For this, I need an interface and maybe a container for resolving my instances. But how you do this in C++? In the same way. The difference is that where you “program to an interface” in C#, you “program to a base class” in C++. Additionally, you have extra tools in C++ that you do … Read more
For this, I need an interface and maybe a container for resolving my instances. But how you do this in C++? In the same way. The difference is that where you “program to an interface” in C#, you “program to a base class” in C++. Additionally, you have extra tools in C++ that you do … Read more
You’re not adding columns to your DataGridView Is it clear now why you get an exception? Add this line before you use columns to fix the error
Assuming you’re intending to use Windows Authentication to impersonate the service account, you have to set up Windows Authentication in both IIS and ASP.NET. In IIS, make sure that the Windows Authentication module is added and enabled. Also make sure your application pool is running under a domain account, not a local account. In ASP.NET … Read more
UPDATE Back in my naïve days, I suggested doing this manually (it was a simple solution to a simple question), however due to this becoming more and more popular, I’d recommend using the library CsvHelper that does all the safety checks, etc. CSV is way more complicated than what the question/answer suggests. Original Answer As you already … Read more
Well, the error is pretty clear, no? You are trying to connect to your SQL Server with user “xyz/ASPNET” – that’s the account your ASP.NET app is running under. This account is not allowed to connect to SQL Server – either create a login on SQL Server for that account, or then specify another valid … Read more
Put this in your custom DbContext class: If your tables are not created on startup, this is why. You need to tell the DbContext about them in the OnModelCreating method override. You can either do custom per-entity mappings here, or separate them out into separate EntityTypeConfiguration<T> classes.
I’m struggling with a piece of code and getting the error: Too many characters in character literal error Using C# and switch statement to iterate through a string buffer and reading tokens, but getting the error in this line: case ‘&&’: case ‘||’: case ‘==’: How can I keep the == and && as a … Read more
You use standard syntax (using this like a method) to pick the overload, inside the class: then: Note also: you can chain to constructors on the base-type using base(…) you can put extra code into each constructor the default (if you don’t specify anything) is base() For “why?”: code reduction (always a good thing) necessary … Read more
Just cast the enum, e.g. The above will work for the vast majority of enums you see in the wild, as the default underlying type for an enum is int. However, as cecilphillip points out, enums can have different underlying types. If an enum is declared as a uint, long, or ulong, it should be … Read more