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C# / .NET - check if List is empty
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In this article, we would like to show you how to check if List is empty in C#.
Quick solution:
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List<int> list = new List<int>();2
3
bool isEmpty = !list.Any();4
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Console.WriteLine(isEmpty); // Output: Trueor:
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List<int> list = new List<int>();2
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bool isEmpty = list.Count() == 0;4
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Console.WriteLine(isEmpty); // Output: True
In this example, we check if list is empty using Any() method from System.Linq.
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using System;2
using System.Linq;3
using System.Collections.Generic;4
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public class Program6
{7
public static void Main()8
{9
List<int> list1 = new List<int>();10
List<int> list2 = new List<int> { 1, 2, 3 };11
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Console.WriteLine(isEmpty(list1)); // Output: True13
Console.WriteLine(isEmpty(list2)); // Output: False14
}15
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private static bool isEmpty(List<int> list)17
{18
return !list.Any();19
}20
}Output:
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True2
FalseIn this example, we check if list is empty using List.Count property.
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using System;2
using System.Collections.Generic;3
4
public class Program5
{6
public static void Main()7
{8
List<int> list1 = new List<int>();9
List<int> list2 = new List<int> { 1, 2, 3 };10
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Console.WriteLine(isEmpty(list1)); // Output: True12
Console.WriteLine(isEmpty(list2)); // Output: False13
}14
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private static bool isEmpty(List<int> list)16
{17
return list.Count == 0;18
}19
}Output:
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True2
False