I am using ASP.NET 3.5 and C#.
On my page I need to have a Text box that must not be visible to the user but it MUST be there when you look at the Page Source, reason being, another program called Eloqua will be looking at the page source and it must get the value of that text box.
The value of that text box will be populated based on what the user selects.
Thus, I cant set the text box property to Visible = False because then it will not be in the source HTML and I can't set the Enabled = False because I do not want the user to see the text box.
Is there some property I can use to make this text box hidden to the user but still visible in the page source?
My ASP.NET text box
<asp:TextBox ID="txtTester" runat="server"></asp:TextBox>
You can use a hidden field.
<asp:HiddenField id="myHiddenInput" runat="server" />
Use it just like a textbox.
Try this to invisible textbox instead of server side Visible property :
myTextBox.Style.Add("visibility", "hidden");
// or :
myTextBox.Style.Add("display", "none");
First thought: Can you use a hidden field? This would be much more suitable (<asp:hiddenfield ID="blah" runat="Server" /> if you want a .NET control).
If the app won't take that though you can actually just put "style='display: none;'" in the code-infront of the page. Intellisense won't like it, but it'll render just fine (EG: <asp:TextBox id="txtField" style="display: none;" runat="server" />)
Also from the codebehind you can do txtField.Attributes.Add("style", "display: none");
Or you could also just give it a CssClass "hidden" which in your CSS is defined as ".hidden { display: none;}"
The CSS class or just using a hidden field would be my recommendations.
Page.RegisterHiddenField or asp:HiddenField
CSS:
.hidden-div
{
display: none;
}
HTML:
<div class="hidden-div">
<input ... />
</div>
It will cause your input to be hidden, but it's gonna be visible in source code.
EDIT: Sorry, I misread it. I thought you wanted to hide an input. But it doesn't matter anyway, just replace input with basically anything.
If it must be a textbox for whatever reason just hide it with css:
<input type="text" name="blah" style="display:none" />
By Setting Visible = "false" in server side will not render the control. You should either use asp:Hidden or INPUT type="hidden". Other option is using CSS, by setting display:none.
Why not use a hidden field:
<input type="hidden" name="blah" />
How about using CSS to hide a div containing the text box:
.hidden {
position: absolute;
left: -9999px;
}
Then within your page:
<div class="hidden">
<asp:TextBox ID="TextBox1" runat="server" Text="hi"></asp:TextBox>
</div>
Hope this helps.
Simply, Try to create a CSS class and attach it to your TextBox as the following:
CSS Class Style
<style>
.Hide {
display:none;
}
</style>
Textbox using CssClass="Hide"
<asp:TextBox ID="txtTester" runat="server" CssClass="Hide"></asp:TextBox>
Note: you can't use validation with the Hidden control
<asp:TextBox ID="TextBox2" runat="server" visible="false"></asp:TextBox>
Related
I have a text box
<asp:textbox runat="server" id="checkIn" ClientIDMode="Static" ReadOnly="true">
</asp:textbox>
The text in the text box is inputted through a Jquery DatePicker. In some code behind I am getting the text from this text box like so.
string x=checkIn.Text;
Why can I not pull the inputted date from the text box? I am guessing it is to do with the fact that it is readonly as when I remove this it works?
Can anyone help me?
In ASP.Net, if the readonly value is changed, it will revert to the original value on the postback.
You can use a wrokaround however, instead of specifying readonly declaratively, assign it as an attribute in code-behind. i.e.
instead of
<asp:textbox runat="server" id="checkIn" ReadOnly="true"...
apply this is code-behind
checkIn.Attributes.Add("readonly", "readonly");
But, the viewstate still may not work with this.
More info:
There is a subtle difference between readonly and disabled controls in HTML. The disabled ones will not be submitted with the form, however the readonly ones will. Literally, readonly is just readonly, but disabled is actually disabled.
From W3C: http://www.w3.org/TR/html401/interact/forms.html#h-17.12
(Get down to section 17.13.2 Successful controls under 17.13 Form submission)
ASP.Net however, reverts to the original value on postback if a control is declared like that i.e. if the attribute is set during init. Which is why setting the attribute later (in page load) will not affect this behavior.
Use HTML input tag instead of asp:textbox
Use this:-
<input type="text" readonly="readonly" runat="server" id="checkIn" clientidmode="Static"/>
Instead of this:-
<asp:textbox runat="server" id="checkIn" ClientIDMode="Static" ReadOnly="true"></asp:textbox>
Write the following code in your code behind file, for asp.net .cs or class file and for vb in .vb file.
You will have to write it on page load event, depending on if you want it before postback or after or irrespective of both...
textbox.Attributes.Add("readonly", "readonly");
Try to make readonly to false before posting the values through jQuery or Java-Script. It should work.
$('#tbox').removeAttr('readonly');
Suppose I have a asp:button then on client click I need to call a function which remove the read-only attribute from the text-box.
<asp:Button ID="MessageButton" runat="server" Text="Hellow"
OnClientClick="return changeAttribute()" />
<asp:textbox runat="server" id="checkIn" ClientIDMode="Static" ReadOnly="true">
</asp:textbox>
and change attribute function in javascript as follows
function changeAttribute()
{
$('#checkIn').removeAttr('readonly');
return true;
}
You can also leave the readOnly attribute off in the asp:TextBox control and use jquery $('#textbox').attr('readOnly','readOnly').
You can actually get the value of a readonly textbox if it is within the form.
var text = Page.Request.Form[TextBox.UniqueID];
Sorry this response is a few years late!
Apply in asp.cs Page : AttrName.Attributes.Add("readonly", "readonly");
Please use:
Request.Form[txtText.UniqueID]
I had the same issue with jQuery, however fixed with a trick:
$('#txtBoxID').removeAttr('readonly');
/// Do your stuff here..
$('#txtBoxID').add('readonly');
;)
How do I customize an asp:Button class?
This is like this proble: How to set css style to asp.net button? but not really since the button is inherited from a cs class.
I have this bit of code in an ASPX file:
<div class="buttonContainer" style="clear:both;width:100%;text-align:left">
<asp:Button ID="btnProceed" runat="server" Text="Next" OnClick="ProceedButton_Clicked" Enabled="true" />
</div>
So, if I want to make the button bigger or bolder text, how would I do it?
btnProceed is defined in a .cs file like this:
protected global::System.Web.UI.WebControls.Button btnProceed;
So, is there some way I can inherit a System.Web.UI.WebControls.Button class and change the font size?
All your server controls are ultimately going to render some HTML markup to the browser. So Apply a CSS class to your button and style it the way you want. You can use the CssClass property to set it.
<asp:Button ID="btnProceed" runat="server" Text="Hi" CssClass="yourClass" />
And put this style in your css file which is being included in your aspx page.
.yourClass
{
font-size:72px;
font-weight:bold;
}
You could be able to customize any style for your button with this
.buttonContainer input
{
font-size: 14px;
font-weight: bold;
/**** ETC ***** /
}
you can set Font Size at server-side by using btnProceed.Font.Size = FontUnit.Point(50);
I was trying to display lblName1 and lblName2 only if they have text. Even when i dont have any value for lblName2, the break still has an impact. Can someone please advice me if there is any other way to display or conditionally display
<asp:Label ID="lblName1" runat="server" Visible= "false" ></asp:Label> <br />
<asp:Label ID="lblName2" runat="server" Visible= "false"> </asp:Label>
Thanks in advance..
Give the label a CSS class name and set the margin for that class:
<asp:Label ID="lblName1" CssClass="Testing123" runat="server" Visible= "false" ></asp:Label> <br />
.Testing123{ margin-bottom: 20px; }
If the Label is not rendered then no gap will be created.
You might consider adding a litteral to handle the br and this way play with its visibilty :
<asp:Literal runat=server Id=C_lit_Br><br /></asp:Literal>
with in your codebehind :
if (!lblName2.Visible)
C_lit_Br.Visible=false;
It is a quick patch, but it should work.
It is better to use literal in that case:
In literal text you also write html in it
wrap the labels in p tags:
<p><label1></p>
<p><label2></p>
Going with what you have and ignoring using any code behind changes, you can use some css to provide a break without using a <br /> tag.
By this, I mean if you were to give your <label> controls a css class, class="labelStyle
.labelStyle{
float: left;
clear: left;
}
Your html produced would look like
<span class="labelStyle">Some Text</span><span class="labelStyle">More Text</span>
If there is no value in the Labels, then your html would contain two empty span tags.
This will move the 2nd label onto the next line. However this may not fit in with the rest of your html, and because you are floating elements, then your overall layout might break.
An example is here http://jsfiddle.net/2v93f/
I am using a button that has to be invible and should be used by a javascript function.
<asp:Button ID ="btnDummy1" runat="server" Visible ="true" OnClick="btnSubmit1_Click" width="0px" height="0px"/
I cannot keep visible = false as it the javascript will not use invible content in the poage. I havetried to give width=0 and height=0, still it showws up in Chrome. What do you guys think i should do?
Thanks in advance :)
A pretty clean approach in ASP.Net it give it a "hidden" class:
<asp:Button ID ="btnDummy1" runat="server" CssClass="hidden" />
Then in your stylesheet:
.hidden { display: none; }
If you set it to Visible="False" then the code will not be executed.
Instead I think you should wrap it in a <div> and set display:none via css:
<div style="display: none;">
<asp:Button ID ="btnDummy1" runat="server" OnClick="btnSubmit1_Click" />
</div>
adding style="display:none" would hide the button till you make it visible again
<asp:Button ID ="btnDummy1" runat="server" OnClick="btnSubmit1_Click" style="display:none"/>
How about
style="display:none"
for the button instead of Visible = "true".
Can you just use a hidden form field in this case? This is generally the preferred method of passing information along.
See http://www.tizag.com/htmlT/htmlhidden.php
<asp:Button ID="btnMyOrders" runat="server" Text="my orders" CssClass="dropdown-item" OnClick="btnMyOrders_Click" Visible="False" />
Example then in Form(){
btn.Visible = true; to show it again
}
I think the first question you should ask yourself is : why would I put in my HTML doc a button that should not be visible ?
An HTML document should be used ONLY TO DESCRIBE A CONTENT'S SEMANTICS. So an HTML doc should ONLY contain the content you want to publish and extra data to explain the content's SEMANTIC !! NOTHING about the way it is displayed, NOTHING about the way it behaves !!
All displaying and behaviors questions should be managed with CSS and Javascript, NEVER within HTML itself.
Any element needed for Javascript only purpose should be added in the doc by Javascript itself !
You should never find, in an HTML doc, such things as prev/next buttons for a javascript picture gallery for example. The HTML doc should only contain the pictures list, than your JS script will change the way this list is shown, making it a eye candy gallery and add buttons for navigation.
So in your example, your saying you want to add in your HTML doc an invisible button with some Javascript actions on it.... that's probably an example of some content that should never be in the HTML doc.
i have a tagtextbox on my page
when a user selects a category that category name goes to tagtextbox
now i want that this category name user cant change but he can append some more tags
means first tag becomes readonly and further he can add too in same text box
This is not possible.
Instead, you can put the first category name in a <span>, and put the textbox after the span.
You can then apply border: none to the textbox and make your own border around the entire thing to make it look like a single textbox.
CSS :
<style type="text/css">
.div {
margin:20px;
padding:10px;
background:#ccc;
float:left;
}
.textarea {
border:0;
display:block;
font-size:12px;
padding:5px 5px 0;
outline:none;
}
.span {
display:block;
background:#fff;
font-size:14px;
padding:5px 5px 5px;
color:green;
outline:none;
}
</style>
HTML :
<div class="div">
<div class="span">
<asp:TextBox runat="server" ID="txtNumber" BorderStyle="None" />
<asp:RegularExpressionValidator runat="server" ID="RegularExpressionValidator1" ValidationExpression="\d+" ControlToValidate="txtNumber" ErrorMessage="Only Numbers are allowed" Display="Dynamic" />
</div>
</div>
You can't make part of a textbox editable and another not.
My suggestion would be to change the type of element from a TextBox to a div or span via Javascript as soon as the user begins to enter the next tag.
If you want to allow append has in "paste" action, then you can't do that. Else and you just want to append via your code, why not use just a div to show what he has selected and add the selections to your post on a hidden textbox?
Adding to what SLaks said - Here is an example of a CSS & HTML hack where someone has added a span under the textbox. To make it look like it is part of the same textbox there is a border round the enclosing div. It looks quite effective.
textbox with uneditable name at the bottom