The MS KB issue in question is: &lt;http://weblogs.asp.net/scottgu/archive/2011/12/28/asp-net-security-update-shipping-thursday-dec-29th.aspx&gt;

In a nutshell there is now an upper bound on the number of simultaneous HTTP form elements that may be posted. The default is now 1000 without explicitly changing it with this key in the `&lt;appSettings&gt;` portion of the web.config:

    &lt;add key=&quot;aspnet:MaxHttpCollectionKeys&quot; value=&quot;some number greater than 1000&quot; /&gt;



There was a microsoft update and it may have caused your issue see link.
http://knowledgebase.solarwinds.com/kb/questions/3476/Website+Error%3A+The+URL-encoded+form+data+is+not+valid


Consider these two classes:

    public class A
    {
         B b;
         public A(B b) { this.b = b; }
    }
    
    public class B
    {
         A a;
         public B() { this.a =  new A(this); }
    }

If I have classes designed like above, would the objects of such classes be collected by Garbage Collector (GC)?
 
Suppose I do this:

    void f()
    {
         B b = new B();
    }

In this method, I create an instance of `B` called `b`, and when the method returns, `b` goes out of scope, and the GC should be able to collect it, but if it were to collect it, it would have to collect `a` first which is the member of `B`, and to collect `a`, it needs to collect `b` first which is the member of `A`. It becomes circular. So my question is : is such circular reference going to prevent GC from collecting the objects?

 - If yes, then how can we avoid this problem? How can we make sure that we don&#39;t have circular reference in our class design? Is there any tool (or compiler option) that helps us detecting circular reference?
 - If no, where and why do we use [`WeakReference`][1] class? What is its purpose?

[1]:http://msdn.microsoft.com/en-us/library/system.weakreference.aspx


Garbage collector and circular reference

I have a wpf page named `StandardsDefault`. In the code behind,  `StandardsDefault`  is inheriting  `Page`, like all other pages.   

    &lt;Page x:Class=&quot;namespace.StandardsDefault&quot;

    public partial class StandardsDefault : Page

 Now I have created a new class `CountryStandards` which is inheriting `StandardsDefault` instead  of page.

    &lt;Page x:Class=&quot;namespace.CountryStandards&quot;

    public partial class CountryStandards : StandardsDefault

 I have not  changed  the XAML . I am getting the error as 

&gt; &quot;Partial declarations of `&#39;CountryStandards&#39;` must not specify different base classes&quot; 

I think the problem may be that the designer is not inheriting the same class.
But I need to somehow implement inheritance since there are many common methods which are to be used in many standard pages like `CountryStandards` 

Can anyone help me out?

Partial declarations must not specify different base classes

I have a webpage that posts multiple form tags. It&#39;s an inline edit page, where I can either post one row at a time or multiple rows. Last night, without making any changes to the code or data, I started getting `The URL-encoded form data is not valid` error on multiple posts, although single row posts work fine.

URL-encoded form data is not valid

<p>I have a webpage that posts multiple form tags. It's an inline edit page, where I can either post one row at a time or multiple rows. Last night, without making any changes to the code or data, I started getting <code>The URL-encoded form data is not valid</code> error on multiple posts, although single row posts work fine.</p>


I had an aspx page which was working well, but suddenly I am getting the error &lt;samp&gt;&quot;Operation is not valid due to the current state of the object.&quot;&lt;/samp&gt; whenever a postback is done.

The stack trace is:

&gt; at
&gt; System.Web.HttpValueCollection.ThrowIfMaxHttpCollectionKeysExceeded()&lt;br /&gt;
&gt; at System.Web.HttpValueCollection.FillFromEncodedBytes(Byte[] bytes,
&gt; Encoding encoding)&lt;br /&gt; at System.Web.HttpRequest.FillInFormCollection()

 


Can someone help?

&#39;Operation is not valid due to the current state of the object&#39; error during postback

In a .NET MVC 3.0 Application I have the following configuration in `appSettings`:

&lt;h1&gt;web.config&lt;/h1&gt;

    &lt;appSettings&gt;
    &lt;add key=&quot;SMTPHost&quot; value=&quot;mail.domain.com&quot;/&gt;
        &lt;add key=&quot;SMTPUsername&quot; value=&quot;user@gmail.com&quot;/&gt;
        &lt;add key=&quot;SMTPPort&quot; value=&quot;25&quot;/&gt;
        &lt;add key=&quot;SMTPPwd&quot; value=&quot;mypassword&quot;/&gt;
        &lt;add key=&quot;EmailFrom&quot; value=&quot;notific@gmail.com&quot;/&gt;
    &lt;/appSettings&gt;

For debugging, I have the following configuration transform defined:

&lt;h1&gt;web.Debug.config&lt;/h1&gt;

    &lt;appSettings&gt;
        &lt;add  key=&quot;SMTPPort&quot; value=&quot;58&quot; xdt:Transform=&quot;Replace&quot; xdt:Locator=&quot;Match(key)&quot; /&gt;
    &lt;/appSettings&gt;

And I run the application in debug mode, but my SMTP port is still taking the value from the `web.config`, not `web.Debug.config`.

Can anyone suggest what could be wrong in this configuration?

Web Config Transform not working

Imagine a common scenario, this is a simpler version of what I&#39;m coming across.  I actually have a couple of layers of further nesting on mine....

But this is the scenario

Theme contains List&lt;Category&gt;
Category contains List&lt;Product&gt;
Product contains List&lt;Order&gt;

My Controller provides a fully populated Theme, with all the Categories for that theme, the Products within this categories and the their orders.

The orders collection has a property called Quantity (amongst many others) that needs to be editable.

    @model ViewModels.MyViewModels.Theme
    
    @Html.LabelFor(Model.Theme.name)
    @foreach (var category in Model.Theme)
    {
       @Html.LabelFor(category.name)
       @foreach(var product in theme.Products)
       {
          @Html.LabelFor(product.name)
          @foreach(var order in product.Orders)
          {
              @Html.TextBoxFor(order.Quantity)
              @Html.TextAreaFor(order.Note)
              @Html.EditorFor(order.DateRequestedDeliveryFor)
          }
       }
    }

If I use lambda instead then then I only seem to get a reference to the top Model object, &quot;Theme&quot; not those within the foreach loop.


Is what I&#39;m trying to do there even possible or have I overestimated or misunderstood what is possible?

With the above I get an error on the TextboxFor, EditorFor, etc

&gt; CS0411: The type arguments for method
&gt; &#39;System.Web.Mvc.Html.InputExtensions.TextBoxFor&lt;TModel,TProperty&gt;(System.Web.Mvc.HtmlHelper&lt;TModel&gt;,
&gt; System.Linq.Expressions.Expression&lt;System.Func&lt;TModel,TProperty&gt;&gt;)&#39;
&gt; cannot be inferred from the usage. Try specifying the type arguments
&gt; explicitly.

Thanks.

MVC Razor view nested foreach&#39;s model

I am holding some information in static variables defined in page class (not in Global.asax). I only declare variable in code like:

    protected static int SomeGlobalUnsecureID;
    protected static string SomeGlobalUnsecureString;

and define the variable in PageLoad event. For example, I check ID from the database, if it&#39;s different from SomeGlobalUnsecureID, I update SomeGlobalUnsecureID and String from somewhere else, otherwise leave them as is. This is perfectly safe in my app. logic (i.e. those data are not secure, everybody can access them, no problem); only thing I want to accomplish is 

 1. Hold the same amount of memory regardless of users connected
    
 2.   Change if and only if persistent info is different from the one in
    &#39;memory&#39; (because actually reading the string is time consuming for
    me.

Now, since I make the check in PageLoad, I have no problems in reloaded pages. However my page is full of WebMethods, and sometimes I see that the static variables are zeroed. And the strange part is; the session is still active even when the static variables are zeroed (so-&gt; no server or app. pool restart etc.)

This is really strange for me. I assume that static variable will hold its value until the application (somehow) ends. But even the Session did not expire, the static variable is zeroed. What do you suggest? Is using application variables a better choice? All documents I&#39;ve read on web suggest static variables instead of application variables, do I need to declare them somehow different?




Lifetime of ASP.NET Static Variable

I have a C# ASP.NET application which starts about 25 different threads running some methods in a class called SiteCrawler.cs. 

In `HttpContext.Current.Session` I want to save the result of the search made by the user and present it to the user when all the threads are finished running. My problem is that the `HttpContext.Current` object is null in the spawned threads because it doesn&#39;t exist there. 

What other options do I have to save user/session specific data without using session because of the limitations when the application is multithreaded?

I have tried to search around every inch of Stackoverflow to find a solution but without any luck....

Access HttpContext.Current from different threads

I have a zip file on a server.

How can I check if the file size is larger than 27 MB?

    File file = new File(&quot;U:\intranet_root\intranet\R1112B2.zip&quot;);
    if (file &gt; 27) {
       //do something
    }

 

How to get the size of a file in MB (Megabytes)?

I just learned from a colleague that omitting the &quot;http | https&quot; part of a URL in a link will make that URL use whatever scheme the page it&#39;s on uses.

So for example, if my page is accessed at http://www.example.com and I have a link (notice the &#39;//&#39; at the front):

    &lt;a href=&quot;//www.google.com&quot;&gt;Google&lt;/a&gt;

That link will go to http://www.google.com.  

But if I access the page at https://www.example.com with the same link, it will go to https://www.google.com

I wanted to look online for more information about this, but I&#39;m having trouble thinking of a good search phrase.  If I search for &quot;URLs without HTTP&quot; the pages returned are about urls with this form: &quot;www.example.com&quot;, which is not what I&#39;m looking for. 

Would you call that a schemeless URL?  A protocol-less URL?  

Does this work in all browsers?  I tested it in FF and IE 8 and it worked in both.  Is this part of a standard, or should I test more browsers?



URL without &quot;http|https&quot;

I&#39;m looking to replace all instances of spaces in urls with %20. How would I do that with regex?

Thank you!

Using PHP Replace SPACES in URLS with %20

I want to make a link for a textview text like [Google][1]. Is there anyway to make link like this. (i.e) When clicking on the word Google it should open the appropriate link. Any ideas are welcome.


  [1]: http://www.google.com

Make a hyperlink textview in android

If I have a variable to pass through a URL and it has a question mark in it, do I just need to escape the question mark?

If not, how can I make sure it passes through like it&#39;s supposed to?





Question mark in the middle of a URL variable

How can I add UTF-8 support in eclipse? I want to add for example Russian language but eclipse won&#39;t support it. What should I do? Please guide me.

How to support UTF-8 encoding in Eclipse

I need an efficient (read native) way to convert an `ArrayBuffer` to a base64 string which needs to be used on a multipart post. 

ArrayBuffer to base64 encoded string

I searched Java&#39;s internal representation for String, but I&#39;ve got two materials which look reliable but inconsistent.

One is:

&gt; http://www.codeguru.com/cpp/misc/misc/multi-lingualsupport/article.php/c10451

and it says:

&gt; Java uses UTF-16 for the internal text representation and supports a non-standard modification of UTF-8 for string serialization.

The other is:

&gt; http://en.wikipedia.org/wiki/UTF-8#Modified_UTF-8

and it says:

&gt; Tcl also uses the same modified UTF-8[25] as Java for internal representation of Unicode data, but uses strict CESU-8 for external data.

Modified UTF-8? Or UTF-16? Which one is correct? And how many bytes does Java use for a char in memory?

Please let me know which one is correct and how many bytes it uses.

What is the Java&#39;s internal represention for String? Modified UTF-8? UTF-16?

I have a problem with encoding of the *path* variable and inserting it to the *SQLite* database. I tried to solve it with *encode(&quot;utf-8&quot;)* function which didn&#39;t help. Then I used *unicode()* function which gives me type *unicode*.

    print type(path)                  # &lt;type &#39;unicode&#39;&gt;
    path = path.replace(&quot;one&quot;, &quot;two&quot;) # &lt;type &#39;str&#39;&gt;
    path = path.encode(&quot;utf-8&quot;)       # &lt;type &#39;str&#39;&gt; strange
    path = unicode(path)              # &lt;type &#39;unicode&#39;&gt;

Finally I gained *unicode* type, but I still have the same error which was present when the type of the *path* variable was *str*

&gt; sqlite3.ProgrammingError: You must not use 8-bit bytestrings unless
&gt; you use a text_factory that can interpret 8-bit bytestrings (like
&gt; text_factory = str). It is highly recommended that you instead just
&gt; switch your application to Unicode strings.

Could you help me solve this error and explain the correct usage of `encode(&quot;utf-8&quot;)` and `unicode()` functions? I&#39;m often fighting with it.

EDIT:

This *execute()* statement raised the error:

    cur.execute(&quot;update docs set path = :fullFilePath where path = :path&quot;, locals())
I forgot to change the encoding of *fullFilePath* variable which suffers with the same problem, but I&#39;m quite confused now. Should I use only *unicode()* or *encode(&quot;utf-8&quot;)* or both?

I can&#39;t use

    fullFilePath = unicode(fullFilePath.encode(&quot;utf-8&quot;))
because it raises this error:

&gt; UnicodeDecodeError: &#39;ascii&#39; codec can&#39;t decode byte 0xc5 in position
&gt; 32: ordinal not in range(128)

*Python* version is *2.7.2*




Usage of unicode() and encode() functions in Python

Why do we have Base64 encoding? I am a beginner and I really don&#39;t understand why would you obfuscate the bytes into something else (unless it is encryption). In one of the books I read Base64 encoding is useful when binary transmission is not possible. Eg. When we post a form it is encoded. But why do we convert bytes into letters? Couldn&#39;t we just convert bytes into string format with a space in between? For example, `00000001 00000004`? Or simply `0000000100000004` without any space because bytes always come in pair of 8?

Content Type	Original Author	Original Content on Stackoverflow
Question	Paul Kogan	View Question on Stackoverflow
Solution 1 - asp.net	Greg Lary	View Answer on Stackoverflow
Solution 2 - asp.net	1234	View Answer on Stackoverflow

URL-encoded form data is not valid

asp.net Problem Overview

asp.net Solutions

Solution 1 - asp.net

Solution 2 - asp.net

Partial declarations must not specify different base classes

Garbage collector and circular reference

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