منظورتون Cache کوکی هست. اگر نقشهای کاربر تغییر کنه، اِعمال بلافاصلهی تغییرات در حین گشت و گذار وی در سایت به چه شکل هست؟
نظرات مطالب
public void Configure(IApplicationBuilder app) { app.Run(async context => { throw new Exception("Generic Error"); await context.Response.WriteAsync("Hello DNT!"); }); }
public void Configure(IApplicationBuilder app) { app.UseDeveloperExceptionPage();
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); }
if(env.IsDevelopment()){ } if(env.IsProduction()){ } if(env.IsStaging()){ }
public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } else { app.UseExceptionHandler(errorHandlingPath: "/MyControllerName/SomeActionMethodName"); }
var feature = HttpContext.Features.Get<IExceptionHandlerFeature>(); var error = feature?.Error;
public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { app.UseStatusCodePages(); app.UseDeveloperExceptionPage(); } else { app.UseExceptionHandler(errorHandlingPath: "/MyControllerName/SomeActionMethodName"); } }
app.UseStatusCodePagesWithReExecute("/MyControllerName/SomeActionMethodName/{0}");
app.Use(async (httpContext, next) => { //Get username var username = httpContext.User.Identity.IsAuthenticated ? httpContext.User.Identity.Name : "anonymous"; using (LogContext.PushProperty("User", username)) { //Get remote IP address var ip = httpContext.Connection.RemoteIpAddress.ToString(); using (LogContext.PushProperty("IP", !String.IsNullOrWhiteSpace(ip) ? ip : "unknown")) { await next.Invoke(); } } });
<script src="/path/to/jquery.cookie.js"></script>
$.cookie('the_cookie', 'the_value');
$.cookie('the_cookie'); // => "the_value"
<script type="text/javascript"> $(function () { $('#write').click(function () { $.cookie('data', '{"iri":"Iran","usa":"United States"}', { expires: 365, json: true }); alert('Writed'); }); $('#show').click(function () { var obj = jQuery.parseJSON($.cookie('data')); alert(obj.iri); }); $('#remove').click(function () { $.removeCookie('data'); }); }) </script>
<body> <a href="#" id="write">Write</a> <br /> <a href="#" id="show">Show</a> <br /> <a href="#" id="remove">Remove</a> </body>
$('#write').click(function () { $.cookie('data', '{"iri":"Iran","usa":"United States"}', { expires: 365, json: true }); alert('Writed'); });
$('#show').click(function () { var obj = jQuery.parseJSON($.cookie('data')); alert(obj.iri);
$('#remove').click(function () { $.removeCookie('data'); });
$.cookie('data', JSON.stringify(jsonobject), { expires: 365, json: true });
public async Task<IActionResult> UploadImage(IFormFile file, Guid id)
public class UploadImageViewModel { public IFormFile file {get;set;} public Guid id {get;set;} } public async Task<IActionResult> UploadImage(UploadImageViewModel model) {
در ادامه بررسی تصویر امنیتی سایت مواردی که باید پیاده سازی شود برای مورد اول میتوان کلاس زیر را در نظر گرفت که متدهایی برای تولید اعداد بصورت تصادفی در بین بازه معرفی شده را بازگشت میدهد:
// RandomGenerator.cs using System; using System.Security.Cryptography; namespace PersianCaptchaHandler { public class RandomGenerator { private static readonly byte[] Randb = new byte[4]; private static readonly RNGCryptoServiceProvider Rand = new RNGCryptoServiceProvider(); public static int Next() { Rand.GetBytes(Randb); var value = BitConverter.ToInt32(Randb, 0); if (value < 0) value = -value; return value; } public static int Next(int max) { Rand.GetBytes(Randb); var value = BitConverter.ToInt32(Randb, 0); value = value%(max + 1); if (value < 0) value = -value; return value; } public static int Next(int min, int max) { var value = Next(max - min) + min; return value; } } }
// NumberToString.cs namespace PersianCaptchaHandler { public class NumberToString { #region Fields private static readonly string[] Yakan = new[] { "صفر", "یک", "دو", "سه", "چهار", "پنج", "شش", "هفت", "هشت", "نه" }; private static readonly string[] Dahgan = new[] { "", "", "بیست", "سی", "چهل", "پنجاه", "شصت", "هفتاد", "هشتاد", "نود" }; private static readonly string[] Dahyek = new [] { "ده", "یازده", "دوازده", "سیزده", "چهارده", "پانزده", "شانزده", "هفده", "هجده", "نوزده" }; private static readonly string[] Sadgan = new [] { "", "یکصد", "دوصد", "سیصد", "چهارصد", "پانصد", "ششصد", "هفتصد", "هشتصد", "نهصد" }; private static readonly string[] Basex = new [] { "", "هزار", "میلیون", "میلیارد", "تریلیون" }; #endregion private static string Getnum3(int num3) { var s = ""; var d12 = num3 % 100; var d3 = num3 / 100; if (d3 != 0) s = Sadgan[d3] + " و "; if ((d12 >= 10) && (d12 <= 19)) { s = s + Dahyek[d12 - 10]; } else { var d2 = d12 / 10; if (d2 != 0) s = s + Dahgan[d2] + " و "; var d1 = d12 % 10; if (d1 != 0) s = s + Yakan[d1] + " و "; s = s.Substring(0, s.Length - 3); } return s; } public static string ConvertIntNumberToFarsiAlphabatic(string snum) { var stotal = ""; if (snum == "0") return Yakan[0]; snum = snum.PadLeft(((snum.Length - 1) / 3 + 1) * 3, '0'); var l = snum.Length / 3 - 1; for (var i = 0; i <= l; i++) { var b = int.Parse(snum.Substring(i * 3, 3)); if (b != 0) stotal = stotal + Getnum3(b) + " " + Basex[l - i] + " و "; } stotal = stotal.Substring(0, stotal.Length - 3); return stotal; } } }
using System; using System.IO; using System.Security.Cryptography; using System.Text; namespace PersianCaptchaHandler { public class Encryptor { #region constraints private static string Password { get { return "Mehdi"; } } private static string Salt { get { return "Payervand"; } } #endregion public static string Encrypt(string clearText) { // Turn text to bytes var clearBytes = Encoding.Unicode.GetBytes(clearText); var pdb = new PasswordDeriveBytes(Password, Encoding.Unicode.GetBytes(Salt)); var ms = new MemoryStream(); var alg = Rijndael.Create(); alg.Key = pdb.GetBytes(32); alg.IV = pdb.GetBytes(16); var cs = new CryptoStream(ms, alg.CreateEncryptor(), CryptoStreamMode.Write); cs.Write(clearBytes, 0, clearBytes.Length); cs.Close(); var encryptedData = ms.ToArray(); return Convert.ToBase64String(encryptedData); } public static string Decrypt(string cipherText) { // Convert text to byte var cipherBytes = Convert.FromBase64String(cipherText); var pdb = new PasswordDeriveBytes(Password, Encoding.Unicode.GetBytes(Salt)); var ms = new MemoryStream(); var alg = Rijndael.Create(); alg.Key = pdb.GetBytes(32); alg.IV = pdb.GetBytes(16); var cs = new CryptoStream(ms, alg.CreateDecryptor(), CryptoStreamMode.Write); cs.Write(cipherBytes, 0, cipherBytes.Length); cs.Close(); var decryptedData = ms.ToArray(); return Encoding.Unicode.GetString(decryptedData); } } }
// Utils.cs using System.Text.RegularExpressions; namespace PersianCaptchaHandler { public class Utils { private static readonly Regex NumberMatch = new Regex(@"^([0-9]*|\d*\.\d{1}?\d*)$", RegexOptions.Compiled); public static bool IsNumber(string number2Match) { return NumberMatch.IsMatch(number2Match); } } }
<add verb="GET" path="/captcha/" type="PersianCaptchaHandler.CaptchaHandler, PersianCaptchaHandler, Version=1.0.0.0, Culture=neutral" />
<!-- ASPX --> <dl> <dt>تصویر امنیتی</dt> <dd> <asp:Image ID="imgCaptchaText" runat="server" AlternateText="CaptchaImage" /> <asp:HiddenField ID="hfCaptchaText" runat="server" /> <asp:ImageButton ID="btnRefreshCaptcha" runat="server" ImageUrl="/img/refresh.png" OnClick="btnRefreshCaptcha_Click" /> <br /> <asp:TextBox ID="txtCaptcha" runat="server" AutoCompleteType="Disabled"></asp:TextBox> </dd> <dd> <asp:Button ID="btnSubmit" runat="server" Text="ثبت" OnClick="btnSubmit_Click" /> </dd> </dl> <asp:Label ID="lblMessage" runat="server"></asp:Label>
protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) SetCaptcha(); } private void SetCaptcha() { lblMessage.Text = txtCaptcha.Text = string.Empty; var newNumber = RandomGenerator.Next(100, 999) ; var farsiAlphabatic = NumberToString.ConvertIntNumberToFarsiAlphabatic(newNumber.ToString()); hfCaptchaText.Value = HttpUtility .UrlEncode( Encryptor.Encrypt( farsiAlphabatic ) ); txtCaptcha.Text = string.Empty; imgCaptchaText.ImageUrl = "/captcha/?text=" + hfCaptchaText.Value; }
private string GetCaptcha() { var farsiAlphabatic = NumberToString.ConvertIntNumberToFarsiAlphabatic(txtCaptcha.Text); var encryptedString = HttpUtility .UrlEncode( Encryptor.Encrypt( farsiAlphabatic ) ); return encryptedString; } private bool ValidateUserInputForLogin() { if (!Utils.IsNumber(txtCaptcha.Text)) { lblMessage.Text = "تصویر امنیتی را بطور صحیح وارد نکرده اید"; return false; } var strGetCaptcha = GetCaptcha(); var strDecodedVAlue = hfCaptchaText.Value; if (strDecodedVAlue != strGetCaptcha) { lblMessage.Text = "کلمه امنیتی اشتباه است"; SetCaptcha(); return false; } return true; } protected void btnSubmit_Click(object sender, EventArgs e) { if (!ValidateUserInputForLogin()) return; lblMessage.Text = "کلمه امنیتی درست است"; } protected void btnRefreshCaptcha_Click(object sender, ImageClickEventArgs e) { SetCaptcha(); }
public async Task<string> SaveAllChangesAsync(bool invalidateCacheDependencies = true, Guid? auditUserId = null) { try { if (auditUserId.HasValue) AuditFields(auditUserId.Value); await SaveChangesAsync(); if (!invalidateCacheDependencies) return string.Empty; var changedEntityNames = GetChangedEntityNames(); new EFCacheServiceProvider().InvalidateCacheDependencies(changedEntityNames); } catch (DbUpdateConcurrencyException ex) { Elmah.ErrorSignal.FromCurrentContext().Raise(ex); return ConcurrencyMessage; } return string.Empty; }
using System.IO; using System.Web.Mvc; namespace MVC4Basic.Controllers { public class HomeController : Controller { public ActionResult Index() { return View(); } const int AMonth = 30 * 86400; [OutputCache(Duration = AMonth, VaryByParam = "name")] public ActionResult GetImage(string name) { name = Path.GetFileName(name); var path = Server.MapPath(string.Format("~/app_data/images/{0}", name)); var content = System.IO.File.ReadAllBytes(path); return File(content, "image/png", name); } } }
<img src="@Url.Action("GetImage","Home", new { name = "test.png"})"/>
Remote Address:127.0.0.1:5656 Request URL:http://localhost:10419/Home/GetImage?name=test.png Request Method:GET Status Code:200 OK Response Headers Cache-Control:public, max-age=2591916 Expires:Sat, 31 May 2014 12:45:55 GMT Last-Modified:Thu, 01 May 2014 12:45:55 GMT
Remote Address:127.0.0.1:5656 Request URL:http://localhost:10419/Home/GetImage?name=test.png Request Method:GET Status Code:304 Not Modified Request Headers If-Modified-Since:Thu, 01 May 2014 12:45:55 GMT
Remote Address:127.0.0.1:5656 Request URL:http://localhost:10419/Home/GetImage?name=test.png Request Method:GET Status Code:200 OK (from cache)
Remote Address:127.0.0.1:5656 Request URL:http://localhost:10419/Home/GetImage?name=test.png Request Method:GET Status Code:200 OK Request Headers If-Modified-Since:Thu, 01 May 2014 12:45:55 GMT
using System; using System.IO; using System.Net; using System.Web.Mvc; namespace MVC4Basic.Controllers { public class HomeController : Controller { public ActionResult Index() { return View(); } const int AMonth = 30 * 86400; [OutputCache(Duration = AMonth, VaryByParam = "name")] public ActionResult GetImage(string name) { name = Path.GetFileName(name); var path = Server.MapPath(string.Format("~/app_data/images/{0}", name)); var lastWriteTime = System.IO.File.GetLastWriteTime(path); this.Response.Cache.SetLastModified(lastWriteTime.ToUniversalTime()); var header = this.Request.Headers["If-Modified-Since"]; if (!string.IsNullOrWhiteSpace(header)) { DateTime isModifiedSince; if (DateTime.TryParse(header, out isModifiedSince) && isModifiedSince > lastWriteTime) { return new HttpStatusCodeResult(HttpStatusCode.NotModified); } } var content = System.IO.File.ReadAllBytes(path); return File(content, "image/png", name); } } }
Remote Address:127.0.0.1:5656 Request URL:http://localhost:10419/Home/GetImage?name=test.png Request Method:GET Status Code:304 Not Modified Request Headers If-Modified-Since:Thu, 01 May 2014 13:43:32 GMT
[AttributeUsage(AttributeTargets.Method, AllowMultiple = false)] public sealed class SetIfModifiedSinceAttribute : ActionFilterAttribute { public string Parameter { set; get; } public string BasePath { set; get; } public override void OnActionExecuting(ActionExecutingContext filterContext) { var response = filterContext.RequestContext.HttpContext.Response; var request = filterContext.RequestContext.HttpContext.Request; var path = getPath(filterContext); if (string.IsNullOrWhiteSpace(path)) { response.StatusCode = (int)HttpStatusCode.NotFound; filterContext.Result = new EmptyResult(); return; } var lastWriteTime = File.GetLastWriteTime(path); response.Cache.SetLastModified(lastWriteTime.ToUniversalTime()); var header = request.Headers["If-Modified-Since"]; if (string.IsNullOrWhiteSpace(header)) return; DateTime isModifiedSince; if (DateTime.TryParse(header, out isModifiedSince) && isModifiedSince > lastWriteTime) { response.StatusCode = (int)HttpStatusCode.NotModified; response.SuppressContent = true; filterContext.Result = new EmptyResult(); } } string getPath(ActionExecutingContext filterContext) { if (!filterContext.ActionParameters.ContainsKey(Parameter)) return string.Empty; var name = filterContext.ActionParameters[Parameter] as string; if (string.IsNullOrWhiteSpace(name)) return string.Empty; var path = Path.GetFileName(name); path = filterContext.HttpContext.Server.MapPath(string.Format("{0}/{1}", BasePath, path)); return !File.Exists(path) ? string.Empty : path; } }
[SetIfModifiedSince(Parameter = "name", BasePath = "~/app_data/images/")] [OutputCache(Duration = AMonth, VaryByParam = "name")] public ActionResult GetImage(string name) { name = Path.GetFileName(name); var path = Server.MapPath(string.Format("~/app_data/images/{0}", name)); var content = System.IO.File.ReadAllBytes(path); return File(content, "image/png", name); }
>ng g m CustomValidators -m app.module --routing
>ng g c CustomValidators/user-register
>ng g cl CustomValidators/user
export class User { constructor( public username: string = "", public email: string = "", public password: string = "", public confirmPassword: string = "" ) {} }
>ng g d CustomValidators/EmailValidator -m custom-validators.module
import { Directive } from "@angular/core"; import { AbstractControl, NG_VALIDATORS, Validator } from "@angular/forms"; @Directive({ selector: "[appEmailValidator][formControlName],[appEmailValidator][formControl],[appEmailValidator][ngModel]", providers: [ { provide: NG_VALIDATORS, useExisting: EmailValidatorDirective, multi: true } ] }) export class EmailValidatorDirective implements Validator { validate(element: AbstractControl): { [key: string]: any } { const emailRegex = /\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/; const valid = emailRegex.test(element.value); return valid ? null : { appEmailValidator: true }; } }
<input #email="ngModel" required appEmailValidator type="text" class="form-control" name="email" [(ngModel)]="model.email">
selector: "[appEmailValidator][formControlName],[appEmailValidator][formControl],[appEmailValidator][ngModel]",
"apps": [ { // ... "prefix": "app",
selector: "[appEmailValidator]"
providers: [ { provide: NG_VALIDATORS, useExisting: EmailValidatorDirective, multi: true }
export class EmailValidatorDirective implements Validator {
validate(element: AbstractControl): { [key: string]: any }
validate(element: AbstractControl): { [key: string]: any } { const emailRegex = /\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/; const valid = emailRegex.test(element.value); return valid ? null : { appEmailValidator: true }; }
<input #email="ngModel" required appEmailValidator type="text" class="form-control" name="email" [(ngModel)]="model.email">
{ required:true }
{ minlength : { requiredLength : 3, actualLength : 1 } }
{ appEmailValidator: true }
<div class="alert alert-danger" *ngIf="email.errors.appEmailValidator"> The entered email is not valid. </div>
public password: string = "", public confirmPassword: string = ""
>ng g d CustomValidators/EqualValidator -m custom-validators.module
import { Directive, Attribute } from "@angular/core"; import { Validator, AbstractControl, NG_VALIDATORS } from "@angular/forms"; @Directive({ selector: "[appValidateEqual][formControlName],[appValidateEqual][formControl],[appValidateEqual][ngModel]", providers: [ { provide: NG_VALIDATORS, useExisting: EqualValidatorDirective, multi: true } ] }) export class EqualValidatorDirective implements Validator { constructor(@Attribute("compare-to") public compareToControl: string) {} validate(element: AbstractControl): { [key: string]: any } { const selfValue = element.value; const otherControl = element.root.get(this.compareToControl); console.log("EqualValidatorDirective", { thisControlValue: selfValue, otherControlValue: otherControl ? otherControl.value : null }); if (otherControl && selfValue !== otherControl.value) { return { appValidateEqual: true // Or a string such as 'Password mismatch.' or an abject. }; } if ( otherControl && otherControl.errors && selfValue === otherControl.value ) { delete otherControl.errors["appValidateEqual"]; if (!Object.keys(otherControl.errors).length) { otherControl.setErrors(null); } } return null; } }
export class EqualValidatorDirective implements Validator { constructor(@Attribute("compare-to") public compareToControl: string) {}
<input #password="ngModel" required type="password" class="form-control" appValidateEqual compare-to="confirmPassword" name="password" [(ngModel)]="model.password">
export class EqualValidatorDirective implements Validator { constructor(@Attribute("compare-to") public compareToControl: string) {} validate(element: AbstractControl): { [key: string]: any } { const selfValue = element.value; const otherControl = element.root.get(this.compareToControl); console.log("EqualValidatorDirective", { thisControlValue: selfValue, otherControlValue: otherControl ? otherControl.value : null });
if (otherControl && selfValue !== otherControl.value) { return { appValidateEqual: true // Or a string such as 'Password mismatch.' or an abject. }; }
if (otherControl && otherControl.errors && selfValue === otherControl.value) { delete otherControl.errors["appValidateEqual"]; if (!Object.keys(otherControl.errors).length) { otherControl.setErrors(null); } } return null;
import { NgForm } from "@angular/forms"; import { User } from "./../user"; import { Component, OnInit } from "@angular/core"; @Component({ selector: "app-user-register", templateUrl: "./user-register.component.html", styleUrls: ["./user-register.component.css"] }) export class UserRegisterComponent implements OnInit { model = new User(); constructor() {} ngOnInit() {} submitForm(form: NgForm) { console.log(this.model); console.log(form.value); } }
<div class="container"> <h3>Registration Form</h3> <form #form="ngForm" (submit)="submitForm(form)" novalidate>
<div class="form-group" [class.has-error]="username.invalid && username.touched"> <label class="control-label">User Name</label> <input #username="ngModel" required maxlength="8" minlength="4" type="text" class="form-control" name="username" [(ngModel)]="model.username"> <div *ngIf="username.invalid && username.touched"> <div class="alert alert-info"> errors: {{ username.errors | json }} </div> <div class="alert alert-danger" *ngIf="username.errors.required"> username is required. </div> <div class="alert alert-danger" *ngIf="username.errors.minlength"> username should be minimum {{username.errors.minlength.requiredLength}} characters. </div> <div class="alert alert-danger" *ngIf="username.errors.maxlength"> username should be max {{username.errors.maxlength.requiredLength}} characters. </div> </div> </div>
<div class="form-group" [class.has-error]="email.invalid && email.touched"> <label class="control-label">Email</label> <input #email="ngModel" required appEmailValidator type="text" class="form-control" name="email" [(ngModel)]="model.email"> <div *ngIf="email.invalid && email.touched"> <div class="alert alert-info"> errors: {{ email.errors | json }} </div> <div class="alert alert-danger" *ngIf="email.errors.required"> email is required. </div> <div class="alert alert-danger" *ngIf="email.errors.appEmailValidator"> The entered email is not valid. </div> </div> </div>
<div class="form-group" [class.has-error]="password.invalid && password.touched"> <label class="control-label">Password</label> <input #password="ngModel" required type="password" class="form-control" appValidateEqual compare-to="confirmPassword" name="password" [(ngModel)]="model.password"> <div *ngIf="password.invalid && password.touched"> <div class="alert alert-info"> errors: {{ password.errors | json }} </div> <div class="alert alert-danger" *ngIf="password.errors.required"> password is required. </div> <div class="alert alert-danger" *ngIf="password.errors.appValidateEqual"> Password mismatch. Please complete the confirmPassword . </div> </div> </div> <div class="form-group" [class.has-error]="confirmPassword.invalid && confirmPassword.touched"> <label class="control-label">Retype password</label> <input #confirmPassword="ngModel" required type="password" class="form-control" appValidateEqual compare-to="password" name="confirmPassword" [(ngModel)]="model.confirmPassword"> <div *ngIf="confirmPassword.invalid && confirmPassword.touched"> <div class="alert alert-info"> errors: {{ confirmPassword.errors | json }} </div> <div class="alert alert-danger" *ngIf="confirmPassword.errors.required"> confirmPassword is required. </div> <div class="alert alert-danger" *ngIf="confirmPassword.errors.appValidateEqual"> Password mismatch. </div> </div> </div>
<button class="btn btn-primary" [disabled]="form.invalid" type="submit">Ok</button> </form> </div>
>npm install >ng build --watch
>dotnet restore >dotnet watch run
using System;
using System.Collections.Generic;
using System.Linq;
namespace testWinForms87
{
public class Data
{
public int id { get; set; }
public string name { get; set; }
}
class CLinqTests
{
public static int TestGetListMin1()
{
var lst = new List<Data>
{
new Data{ id=1, name="id1"},
new Data{ id=2, name="id2"},
new Data{ id=3, name="name3"}
};
return (from c in lst
where c.name.Contains("id")
select c.id).Min();
}
public static int TestGetListMin2()
{
var lst = new List<Data>();
return (from c in lst
where c.name.Contains("id")
select c.id).Min();
}
}
}
public static int TestGetListMin3()
{
var lst = new List<Data>();
var query = from c in lst
where c.name.Contains("id")
select c.id;
if (query.Any())
return query.Min();
else
return -1;
}
using System;
using System.Collections.Generic;
using System.Linq;
public static class LinqExtensions
{
public static T MinOrDefault<T>(this IEnumerable<T> source, T defaultValue)
{
if (source.Any<T>())
return source.Min<T>();
return defaultValue;
}
public static T MaxOrDefault<T>(this IEnumerable<T> source, T defaultValue)
{
if (source.Any<T>())
return source.Max<T>();
return defaultValue;
}
}
public static int TestGetListMin4()
{
var lst = new List<Data>();
return (from c in lst
where c.name.Contains("id")
select c.id).MinOrDefault(-1);
}