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Net-Framework/c_hash_/Error-Messages Error: Comparison row==System.DBNull DBNull is a type, which is not valid in the given context 06.10.2021 559 Error: Comparison row ==System DBNull DBNull is a type, which is not valid in the given context Fehler: Net-Framework/c_hash_/Error-Messages Solved: Cannot implicitly convert type int? to int. 24.03.2021 2992 Error message: Cannot implicitly convert type 'int?' to 'int' An explicit conversion exists (are you missing a cast?) In c# Error Net-Framework/c_hash_/Code-Examples Run Async Task in Sync Method 01.11.2019 1500 Async Task in Sync Methode How to perform an asynchronous method within a synchronous method in C- Problem: here Async call in Sync event Async await ApplicationData Current LocalSettings Value Net-Framework/c_hash_/Basics C #: Converting a 2D Object Array to 2D String Array 30.10.2018 1864 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/c_hash_/Basics Asp.Net C #: Optional parameters in method 13.03.2018 1902 I want to call a method in C #, which I temporarily fill with an optional parameter Solution - an optional parameter in a method is achieved by defining a parameter with the = actual equals sign and a value Net-Framework/c_hash_/Basics Asp.Net C #: Bool zero to bool 12.03.2018 4696 How to Convert a Null Nullable Bool to a Bool In my application, a bit field with the values NULL, 0, or 1 is executed in the SQL Server database Under the connection in Asp Net Core MVC C # is the table field as Bool? Nullable defined W Net-Framework/c_hash_/Error-Messages C #: The return type of async method must be void, Task or Task T 05.03.2018 9699 C #: The return type of async method must be void, Task or Task A common error message in C # when developing asynchronous methods is the message The return type of an async method must be void, Task or Ta Net-Framework/c_hash_/Code-Examples C #: find value in a dictionary and compare 16.01.2018 2165 How do you find a value in a dictionary in C #? A dictionary consists of key-value elements, that is, there are always pair entries with a key and a value such as Settings are for example a dictionary The dictionary offers as a simple Net-Framework/c_hash_/Error-Messages C # Error: Control can not fall out of switch from final case label default 03.11.2017 22367 C # Error: Control can not fall out of switch from final case label ('default:') NavigationV Net-Framework/c_hash_/Basics C#: Add Item to Array or List 02.01.2017 5733 C #: Add Item to Array or List Task: How to add an item to an array in a C # application? Solution: Instead of string [] array_example you normally use List arrList in c # A list corresponds to a one-dimensional array and can be extended with add a