt = arguments[0] || event;
var char = String.fromCharCode(evt.which || evt.keyCode);
// Is it a lowercase character?
if (/[a-z]/.test(char)) {
// Append its uppercase version
input.value += char.toUpperCase();
// Cancel the original event
evt.cancelBubble = true;
return false;
}
}
};
This works in both Firefox and Internet Explorer. You can see it in action here.
I just did something similar today. Here is the modified version:
<asp:TextBox ID="txtInput" runat="server"></asp:TextBox>
<script type="text/javascript">
function setFormat() {
var inp = document.getElementById('ctl00_MainContent_txtInput');
var x = inp.value;
inp.value = x.toUpperCase();
}
var inp = document.getElementById('ctl00_MainContent_txtInput');
inp.onblur = function(evt) {
setFormat();
};
</script>
Basically, the script attaches an event that fires when the text box loses focus.
CSS could be of help here.
style="text-transform: uppercase";"
does this help?
style='text-transform:uppercase'
Why not use a combination of the CSS and backend? Use:
style='text-transform:uppercase'
on the TextBox, and in your codebehind use:
Textbox.Value.ToUpper();
You can also easily change your regex on the validator to use lowercase and uppercase letters. That's probably the easier solution than forcing uppercase on them.
**I would do like:
<asp:TextBox ID="txtName" onkeyup="this.value=this.value.toUpperCase()" runat="server"></asp:TextBox>**
Set the style on the textbox as text-transform: uppercase?
Okay, after testing, here is a better, cleaner solution.
$('#FirstName').bind('keyup', function () {
// Get the current value of the contents within the text box
var val = $('#FirstName').val().toUpperCase();
// Reset the current value to the Upper Case Value
$('#FirstName').val(val);
});
style='text-transform:uppercase'
JavaScript has the "toUpperCase()" function of a string.
So, something along these lines:
function makeUpperCase(this)
{
this.value = this.value.toUpperCase();
}
CSS could be of help here.
style="text-transform: uppercase";"
does this help?
<!-- Script by hscripts.com -->
<script language=javascript>
function upper(ustr)
{
var str=ustr.value;
ustr.value=str.toUpperCase();
}
function lower(ustr)
{
var str=ustr.value;
ustr.value=str.toLowerCase();
}
</script>
<form>
Type Lower-case Letters<textarea name="address" onkeyup="upper(this)"></textarea>
</form>
<form>
Type Upper-case Letters<textarea name="address" onkeyup="lower(this)"></textarea>
</form>
I just did something similar today. Here is the modified version:
<asp:TextBox ID="txtInput" runat="server"></asp:TextBox>
<script type="text/javascript">
function setFormat() {
var inp = document.getElementById('ctl00_MainContent_txtInput');
var x = inp.value;
inp.value = x.toUpperCase();
}
var inp = document.getElementById('ctl00_MainContent_txtInput');
inp.onblur = function(evt) {
setFormat();
};
</script>
Basically, the script attaches an event that fires when the text box loses focus.
JavaScript has the "toUpperCase()" function of a string.
So, something along these lines:
function makeUpperCase(this)
{
this.value = this.value.toUpperCase();
}
Set the style on the textbox as text-transform: uppercase?
Why not use a combination of the CSS and backend? Use:
style='text-transform:uppercase'
on the TextBox, and in your codebehind use:
Textbox.Value.ToUpper();
You can also easily change your regex on the validator to use lowercase and uppercase letters. That's probably the easier solution than forcing uppercase on them.
<!-- Script by hscripts.com -->
<script language=javascript>
function upper(ustr)
{
var str=ustr.value;
ustr.value=str.toUpperCase();
}
function lower(ustr)
{
var str=ustr.value;
ustr.value=str.toLowerCase();
}
</script>
<form>
Type Lower-case Letters<textarea name="address" onkeyup="upper(this)"></textarea>
</form>
<form>
Type Upper-case Letters<textarea name="address" onkeyup="lower(this)"></textarea>
</form>
You can intercept the key press events, cancel the lowercase ones, and append their uppercase versions to the input:
window.onload = function () {
var input = document.getElementById("test");
input.onkeypress = function () {
// So that things work both on Firefox and Internet Explorer.
var evt = arguments[0] || event;
var char = String.fromCharCode(evt.which || evt.keyCode);
// Is it a lowercase character?
if (/[a-z]/.test(char)) {
// Append its uppercase version
input.value += char.toUpperCase();
// Cancel the original event
evt.cancelBubble = true;
return false;
}
}
};
This works in both Firefox and Internet Explorer. You can see it in action here.
Use the text-transform CSS for the front-end and then use the toUpper method on your string server-side before you validate.
Use a CSS style on the text box. Your CSS should be something like this:
.uppercase
{
text-transform: uppercase;
}
<asp:TextBox ID="TextBox1" runat="server" Text="" CssClass="uppercase"></asp:TextBox>;
here is a solution that worked for me.
http://plugins.jquery.com/project/bestupper
You have to get the JavaScript from http://plugins.jquery.com/files/jquery.bestupper.min.js.txt and there you go.
Works like a charm!
<telerik:RadTextBox ID="txtCityName" runat="server" MaxLength="50" Width="200px"
Style="text-transform: uppercase;">
I realize it is a bit late, but I couldn't find a good answer that worked with ASP.NET AJAX, so I fixed the code above:
function ToUpper() {
// So that things work both on FF and IE
var evt = arguments[0] || event;
var char = String.fromCharCode(evt.which || evt.keyCode);
// Is it a lowercase character?
if (/[a-z]/.test(char)) {
// convert to uppercase version
if (evt.which) {
evt.which = char.toUpperCase().charCodeAt(0);
}
else {
evt.keyCode = char.toUpperCase().charCodeAt(0);
}
}
return true;
}
Used like so:
<asp:TextBox ID="txtAddManager" onKeyPress="ToUpper()" runat="server"
Width="84px" Font-Names="Courier New"></asp:TextBox>
Use the text-transform CSS for the front-end and then use the toUpper method on your string server-side before you validate.
I would do this using jQuery.
<script src="Scripts/jquery-1.3.2.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function() {
$("#txt").keydown(function(e) {
if (e.keyCode >= 65 & e.keyCode <= 90) {
val1 = $("#txt").val();
$("#txt").val(val1 + String.fromCharCode(e.keyCode));
return false;
}
});
});
</script>
You must have the jQuery library in the /script folder.
JavaScript has the "toUpperCase()" function of a string.
So, something along these lines:
function makeUpperCase(this)
{
this.value = this.value.toUpperCase();
}
Why not use a combination of the CSS and backend? Use:
style='text-transform:uppercase'
on the TextBox, and in your codebehind use:
Textbox.Value.ToUpper();
You can also easily change your regex on the validator to use lowercase and uppercase letters. That's probably the easier solution than forcing uppercase on them.
**I would do like:
<asp:TextBox ID="txtName" onkeyup="this.value=this.value.toUpperCase()" runat="server"></asp:TextBox>**
I realize it is a bit late, but I couldn't find a good answer that worked with ASP.NET AJAX, so I fixed the code above:
function ToUpper() {
// So that things work both on FF and IE
var evt = arguments[0] || event;
var char = String.fromCharCode(evt.which || evt.keyCode);
// Is it a lowercase character?
if (/[a-z]/.test(char)) {
// convert to uppercase version
if (evt.which) {
evt.which = char.toUpperCase().charCodeAt(0);
}
else {
evt.keyCode = char.toUpperCase().charCodeAt(0);
}
}
return true;
}
Used like so:
<asp:TextBox ID="txtAddManager" onKeyPress="ToUpper()" runat="server"
Width="84px" Font-Names="Courier New"></asp:TextBox>
Set the style on the textbox as text-transform: uppercase?
$().ready(docReady);
function docReady() {
$("#myTextbox").focusout(uCaseMe);
}
function uCaseMe() {
var val = $(this).val().toUpperCase();
// Reset the current value to the Upper Case Value
$(this).val(val);
}
This is a reusable approach. Any number of textboxes can be done this way w/o naming them. A page wide solution could be achieved by changing the selector in docReady.
My example uses lost focus, the question did not specify as they type. You could trigger on change if thats important in your scenario.
I would do this using jQuery.
<script src="Scripts/jquery-1.3.2.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function() {
$("#txt").keydown(function(e) {
if (e.keyCode >= 65 & e.keyCode <= 90) {
val1 = $("#txt").val();
$("#txt").val(val1 + String.fromCharCode(e.keyCode));
return false;
}
});
});
</script>
You must have the jQuery library in the /script folder.
text-transform
CSS property specifies how to capitalize an element's text. It can be used to make text appear in all-uppercase or all-lowercase
CssClass
WebControl.CssClass Property
you can learn more about it - https://developer.mozilla.org/en/docs/Web/CSS/text-transform
use Style="text-transform: uppercase;" or CssClass="upper"
$().ready(docReady);
function docReady() {
$("#myTextbox").focusout(uCaseMe);
}
function uCaseMe() {
var val = $(this).val().toUpperCase();
// Reset the current value to the Upper Case Value
$(this).val(val);
}
This is a reusable approach. Any number of textboxes can be done this way w/o naming them. A page wide solution could be achieved by changing the selector in docReady.
My example uses lost focus, the question did not specify as they type. You could trigger on change if thats important in your scenario.
Use a CSS style on the text box. Your CSS should be something like this:
.uppercase
{
text-transform: uppercase;
}
<asp:TextBox ID="TextBox1" runat="server" Text="" CssClass="uppercase"></asp:TextBox>;
here is a solution that worked for me.
http://plugins.jquery.com/project/bestupper
You have to get the JavaScript from http://plugins.jquery.com/files/jquery.bestupper.min.js.txt and there you go.
Works like a charm!
Use a CSS style on the text box. Your CSS should be something like this:
.uppercase
{
text-transform: uppercase;
}
<asp:TextBox ID="TextBox1" runat="server" Text="" CssClass="uppercase"></asp:TextBox>;
Source: Stackoverflow.com