✅ namespace and using keyword in C#

Hello guys, I have a quick question. I don't understand, when do we use the

using

using

keyword and the

namespace

namespace

keyword... can they be used interchangeably ? (don't remember if I once saw a namespace along with a library name... is that even allowed?) .

Now, the namespace, sometimes I saw something like that:

namespace {...}

namespace {...}

like we have the curly braces but sometimes we don't. My IDE always do the heavy lifting but I wanted to understand what the syntax is :c.

Do we use the keyword

using

using

when we need to use certain libraries? While the keyword

namespace

namespace

is used to related to certain folders/cs files? I'm a bit confused here :c... what about the

namespace {...}

namespace {...}

syntax please

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Microsoft.EntityFrameworkCore.Diagnostics;

namespace MainProject.Context;

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Microsoft.EntityFrameworkCore.Diagnostics;

namespace MainProject.Context;

C#•12mo ago•

10 replies

Faker

✅ namespace and using keyword in C#

Hello guys, I have a quick question. I don't understand, when do we use the

using

using

keyword and the

namespace

namespace

keyword... can they be used interchangeably ? (don't remember if I once saw a namespace along with a library name... is that even allowed?) .

Now, the namespace, sometimes I saw something like that:

namespace {...}

namespace {...}

like we have the curly braces but sometimes we don't. My IDE always do the heavy lifting but I wanted to understand what the syntax is :c.

Do we use the keyword

using

using

when we need to use certain libraries? While the keyword

namespace

namespace

is used to related to certain folders/cs files? I'm a bit confused here :c... what about the

namespace {...}

namespace {...}

syntax please

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Microsoft.EntityFrameworkCore.Diagnostics;

namespace MainProject.Context;

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Microsoft.EntityFrameworkCore.Diagnostics;

namespace MainProject.Context;

✅ namespace and using keyword in C#

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