Razor Syntax practice

RazorPractice.cshtml

@* https://stackoverflow.com/questions/6286868/convert-month-int-to-month-name/6286910 *@
@* https://blogs.msdn.microsoft.com/timlee/2010/07/30/using-functions-in-an-asp-net-page-with-razor-syntax/ *@


@{
    ViewData["Title"] = "RazorPractice";
}

<h1>Razor Practice</h1>

@{
    for (int i = 1; i < 6; i++)
    {
        <h3>@i Learning Razor Syntax</h3>
    }
}

<hr />

@* single line statements *@

@{
    string message = @" ""I am a single line statement"" ";
}

<h4>The message is: @message</h4>

<hr />

@* code block *@

@{
    int numberOne = 11;
    int numberTwo = 3;

    var result = numberOne + numberTwo;
}

<h4>Sum of @numberOne + @numberTwo = @result</h4>

<hr />

@* if/else *@

@{
    string messageTwo;

    int six = 6;

    if (six < 6)
    {
        messageTwo = "It is less  than 6";
    }
    else if (six > 6)
    {
        messageTwo = "It is greater than 6";
    }
    else
    {
        messageTwo = "It is equal to 6";
    }

    <h4>@messageTwo</h4>
}

<hr />

@* combine html and razor *@

@{
    string name = "Zelda";
    string role = "Princess";
}

<h4>Hello @name. Your role is @role of Hyrule.</h4>

<hr />

@* datetime *@


@{
    string year;
    string day;
    string month;
    string time;

    year = DateTime.Now.Year.ToString();
    day = DateTime.Now.DayOfWeek.ToString();
    month = DateTime.Now.Month.ToString();
    time = DateTime.Now.ToShortTimeString();
}



<h6> Current Time: @time</h6>
<h6> Current Day: @day</h6>
<h6> Current Month: @month</h6>
<h6> Current Year: @year</h6>

<hr />

@* converting integer *@

@{

    var numberToConvert = "626";
    int numberConverted;

    if (int.TryParse(numberToConvert, out numberConverted))
    {
        <h5>@numberConverted is integer value</h5>
    }
    else
    {
        <h5>@numberConverted is not integer</h5>
    }

}

<hr />

@{
    var b = "false";
    bool bln;

    if (Boolean.TryParse(b, out bln))
    {
        <h5>Boolean is: @bln</h5>
    }
}

<hr />

@* operators *@

@{
    int numberOneOper = 81;
    int numberTwoOper = 9;

    int plus = numberOneOper + numberTwoOper;
    int minus = numberOneOper - numberTwoOper;
    int multiply = numberOneOper * numberTwoOper;
    int divide = numberOneOper / numberTwoOper;
}

<h6>Addition: @numberOneOper + @numberTwoOper = @plus</h6>
<h6>Subtraction: @numberOneOper - @numberTwoOper = @minus</h6>
<h6>Multiply: @numberOneOper * @numberTwoOper = @multiply</h6>
<h6>Division: @numberOneOper / @numberTwoOper = @divide</h6>

<hr />

@* nested for loop*@

@{
    int[] numArrayOne = { 12, 52, 66, 92, 28 };
    int[] numArrayTwo = { 73, 12, 98, 23, 52 };

    for (int i = 0; i < 5; i++)
    {
        for (int j = 0; j < 5; j++)
        {
            if (numArrayOne[i] == numArrayTwo[j])
            {
                <h5>Match found: @numArrayOne[i]</h5>
            }
        }
    }
}

<hr />

@* foreach list *@

@{
    List<string> firstNames = new List<string>();

    firstNames.Add("Sita");
    firstNames.Add("Gita");
    firstNames.Add("Mita");

    foreach (string firstName in firstNames)
    {
        <h3><i>My name is: @firstName</i></h3>
    }

}

<hr />

@* != *@

@{
    int numberSix = 6;
    int numberTen = 10;

    if (numberSix != numberTen)
    {
        <h6>Returns True</h6>
    }
}

<hr />

@* string concat *@

@{
    string concatThis = "This is a Razor tutorial";
    string withThis = ", it's simple!";
    string concatFinal = $"{concatThis}{withThis}";

    <h4>@concatFinal</h4>
}

<hr />

@* increment/decrement *@

@{
    int incrementThis = 8;

    <h5>Increment of @incrementThis is @{incrementThis++;}: @incrementThis </h5>
    <h5>Decrement of @incrementThis is @{incrementThis--;}: @incrementThis  </h5>

    <h5>Increment of @incrementThis  by 2 is @{incrementThis += 2;}: @incrementThis  </h5>
    <h5>Decrement of @incrementThis by 2 is @{incrementThis -= 2;}: @incrementThis  </h5>
}

<hr />

@* array access by index *@

@{
    int[] arrayAccessExample = { 12, 3, 5, 6 };

    <h3>The index at slot 2 is: @arrayAccessExample[2]</h3>
}

<hr />

@* logical operators *@

@{
    string userName = "Kelly";
    string password = "Kells*Bells!";

    if (userName == "Kelly" && password == "Kells*Bells!")
    {
        <h3>Login Successful</h3>
    }
    else if (userName == "Kelly" || password == "1234")
    {
        <h3>Hello Kelly, you have entered the wrong password.</h3>
    }
    else
    {
        <h3>Unauthorized password</h3>
    }
}

<hr />

@* if/else *@

@{
    if (DateTime.Now.DayOfWeek.ToString() == "Sunday")
    {
        <h3>It's Sunday</h3>
    }
    else if (DateTime.Now.DayOfWeek.ToString() == "Monday")
    {
        <h3>Monday Blues</h3>
    }
    else
    {
        <h3>Today is: @DateTime.Now.DayOfWeek</h3>
    }
}

<hr />

@* while loop *@

@{
    int whileLoop = 0;
    while (whileLoop < 6)
    {
        <h4>This while loop prints 6 times</h4>
        whileLoop++;
    }
}

<hr />

@* array *@

@{
    <h3>Single dimensional array</h3>
    int[] numbers = { 1, 3, 5, 7, 11, 13, 17, 19 };

    foreach (int number in numbers)
    {
        <span>@number, </span>
    }

    // multi dim array

    <h3>Multi dimensional array</h3>
    string[,] letter = new string[3, 2] { { "a", "b" }, { "c", "d" }, { "e", "f" } };

    for (int i = 0; i < 3; i++)
    {
        for (int j = 0; j < 2; j++)
        {
            <span>@letter[i, j]</span>
        }
    }
    <br />
}

<hr />

@* dictonaries *@

@{
    var peopleDict = new Dictionary<string, int>();
    peopleDict.Add("Sita", 88);
    peopleDict.Add("Gita", 78);
    peopleDict.Add("Mita", 68);
}
<h3>Results of the student's grade are</h3>

<h4>Sita of the student's grade are: @peopleDict["Sita"] </h4>
<h4>Gita of the student's grade are: @peopleDict["Gita"] </h4>
<h4>Mita of the student's grade are: @peopleDict["Mita"] </h4>

<hr />

@*  --------------------------- methods ---------------------------  *@

@functions{
    public string SayHello(string firstName, string lastName)
    {
        return $"Hello my name is {firstName} {lastName}";
    }
}

<h3>@SayHello("Grace", "Kelly")</h3>

<hr />

@functions{
    public string DateFormated()
    {
        string year = DateTime.Now.Year.ToString();
        string day = DateTime.Now.DayOfWeek.ToString();
        string time = DateTime.Now.ToShortTimeString();
        DateTime month = DateTime.Now;
        string monthProper = month.ToString("MMMM");


        return $"The date is: {monthProper}, {day}, {year}.\n The time is {time}";


    }
}

<h3>@DateFormated()</h3>

<hr />

@*error handling*@

@functions{
    public int Divide(int x, int y)
    {
        string cannotDivideMessage;
        try
        {
            return x / y;
        }
        catch (DivideByZeroException e)
        {

            cannotDivideMessage = e.ToString();
            WriteLiteral("<br /> Cannot divide by zero <br /> <br/>");
            WriteLiteral($"Additional information: <br/> <br/> {cannotDivideMessage}");
            return 0;
        }
    }

}

<h6>Division of 10 / 5 is @Divide(10,5)</h6>
<h6>Add of 12 + 0 is @Divide(12,0)</h6>