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How to get the AM or PM value from a DateTime object in C# ?

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There are times when you might want to get only the string AM or PM from the DateTime object that you have.

How to get the AM or PM value from a DateTime object in C# ?

You can get this by using the format specifiers in the ToString method as shown in the code snippet.

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            var Data = 
                DateTime.Now.ToString("tt", System.Globalization.CultureInfo.InvariantCulture);
            
            Console.WriteLine(Data);
            Console.ReadLine();
        }
    }
}

C# program to print the multiplication table of a given number.

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Problem

Write a program in Microsoft Visual C# that takes a number as input and prints its multiplication table.

Solution

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Abundantcode.com coding sample");
            int number;
            Console.WriteLine("Enter the Number : ");
            number = int.Parse(Console.ReadLine());
            for (int i = 1; i <= 10; i++)
                Console.WriteLine(number + " x " + i + " = " + number * i);         
            Console.Read();
        }
    }
}

Output

Abundantcode.com coding sample

Enter the Number :

5

5 x 1 = 5

5 x 2 = 10

5 x 3 = 15

5 x 4 = 20

5 x 5 = 25

5 x 6 = 30

5 x 7 = 35

5 x 8 = 40

5 x 9 = 45

5 x 10 = 50

C# Program to swap two numbers without using temporary variable

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Problem

Write a program in Visual CSharp to swap two numbers using temporary variable and display the result in the console window.

How to swap two numbers in C# without using temporary variable ?

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Abundantcode.com coding sample");
            int number1, number2;
            Console.WriteLine("Enter the First Number : ");
            number1 = int.Parse(Console.ReadLine());
            Console.WriteLine("Enter the Second Number : ");
            number2 = int.Parse(Console.ReadLine());
            number1 = number1 - number2;
            number2 = number1 + number2;
            number1 = number2 - number1;
            Console.WriteLine("First Number is " + number1);
            Console.WriteLine("Second Number is " + number2);
            Console.Read();
        }
    }
}

Output

Abundantcode.com coding sample

Enter the First Number :

45

Enter the Second Number :

67

First Number is 67

Second Number is 45

C# Program to swap two numbers

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Problem

Write a program in C# to swap two numbers using temporary variable and display the result in the console window.

How to swap two numbers in C# and display it in the Console ?

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Abundantcode.com coding sample");
            int number1, number2, temp;
            Console.WriteLine("Enter the First Number : ");
            number1 = int.Parse(Console.ReadLine());
            Console.WriteLine("Enter the Second Number : ");
            number2 = int.Parse(Console.ReadLine());
            temp = number1;
            number1 = number2;
            number2 = temp;
            Console.WriteLine("First Number is " + number1);
            Console.WriteLine("Second Number is " + number2);
            Console.Read();
        }
    }
}

Output

Abundantcode.com coding sample

Enter the First Number :

25

Enter the Second Number :

87

First Number is 87

Second Number is 25

C# Program to print the sum of two numbers

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Problem

Write a program in C# to add two numbers and display the result in copnsole window.

How to print the sum of two numbers in C# ?

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            int input1 = 10;
            int input2 = 25;
            int result = input1 + input2;
            Console.WriteLine("Abundantcode.com coding sample");
            Console.WriteLine(result);
            Console.ReadLine();
        }
    }
}

Output

Abundantcode.com coding sample

35

C# Program to find the ASCII Value of a Character

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Problem

Write a program in Visual C# to find the ASCII value of the input character.

How to find the ASCII value of a character in C# ?

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Abundantcode.com coding sample");
            Console.Write("Enter a character : ");
            char input = char.Parse(Console.ReadLine());
            // casting to convert the integer representation of the character
            int asciiValue = (int)input;
            Console.WriteLine(asciiValue);
            Console.ReadLine();
        }
    }
}

Output

Abundantcode.com coding sample

Enter a character : A

65

How to download a file from a URL using C#?

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You can use the WebClient class in C# to download a file.

How to download a file from a URL using C#?

Here’s a code snippet demonstrating how you can download a file using the instance of the WebClient class in C#.

using (var webclient = new WebClient())
{
    webclient.DownloadFile("https://abundantcode.com/file/banner.jpg", "banner.jpg");
}

How to get the column names from a SqlDataReader in C#?

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There are times when you might want to connect to a database and then get all the column names that was returned in the SqlDataReader object.

How to get the column names from a SqlDataReader in C#?

Here’s a code snippet demonstrating how to do it.

var slqreaderobj = cmd.ExecuteReader();
var columnnames = Enumerable.Range(0, slqreaderobj.FieldCount).Select(slqreaderobj.GetName).ToList();