Razor and razor

Razor and razor
Preface:

The core of the Razor engine is to identify the @ symbol and angle brackets:
1. <...> </...>
2. <.../>
[For more information, see the example below.]

@for (int i = 0; i < 5; i++)

{

    <test>i</test>

}

Basic Syntax: Syntax 1 ,@()

Expression

@ (1 = 0? "1 equals 0": "1 not equal to 0 ")

Syntax 2 ,@{}

Statement Block

@{

    var now = DateTime.Now;

    if (now.Hour.CompareTo(12) < 0)

    {

<Span> morning </span>

    }

    else

    {

<Span> afternoon </span>

    }

}

Syntax 3 ,@

1. @ directly follows the variable output content
2. @ directly follow the return value of the method output method with returned values
3. if-else, switch, for, foreach, while, do-while and other flow control statements

@now.Hour<br />

@now.ToShortDateString()<br />

@if (now.Hour.CompareTo(12) < 0)

{

<Span> morning </span>

}

else

{

<Span> afternoon </span>

}

<br />

@for (int i = 0; i < 5; i++)

{

    <span>@i</span>

}

Special scenarios: @ note 1. The programming language must be isolated from the output string. 2. You cannot call a method without a return value. The solution is to use the statement block @{}. <Span> cannot switch to the @ now. Programming Language </span> <br/> <Span> cannot switch to the @ now. Programming Language </span> <br/> @{ RazorTestClass.SayHello(); } public class RazorTestClass { public static void SayHello() { return; }   public static string SayHello<T>(T t) { return t.ToString(); } }

Syntax 4: @ helper

Declaration Method

@helper paging(uint itemCount,uint pageSize,uint pageIndex)

{

    uint totalPagesCount = itemCount%pageSize == 0 ? itemCount/pageSize : itemCount/pageSize + 1;

if (0 ==

    totalPagesCount 

)

{

    totalPagesCount = 1;

}

for (

uint i = 1; i <= totalPagesCount; i++)

{

if (

i == pageIndex)

{

    <a class="pagination current" href="#?pageIndex=@i">@i</a>

}

else

{

    <a class="pagination" href="#?pageIndex=@i">@i</a>

}

}

    }

@paging(51, 10, 3)

Syntax 5 ,@**@

Note

@*

This is a comment

*@

Syntax 6. Razor built-in labels <text> </text>

Used to directly output content

@for (int i = 0; i < 5; i++)

{

    <text>@i</text>

}

Syntax 7. escape characters

Example:
@@
@ Class

@{

@: Escape Character @@

}

 

Supplement:

The output HTML of the Razor engine will be escaped by default. It is most convenient to use the html. Raw () method without escaping the output.

@{ 

Var str = "<div style = 'color: red'> will I be escaped? </Div> ";

}

@str

@Html.Raw(str)