System.Security.Principal.WindowsIdentity identity =
  System.Security.Principal.WindowsIdentity.GetCurrent();

Console.WriteLine(identity.Name);

Post from: One .Net Way

Get Current Windows User In C#

string filePath = @"c:\deepak\MeeGo.jpg";

Image img = Image.FromFile(filePath);

Console.WriteLine(string.Format("Height: {0}",img.Size.Height));

Console.WriteLine(string.Format("Width: {0}",img.Size.Width));

Post from: One .Net Way

Get Width And Height Of Image In C#

ManagementObjectSearcher mgmtObjects = 

  new ManagementObjectSearcher("Select * from Win32_Registry");

foreach (var item in mgmtObjects.Get())
{
  Console.WriteLine(string.Format("Current Size: {0}MB", item["CurrentSize"]));
  Console.WriteLine(string.Format("Maximum Size: {0}MB", item["MaximumSize"]));
}

The output.

Post from: One .Net Way

Get Windows Registry Size With WMI And C#

// Declare an array with 10 elements
int[] numbers = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

// Output elements in original order
for (int i = 0; i < numbers.Length; i++)
{
  Console.Write(" {0}", numbers[i]);
}
Console.WriteLine();

// Reverse the array
Array.Reverse(numbers);

// Output elements with changed order
for (int i = 0; i < numbers.Length; i++)
{
  Console.Write(" {0}", numbers[i]);
}

Console.ReadKey();

Here is the output.

Array.Reverse method also provides an overload which can be used to reverse elements at a given indexes. For example we want to reverse elements 3, 4 and 5 but leave others intact. This can be achieved using the following code snippet.

// Declare an array with 10 elements
int[] numbers = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

// Output elements in original order
for (int i = 0; i < numbers.Length; i++)
{
   Console.Write(" {0}", numbers[i]);
}
Console.WriteLine();

// Reverse numbers 3 , 4 and 5
Array.Reverse(numbers, 2, 3);

// Output elements with changed order
for (int i = 0; i < numbers.Length; i++)
{
  Console.Write(" {0}", numbers[i]);
}

Console.ReadKey();

And the output is.

Post from: One .Net Way

Reverse Array Elements Using C#

Using the overload I can convert for example hex string “BB” to a number.

int number = Convert.ToInt32("BB", 16);

And the number variable gets assigned value of 187.

Post from: One .Net Way

Convert Hexadecimal To Number In C#

EXEC xp_fixeddrives

Here is output on my machine.

Post from: One .Net Way

Get Free Disk Space Using T-SQL

SELECT * FROM sys.indexes

And here is the partial output from AdventureWorks database.

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SQL Server 2008 – Get All Indexes In A Database

string assemblyName;
assemblyName = System.Reflection.Assembly.GetExecutingAssembly().FullName;
Console.WriteLine(assemblyName);

Output for the above code returns the fully qualified name as shown below

To just get the Assembly name we can use this snippet.

string assemblyName;
assemblyName = System.Reflection.Assembly.GetExecutingAssembly().GetName().Name;
Console.WriteLine(assemblyName);

Here is the output.

Post from: One .Net Way

Get Name Of Current Executing Assembly In C#

ManagementObjectSearcher mgmtObjects = 

  new ManagementObjectSearcher("Select * from Win32_CDROMDrive");

foreach (var item in mgmtObjects.Get())
{
  Console.WriteLine("Drive Letter - \t" + item["Drive"]);
  Console.WriteLine("Name - \t" + item["Name"]);
}

This code snippet will print out the letter and the name of all CD or DVD drives on a machine. Here is the output on my PC.

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Get CD Or DVD Drive Information Using WMI And C#

(from c in Customers

select c)

.OrderByDescending(x=> x.CustomerID).First()

Here is the result as displayed in LINQPad

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Get Last Row From Table Using LINQ To SQL