/// <summary>/// 拍賣師控制類/// </summary>[NonController]public class AuctionController{}
常用特性
特性數(shù)據(jù)源
FromHeaderAttribute
請求頭數(shù)據(jù)
FromRouteAttribute
路由數(shù)據(jù)
FromBodyAttribute
請求體
FromFormAttribute
表單數(shù)據(jù)
FromQueryAttribute
查詢字符串
FromServicesAttribute
服務(wù)注冊
public IActionResult Say([FromForm]string name,[FromQuery]int age,[FromHeader] string salt,[FromBody] string content){return View();}
特性參數(shù)
通過特性修飾參數(shù)來影響綁定邏輯
靈活擴展
IActionResult
動作結(jié)果接口
具體實現(xiàn)
JsonResult：返回JSON結(jié)構(gòu)數(shù)據(jù)
RedirectResult：跳轉(zhuǎn)到新地址
FileResult：返回文件
ViewResult：返回視圖內(nèi)容
ContentResult：文本內(nèi)容
第三課 視圖與表單
數(shù)據(jù)傳遞
ViewData
ViewBag
tempData
Model
Session
Cache
ViewDataViewBag
鍵值對
動態(tài)類型
索引器
ViewData的封裝
支持任意類型
動態(tài)屬性
TempDataCacheSession
視圖級別
應(yīng)用程序級別
會話級別
只允許消費一次
服務(wù)器端保存
服務(wù)器端保存
可多次賦值
可設(shè)置有效期
鍵值對形式
鍵值對形式
鍵值對形式
Cache
與.NET Framework時代不同，一種全新實現(xiàn)
IMemoryCache接口
依賴注入方式獲取
IMemoryCache.Get/Set操作數(shù)據(jù)
[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; }}
ViewStart
以_ViewStart.cshtml命名，固定名稱，不能更換
一般放在視圖所在目錄的根目錄下
自動執(zhí)行，無需手工調(diào)用
不要再ViewStart中做大量的業(yè)務(wù)操作
ViewImport
以_ViewImport.cshtml命名，固定名稱，不能更換
只作引入操作
一般放在視圖所在目錄的根目錄下
自動執(zhí)行，無需手工調(diào)用
視圖中可以使用@using關(guān)鍵字引入所需命名空間
通過ViewImport做全局性的命名空間引入，減少在每個頁面中引入的工作量
第四課 數(shù)據(jù)驗證
數(shù)據(jù)驗證特性ValidationAttribute
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);}
