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Net-Framework/WPF/Dialogs WPF: Open a Window at a position 13.01.2019 74 How do you set a WPF Window so that it is placed directly at the position or place of the mouse when opening? Solution: Net-Framework/WPF/Code-Samples WPF: Drag Drop Example 12.01.2019 116 WPF: Drag Drop Beispiel The following C # Code example shows the simple creation of a drag and drop function in WPF In this example, a rectangular planning field (WPF button) is drawn into a planning calendar (WPF Border) With a WPF drag-and-drop ope Net-Framework/WPF/Controls-Elements WPF: Read SelectedItem from DataGrid with Dynamic As Anonymous Type 31.12.2018 113 WPF: Read SelectedItem from DataGrid with Dynamic As Anonymous Type How to evaluate an Colo Net-Framework/WPF/Controls-Elements WPF: Elements too wide, edge Cut off 31.12.2018 75 WPF: Elements too wide, edge Cut off Problem: The input fields are not displayed correctly For at any reason, the right edge is always cut off Net-Framework/WPF/Dialogs WPF: Selection enter open and well take over with Button Elements 29.12.2018 114 WPF: Selection enter open and well take over with Button Elements This example shows that we open a WPF element a selection as a window and a selection is made from it The selection then adds a button to the inside of the first caller Net-Framework/WPF/Controls-Elements Solved: System.InvalidCastException HResult 0x80004002 in Select DataGrid 29.12.2018 120 Solved: System InvalidCastException HResult=0x80004002 Error message Net-Framework/WPF/Controls-Elements WPF: Combobox Selected Value 28.12.2018 135 WPF: Combobox Selected Value ID ermitteln Task: How to determine the selected Wert in WPF at a Combobox Net-Framework/WPF/Entity-Framework How to add a database functionally to a WPF application 16.11.2018 184 How to add a database functionally to a WPF application If you already have a WPF application with a local database, then you go in the Solution Explorer Add data model connection At Project-> Add-> New Item Net-Framework/Visual-Studio/Error Gelöst: One or more projects in the solution were not loaded correctly 16.11.2018 198 Gelöst: One or more projects in the solution were not loaded correctly Die Fehlermeldung dass das Projekt nicht richtig geladen werden konnte, wenn man ein Projekt über eine Solution sln Datei öffnet und das Projekt zuvor verschoben wurde Net-Framework/WinForms/Code Code: Resize Photo with Windows, Resize 14.11.2018 166 Code: Resize Photo with Windows, Resize Task: A small easy Windows C # code to downsize a photo or image to a smaller size Net-Framework/WinForms/Errors Solved: Thread must be set to Single Thread Apartment (STA) mode 14.11.2018 165 Solved: Thread must be set to Single Thread Apartment (STA) mode Problem: When using the Clipboard clipboard in an Addin Net-Framework/WPF/Controls-Elements WPF Datagrid: Column is not displayed 13.11.2018 180 WPF Datagrid: Column is not displayed Problem: Net-Framework/Visual-Studio/Error Resolved: Error message when installing Windows software, untrusted certificate 12.11.2018 147 Resolved: Error message when installing Windows software, untrusted certificate Problem: When installing a Windows application, the following message appears saying that custom functions can not be used because of a certificate Net-Framework/ASP_dot_Net-Core/Errors Installation of .NET Core 2.1 on a web server 07.11.2018 217 Installation of NET Core 2 1 on a web server Problem: If you upload a new web page with Asp Net Core 2 1 to a web server and try to start it, then first an error message 502 5 appears on the web server Net-Framework/Visual-Studio/Error Asp.Net Core 2.1 Error: Publish prints too many files 07.11.2018 157 Asp Net Core 2 1 Error: Publish prints too many files Problem: If you output an Asp Net Core 2 1 Web application with Publish, project files and all library runtime files will be output Subject: Upgrade Windows 10 update and Visual Studio 2017 to 2018 Q3 De&# Net-Framework/ASP_dot_Net-Core/Code-Example/Razor Asp.Net Razor: Query website URL Path 06.11.2018 145 How to query in Asp Net when calling a page where you are? Task: I would like to call the website page: Edit, that some HTML sections such as advertising are not displayed The Asp Net MVC Core Website Edit is saved as View: E Net-Framework/Visual-Studio/Error Solved: Project file is incomplete. Expected imports are missing. .Net Core 2 Project 06.11.2018 121 Solved: Project file is incomplete Expected imports are missing Net Core 2 Project When opening the Project Solution sln file with a core project, Windows 10 reports a fatal error The project file will not load at all As such, the project or the project Net-Framework/c_hash_/Basics C #: Converting a 2D Object Array to 2D String Array 30.10.2018 143 C #: Converting a 2D Object Array to 2D String Array Task: This code example in C # shows how to transform a two-dimensional object [,] array into a 2-dimensional string [,] array T Net-Framework/Controls/COM-ActiveX Create C# COM Control for Office 10.10.2018 560 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 402 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 2146 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 274 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 2490 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 1188 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 345 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 336 Error: The underlying provider failed on Open EntityFramework Entity Framework Error message: Net-Framework/WPF/Code-Samples Send emails with WPF 17.08.2018 240 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 273 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 222 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 275 Linq: Select Fields in Query Error: object does not contain a definition for fieldname