You need to use the Document Outline


    View &gt; Other Windows &gt; Document Outline

Or via hotkey

    Ctl + ALT + T



Click on **View &gt; Other Windows &gt; Document Outline** in Visual Studio.

That should show the control hierarchy.

Visual Style Builder for UI Customization - Download this tool and use it...

Another tool is present which is &quot;Control Spy Tool for Easier Development&quot;

You will find the solution easily..

I know that `cons` returns a seq and `conj` returns a collection.  I also know that `conj` &quot;adds&quot; the item to the optimal end of the collection, and `cons` always &quot;adds&quot; the item to the front.  This example illustrates both of these points:

    user=&gt; (conj [1 2 3] 4) ; returns a collection
    [1 2 3 4]
    user=&gt; (cons 4 [1 2 3]) ; returns a seq
    (4 1 2 3)

For vectors, maps, and sets these differences make sense to me.  However, for lists they seem identical.

    user=&gt; (conj (list 3 2 1) 4) ; returns a list
    (4 3 2 1)
    user=&gt; (cons 4 (list 3 2 1)) ; returns a seq
    (4 3 2 1)

Are there any examples using lists where `conj` vs. `cons` exhibit different behaviors, or are they truly interchangeable?  Phrased differently, is there an example where a list and a seq cannot be used equivalently?



Clojure: cons (seq) vs. conj (list)

I am using a `SslServerSocket` and client certificates and want to extract the CN from the SubjectDN from the client&#39;s `X509Certificate`.

At the moment I call `cert.getSubjectX500Principal().getName()` but this of course gives me the total formatted DN of the client. For some reason I am just interested in the `CN=theclient` part of the DN. Is there a way to extract this part of the DN without parsing the String myself?

How to extract CN from X509Certificate in Java?

One of our clients has an old WinForms application that contains forms with a lot of controls on them. Some of those controls have a deep hierarchy and that makes it to hard to select them in the designer.

I need to understand this hierarchy to make modifications to the application to correct some bugs. Is there a way to see this hierarchy clearly? For example, is there something available that is similar to what can be seen in an .aspx source file when you have a breadcrumb of where you are in the HTML hierarchy (HTML &gt; Body &gt; div &gt; etc.)? Or something more visual maybe?



Show control hierarchy in the WinForms designer

<p>One of our clients has an old WinForms application that contains forms with a lot of controls on them. Some of those controls have a deep hierarchy and that makes it to hard to select them in the designer.</p>
<p>I need to understand this hierarchy to make modifications to the application to correct some bugs. Is there a way to see this hierarchy clearly? For example, is there something available that is similar to what can be seen in an .aspx source file when you have a breadcrumb of where you are in the HTML hierarchy (HTML > Body > div > etc.)? Or something more visual maybe?</p>


I recently learned how to rotate a BitmapImage using the &#39;TransformedBitmap&#39; and &#39;RotateTransformed&#39; classes. Now I am able to perform clockwise rotations on my images. But how do I FLIP an image? I can&#39;t find the class(es) to perform horizontal and vertical flips of a BitmapImage. Please help me figure out how to do it. For instance, if my image was a drawing that looked like a &#39;d&#39;, then a vertical flip would result in something like a &#39;q&#39;, and a horizontal flip would result in something like a &#39;b&#39;.

how to flip Image in wpf

How do I check if a file is empty in C#?

I need something like:

    if (file is empty)
    {
        // do stuff
    }
    
    else
    {
        // do other stuff
    }

Is file empty check

While trying to learn [Unity][1], I keep seeing the following code for overriding `GetControllerInstance` in MVC:

    if(!typeof(IController).IsAssignableFrom(controllerType)) { ... }

this seems to me a pretty convoluted way of basically writing

    if(controllerType is IController) { ... }

I appreciate there are subtle differences between `is` and `IsAssignableFrom`, ie `IsAssignableFrom` doesn&#39;t include cast conversions, but I&#39;m struggling to understand the implication of this difference in practical scenarios.

When is it imporantant to choose `IsAssignableFrom` over `is`? What difference would it make in the `GetControllerExample`?

    if (!typeof(IController).IsAssignableFrom(controllerType))
          throw new ArgumentException(...);
    return _container.Resolve(controllerType) as IController;
                


  [1]: http://weblogs.asp.net/shijuvarghese/archive/2010/05/07/dependency-injection-in-asp-net-mvc-nerddinner-app-using-unity-2-0.aspx

Use of IsAssignableFrom and &quot;is&quot; keyword in C#

I simply have a string that looks something like this:

&quot;7,true,NA,false:67,false,NA,false:5,false,NA,false:5,false,NA,false&quot;

All I want to do is to count how many times the string &quot;**true**&quot; appears in that string. I&#39;m feeling like the answer is something like `String.CountAllTheTimesThisStringAppearsInThatString()` but for some reason I just can&#39;t figure it out. Help?

Count the number of times a string appears within a string

With the addition of the [Tuple][1] class in .net 4, I have been trying to decide if using them in my design is a bad choice or not.  The way I see it, a [Tuple][1] can be a shortcut to writing a result class (I am sure there are other uses too).  

So this:

    public class ResultType
    {
        public string StringValue { get; set; }
        public int IntValue { get; set; }
    }

    public ResultType GetAClassedValue()
    {
        //..Do Some Stuff
        ResultType result = new ResultType { StringValue = &quot;A String&quot;, IntValue = 2 };
        return result;
    }
    
Is equivalent to this:

    public Tuple&lt;string, int&gt; GetATupledValue()
    {
        //...Do Some stuff
        Tuple&lt;string, int&gt; result = new Tuple&lt;string, int&gt;(&quot;A String&quot;, 2);
        return result;
    }

So setting aside the possibility that I am missing the point of Tuples, is the example with a [Tuple][1] a bad design choice?  To me it seems like less clutter, but not as self documenting and clean.  Meaning that with the type `ResultType`, it is very clear later on what each part of the class means but you have extra code to maintain.  With the `Tuple&lt;string, int&gt;` you will need to look up and figure out what each `Item` represents, but you write and maintain less code.

Any experience you have had with this choice would be greatly appreciated.

  [1]: http://msdn.microsoft.com/en-us/library/system.tuple.aspx



Is Using .NET 4.0 Tuples in my C# Code a Poor Design Decision?

WinForms have those three boxes in the upper right hand corner that minimize, maximize, and close the form.  What I want to be able to do is to remove the minimize and maximize, while keeping the close.  

I also what to make the close minimize the form instead of closing it. 

How can this be done?

Disabling Minimize &amp; Maximize On WinForm?

I want to make simple Yes/No choiced MessageBox, but I think it is nonsense to design a form for that. I thought I could use MessageBox, add buttons, etc. to accomplish this. It is simple, but since there is no DialogResult returned, how do I retrieve the result?


How do I create a message box with &quot;Yes&quot;, &quot;No&quot; choices and a DialogResult?

In C# WinApp, how can I add both Text and Value to the items of my ComboBox?
I did a search and usually the answers are using &quot;Binding to a source&quot;.. but in my case I do not have a binding source ready in my program...
How can I do something like this:

    combo1.Item[1] = &quot;DisplayText&quot;;
    combo1.Item[1].Value = &quot;useful Value&quot;



ComboBox: Adding Text and Value to an Item (no Binding Source)

Is it possible to close a form while the constructor is executing (or simply to stop it showing at this stage)?

I have the following code:

    public partial class MyForm : Form
    {        
       	public MyForm()
       	{
       	    if (MyFunc())
            {
                this.Close();
            }
       	}
    }

Which throws an ObjectDisposedException in Main(), here:

        static void Main()
        {            
            ...

            // Following line errors
            Application.Run(new MyForm());
        }

I’ve tried checking the result of MyForm like this:

    static void Main()
    {            
        ...

        MyForm frm = new MyForm();
        if (frm != null)
        {
            // Following line errors
            Application.Run(frm);
        }
    }

But that doesn’t seem to help.  Can anyone tell me a way around this, please?  Maybe a way to check the form to see if it still exists?




Closing a form during a constructor

What is the difference between form [Form.Load][1], [Form.Shown][2] and [Form.Activated][3] events? What is the order in which they are fired?

  [1]: http://msdn.microsoft.com/en-us/library/system.windows.forms.form.load.aspx
  [2]: http://msdn.microsoft.com/en-us/library/system.windows.forms.form.shown.aspx
  [3]: http://msdn.microsoft.com/en-us/library/system.windows.forms.form.activated.aspx


Order of events &#39;Form.Load&#39;, &#39;Form.Shown&#39; and &#39;Form.Activated&#39; in Windows Forms

This is driving me crazy.  

I have a rather large project that I am trying to modify.  I noticed earlier that when I typed `DbCommand`, visual studio did not do any syntax highlighting on it, and I am using using `System.Data.Common`.

Even though nothing was highlighted, the project seemed to be running fine in my browser. So I decided to run the debugger to see if things were really working as they should be.

Every time the class that didn&#39;t do the highlighting is called I get the `&quot;the source file is different from when the module was built&quot;` message. 

I cleaned the solution and rebuilt it several times, deleted tmp files, followed all the directions here https://stackoverflow.com/questions/353421/getting-the-source-file-is-different-from-when-the-module-was-built, restarted the web server and still it tells me the source files are different when they clearly are not. 

I cannot test any of the code I have written today because of this.  

 - How can the source be different than the binary when I just complied
   it?   
 - Is there any way to knock some sense into visual studio, or am
   I just missing something?

the source file is different from when the module was built

In VS2008, is there a way to return to the cursor’s previous position after pressing F12 to jump to a function definition?  I know this is possible with some add-ons, but if there a way to get the core product to do this?



Visual Studio IDE - return to previous

In my ASP.NET application, I was trying to add few white spaces between two text boxes by typing space bar. The equivalent HTML source was `&amp;#160;` instead of `&amp;nbsp;`. So I just wanted to check: is this the new replacement for white space? If yes, any idea why they changed?


Is &quot;&amp;#160;&quot; a replacement of &quot;&amp;nbsp;&quot;?

I&#39;m using Visual Studio 2008 and I have just noticed that the debugger is displaying integer values as Hex when I hover over variables and also in the immediate window.  I guess I must have hit a shortcut key accidently or something.

Anyone had this before?  How do I set it back to display in decimal?

Visual Studio debugger - Displaying integer values in Hex

How do I change the folder of my existing solution file (sln)?

It&#39;s right now inside one of my project&#39;s folder; if I cut the solution file and paste it in the root folder,it doesn&#39;t load any of my projects.

change solution file to a different folder

I have two DLL files that have the same namespace but they have different methods and types.
How can I reference both DLLs in my project and use their methods and types?

By the way, these two DLLs have some methods and types with the same name but different implementation and some unique methods and types.

two different DLL with same namespace

I have form which is opened using ShowDialog Method. In this form i have a Button called More.
If we click on More it should open another form and it should close the current form.

on More Button&#39;s Click event Handler i have written the following code

  

    MoreActions objUI = new MoreActions (); 
    objUI.ShowDialog();
    this.Close();

But what is happening is, it&#39;s not closing the first form. So, i modified this code to 

  

    MoreActions objUI = new MoreActions (); 
    objUI.Show();
    this.Close();

Here, The second form is getting displayed and within seconds both the forms getting closed.

Can anybody please help me to fix issue.  What i need to do is, If we click on More Button, it should open another form and close the first form.

Any kind of help will be really helpful to me.

How to open a new form from another form

I have added a custom section called `secureAppSettings` to my web.config file:
```xml
&lt;configuration&gt;
  &lt;configSections&gt;
    &lt;section name=&quot;secureAppSettings&quot; type=&quot;System.Configuration.NameValueSectionHandler, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089&quot; /&gt;
  &lt;/configSections&gt;
  &lt;secureAppSettings&gt;
    &lt;add key=&quot;userName&quot; value=&quot;username&quot;/&gt;
    &lt;add key=&quot;userPassword&quot; value=&quot;password&quot;/&gt;
  &lt;/secureAppSettings&gt;  
&lt;/configuration&gt;
```
`secureAppSettings` is decrypted and has two keys inside it.

Now in my code, I tried to access the keys like this:

    string userName = System.Configuration.ConfigurationManager.secureAppSettings[&quot;userName&quot;];
    string userPassword = System.Configuration.ConfigurationManager.secureAppSettings[&quot;userPassword&quot;];

But `null` is returning for these fields.

How can I get the field values?



How to read values from custom section in web.config

I am newbie in .net. I am doing compression and decompression string in C#. There is a XML and I am converting in string and after that I am doing compression and decompression.There is no compilation error in my code except when I decompression my code and return my string, its returning only half of the XML.

Below is my code, please correct me where I am wrong.

Code:

    class Program
    {
        public static string Zip(string value)
        {
            //Transform string into byte[]  
            byte[] byteArray = new byte[value.Length];
            int indexBA = 0;
            foreach (char item in value.ToCharArray())
            {
                byteArray[indexBA++] = (byte)item;
            }

            //Prepare for compress
            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            System.IO.Compression.GZipStream sw = new System.IO.Compression.GZipStream(ms, System.IO.Compression.CompressionMode.Compress);

            //Compress
            sw.Write(byteArray, 0, byteArray.Length);
            //Close, DO NOT FLUSH cause bytes will go missing...
            sw.Close();

            //Transform byte[] zip data to string
            byteArray = ms.ToArray();
            System.Text.StringBuilder sB = new System.Text.StringBuilder(byteArray.Length);
            foreach (byte item in byteArray)
            {
                sB.Append((char)item);
            }
            ms.Close();
            sw.Dispose();
            ms.Dispose();
            return sB.ToString();
        }
    
        public static string UnZip(string value)
        {
            //Transform string into byte[]
            byte[] byteArray = new byte[value.Length];
            int indexBA = 0;
            foreach (char item in value.ToCharArray())
            {
                byteArray[indexBA++] = (byte)item;
            }

            //Prepare for decompress
            System.IO.MemoryStream ms = new System.IO.MemoryStream(byteArray);
            System.IO.Compression.GZipStream sr = new System.IO.Compression.GZipStream(ms,
                System.IO.Compression.CompressionMode.Decompress);

            //Reset variable to collect uncompressed result
            byteArray = new byte[byteArray.Length];

            //Decompress
            int rByte = sr.Read(byteArray, 0, byteArray.Length);

            //Transform byte[] unzip data to string
            System.Text.StringBuilder sB = new System.Text.StringBuilder(rByte);
            //Read the number of bytes GZipStream red and do not a for each bytes in
            //resultByteArray;
            for (int i = 0; i &lt; rByte; i++)
            {
                sB.Append((char)byteArray[i]);
            }
            sr.Close();
            ms.Close();
            sr.Dispose();
            ms.Dispose();
            return sB.ToString();
        }
        
        static void Main(string[] args)
        {
            XDocument doc = XDocument.Load(@&quot;D:\RSP.xml&quot;);
            string val = doc.ToString(SaveOptions.DisableFormatting);
            val = Zip(val);
            val = UnZip(val);
        }
    } 

My XML size is 63KB.

Compression/Decompression string with C#

When I hit F5 (debugging mode) nothing happens. Building works correctly, exe file I can launch properly, but can&#39;t start debug. Why?

Debugging doesn&#39;t start

Is there any way to force the WPF designer to reload or refresh, without rebuilding the entire project or solution?

If there&#39;s an error, I get an option in the designer view to refresh the designer. But if I don&#39;t have an error, how can I get the designer to refresh after I&#39;ve made a change?


How to manually reload the Visual Studio designer for WPF

I just try to view the result after XAML code in Designer. However, it&#39;s hard to recognize the black letters when I use a dark theme in vs2012.

My question is how to change designer background to white color without modifying the dark theme.
Seems to change several options in tools?

Thanks

----
**Please skim over all the answers**. All have different approaches and it may be that the later ones will suit your needs better.

Content Type	Original Author	Original Content on Stackoverflow
Question	Cédric V	View Question on Stackoverflow
Solution 1 - C#	codingbadger	View Answer on Stackoverflow
Solution 2 - C#	anonymous	View Answer on Stackoverflow
Solution 3 - C#	John	View Answer on Stackoverflow

Show control hierarchy in the WinForms designer

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

How to extract CN from X509Certificate in Java?

Clojure: cons (seq) vs. conj (list)

Attributions