There are 3 checkboxfor html helper controls, on making Ist one checked , 2nd sholuld look disabled, 3rd remain enabled and is optional to check.I am not getting to know how to disable 2nd one on getting ist one checked.
View 6 RepliesI love MVC, coming from WebForms development, but there are things that don't make any sense to me. The "Error executing child handler" occurs anytime a vast number of things happen, for instance. It's very close to a useless message. In order to get the actual cause, I click on Debug/Exceptions and check the "Common Language Runtime Exceptions", and then reload the View. Presto! It shows the cause of the error.
Another thing I'm wondering about today is the FormCollection value of the Html.CheckBoxFor control. Checkboxes in general seem badly designed in html, and MVC didn't improve on it much. When processing a POST, if a regular checkbox isn't checked, it simply won't show up in the list of posted elements. Great. Instead of just grabbing it by name in the FormCollection and testing its value, instead I have to test whether or not it exists in the FormCollection. Not very intuitive. The Html.CheckBoxFor is a variant on the same theme. It always shows up in the FormCollection, but with a similarly non-intuitive return. If it's not checked, it yields a value of 'false', which can simply be converted to boolean and processed as normal. But if it is checked, it returns 'true,false'. Super. Now, instead of converting its value to a boolean directly, I have to test the string returned for the index of 'true' and return that instead.
I find this close to as aggravating as the Linq To Sql Sum() method bug. If I run a Select() method on a given numeric property and run Sum() to add them all together, if an empty result set is returned by the query it throws an exception. Now, if I was looking at a bunch of totals to add together, and none of them had anything entered, what would I write in the sum box? Error? Exception? Nope, it would be zero. I fully understand that if no results were returned then nulls cannot be added, but according to the intitial documentation this method was supposed to return zero in such an instance regardless, because that's just common sense. Enough of that rant. Does anyone know why this return value was chosen for Html.CheckBoxFor?
i'm tryig to make checkbox control as mandatory on submit button click and i'm using the following peice of code to bind the checkbox control in view from model.
<tr>
<td><label>Confirm values are correct</label></td>
<td><%= Html.CheckBoxFor(model => model.ConfirmRefund, new { @class = "checkbox"})%>
<%: Html.ValidationMessageFor(model => model.ConfirmRefund,"*")%>
</td>
</tr>
I have this C# code in a Razor view:
@(Html.CheckBoxFor<RazorSamplesWeb.Models.SamplesModel>(i => i.IsActive))
I tried translating it to this:
@Code Html.CheckBoxFor(Of RazorSamplesWeb.Models.SamplesModel)(Function(i) i.IsActive)End Code
But it's complaining. Why, and what is the right statement?
In my ASP.NET MVC app I am rendering out a checkbox using the following code:
<%= Html.CheckBoxFor(i=>i.ReceiveRSVPNotifications) %>
Now I see that this renders both the checkbox input tag and a hidden input tag. The problem that I am having is when I try retrieve the value from the checkbox using the FormCollection:
FormValues["ReceiveRSVPNotifications"]
I get the value "true,false". When looking at the rendered out HTML I can see the following:
<input id="ReceiveRSVPNotifications" name="ReceiveRSVPNotifications" value="true" type="checkbox">
<input name="ReceiveRSVPNotifications" value="false" type="hidden">
So the FormValues collection seems to join these two values since they have the same name.
I have:[Code]....
how can I have checkbox default checked ?
Can I integrate Html.CheckBoxFor and Html.LabelFor to create the following:
[Code]....
What type of variable should I pass in the model to hold the choises?
I have a situation where I need to dynamically disable certain controls. I will not be knowing the type of control. I tried to use FindControl(""), but this does not have the "Enabled" property, it only has "Visible" property.
Kindly let me know how this can be done.
I have a repeater with a checkbox and a textbox, that I am binding to a datasource. Depending on conditions from the code behind, I want to be able to disable the checkbox and textbox dynamically.
Currently this is what I have within the
[Code]...
The #DataBinder.Eval(Container.DataItem, "DISABLE") is being set to the string value of "true" on the code behind yet when the code is ran, I recieve a InvalidCastException error.
Regarding the AsyncFileUpload control in .net, the control will execute the file upload once i select a file. In my concern is, is it possible to disable the upload once i select a file so that i could process the upload asynchronously with a submit button
View 2 RepliesNot getting value of radio button which i disable using JQuery before page submit.
View 1 Replies<asp:TextBox ID="TextBox1" runat="server" EnableViewState="false" />
<asp:Button ID="Button1" runat="server" Text="Button" />
I have set the EnableViewState property to false, but when I click on the button the value in the textbox persists after the postback. Why does the value persist?
I know this is a very debated topic, and usually when you are thinking about this as a solution you might want to rethink your UI logic.
I know I can pass validation using ClientScriptManager.RegisterForEventValidation. But, I'd really like to know. Is it possible to remove event validation for a single control? Is there a way work around for this?
I'm modifying a DropDownList, from the client side after it's rendered.
Iam trying to use System.Web.UI.WebControls.Calender. But when I select any date , It post backs automatically. Is there any way to avoid this behavior. (I dont see the usual property AutoPostback which I set to False to avoid this behavior) I need the selected date only once user submits the form. Note- I am using VS2008
View 2 RepliesHow to disable Sunday in asp.net calendar control? I am using C#.
View 1 RepliesHow to disable tab or visibility control if some condition is not satisfy.
I want it that control in .asmx page, because I have some Cascaded combo under two tab.
If the first combo is not populate in any of tab then that tab will not visible or disable to user.
As I am populating the cascaded combo box using web methods so it is easy for me to declare that fuction there.
how I can find and set enabled = false to a control I have created dynamically previously?
View 3 RepliesHow to disable particular cell or control in DataGrid?
View 1 RepliesI have a text box, a range validator, and a button. The validator is hooked up and prevents the button from doing a post back if the text is out of the range, however I'd also like to enable and disable the button. Is this possible to do within client-side code?
View 12 RepliesI am attempting to dynamically add a element to the html head tag in ASP.Net.
Here is my code in the master page:
[code]....
How do I disable the Url Encoding? Or is this valid? I'm trying to do this for SEO purposes.
I have a simple problem: I have a bunch of controls on a page and each one requires a validation. Also, I set control's enable=true/false programmaticaly, based on a checkbox . Now, I would like to disable the validation of a control if it is not enabled.
View 4 RepliesI'm using Visual Studio 2010 and ASP.NET 4.0 to render a Menu control as an HTML list so I can style it using CSS. Here is the code I am using below
<asp:Menu ID="navlist" runat="server" Orientation="Horizontal"
SkipLinkText="" ClientIDMode="Static" DataSourceID="MenuSource"
MaximumDynamicDisplayLevels="0" IncludeStyleBlock="False"
StaticDisplayLevels="2">
</asp:Menu>
This produces the following HTML
[Code]....
At first glance this looks like exactly what I wanted. However, if I open up WebResource.axd there is a whole bunch of javascript code related to the menu. Part of this code is applying it's own inline styles to the list. Using FireBug I can view the HTML markup after the javascript has executed and it looks something like this:
[code]....
These inline styles ultimately affect the layout of my page. I have no need for any of the scripts in WebResource.axd. How can I prevent this script from being rendered in the final markup of the page?
In my website I'm using the standard ASP.NET menu control. I already got so far as to write a custom control adapter to get rid of the rather tacky html output that is generated by the default control adapter.
One thing keeps buggering me though. Somehow ASP.NET is generating extra javascript that I don't want nor need for my menu controls, since I won't be using any of the dynamic features in the control. I replaced the control adapter, so it doesn't generate compatible HTML for that.
how I can prevent ASP.NET from generating the extra javascript for the menu control?
How to disable the dates on the Calendarextender control ie: and only highlight the specific dates ( the date is coming from DB dynamically )
so if i have the dates like 5 , 8 , 24 , 28 Jan 2011 - i have to highlight these dates with background somecolor and change some text color, and disable other dates.
Is it possible to do this using CalendarExtender control I google but i didnt get any way of doing the above task, If not so which calendar control wil fulfil my requirement. and also i have to show the calendar similar to the calendarextender.
have an datatable with valuees like this
ListItem ddlItem;
foreach (DataRow dr in dt.Rows)
{
ddlItem = new ListItem(dr["names"].ToString())
lbx.Items.Add(ddlItem);