I've got the following classes:
public class SupplierCategory : IEquatable<SupplierCategory>
{
public string Name { get; set; }
public string Parent { get; set; }
#region IEquatable<SupplierCategory> Members
public bool Equals(SupplierCategory other)
{
return this.Name == other.Name && this.Parent == other.Parent;
}
#endregion
}
public class CategoryPathComparer : IEqualityComparer<List<SupplierCategory>>
{
#region IEqualityComparer<List<SupplierCategory>> Members
public bool Equals(List<SupplierCategory> x, List<SupplierCategory> y)
{
return x.SequenceEqual(y);
}
public int GetHashCode(List<SupplierCategory> obj)
{
return obj.GetHashCode();
}
#endregion
}
And i'm using the following linq query:
CategoryPathComparer comparer = new CategoryPathComparer();
List<List<SupplierCategory>> categoryPaths = (from i in infoList
select
new List<SupplierCategory>() {
new SupplierCategory() { Name = i[3] },
new SupplierCategory() { Name = i[4], Parent = i[3] },
new SupplierCategory() { Name = i[5], Parent = i[4] }}).Distinct(comparer).ToList();
But the distinct does not do what I want it to do, as the following code demonstrates:
comp.Equals(categoryPaths[0], categoryPaths[1]); //returns True
Am I using this in a wrong way? why are they not compared as I intend them to?
Edit: To demonstrate the the comparer does work, the following returns true as it should:
List<SupplierCategory> list1 = new List<SupplierCategory>() {
new SupplierCategory() { Name = "Cat1" },
new SupplierCategory() { Name = "Cat2", Parent = "Cat1" },
new SupplierCategory() { Name = "Cat3", Parent = "Cat2" }
};
List<SupplierCategory> list1 = new List<SupplierCategory>() {
new SupplierCategory() { Name = "Cat1" },
new SupplierCategory() { Name = "Cat2", Parent = "Cat1" },
new SupplierCategory() { Name = "Cat3", Parent = "Cat2" }
};
CategoryPathComparer comp = new CategoryPathComparer();
Console.WriteLine(comp.Equals(list1, list2).ToString());