Get Index position of an element in a list in c#
int index = myList.FindIndex(a => a.Prop == oProp);Get Index position of an element in a list in c#
int index = myList.FindIndex(a => a.Prop == oProp);c# findindex
// Lets say you have an object with tha name of 'Role' nad it has parameters
// 'Name' & 'Id'
List<Role> roles = new List<Role>();
roles.Add(new Role() { Name = "Admin", Id = 1 });
roles.Add(new Role() { Name = "User", Id = 2 });
// Using a lambda expression we can find the index of a role
// with a specific text:
int roleIndex = roles.FindIndex(
// Note that you can also use the index if youd like
role => role.Name == "Admin"
);
// This can also be done using a variable from outside
// the lambda expression:
string name = "Admin";
int roleIndex = roles.FindIndex(
// Note that you can also use the index if youd like
role => role.Name == "name
);
if (roleIndex > -1)
{
Console.log($"Role {roles[roleIndex].Name} +
was found at index {roleIndex}");
}index of item in list C#
List<string> strings = new List<string>(){"bob","ate","an", "apple"};
strings.IndexOf("bob");
//returns 0
strings.IndexOf("an");
//returns 2
strings.IndexOf("apple");
//returns 3
strings.IndexOf("banana");
//returns -1
//Because banana is not in the list, IndexOf() returns -1Copyright © 2021 Codeinu
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