Using LINQ, can I verify a property has the same value for all objects?

Question

I have a Crate object, which has a List of KeyValuePairs. Currently, I'm iterating through each pair to see if the kvp.Value.PixelsWide are the same for all items in the List. If they are, return true, else false.

The existing method that I have is shown below:

public bool Validate(Crate crate)     {         int firstSectionWidth = 0;         foreach (KeyValuePair<string, SectionConfiguration> kvp in crate.Sections)         {             if (firstSectionWidth == 0)//first time in loop             {                 firstSectionWidth = kvp.Value.PixelsWide;             }             else //not the first time in loop             {                 if (kvp.Value.PixelsWide != firstSectionWidth)                 {                     return false;                 }             }         }          return true;     } 

I'm curious if this would be possible to execute in a LINQ query?

Thanks in advance for any help!

Answer 1

I believe this would work:

public bool Validate(Crate crate) {     return crate.Sections                 .Select(x => x.Value.PixelsWide)                 .Distinct()                 .Count() < 2; } 

This will return true if crate.Sections is empty as well as when the elements are all the same (which is the behavior of your current function).

Answer 2

Try this

var pixelsWide = rate.Sections.Values.First().PixelsWide; bool result = crate.Sections.Values.All(x => x.PixelsWide == pixelsWide);