No, there are no octal number literals in C#.

For strings: `Convert.ToInt32(&quot;12&quot;, 8)` returns `10`.

No there isn&#39;t, the language specification (ECMA-334) is quite specific.

4th edition, page 72

&gt; 9.4.4.2 Integer literals
&gt; ------------------------
&gt; 
&gt; Integer literals are used to write values of types int, uint, long,
&gt; and ulong. Integer literals have two  possible forms: decimal and
&gt; hexadecimal.

No octal form.

No, there are no octal literals in C#.

If necessary, you could pass a string and a base to [`Convert.ToInt32`][1], but it&#39;s obviously nowhere near as nice as a literal:

    int i = Convert.ToInt32(&quot;12&quot;, 8);


  [1]: http://msdn.microsoft.com/en-us/library/1k20k614.aspx

No, there are no octal numbers in C#.

Use `public static int ToInt32(string value, int fromBase);`

    fromBase
    Type: System.Int32
    The base of the number in value, which must be 2, 8, 10, or 16.

[MSDN][1]


  [1]: http://msdn.microsoft.com/en-us/library/1k20k614.aspx

You can&#39;t use literals, but you can parse an octal number: `Convert.ToInt32(&quot;12&quot;, 8)`.

I have noticed that some applications change their controls position to adjust them as much as possible in the resolution as possible, If window is maximized they set themselves in such a way that over all GUI looks balanced.
My question is that is it possible to make or implement this functionality in Visual studio 2010 C#?

How to auto resize and adjust Form controls with change in resolution

Why when i use SimpleCursorAdapter for ListView i have items height in ListView like this - ![listview image][1]

(My code based on [this][2])

**But when using arrays Listview items have big height**  

![listview big][3]

(I learn listview based on [this][4])

Row layout for item listview is

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;TextView android:id=&quot;@+id/text1&quot;
    xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    android:layout_width=&quot;wrap_content&quot;
    android:layout_height=&quot;wrap_content&quot;/&gt;

**So My question is why there is a difference in row heights when using ArrayAdapter and SimpleCursorAdapter?**


  [1]: http://i.stack.imgur.com/tS8xS.jpg
  [2]: https://stackoverflow.com/questions/2982948/sqlite-and-populating-list-view-android
  [3]: http://i.stack.imgur.com/tSrYu.png
  [4]: http://androidpeople.com/android-listview-example/

android listview item height

In C language octal number can be written by placing `0` before number e.g.

     int i = 012; // Equals 10 in decimal.

I found the equivalent of hexadecimal in C# by placing `0x` before number e.g.

     int i = 0xA; // Equals 10 in decimal.

Now my question is: 
**Is there any equivalent of octal number in C# to represent any value as octal?**



Octal equivalent in C#

In C language octal number can be written by placing <code>0</code> before number e.g.
<pre><code class="hljs language-ini"> int i = 012; // Equals 10 in decimal.
</code></pre>
I found the equivalent of hexadecimal in C# by placing <code>0x</code> before number e.g.
<pre><code class="hljs language-ini"> int i = 0xA; // Equals 10 in decimal.
</code></pre>
Now my question is:
Is there any equivalent of octal number in C# to represent any value as octal?

I come from a C++ background, so apologies if this is a non-C# way of thinking, but I just need to know. :)

In C++ if I have two pointers, and I want to know if they point to the same thing, I can look in the memory/watch window and see their value - to see if they are pointing to the same memory space.

In C#, I haven&#39;t been able to find something along those lines.  One reference type with exactly the same values could in fact be the exact same object, or it could be something wildly different.

Is there a way for me to see this kind of information in C#?  Perhaps some kind of equivalent to the &amp; operator for the watch window or some such?

Uniquely Identifying Reference Types in the Debugger

When I create a WebClient to consume some RESTful xml, I can specify the unicode encoding 2 ways:

	WebClient wc = new WebClient ();
	wc.Encoding = Encoding.UTF8;
	wc.Encoding = UTF8Encoding.UTF8;

Which is correct/better ?


WebClient Unicode - Which UTF8?



Just have a problem here that I have no idea how to fix. I am doing a small project which involves a GUI and serial data. The GUI is being run by the main thread and since the data variables that hold my incoming serial data need to be updated continuously, these are being updated in a second thread. The problem is when I need to update some textboxes on the GUI, these need to be updated with data from the secondary thread and that is where my problem lies. I can&#39;t update them directly from the secondary thread and I have no idea how I would transfer data from my secondary thread and work out a system of updating them from main thread. I have put my code below:

Any help would be great.



    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Windows;
    using System.Windows.Controls;
    using System.Windows.Data;
    using System.Windows.Documents;
    using System.Windows.Input;
    using System.Windows.Media;
    using System.Windows.Media.Imaging;
    using System.Windows.Navigation;
    using System.Windows.Shapes;
    using System.IO;
    using System.IO.Ports;
    using System.Threading;
    
    namespace GUIBike
    {
        /// &lt;summary&gt;
        /// Interaction logic for MainWindow.xaml
        /// &lt;/summary&gt;
        public partial class MainWindow : Window
        {
            public static string inputdata;
            public static int MaximumSpeed, maximumRiderInput, RiderInput, Time, CurrentSpeed, DistanceTravelled, MaximumMotorOutput, MotorOutput, InputSpeed;
            public static string SaveDataString;
            public Thread Serial;
            public static SerialPort SerialData;
            public static string[] portlist = SerialPort.GetPortNames();
            public static string[] SaveData = new string[4];
            public static string directory = &quot;C:\\&quot;;
    
            public MainWindow()
            {
                Serial = new Thread(ReadData);
                InitializeComponent();
                int Count = 0;
                for (Count = 0; Count &lt; portlist.Length; Count++)
                {
                    ComPortCombo.Items.Add(portlist[Count]);
                }
            }
    
            private void StartDataButton_Click(object sender, RoutedEventArgs e)
            {
                SerialData = new SerialPort(ComPortCombo.Text, 19200, Parity.None, 8, StopBits.One);
                SerialData.Open();
                SerialData.WriteLine(&quot;P&quot;);
                Serial.Start();
                StartDataButton.IsEnabled = false;
                EndDataButton.IsEnabled = true;
                ComPortCombo.IsEnabled = false;
                CurrentSpeed = 0;
                MaximumSpeed = 0;
                Time = 0;
                DistanceTravelled = 0;
                MotorOutput = 0;
                RiderInput = 0;
                SaveData[0] = &quot;&quot;;
                SaveData[1] = &quot;&quot;;
                SaveData[2] = &quot;&quot;;
                SaveData[3] = &quot;&quot;;
                SaveDataButton.IsEnabled = false;
                if (SerialData.IsOpen)
                {
                    ComPortStatusLabel.Content = &quot;OPEN&quot;;
                    SerialData.NewLine = &quot;/n&quot;;
                    SerialData.WriteLine(&quot;0&quot;);
                    SerialData.WriteLine(&quot;/n&quot;);
                }
            }
    
            private void EndDataButton_Click(object sender, RoutedEventArgs e)
            {
                SerialData.Close();
                SaveDataButton.IsEnabled = true;
                SerialData.WriteLine(&quot;1&quot;);
                SerialData.WriteLine(&quot;0&quot;);
                if (!SerialData.IsOpen)
                {
                    ComPortStatusLabel.Content = &quot;CLOSED&quot;;
                }
                int i = 0;
                for (i = 0; i &lt; 4; i++)
                {
                    if (i == 0)
                    {
                        SaveDataString = &quot;MaximumSpeed during the Ride was = &quot; + Convert.ToString(MaximumSpeed) + &quot;m/h&quot;;
                        SaveData[i] = SaveDataString;
                    }
                    if (i == 1)
                    {
                        SaveDataString = &quot;Total Distance Travelled = &quot; + Convert.ToString(DistanceTravelled) + &quot;m&quot;;
                        SaveData[i] = SaveDataString;
                    }
                    if (i == 2)
                    {
                        SaveDataString = &quot;Maximum Rider Input Power = &quot; + Convert.ToString(maximumRiderInput) + &quot;Watts&quot;;
                        SaveData[i] = SaveDataString;
                    }
                    if (i == 3)
                    {
                        SaveDataString = &quot;Maximum Motor Output Power = &quot; + Convert.ToString(MaximumMotorOutput) + &quot;Watts&quot;;
                        SaveData[i] = SaveDataString;
                    }
                }
            }
    
            private void SaveDataButton_Click(object sender, RoutedEventArgs e)
            {
                //File.WriteAllBytes(directory + &quot;image&quot; + imageNO + &quot;.txt&quot;, ); //saves the file to Disk    
                File.WriteAllLines(directory + &quot;BikeData.txt&quot;, SaveData);
            }
    
            public void ReadData()
            {
                int counter = 0;
    
                while (SerialData.IsOpen)
                {
                    if (counter == 0)
                    {
                        //try
                        //{
                            InputSpeed = Convert.ToInt16(SerialData.ReadChar());
                            CurrentSpeed = InputSpeed;
                            if (CurrentSpeed &gt; MaximumSpeed)
                            {
                                MaximumSpeed = CurrentSpeed;
                            }
                            SpeedTextBox.Text = &quot;Current Wheel Speed = &quot; + Convert.ToString(CurrentSpeed) + &quot;Km/h&quot;;
                            DistanceTravelled = DistanceTravelled + (Convert.ToInt16(CurrentSpeed) * Time);
                            DistanceTravelledTextBox.Text = &quot;Total Distance Travelled = &quot; + Convert.ToString(DistanceTravelled) + &quot;Km&quot;;
                        //}
                        //catch (Exception) { }
                    }
                    if (counter == 1)
                    {
                        try
                        {
                            RiderInput = Convert.ToInt16(SerialData.ReadLine());
                            if (RiderInput &gt; maximumRiderInput)
                            {
                                maximumRiderInput = RiderInput;
                            }
                            RiderInputTextBox.Text = &quot;Current Rider Input Power =&quot; + Convert.ToString(RiderInput) + &quot;Watts&quot;;
                        }
                        catch (Exception) { }
                    }
                    if (counter == 2)
                    {
                        try
                        {
                            MotorOutput = Convert.ToInt16(SerialData.ReadLine());
                            if (MotorOutput &gt; MaximumMotorOutput)
                            {
                                MaximumMotorOutput = MotorOutput;
                            }
    
                            MotorOutputTextBox.Text = &quot;Current Motor Output = &quot; + Convert.ToString(MotorOutput) + &quot;Watts&quot;;
                        }
                        catch (Exception) { }
                    }
                    counter++;
                    if (counter == 3)
                    {
                        counter = 0;
                    }
                }
            }
    
            private void ComPortCombo_SelectionChanged(object sender, SelectionChangedEventArgs e)
            {
                StartDataButton.IsEnabled = true;
            }
    
    
            private void Window_Closed(object sender, RoutedEventArgs e)
            {
                if (SerialData.IsOpen)
                {
                    SerialData.Close();
                }
            }


Updating GUI (WPF) using a different thread

I&#39;m using EF4 and new to it. I have a many to many in my project and cannot seem to work out how to insert or update. I have build a small project just to see how it should be coded.

Suppose I have 3 tables

 1. Class : ClassID-ClassName 
 2. Student : StudentID-FirstName-Surname
 3. StudentClass : StudentID-ClassID

After adding all the relationship and updated the model via model browser I have noticed that StudentClass does not appear, this seems to be default behaviour.

Now I need to do both an Insert and Update. How do you do it? Any code samples or link where I can download an example, or can you spare 5 mins?

Insert/Update Many to Many Entity Framework . How do I do it?

I want to get the files in folder and also in its subfolders.The following code does not get the files in its subfolder:

    string[] files = Directory.GetFiles(txtFolderPath.Text, &quot;*ProfileHandler.cs&quot;);

Can anyone Please tell me how to implement this in c# .net?

How to loop through all the files in a directory in c # .net?

I have a DateTime variable:

    DateTime date = DateTime.Now;

I want to change the time part of a DateTime variable. But when I tried to access time part (hh:mm:ss) these fields are readonly.

Can&#39;t I set these properties?





How to set only time part of a DateTime variable in C#

What is the difference between OpenWrap and NuGet. And what you prefer ?

OpenWrap vs NuGet

I have an array defined:

    int [,] ary;
    // ...
    int nArea = ary.Length; // x*y or total area

This is all well and good, but I need to know how wide this array is in the `x` and `y` dimensions individually. Namely, `ary.Length` might return 12 - but does that mean the array is 4 high and 3 wide, or 6 high and 2 wide?

How can I retrieve this information?

How do you get the width and height of a multi-dimensional array?

I would like to extract all the numbers contained in a string. Which is better suited for the purpose, regular expressions or the `isdigit()` method?

Example:

    line = &quot;hello 12 hi 89&quot;

Result:

    [12, 89]


How to extract numbers from a string in Python?

What&#39;s the correct way to round a PHP string to two decimal places?

    $number = &quot;520&quot;; // It&#39;s a string from a database

    $formatted_number = round_to_2dp($number);

    echo $formatted_number;

The output should be `520.00`;

How should the `round_to_2dp()` function definition be?



Show a number to two decimal places

How can I get a count of the total number of digits of a number in C#? For example, the number 887979789 has 9 digits.

How can I get a count of the total number of digits in a number?

I know that the NSDateformatter suite of functionality is a boon for mankind, but at the same time it is very confusing to me. I hope you can help me out.

Somewhere in my code, there is an int representing a month. So: 1 would be January, 2 February, etc.

In my user interface, I would like to display this integer as proper month name. Moreover, it should adhere to the locale of the device.

Thank you for your insights


In the mean time, I have done the following:


    int monthNumber = 11
    NSString * dateString = [NSString stringWithFormat: @&quot;%d&quot;, monthNumber];
    
    NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@&quot;MM&quot;];
    NSDate* myDate = [dateFormatter dateFromString:dateString];
    [dateFormatter release];
    	
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@&quot;MMMM&quot;];
    NSString *stringFromDate = [formatter stringFromDate:myDate];
    [formatter release];


is this the way to do it? It seems a bit wordy.






iOS: How to get a proper Month name from a number?

I have float numbers like `3.2` and `1.6`.

I need to separate the number into the integer and decimal part. For example, a value of `3.2` would be split into two numbers, i.e. `3` and `0.2`

Getting the integer portion is easy:

    n = Math.floor(n);

But I am having trouble getting the decimal portion.
I have tried this:

    remainder = n % 2; //obtem a parte decimal do rating

But it does not always work correctly.

The previous code has the following output:

    n = 3.1 // gives remainder = 1.1

What I am missing here?

Content Type	Original Author	Original Content on Stackoverflow
Question	Javed Akram	View Question on Stackoverflow
Solution 1 - C#	ulrichb	View Answer on Stackoverflow
Solution 2 - C#	Julien Roncaglia	View Answer on Stackoverflow
Solution 3 - C#	LukeH	View Answer on Stackoverflow
Solution 4 - C#	abatishchev	View Answer on Stackoverflow
Solution 5 - C#	Mike Dour	View Answer on Stackoverflow

Octal equivalent in C#

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Solution 5 - C#

android listview item height

How to auto resize and adjust Form controls with change in resolution

Attributions