https://github.com/mgravell/fast-member

Automatically exported from code.google.com/p/fast-member
https://github.com/mgravell/fast-member

Last synced: 21 days ago
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Automatically exported from code.google.com/p/fast-member

• Host: GitHub
• URL: https://github.com/mgravell/fast-member
• Owner: mgravell
• License: apache-2.0
• Created: 2015-11-23T20:09:54.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2024-03-30T22:29:29.000Z (7 months ago)
• Last Synced: 2024-10-04T08:50:07.286Z (about 1 month ago)
• Language: C#
• Size: 183 KB
• Stars: 1,018
• Watchers: 59
• Forks: 137
• Open Issues: 60
• Metadata Files:
  • Readme: Readme.md
  • License: LICENSE

Awesome Lists containing this project

• Awesome-Nuget-Packages - **FastMember**

README

        

Fast access to .net fields/properties

=====================================

In .NET reflection is slow... well, kinda slow. If you need access to the members of an arbitrary type, with the type and member-names known only at runtime - then it is frankly **hard** (especially for DLR types). This library makes such access easy and fast.

An introduction to the reasons behind fast-member can be found on my blog; example usage is simply:

```csharp

var accessor = TypeAccessor.Create(type); 

string propName = // something known only at runtime 

while( /* some loop of data */ )

{ 

  accessor[obj, propName] = rowValue; 

}

```

or

```csharp

// obj could be static or DLR 

var wrapped = ObjectAccessor.Create(obj);

string propName = // something known only at runtime 

Console.WriteLine(wrapped[propName]);

```

### Ever needed an `IDataReader`?

This is pretty common if you are doing object-mapping between an object model and ADO.NET concepts such as `DataTable` or `SqlBulkCopy`; loading a `DataTable` (yes, some people still use it) from a sequence of typed objects can now be as easy as:

```csharp

IEnumerable data = ... 

var table = new DataTable(); 

using(var reader = ObjectReader.Create(data)) 

{ 

  table.Load(reader); 

}

```

(the `Create` method offers parameters to control the specific members, if needed)

Or if you want to throw the data into a database as fast as humanly possible:

```csharp

using(var bcp = new SqlBulkCopy(connection)) 

using(var reader = ObjectReader.Create(data, "Id", "Name", "Description")) 

{ 

  bcp.DestinationTableName = "SomeTable"; 

  bcp.WriteToServer(reader); 

}

```

### Ahead of Time

Library emits IL code during runtime. Will not work in constrained Ahead of Time environments. Xamarin iOS and Unity IL2CPP are such.