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C# Linq LastorDefault Method
Use the LastorDefault() method to return the last element of a sequence or a default value if element isn’t there.
The following is our empty list.
List<double> val = new List<double> { };Now the following will not be able to display the last element since the list is empty. Therefore, the default would get display and error won’t be shown.
val.AsQueryable().LastOrDefault();
The following is the code.
Example
using System;
using System.Collections.Generic;
using System.Linq;
class Demo {
static void Main() {
List<double> val = new List<double> { };
double d = val.AsQueryable().LastOrDefault();
Console.WriteLine("Default Value = "+d);
if (d == 0.0D) {
d = 0.1D;
}
Console.WriteLine("Default Value changed = "+d);
}
}Output
Default Value = 0 Default Value changed = 0.1
Updated on: 23-Jun-2020
2K+ Views
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