محمد سعید محمد سعید
نظرات مطالب
ایجاد سرویس چندلایه‎ی WCF با Entity Framework در قالب پروژه - 7
با سلام؛ قبل از هر چیز ممنون از آموزش خوبتون. یک سوال در رابطه با قسمت اول این آموزش داشتم. من دقیقا با آموزش شما پیش رفتم و در قسمت هفتم آموزشتون در اجرای پروژه دچار مشکل شدم و در مرورگرم با خطای زیر مواجه شدم:
HTTP Error 403.14 - Forbidden
The Web server is configured to not list the contents of this directory.
Most likely causes:

    A default document is not configured for the requested URL, and directory browsing is not enabled on the server.

Things you can try:

    If you do not want to enable directory browsing, ensure that a default document is configured and that the file exists.
    Enable directory browsing using IIS Manager.
        Open IIS Manager.
        In the Features view, double-click Directory Browsing.
        On the Directory Browsing page, in the Actions pane, click Enable.
    Verify that the configuration/system.webServer/directoryBrowse@enabled attribute is set to true in the site or application configuration file.

Detailed Error Information:
Module DirectoryListingModule
Notification ExecuteRequestHandler
Handler StaticFile
Error Code 0x00000000
Requested URL http://localhost:80/3724/
Physical Path C:\inetpub\wwwroot\3724\
Logon Method Anonymous
Logon User Anonymous
‫۹ سال و ۷ ماه قبل، پنجشنبه ۲۱ اسفند ۱۳۹۳، ساعت ۱۶:۲۵
علیرضا آرانی علیرضا آرانی
اشتراک‌ها
9 نکته مفید برای استقرار امن و نگهداری تمیز اپلیکیشن های بزرگ

An application’s code base is a living entity. It keeps growing, changing, and adapting. There’s always a new feature to add, more bugs to solve, and new bugs that are created as a result. As the teams grow, the code changes more often and there are ever more features, more issues, and more bugs. Thorough manual testing becomes impossible the bigger your application gets and as you ship more frequently. 

9 نکته مفید برای استقرار امن و نگهداری تمیز اپلیکیشن های بزرگ
‫۱ سال و ۸ ماه قبل، سه‌شنبه ۲۷ دی ۱۴۰۱، ساعت ۱۷:۲۹
س علیزاده س علیزاده
اشتراک‌ها
مروری بر ASP.NET Core View Component

Partial Views and Child Actions are one the most used features of ASP.NET MVC. Partial Views provides us a way to create a reusable component that can be used in multiple Views. There are Actions which can be marked as Child Actions and these cannot be invoked via URL but inside views or partial views. Child Actions are no more available with ASP.NET Core. View Components are new way to implement this feature in ASP.NET Core. 

مروری بر ASP.NET Core View Component
‫۷ سال و ۷ ماه قبل، جمعه ۲۰ اسفند ۱۳۹۵، ساعت ۲۳:۱۶
وحید محمدطاهری وحید محمدطاهری
اشتراک‌ها
3 Visual Studio 2019 Preview منتشر شد
3 Visual Studio 2019 Preview منتشر شد
‫۵ سال و ۷ ماه قبل، سه‌شنبه ۷ اسفند ۱۳۹۷، ساعت ۰۴:۰۶
محمد جواد ابراهیمی محمد جواد ابراهیمی
اشتراک‌ها
روش های مقایسه اشیاء با null

Check

Code 

Description

Is Null 
if(variable is null) return true;
  • 🙂 This syntax supports static analysis such that later code will know whether variable is null or not.
  • 🙁 Doesn’t produce a warning even when comparing against a non-nullable value type making the code to check pointless.
  • 😐 Requires C# 7.0 because it leverages type pattern matching.
Is Not Null 
if(variable is { }) return false
  • 🙂 This syntax supports static analysis such that later code will know whether variable is null or not.
  • 😐 Requires C# 8.0 since this is the method for checking for not null using property pattern matching.
Is Not Null 
if(variable is object) return false
  • 🙂 Triggers a warning when comparing a non-nullable value type which could never be null
  • 🙂 This syntax works with C# 8.0’s static analysis so later code will know that variable has been checked for null.
  • Checks if the value not null by testing whether it is of type object.  (Relies on the fact that null values are not of type object.)
Is Null 
if(variable == null) return true
  • 🙂 The only way to check for null prior to C# 7.0.
  • 🙁 However, because the equality operator can be overridden, this has the (remote) possibility of failing or introducing a performance issue.
Is Not Null 
if(variable != null) return false
  • 🙂 The only way to check for not null prior to C# 7.0.
  • 😐 Since the not-equal operator can be overridden, this has the (remote) possibility of failing or introducing a performance issue. 
روش های مقایسه اشیاء با null
‫۴ سال و ۹ ماه قبل، یکشنبه ۱۵ دی ۱۳۹۸، ساعت ۱۴:۴۸