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Net-Framework/Controls/COM-ActiveX Create C# COM Control for Office 10.10.2018 46 Create COM Control for Office This description shows how to create a COM Control and then use it in Microsoft Office The COM Control is created in C # in Visual Studio The description contains the base code in C # for creating a COM control The COM Control is cr Net-Framework/WPF/Code-Samples Read text from PDF using iTextSharp 10.10.2018 59 Read text from PDF Under C # you can create a complete PDF reader with just a few lines of code For this you can integrate the Nuget Package iTextSharp small Windows program with iTextSharp in C # and WPF Net-Framework/ASP_dot_Net-Core/Angular/Errors Error AggregateException: The NPM start exited without the Angular CLI was listening for requests 03.09.2018 562 Error AggregateException: The NPM script start exited without the Angular CLI was listening for requests Th Net-Framework/ASP_dot_Net-Core/Angular Angular.js SPA app under Visual Studio and Asp.Net 03.09.2018 91 Angular js SPA app under Visual Studio and Asp Net How to create a simple Asp Net Core application with Angular js as frontend Net-Framework/ASP_dot_Net-Core/Errors Set upload of very large files in Asp.Net MVC Core 2. 24.08.2018 559 Set upload of very large files in Asp Net MVC Core 2 Problem: If you want to upload large files or videos with 200 MB or 1 5 GB in asp net core 2 1 Net-Framework/WPF/Error-Messages Error: A second operation started in this context before a previous asynchronous operation completed. 20.08.2018 269 Error: A second operation started in this context before a previous asynchronous operation completed Error: Net-Framework/WPF/Error-Messages Error: Can not implicitly convert type System.Threading.Tasks.Task long to long 20.08.2018 104 Error: Can not implicitly convert type 'System Threading Tasks Task ' to 'long' Not correct: Net-Framework/WPF/Entity-Framework Error: The underlying provider failed on Open.EntityFramework Entity Framework 20.08.2018 145 Error: The underlying provider failed on Open EntityFramework Entity Framework Error message: Net-Framework/WPF/Code-Samples Send emails with WPF 17.08.2018 96 Send emails with WPF With the following code sample you can easily send emails in WPF applications Net-Framework/ASP_dot_Net-Core/Project-Setup Expand Asp.Net Core Startup.cs with Environment Development 17.08.2018 103 Task: How can you build a case distinction between development state and runtime publish state in the Startup cs file in Asp Net Core project Net-Framework/ASP_dot_Net-Core/Data-Model/Linq Linq: Output to a variable list 16.08.2018 91 Linq: Output to a variable list How to pass the query results of a Linq query to a free list? Solution: with list and elements of type Object Net-Framework/ASP_dot_Net-Core/Data-Model/Linq Linq: Select Fields in Query 16.08.2018 117 Linq: Select Fields in Query Error: object does not contain a definition for fieldname Net-Framework/ASP_dot_Net-Core/Data-Model/Linq the type or namespace name dbAppData_Context does not exist 10.08.2018 75 Problem: Occurs when updating the data model when updating the model at the WPF with an EF Entity Framework connection to a SQL Server database, then it may be that the connection is taken over incorrectly as a data context Net-Framework/ASP_dot_Net-Core/Data-Model/Linq Delete record in Linq 10.08.2018 91 Delete record in Linq Code snippet: delete record call Net-Framework/ASP_dot_Net-Core/Data-Model/Linq Code snippet: Create Linq Select table from ID number fields 10.08.2018 80 Code snippet: Create Linq Select table from ID number fields call Net-Framework/WPF/HTML-Documents Evaluate Json in WPF 09.08.2018 112 Evaluate Json in WPF Task: I would like to evaluate a Json return from a website in WPF Net-Framework/ASP_dot_Net-Core/API Json error: A method was called at an unexpected time 09.08.2018 118 Json error: A method was called at an unexpected time Problem: When evaluating an Api interface which returns a pure value list, the error comes that the method was called at an unexpected time Solution: When evaluating Json re Net-Framework/ASP_dot_Net-Core/API StatusCode: 405, ReasonPhrase: Method Not Allowed 09.08.2018 179 StatusCode: 405, ReasonPhrase: "Method Not Allowed" Problem: when accessing an Api-Delete interface from WPF on Asp Net Core MVC, the response StatusCode 405 Net-Framework/WPF/HTML-Documents httpClient Error: There is no mapped character in the multi-byte codepage for the Unicode character. HRESULT: 0x80070459 08.08.2018 121 There is no mapped character in the multi-byte codepage for the Unicode character (Exception from HRESULT: 0x80070459) Problem: W Net-Framework/WPF How to create a database connection in WPF and connect to EF Entity Framework 02.08.2018 138 If you've added an existing database as a draft to the WPF project, the easiest way to create a data connection is to double-click the database under Visual Studio This opens the Server Explorer and integrates the SQL Server database as Datat Conn Net-Framework/ASP_dot_Net-Core/Errors/IIS-AspCore-Errors Kestrel web server Asp.Net Core 2 MVC hangs 11.05.2018 613 Status: Open After a few incorrect accesses to SQL Server, the internal web server of Asp Net Core MVC hangs The problem is that then the entire application hangs for all web clients You then have to restart the IIS web server and web application by stopping th Net-Framework/ASP_dot_Net-Core/Code-Example Browser in Asp.Net Core 2 with Wangkanai 23.04.2018 1147 How to determine the browser in Asp Net Core 2 and determine if it is a mobile device Net Framework, alt First of all, there is no query on the server in Asp Net Core as in Asp Net Framework In asp net MVC Net framework and Net-Framework/ASP_dot_Net/HTML HTML: Move the position of an element only up to a certain position 20.04.2018 286 How does one set it that an HTML element is only moved to a certain position when the browser moves the page? View browser In this example, the DIV area on a web page is only moved to the top of the window The element thus always remai Net-Framework/ASP_dot_Net-Core/Basics/Route Asp core redirect http to https and www. To directly domain host 19.04.2018 1584 Asp core redirect to and To directly domain host This article describes how to redirect the addresses from to in an Asp Net Core MVC project and additionally to move the domain from to domain com without redirects All elements such as the website and Net-Framework/ASP_dot_Net-Core/Errors/IIS-AspCore-Errors Asp Net Core MVC: Login failed for user IIS APPPOOL \ Readdy 19.04.2018 1660 Asp Net Core MVC: Login failed for user 'IIS APPPOOL Readdy' The following error message comes when you want to access an SQL Server in an Asp Net Core 2 MVC application -> An error occurred using the connection to database Status: solve Net-Framework/ASP_dot_Net-Core/Errors/IIS-AspCore-Errors Error message: An assembly specified in the application dependencies manifest was not found 18.04.2018 1462 Error message: An assembly specified in the application dependencies manifest deps json was not found Status: solved Following error in detail: Net-Framework/ASP_dot_Net-Core/Project-Setup Where to find the Asp.Net Core Project File 18.04.2018 295 In the Asp Net Core project file, the settings for the Asp Net Core application are set The file naming is with the ending csproj in the application like MeinAspProjekt csproj Many tutorials refer to the project file again and again in the xml structure Net-Framework/ASP_dot_Net-Core/Project-Setup Wo findet man die Asp.Net Core Projekt File 18.04.2018 306 in der Asp Net Core Projekt-Datei werden die Einstellungen zu der Asp Net Core Anwendung eingestellt Die Dateibenennung ist mit der endung csproj in der Anwendung wie MeinAspProjekt csproj In vielen Tutorials wird immer wieder auf die Projektdatei verwiesen und in de Net-Framework/ASP_dot_Net-Core/Errors/IIS-AspCore-Errors Asp Core Error: Could not create stdoutLogFile 18.04.2018 3346 Where are the detail errors of the Asp Net Core web application written? When creating an Asp Net core application, errors are written by the IIS Internet Information Server in the Windows Event Viewer and internal errors of the Asp Net Core application are written int Net-Framework/ASP_dot_Net-Core/Errors/IIS-AspCore-Errors Finding bugs in Asp.Net Core 2 MVC applications. 18.04.2018 592 Where to Find the Error Description, Error Log Files for Asp Net Core Applications on Windows Server 2016 with IIS 10, 8 5 When I publish my application to the Windows IIS Internet Information Server, the error Error 502 5 Process Failure appears