How to create a function in a cshtml template?

2018-06-30 13:41:02

I need to create a function that is only necessary inside one cshtml file. You can think of my situation as ASP.NET page methods, which are min web services implemented in a page, because they're scoped to one page. I know about HTML helpers (extension methods), but my function is just needed in one cshtml file. I don't know how to create a function signature inside a view. Note : I'm using Razor template engine.

You can use the @helper Razor directive:

@helper WelcomeMessage(string username)
{
    <p>Welcome, @username.</p>
}

Then you invoke it like this:

@WelcomeMessage("John Smith")

为什么不直接在cshtml文件中声明该函数？

@functions{
    public string GetSomeString(){
        return string.Empty;
    }
}

<h2>index</h2>
@GetSomeString()

如果你的方法不必返回html并且必须做其他的事情，那么你可以在Razor中使用lambda而不是helper方法

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";

    Func<int,int,int> Sum = (a, b) => a + b;
}

<h2>Index</h2>

@Sum(3,4)

链接地址: http://www.djcxy.com/p/85290.html

上一篇: 为什么在升级到新版本的Xcode后，安装Alcatraz的Xcode插件（如clang格式）不再有效？

下一篇: 如何在cshtml模板中创建一个函数？