I am writing a simple webform on .net 4.0 framework.
<body>
<form id="form1" runat="server">
<div>
<span>Name</span>
<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
</div>
<div>
<span>Email</span>
<asp:TextBox ID="txtEmail" EnableViewState="false" runat="server"></asp:TextBox>
</div>
<div>
<asp:Button ID="btnButton" runat="server" Text="Submit" />
</div>
</form>
</body>
Issue is when the form renders on browser, I am not getting ClientID for the server side controls. This is strange for me.
The portion of the markup in the browser is
<div>
<input type="submit" name="btnButton" value="Submit" id="btnButton" />
</div>
Notice there is no clientID.
Edit : Client ID something like 'ctl00$MasterPageBody$ctl00$btnButton2'
The client id of the button is btnButton. The other one "ctl..." is when you have your control inside a masterpage. As a side not: If you don´t wan´t asp.net changing your id:s you can set clientidmode='static'.
ClientID is a server side attribute.
You would see the ClientID on the client as the ID attribute:
id="btnButton"
Client id is calculated on the server, it never gets sent to the client.
You need runat="server" to generate a client ID for the control for the reasons mentioned
Related
Bootstrap login form is below:
<form class="form-vertical login-form" runat="server" action="~/Default.aspx">
<label class="control-label visible-ie8 visible-ie9">User Name</label>
<input class="m-wrap placeholder-no-fix" type="text" placeholder="UserName" name="username"/>
<label class="control-label visible-ie8 visible-ie9">Password</label>
<input class="m-wrap placeholder-no-fix" type="password" placeholder="Password" name="password"/>
<button type="submit" class="btn green pull-right" aria-pressed="undefined">
Log In <i class="m-icon-swapright m-icon-white"></i>
</button>
</form>
When the button is clicked, I want to create the connection to the database. So, I need to have sth like this:
protected void (ButtonName)_Click(object sender, EventArgs e)
{
string connStr = "Initial Catalog=LoginCheck; Data Source=MYCOMPUTER; User id=sa; password=000000;";
SqlConnection conn = new SqlConnection(connStr);
conn.Open();
...
}
But it doesn't work like ASP.NET. If I double-click on the button when I am designing, it's not taking me to code behind. Please put me in the right direction!
In ASP.Net, you want to use Server control if you want to post back.
Most of the time, <form> tag is located inside Master Page, so you cannot style it easily.
Here is an example -
<form id="form1" runat="server">
<div class="form-vertical login-form">
<asp:Label runat="server" ID="UsernameLabel"
AssociatedControlID="UserNameTextBox"
CssClass="control-label visible-ie8 visible-ie9">User Name
</asp:Label>
<asp:TextBox runat="server" ID="UserNameTextBox"
CssClass="m-wrap placeholder-no-fix" />
<asp:Label runat="server" ID="PasswordLabel"
AssociatedControlID="PasswordTextBox"
CssClass="control-label visible-ie8 visible-ie9">Password
</asp:Label>
<asp:TextBox runat="server" ID="PasswordTextBox"
CssClass="m-wrap placeholder-no-fix" />
<asp:LinkButton runat="server" ID="SubmitLinkButton"
CssClass="btn btn-default pull-right"
OnClick="SubmitLinkButton_Click">
Log In <i class="m-icon-swapright m-icon-white"></i>
</asp:LinkButton>
</div>
</form>
But it doesn't work like ASP.NET
Your code (aka "code-behind") looks like it expects ASP.Net server controls e.g. <asp:Button runat="server" id="foo"... so it can do a Postback which is the the ASP.NET "web forms" way.
Having said that, you can try
assigning a bootstrap css class to an ASP.net server control to make it look like a bootstrap button (styling)
keep your existing HTML above handle the normal HTTP POST and not deal with server controls (and deal with request.form)
It's your choice based on what works for you. Either way the core concept is based on standard HTTP POST (html form post, asp.net web forms "postback").
Hth...
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button1" />
<asp:TextBox ID="TextBox1"
runat="server">
</asp:TextBox><asp:Button ID="Button2" runat="server" Text="Button2" />
</div>
</form>
</body>
how do i make button2 the default action when the Enter key is pressed?
See image:
http://imgur.com/C9rR0
The defaultbutton property can be specified at the Form level in the form tag as well as at panel level in the <asp:panel> definition tag. The form level setting is overridden when specified at the panel level, for those controls that are inside the panel.
Source: http://forums.asp.net/t/985791.aspx/1
I have the following html:
<html>
<body>
<form runat="server">
Name: <input type="text" name="name" />
<br />
<input type="submit" name="submit" />
</form>
</body>
</html>
How do I retrieve the value in the "name" textbox posted back to the webserver to manipulate in ASP.NET WebForms?
(I know about the ASP.NET built-in controls and the possibilities with them, but I am looking for a "clean" solution without the use of built-in ASP.NET controls)
If you can't, or don't want to use asp.net textboxes, then you can retrieve the name of a regular html textbox like this:
string nameTextPosted = Request.Form["name"];
Just note that textboxes created in this manner will not automatically persist their values across postbacks like asp.net textboxes will.
Simplest solution would be to turn it into a server-side component and access it by it's name. e.g.
<asp:TextBox Id="Name" runat="server"></asp:TextBox>
...
string name = Name.Text;
Unless you have other reasons not to use a component, you'd only be making things much more difficult on your part for no justification.
ASP.net includes Html server controls for backward compatibility for just someone like you fond of html. make your html tags server controls by adding the runat="server" and id properties and you are able to access them inside your server side code with their id.
<form runat="server">
Name: <input type="text" name="name" id="name" runat="server" />
<br />
<input type="submit" name="submit" id="name1" runat="server" />
</form>
Now after this you can control their behavior:
name.Value="Hellow World !"
You have to add id and runat="server" in each control. like this :
<input type="text" name="name" id="name" runat="server" />
Its better to use asp:TextBox like this :
<asp:TextBox ID="name" runat="server"></asp:TextBox>
Got a really weird thing happening on my page. I have some checkbox controls and some of them are rendering like this..
<span confirmmodified="true" class="aspNetDisabled"><input type="checkbox" disabled="disabled" name="ctl00$FormContents$TrackerDetails$OutOfScopeUSQS" id="ctl00_FormContents_TrackerDetails_OutOfScopeUSQS"><label for="ctl00_FormContents_TrackerDetails_OutOfScopeUSQS">Out of scope USQS</label></span>
But some of them are rendering like this...
<input type="checkbox" name="ctl00$FormContents$TrackerDetails$OutOfScopeSQA" id="ctl00_FormContents_TrackerDetails_OutOfScopeSQA"><label for="ctl00_FormContents_TrackerDetails_OutOfScopeSQA">Out of scope USQS</label>
See, no span? Cant work out what is going on I have looked at the page and control and doesnt seem like anything different is happening...
UPDATE: [this is the markup]
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="AuditStateTracker.ascx.cs"
Inherits="Dashboard.controls.AuditStateTracker" %>
<div class="grid_12 alpha">
<h2><asp:Literal runat="server" Text="<%$ Resources:LocalisedText, TrackerMigration%>" /></h2>
</div>
<div class="grid_1">
<asp:CheckBox ID="OutOfScopeUSQS" runat="server" Text="<%$ Resources:LocalisedText, OutOfScopeUSQS %>" />
</div>
<div class="grid_1" runat="server" ID="divOutOfScopeSQA">
<asp:CheckBox ID="OutOfScopeSQA" runat="server" Text="<%$ Resources:LocalisedText, OutOfScopeUSQS %>" />
</div>
<div class="grid_1">
<asp:CheckBox ID="OutOfScopeRS" runat="server" Text="<%$ Resources:LocalisedText, OutOfScopeRS %>" />
</div>
<div class="grid_1" runat="server" ID="divRingFencedSQA">
<asp:CheckBox ID="RingFencedSQA" runat="server" Text="<%$ Resources:LocalisedText, RingFencedSQA %>" />
</div>
<div class="grid_1">
<asp:CheckBox ID="RingFencedRS" runat="server" Text="<%$ Resources:LocalisedText, RingFencedRS %>" />
</div>
<div class="grid_1" runat="server" ID="divBusinessCase">
<asp:CheckBox ID="BusinessCase" runat="server" Text="<%$ Resources:LocalisedText, BusinessCase %>" />
</div>
<div class="grid_1" runat="server" ID="divDelisted" visible="false">
<asp:CheckBox ID="Delisted" runat="server" Text="<%$ Resources:LocalisedText, Delisted %>" />
</div>
The first checkbox is disabled, the second one isn't; that's how asp.net renders disabled checkboxes.
It's throwing that span on there so asp.net can decorate it with the css class aspNetDisabled. This would allow you to (optionally) style disabled controls differently.
Incidentally, this disabled class is actually configurable.
In earlier versions of ASP.NET Microsoft used to render the disabled = "disabled"attribute for your controls. However, since the HTML 4.01 specification, the disabled attribute is not valid anymore for each type of web control. It is still valid for input, but not anymore for span.
So what they've done is add a style class (in CSS) which is set to controls when they are disabled. This is also the case with any controls in a diabled control. By default, this style class is called `aspNetDisabled'.
You can actually use a different name for this class, but not for individual controls. The name of this style class can only be set as a static property on the root class WebControl, for instance at application start in your global.asax.cs.
protected void Application_Start(object sender, EventArgs e)
{
WebControl.DisabledCssClass = "disabled";
}
More annoying is that for checkboxes, ASP.NET renders a span around you checkbox with the defined style class on it.
<span disabled="disabled">
<input id="ctl00_UsecaseContent_ctl01_ctl01_bCVbox" type="checkbox" name="ctl00$UsecaseContent$ctl01$ctl01$bCVbox" checked="checked">
</span>
When you are using e.g. Bootstrap as your UI framework, and on top of that a checkbox specific framework, such as https://github.com/flatlogic/awesome-bootstrap-checkbox, this additional span can actually break the structure of your HTML checkbox control hierarchy.
I have a simple form that uses jQuery validation to notify the user of input errors, etc. When I add an ASP.NET CustomValidator to the form, it causes the page to postback and skip the jQuery validation. I need the form to not be submitted to the server until the client-validation is correct. Has anyone seen this before?
This is my form:
<form id="form1" runat="server">
<core:standardscriptmanager runat="server" />
<div>
<asp:textbox id="Email" name="Email" runat="server" cssclass="_RegisterFormValidate FormField Email {required:true, email:true, messages:{required:'You must enter an email address.', email:'Please enter a valid email address.'}}" maxlength="200" columns="75" width="98%" tooltip="Your email address"></asp:textbox>
<br /><br />
<core:recaptcha runat="server" />
<br />
<asp:linkbutton id="CreateAccount" runat="server" onclick="CreateAccount_Click" text="create"></asp:linkbutton>
</div>
</form>
And this is the core:recaptcha control that contains the custom validator:
<script type="text/javascript"
src="http://www.google.com/recaptcha/api/challenge?k=XXXKEY">
</script>
<noscript>
<iframe src="http://www.google.com/recaptcha/api/noscript?k=XXXKEY"
height="300" width="500" frameborder="0"></iframe><br>
<textarea name="recaptcha_challenge_field" rows="3" cols="40">
</textarea>
<input type="hidden" name="recaptcha_response_field"
value="manual_challenge">
</noscript>
<asp:customvalidator id="RecaptchaValidator" runat="server" controltovalidate="DummyInput" onservervalidate="ServerValidate" validateemptytext="true" />
<asp:textbox id="DummyInput" runat="server" cssclass="Hidden"></asp:textbox>
Note: The DummyInput is only there to make the CustomValidator happy, my ServerValidate event correctly deals with the captcha results.
The ServerValidate portion of the CustomValidator is working fine during the postback, but I need it to stop interfering with the client-side validation. If I remove the CustomValidator from the recaptcha control, everything plays nice.
Do I need to do something like call jquery-validate in the CustomValidator's clientvalidationfunction in order to make this work correctly?
Any thoughts or suggestions would be welcome.
So it turns out the answer to this issue was to set CausesValidation="False" on my linkbutton and then call Page.Validate() in the linkbutton's OnClick handler.
It's not exactly the solution I was looking for since I'll have to remember to do those things every time I want to use recaptcha (or any custom validator for that matter) but this seems to work for now.
You can set the EnableClientScript property of your validator to false:
<asp:CustomValidator id="RecaptchaValidator" runat="server"
ControlToValidate="DummyInput" OnServerValidate="ServerValidate"
ValidateEmptyText="True" EnableClientScript="False" />