ASP.NET Core快速入门教程

    public class testcontroller : controller
    {

    }

    [controller]
    public class test : controller
    {

    }

        public iactionresult hello()
        {
            // query
            var name = request.query["name"];
            // querystring
            var query = request.querystring.value;
            // form
            var username = request.form["username"];
            // cookies
            var cookie = request.cookies["item"];
            // headers
            var headers = request.headers["salt"];

            return content("hello");
        }

        public iactionresult hello()
        {       
            // byte[]
            httpcontext.session.set("byte", new byte[] { 1, 2, 3, 4, 5 });
            var bytes = httpcontext.session.get("byte");
            // string
            httpcontext.session.setstring("name", "tom");
            var name = httpcontext.session.getstring("name");
            // int
            httpcontext.session.setint32("id", 20);
            var id = httpcontext.session.getint32("id");
            httpcontext.session.remove("name");
            httpcontext.session.clear();
            
            return content("hello");
        }

        public iactionresult hello(requestmodel request,int? age)
        {
            // 查询字符串
            var test = request.query["test"];
            // 简单类型
            var userage = age;
            // 自定义类型
            var name = request.name;

            return content("hello");
        }

        public class requestmodel
        {
            public string name { get; set; }       
        }

    /// <summary>
    /// 拍卖师控制类
    /// </summary>
    [noncontroller]
    public class auctioncontroller
    {

    }

        public iactionresult say(
            [fromform]string name,
            [fromquery]int age,
            [fromheader] string salt,
            [frombody] string content
            )
        {
            return view();
        }

    [controller]
    public class test : controller
    {
        private readonly imemorycache _cache;

        public test(imemorycache memorycache)
        {
            this._cache = memorycache;   
        }

        public iactionresult readcache()
        {
            _cache.set("name","tom");
            _cache.get("name");

            _cache.set("age",30);
            _cache.get("age");

            user tom = new user(){ name = "admin",pwd = "123456"};
            _cache.set<user>("user",tom);
            _cache.get<user>("user");
            return content("ok");
        }
    }

    public class user
    {
        public string name { get; set; }
        public string pwd { get; set; }
    }

  public abstract class validationattribute : attribute
  {
    /// <summary>initializes a new instance of the <see cref="t:system.componentmodel.dataannotations.validationattribute"></see> class.</summary>
    protected validationattribute();

    /// <summary>initializes a new instance of the <see cref="t:system.componentmodel.dataannotations.validationattribute"></see> class by using the function that enables access to validation resources.</summary>
    /// <param name="errormessageaccessor">the function that enables access to validation resources.</param>
    /// <exception cref="t:system.argumentnullexception"><paramref name="errormessageaccessor">errormessageaccessor</paramref> is null.</exception>
    protected validationattribute(func<string> errormessageaccessor);

    /// <summary>initializes a new instance of the <see cref="t:system.componentmodel.dataannotations.validationattribute"></see> class by using the error message to associate with a validation control.</summary>
    /// <param name="errormessage">the error message to associate with a validation control.</param>
    protected validationattribute(string errormessage);

    /// <summary>gets or sets an error message to associate with a validation control if validation fails.</summary>
    /// <returns>the error message that is associated with the validation control.</returns>
    public string errormessage { get; set; }

    /// <summary>gets or sets the error message resource name to use in order to look up the <see cref="p:system.componentmodel.dataannotations.validationattribute.errormessageresourcetype"></see> property value if validation fails.</summary>
    /// <returns>the error message resource that is associated with a validation control.</returns>
    public string errormessageresourcename { get; set; }

    /// <summary>gets or sets the resource type to use for error-message lookup if validation fails.</summary>
    /// <returns>the type of error message that is associated with a validation control.</returns>
    public type errormessageresourcetype { get; set; }

    /// <summary>gets the localized validation error message.</summary>
    /// <returns>the localized validation error message.</returns>
    protected string errormessagestring { get; }

    /// <summary>gets a value that indicates whether the attribute requires validation context.</summary>
    /// <returns>true if the attribute requires validation context; otherwise, false.</returns>
    public virtual bool requiresvalidationcontext { get; }

    /// <summary>applies formatting to an error message, based on the data field where the error occurred.</summary>
    /// <param name="name">the name to include in the formatted message.</param>
    /// <returns>an instance of the formatted error message.</returns>
    public virtual string formaterrormessage(string name);

    /// <summary>checks whether the specified value is valid with respect to the current validation attribute.</summary>
    /// <param name="value">the value to validate.</param>
    /// <param name="validationcontext">the context information about the validation operation.</param>
    /// <returns>an instance of the <see cref="system.componentmodel.dataannotations.validationresult"></see> class.</returns>
    public validationresult getvalidationresult(
      object value,
      validationcontext validationcontext);

    /// <summary>determines whether the specified value of the object is valid.</summary>
    /// <param name="value">the value of the object to validate.</param>
    /// <returns>true if the specified value is valid; otherwise, false.</returns>
    public virtual bool isvalid(object value);

    /// <summary>validates the specified value with respect to the current validation attribute.</summary>
    /// <param name="value">the value to validate.</param>
    /// <param name="validationcontext">the context information about the validation operation.</param>
    /// <returns>an instance of the <see cref="system.componentmodel.dataannotations.validationresult"></see> class.</returns>
    protected virtual validationresult isvalid(
      object value,
      validationcontext validationcontext);

    /// <summary>validates the specified object.</summary>
    /// <param name="value">the object to validate.</param>
    /// <param name="validationcontext">the <see cref="t:system.componentmodel.dataannotations.validationcontext"></see> object that describes the context where the validation checks are performed. this parameter cannot be null.</param>
    /// <exception cref="t:system.componentmodel.dataannotations.validationexception">validation failed.</exception>
    public void validate(object value, validationcontext validationcontext);

    /// <summary>validates the specified object.</summary>
    /// <param name="value">the value of the object to validate.</param>
    /// <param name="name">the name to include in the error message.</param>
    /// <exception cref="t:system.componentmodel.dataannotations.validationexception"><paramref name="value">value</paramref> is not valid.</exception>
    public void validate(object value, string name);
  }

    public class userlogin
    {
        [required(errormessage = "用户名不能为空")]
        [stringlength(10,errormessage = "用户名长度不能超过10位")]
        public string username { get; set; }
          
        //[required(errormessage = "密码不能为空")]
        [stringlength(6,errormessage = "密码长度不能超过6位")]
        public string password { get; set; }
    }

    public class formcontroller : controller
    {
        public iactionresult index()
        {
            return view(new userlogin());
        }

        public iactionresult postdata(userlogin login)
        {
            return content(modelstate.isvalid?"数据有效":"数据无效");
        }
    }

@model lesson2.models.userlogin
@{
    layout = null;
}

<!doctype html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>index</title>
    <script src="~/lib/jquery/dist/jquery.min.js"></script>
    <script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
    <script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>
</head>
<body>
    <form asp-action="postdata" method="post">
        <table>
            <tr>
                <td>用户名</td>
                <td>@html.textboxfor(m => m.username)</td>
                <td>@html.validationmessagefor(m => m.username)</td>
            </tr>
            <tr>
                <td>密码</td>
                <td>@html.passwordfor(m => m.password)</td>
                <td>@html.validationmessagefor(m => m.password)</td>
            </tr>
            <tr>
                <td></td>
                <td><input type="submit" value="登录" /></td>
                <td></td>
            </tr>
        </table>
    </form>
</body>
</html>

    app.usemvc(routes =>
    {
        routes.maproute(
            name: "default",
            template: "{controller=home}/{action=index}/{id?}");

        routes.maproute(
            name: "admin_default",
            template: "admin/{controller=home}/{action=index}/{id?}");
    });

    [route("admin/form")]
    public class formcontroller : controller
    {
        [route("index")]
        public iactionresult index()
        {
            return view(new userlogin());
        }

        public iactionresult postdata(userlogin login)
        {
            return content(modelstate.isvalid?"数据有效":"数据无效");
        }
    }

    public iactionresult index([fromroute] int? id)
    {
        return view();
    }

<project sdk="microsoft.net.sdk.web">

  <propertygroup>
    <targetframework>netcoreapp2.1</targetframework>
    <!-- 关闭视图预编译 -->
    <mvcrazorcompileonpublish>false</mvcrazorcompileonpublish>
  </propertygroup>

  <itemgroup>
    <packagereference include="microsoft.aspnetcore.app" />
    <packagereference include="microsoft.aspnetcore.razor.design" version="2.1.2" privateassets="all" />
    <packagereference include="microsoft.visualstudio.web.codegeneration.design" version="2.1.1" />
  </itemgroup>

</project>

<!-- 依赖框架的部署 (fdd) -->
<propertygroup>
  <targetframework>netcoreapp2.2</targetframework>
  <runtimeidentifier>win7-x64</runtimeidentifier>
  <selfcontained>false</selfcontained>
  <istransformwebconfigdisabled>true</istransformwebconfigdisabled>
</propertygroup>
<!-- 独立部署 (scd) -->
<propertygroup>
  <targetframework>netcoreapp2.2</targetframework>
  <runtimeidentifier>win7-x64</runtimeidentifier>
  <istransformwebconfigdisabled>true</istransformwebconfigdisabled>
</propertygroup>
    ...
    ...
    ...