Lambda expression returning error

Question

This is my code: ``` SomeFunction(m => { ViewData["AllEmployees"].Where(c => c.LeaderID == m.UserID); }) ``` and it returns this error: Not all code paths return a value in lambda expression of type `System.Func<IEnumerable>`

Accepted Answer

Assuming you're trying to return the result of that `.Where()` query, you need to drop those braces and that semicolon:

```
SomeFunction(m => ViewData["AllEmployees"].Where(c => c.LeaderID == m.UserID))
```

If you put them there, `ViewData[...].Where()` will be treated as a statement and not an expression, so you end up with a lambda that doesn't return when it's supposed to, causing the error.

Or if you insist on putting them there, you need a `return` keyword so the statement actually returns:

```
SomeFunction(m =>
{
    return ViewData["AllEmployees"].Where(c => c.LeaderID == m.UserID);
})
```

Lambda expression returning error

Solution

Problem