Multiple Where clauses in Lambda expressions

Question

I have a simple lambda expression that goes something like this   x  gt  x Lists Include l   gt  l Title  Where l  gt l Title    String Empty    Now  if I want to add one more where clause to the expression  say  l InternalName    String Empty then what would the expression be

User · Accepted Answer

Can be  x   gt  x Lists Include l   gt  l Title        Where l   gt  l Title    String Empty  amp  amp  l InternalName    String Empty    or  x   gt  x Lists Include l   gt  l Title        Where l   gt  l Title    String Empty        Where l   gt  l InternalName    String Empty    When you are looking at Where implementation  you can see it accepts a Func T  bool   that means    T is your IEnumerable type bool means it needs to return a boolean value   So  when you do   Where l   gt  l InternalName    String Empty                              ---------- boolean part         ------------------------------  T  part

User · Answer

The lambda you pass to Where can include any normal C  code  for example the  amp  amp  operator    Where l   gt  l Title    string Empty  amp  amp  l InternalName    string Empty

User · Answer

x  gt  x Lists Include l   gt  l Title  Where l  gt l Title    String Empty  Where l   gt  l Internal NAme    String Empty    or  x  gt  x Lists Include l   gt  l Title  Where l  gt l Title    String Empty  amp  amp  l Internal NAme    String Empty

User · Answer

You can include it in the same where statement with the  amp  amp  operator     x  gt  x Lists Include l   gt  l Title  Where l  gt l Title    String Empty       amp  amp  l InternalName    String Empty    You can use any of the comparison operators  think of it like doing an if statement  such as     List lt Int32 gt  nums   new List lt int gt      nums Add 3   nums Add 10   nums Add 5    var results   nums Where x   gt  x    3    x    10        would bring back 3 and 10

User · Answer

Maybe  x  gt  x Lists Include l   gt  l Title       Where l   gt  l Title    string Empty       Where l   gt  l InternalName    string Empty       You can probably also put it in the same where clause   x  gt  x Lists Include l   gt  l Title       Where l   gt  l Title    string Empty  amp  amp  l InternalName    string Empty

[c#] Multiple Where clauses in Lambda expressions

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