MVC :: Don't Understand HtmlAttributes Parameters?
Jan 27, 2010Don't understand htmlAttributes parameters? try this:
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How to correct?
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Don't understand htmlAttributes parameters? try this:
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How to correct?
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Does outputcaching VaryByParams in webforms understand route parameters? Such that if I have a route similar to "Content/{filename}/{more}" that I could do VaryByParams="filename" and have it return cached results based on filename and ignore any values in the more?
View 1 RepliesI am trying to use ActionLink with routeValues & htmlAttributes
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I'm having a problem understanding how to use TextBoxFor with a DateTime field (in particular how to add htmlAttributes). MVC has helpfully scaffolded the following for me:
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I now want to add an htmlAttribute to this, to make the rendered <input> element read-only, for example:
new {@readonly="true"} The problem I have, is that the MSDN documentation for TextBoxFor (see [URL] says only allows two arguments are allowed, the LINQ expression, and a dictionary or object containing the htmlAttributes. So I have two questions:
1. What is the role of "String.Format("{0:g}", Model.LastPolled)" in the scaffolded version? This obviously works, but doesn't seem to be an htmlAttribute.
2. How should I modify the scaffolded version so that the readonly attribute will be used?
I've heard from a couple of different sources that when using HTML helpers in ASP.NET MVC2, one can create custom attributes with dashes in them (e.g. <a data-rowId="5">) by using an underscore in place of the dash, and when the HTML is written to the page the underscores will be replaced by dashes.
So, something like this:
<%= HtmlActionLink(Model.Name, "MyView", null, new {data_rowId = Model.id}) %>
should render as
<a data-rowId="0" href="myURL">Row Name</a>
But... it's not. I think that maybe this feature is only enabled in the MVC3 Beta preview (as it's mentioned in the MVC3 preview release notes), but this thread is about the same thing, and it's regarding MVC2.
I know I can use the other solution presented in that thread, but I'd rather not have to resort to using the dictionary if a more elegant solution exists.
MVC 1.0 source has code like
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Was RouteValueDictionary intended for use with htmlAttributes? Is there an alternative? The only 'feature' RouteValueDictionary looks like its got is it has a constructor which accepts an object.
What should I be using in custom helpers?
Do I have to get some C# class before taking C# programming lessons?
View 7 RepliesWhat is the meaning of this error and how to avoid it:
System.Web.HttpException: Server cannot modify cookies after HTTP headers have been sent.
at System.Web.HttpResponse.BeforeCookieCollectionChange()
at System.Web.HttpCookieCollection.Remove(String name)
at NopSolutions.NopCommerce.Common.NopContext.SetCookie(HttpApplication application, String key, String val) in D:ivolino_3D21012010Nop.CommonNopContext.cs:line 158
at NopSolutions.NopCommerce.Common.NopContext.SessionSaveToClient() in D:ivolino_3D21012010Nop.CommonNopContext.cs:line 127
at NopSolutions.NopCommerce.HttpModules.MembershipHttpModule.Application_EndRequest(Object sender, EventArgs e) in D:WorkOwnNopCommerceSolutionNopCommerceNop.HttpModules.MembershipModuleMembershipHttpModule.cs:line 140
If I have a singleton pattern as follows:
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So Let's say User A is logges in first and does a following call:
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i cannot understand logic of mvc edit.for example
StudentReposirory students= new StudentReposirory();
// GET: /Student/Edit/5
public ActionResult Edit(int id)
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i created an intranet based website(information Portal)...i would like to know the pages each user visits and i want track there behavior...what tools should i include..
View 2 RepliesI am having a problem understanding how polymorphism works when using generics. As an example, I have defined the following program:
public interface IMyInterface
{
void MyMethod();
}.....
So, at least I haven't completely misunderstood that. I am unsure exactly how I am to write a method that accepts a generic collection of classes that conform to the same interface.
I have a plan to completely hack around this problem if need be, but I would really prefer to do it properly.
ow to understand whether the visitor is Googlebot or not ? ASP.net 4.0 & C# I mean i want to understand that if the visitor is Googlebot or not.
View 2 RepliesUntil now, I have not create any massive applications using ASP.Net. However, I am looking to create an application that has the potential to be very performance intensive. So I am looking for some tools or best practices when it comes to performance. I would like to be able to know how to: See my current performance (good or bad) View items that need fixing And being able to compare two performance variable items would be great as well.
View 2 RepliesI have a table with 3 columns Itemid(int),Itemname(string),ItemDesc(string).. Im trying to use a radpanelbar to display this information, where the bar initially shows the item name and on clik/expansion it will show the item description.. I tried looking at the examples on telerik site but didnt understand the point of datafieldid and datafieldparentid. What are they used for and what would their values be for my table.. I tried using different combination of column names for these two ids but I still didnt get it..
View 1 Replies<input type="button" name="reset"
onclick="return ValidateValue(); __doPostBack('ApplyBtn','')" />
The above is the code generated for asp server button button control on browser. Now my query is that irrespective of ValidateValue() returning true/false __doPostBack('ApplyBtn','') function is not showing any effect for me. My understanding is that string passed to onclick acts like function body, and return will from first function will return control preventing second function from execution.
Is that correct?
I understand the concepts of windows workflow...But unable to understand how to implement it...Can anyone tell me some good sites which explains Workflow with coding???
View 1 Repliesin my current project I used a AsyncFileUpload control from AJAX Control Toolkits. After I got the async file upload part working, I needed to filter the file type so users can only upload image files. I found the following code off web and it worked well:
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The problem is : I don't understand this javascript. What is the type of args parameter? Where are the methods such as "get_fileName()", "set_cancel()" defined? I went to the homepage of the
AsyncFileUpload control but couldn't find any documentation regarding the "args".
how do I understand web service software factory with concrete examples? Is it wcf oriented?
View 4 RepliesPlease help to understand this RegEx statement in details. It's supposed to validate filename from ASP.Net FileUpload control to allow only jpeg and gif files. It was designed by somebody else and I do not completely understand it. It works fine in Internet Explorer 7.0 but not in Firefox 3.6.
<asp:RegularExpressionValidator id="FileUpLoadValidator" runat="server"
ErrorMessage="Upload Jpegs and Gifs only."
ValidationExpression="^(([a-zA-Z]:)|(\{2}w+)$?)(\(w[w].*))(.jpg|.JPG|.gif|.GIF)$"
ControlToValidate="LogoFileUpload">
</asp:RegularExpressionValidator>
I have a http module at root level which resolves to the virtual directory which is a .net application on some conditions as below.
I need the have the httpmodule at root level only for some requirements.
application.Context.RewritePath("/virtualdirecotry/root/pages/sample/sample.aspx", String.Empty, "");
the sample.aspx page uses a master page as below
<%@ Page Language="C#" MasterPageFile="~/Root/Pages/Master/Site.Master"
as it uses the relative path the http module is unable to understand the path and throwing following error
The file '/Root/Pages/Master/Site.Master' does not exist.
error occurred during the parsing of a resource required to service this request. review the following specific parse error details and modify your source file appropriately.
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When I want to get the output values its okay but I also want returning a table as a result data.But Datareader has no rows.is it possible if I want a returning query result and multiple output values togather ?I wrote a test above.I can get output values as sqlparameters. But Datareader attached to a Gridview is empty.can you detect whats wrong here and it doesnt return a query result.So stored procedure is not standart or ı am doing something wrong.this doesnt raise any exception.but not returning any data.
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I want to define a route that have 2 optional parameters in the middle of the URL the start an end parameters are digits
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Since ASP.NET MVC3 RC2 I encounter a bug when posting values to a controller method of which one of the parameter is a nullable int. Steps to reproduce:
I've created a test method
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In MVC3 RC1 this was working without any problems with the nullable int
Update:
I don't seem to have the problem with a newly created MVC3 website. What could I have in my project that influence model binding to nullable int's? And why would there be a difference between RC1 and RC2?
I am using jquery ajax method on my aspx page,which will invoke the webmethod in the code behind.Currently the webmethod takes a couple of parameters like firstname,lastname,address etc which I am passing from jquery ajax method using
data:JSON.stringify({fname:firstname,lname:lastname,city:city})
now my requirement has been changed such that,the number and type of parameters that are going to be passed is not fixed for ex.parameter combination can be something like fname,city or fname,city or city,lname or fname,lname,city or something else.So the webmethod should be such that it should accept any number parameters.I thought of using arrays to do so, as described here.
But I do not understand how can I identify which and how many parameters have been passedto the webmethod to insert/update the data to the DB.