You&#39;ve probably miss-typed something above that bit of code or created your own class called IPAddress. If you&#39;re using the .net one, that function should be available.

Have you tried using System.Net.IPAddress just in case?

    System.Net.IPAddress ipaddress = System.Net.IPAddress.Parse(&quot;127.0.0.1&quot;);  //127.0.0.1 as an example

[The docs on Microsoft&#39;s site](https://msdn.microsoft.com/en-us/library/1b2h863h(v=vs.110).aspx) have a complete example which works fine on my machine.

i have a wpf window where i have a stackpanel with two viewports in it - each Viewport with a textblock in it.

    &lt;Grid&gt;
        &lt;StackPanel VerticalAlignment=&quot;Center&quot; Orientation=&quot;Vertical&quot; &gt;
            &lt;Viewbox Margin=&quot;100,0,100,0&quot;&gt;
                &lt;TextBlock x:Name=&quot;headerText&quot; Text=&quot;Lorem ipsum dolor&quot; Foreground=&quot;Black&quot;/&gt;
            &lt;/Viewbox&gt;
            &lt;Viewbox Margin=&quot;150,0,150,0&quot;&gt;
                &lt;TextBlock x:Name=&quot;subHeaderText&quot; Text=&quot;Lorem ipsum dolor, Lorem ipsum dolor, lorem isum dolor, Lorem ipsum dolor, Lorem ipsum dolor, lorem isum dolor, &quot; TextWrapping=&quot;Wrap&quot; Foreground=&quot;Gray&quot; /&gt;
            &lt;/Viewbox&gt;
        &lt;/StackPanel&gt;
    &lt;/Grid&gt;

What i would like to achieve is that the top textblock is the heading with a bigger text. The second textblock is the sub heading with a smaller text. No matter how much text there is for either the heading or the subheading the font should dynamic become smaller/bigger. My problem is that i would like the subheading to be fixed width. This means that, the font should be a percentage  (70%) of the heading and wrap to multiple lines, depending on how much text i have. I enclosed the code I have thus far... im missing something with that subheading, cant figure out what. Cheers

**Edit**
Basically what i want achieve is that the sub header wraps the text so it can expand it downwards with the font being a 70% of the heading - no matter how big that font is.

How do I make a WPF TextBlock show my text on multiple lines?

I am using the following code, MAX is 2 pages. By default the position is 0 and adds a new page to the right. I inflate two layout files.

How can I show the page1 when the app starts and add a new page to the left ?
Thanks.


**main.xml**

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;LinearLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    	android:orientation=&quot;vertical&quot; android:layout_width=&quot;fill_parent&quot;
    	android:layout_height=&quot;fill_parent&quot;&gt;
    
    	
    	&lt;android.support.v4.view.ViewPager
    		android:layout_width=&quot;wrap_content&quot; android:layout_height=&quot;wrap_content&quot;
    		android:id=&quot;@+id/pagerView&quot; /&gt;
    
    
    &lt;/LinearLayout&gt;


**Java code**

    public class MyPagerActivity extends Activity {
    	private Context context;	
    	private int pageNumber;
    
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.main);
    		context = this;
    
    		ViewPager pagerView = (ViewPager)findViewById(R.id.pagerView);
	        pagerView.setAdapter(new AwesomePagerAdapter());	
    		
    	}
    
    
    	private class AwesomePagerAdapter extends PagerAdapter{
    
    		@Override
    		public void destroyItem(View collection, int position, Object view) {
    			((ViewPager) collection).removeView((View)view);			
    		}
    
    		@Override
    		public void finishUpdate(View arg0) {
    			//setPageTitles(getPageNumber());
    		}
    
    		@Override
    		public int getCount() {
    			return 2;
    		}
    
    		@Override
    		public Object instantiateItem(View collection, int position) {
    			/*	TextView tv = new TextView(MyPagerActivity.this);
    		tv.setText(&quot;Bonjour PAUG &quot; + position);
    		tv.setTextColor(Color.WHITE);
    		tv.setTextSize(30);
    
    		((ViewPager) collection).addView(tv,0);
    
    		return tv;*/
    
    			View view = getViewToShow(position);
    			((ViewPager) collection).addView(view,0);
    			return view;
    		}
    
    		@Override
    		public boolean isViewFromObject(View view, Object object) {
    			return view==((View)object);
    		}
    
    		@Override
    		public void restoreState(Parcelable arg0, ClassLoader arg1) {
    			// TODO Auto-generated method stub
    
    		}
    
    		@Override
    		public Parcelable saveState() {
    			// TODO Auto-generated method stub
    			return null;
    		}
    
    		@Override
    		public void startUpdate(View arg0) {
    			// TODO Auto-generated method stub
    
    		}
    
    	}
    
    
    	private View getViewToShow(int position){
    		View view = null;
    		View layout; 
    		LayoutInflater mInflater =  (LayoutInflater)
    		context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    
    		switch(position){
    
    		case 0: 
    			layout  = mInflater.inflate(R.layout.elements, null);
    			view = layout;
    			break;
    		case 1: view = 
    			layout  = mInflater.inflate(R.layout.elements2, null);
    		view = layout;
    
    		break;
    		}
    		return view;
    	}
    	
    }

Set default page for ViewPager in Android

I need to define the IP address in the class `System.Net.IPAddress` but the method:

    IPAddress ipaddress = IPAddress.Parse(&quot;127.0.0.1&quot;);  //127.0.0.1 as an example

doesn&#39;t work, is there another method?

How can I define the IP address?

C# IPAddress from string

I need to define the IP address in the class <code>System.Net.IPAddress</code> but the method:
<pre><code class="hljs language-arduino">IPAddress ipaddress = IPAddress.Parse("127.0.0.1"); //127.0.0.1 as an example
</code></pre>
doesn't work, is there another method?
How can I define the IP address?

I tried to serialize POCO class that was automatically generated from Entity Data Model .edmx and when I used

```c#
JsonConvert.SerializeObject 
```

I got the following error:

&gt; Error Self referencing loop detected for type System.data.entity occurs.

How do I solve this problem?

JSON.NET Error Self referencing loop detected for type

Let say, a file has the following attributes: `ReadOnly, Hidden, Archived, System`.
**How can I remove only one Attribute?** (for example ReadOnly)

If I use the following, it removes all the attributes:

    IO.File.SetAttributes(&quot;File.txt&quot;,IO.FileAttributes.Normal)



How to remove a single Attribute (e.g. ReadOnly) from a File?

I can&#39;t find the namespace to use for `[DataContract]` and `[DataMember]` elements. According to what I&#39;ve found, it seems that adding the following should be enough, but in my case it is not.

    using System;
    using System.Runtime.Serialization;

Here is a snippet of my code:

    using System;
    using System.Runtime.Serialization;

    namespace MyNamespace {

	    [DataContract]
	    public class Tuple&lt;T1, T2&gt; {
                // A custom implementation of a Tuple
                //...
                //...
            }
    }
And the error I get:
&gt;The type or namespace name &#39;DataContract&#39; could not be found (are you missing a using directive or an assembly reference?)

Am I not using the right namespaces?

Namespace for [DataContract]

Writing an infinite loop is simple:

    while(true){
        //add whatever break condition here
    }

But this will trash the CPU performance. This execution thread will take as much as possible from CPU&#39;s power.

What is the best way to lower the impact on CPU?
Adding some `Thread.Sleep(n)` should do the trick, but setting a high timeout value for `Sleep()` method may indicate an unresponsive application to the operating system.

Let&#39;s say I need to perform a task each minute or so in a console app.
I need to keep `Main()` running in an &quot;infinite loop&quot; while a timer will fire the event that will do the job. I would like to keep `Main()` with the lowest impact on CPU.

What methods do you suggest. `Sleep()` can be ok, but as I already mentioned, this might indicate an unresponsive thread to the operating system.

**LATER EDIT:**

I want to explain better what I am looking for:

1. I need a console app not Windows service. Console apps can simulate the Windows services on Windows Mobile 6.x systems with Compact Framework.

2. I need a way to keep the app alive as long as the Windows Mobile device is running.

3. We all know that the console app runs as long as its static Main() function runs, so I need a way to prevent Main() function exit.

4. In special situations (like: updating the app), I need to request the app to stop, so I need to infinitely loop and test for some exit condition. For example, this is why `Console.ReadLine()` is no use for me. There is no exit condition check.

5. Regarding the above, I still want Main() function as resource friendly as possible. Let asside the fingerprint of the function that checks for the exit condition.

CPU friendly infinite loop

This probably is a dummy question but I cannot find a clear indication. I have a POCO class in a MVC3 web application whose only purpose is managing the backup of some files in the server. Typically it creates a backup and returns the filename to the controller, which sends an email with the URL for downloading it. This works fine, but I cannot build the absolute URL to be sent. No matter which function I use, I always get a relative URL, like */Backup/TheFile.zip*, rather than e.g. *http://www.somesite.com/Backup/TheFile.zip*. I tried:

    VirtualPathUtility.ToAbsolute(&quot;~/Backup/SomeFile.zip&quot;);
    HttpRuntime.AppDomainAppVirtualPath + &quot;/Backup/SomeFile.zip&quot;;
    Url.Content(&quot;~/Backup/SomeFile.zip&quot;);

but they all return something like */Backup/SomeFile.zip*. Any idea?

Getting Absolute URL from an ASP.NET MVC Action

I&#39;m working with Ruby on Rails, Is there a way to strip `html` from a string using sanitize or equal method and keep only text inside value attribute on input tag?

Strip html from string Ruby on Rails

I understand is `c_str` convert a string that may or may not be null-terminated to a null-terminated string. 

Is this true? Can you give some examples?


What is use of c_str function?

I want to remove the last character from a string. I&#39;ve tried doing this:

    public String method(String str) {
        if (str.charAt(str.length()-1)==&#39;x&#39;){
            str = str.replace(str.substring(str.length()-1), &quot;&quot;);
            return str;
        } else{
            return str;
        }
    }

Getting the length of the string - 1 and replacing the last letter with nothing (deleting it), but every time I run the program, it deletes middle letters that are the same as the last letter.

For example, the word is &quot;admirer&quot;; after I run the method, I get &quot;admie.&quot; I want it to return the word admire.

How to remove the last character from a string?

If I have the following variable in javascript

     var myString = &quot;Test3&quot;;

what is the fastest way to parse out the &quot;3&quot; from this string **that works in all browsers (back to IE6**)

How can I get the last character in a string?

I have a string that contains some text followed by a blank line. What&#39;s the best way to keep the part with text, but remove the whitespace newline from the end?

How to remove newlines from beginning and end of a string?

I understand that a header `HTTP_X_FORWARDED_FOR` is set by proxy servers to identify the ip-address of the host that is making the HTTP request through the proxy. I&#39;ve heard claims that the header `HTTP_CLIENT_IP` is set for similar purposes.

1. What is the difference between `HTTP_CLIENT_IP` and `HTTP_X_FORWARDED_FOR`?
2. Why would one have different values than the other?
3. Where can I find resources on the exact definition of these headers.


What is the difference between HTTP_CLIENT_IP and HTTP_X_FORWARDED_FOR?

I&#39;m trying to use just the IP address (inet) as a parameter in a script I wrote.

Is there an easy way in a unix terminal to get just the IP address, rather than looking through `ifconfig`? 

Which terminal command to get just IP address and nothing else?

I need to store the IP address of the users who comment, in the database after form submission.

Is there any symfony2 function to get the IP? Or any other way to get the IP?

How do I get the user IP address in Symfony2 controller?

Is there a way to figure out the country name just by looking at an IP address? I mean, do countries have specific ranges of IP addresses? For example, Australia can have IP addresses only in the range of `123.45.56.89 - 231.54.65.98` (just an example)

Identifying country by IP address

I need to know how to get all network interfaces with their [IPv4][1] address. &lt;i&gt;Or just wireless and Ethernet.&lt;/i&gt;

To get all network interfaces details I use this:

    foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces()) {
        if(ni.NetworkInterfaceType == NetworkInterfaceType.Wireless80211 ||
           ni.NetworkInterfaceType == NetworkInterfaceType.Ethernet) {

            Console.WriteLine(ni.Name);
        }
    }

And to get the all hosted IPv4 addresses of the computer:

    IPAddress [] IPS = Dns.GetHostAddresses(Dns.GetHostName());
    foreach (IPAddress ip in IPS) {
        if (ip.AddressFamily == AddressFamily.InterNetwork) {

            Console.WriteLine(&quot;IP address: &quot; + ip);
        }
    }

But how to get the network interface and its right ipv4 address?

  [1]: http://en.wikipedia.org/wiki/IPv4


Content Type	Original Author	Original Content on Stackoverflow
Question	Patrick Lorio	View Question on Stackoverflow
Solution 1 - C#	Jon Cage	View Answer on Stackoverflow

C# IPAddress from string

C# Problem Overview

C# Solutions

Solution 1 - C#

Set default page for ViewPager in Android

How do I make a WPF TextBlock show my text on multiple lines?

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