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25 maj 2012 · select new { type = grp.key, count = grp.Count() }; For a single object, make use of StringBuilder and append it, or convert this in the form of dictionary: // fordictionary. var x = (from t in types group t by t.Type. into grp.
19 lip 2012 · What I would like to do is use LINQ to select from my data to create a collection of SongsForUser objects. Below is what I have come up with so far: var userCombos = songs.UserSongs.Select(x => new SongsForUser() { User = x.UserId,
This projection method requires the transform function, selector, to produce one value for each value in the source sequence, source. If selector returns a value that is itself a collection, it is up to the consumer to traverse the subsequences manually.
The following code example demonstrates how to use Select<TSource,TResult>(IQueryable<TSource>, Expression<Func<TSource,Int32,TResult>>) to project over a sequence of values and use the index of each element in the projected form.
The Select() method allows you to transform and shape data from your data source into new variants, for instance by selecting only a single property or returning objects which only contains a subset of the properties found on the source object.
4 maj 2011 · When you write a C# query expression using Select all you do is specify the transformation function and let the compiler work out the types of the source and result data. For example, var q = from i in col where i > 250. select i*2; The final select now creates a function: Func<int, int> MySelect=i->i*2;
C# Linq example on how to use the Select method. You can use the Select operation to map to another object and also using Select with an Index.
