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What is the purpose of ‘as’ operator in C#?
The "as" operator perform conversions between compatible types. It is like a cast operation and it performs only reference conversions, nullable conversions, and boxing conversions. The as operator can't perform other conversions, such as user-defined conversions, which should instead be performed by using cast expressions.
The following is an example showing the usage of as operation in C#. Here as is used for conversion.
string s = obj[i] as string;
Try to run the following code to work with ‘as’ operator in C#.
Example
using System;
public class Demo {
public static void Main() {
object[] obj = new object[2];
obj[0] = "jack";
obj[1] = 32;
for (int i = 0; i < obj.Length; ++i) {
string s = obj[i] as string;
Console.Write("{0}: ", i);
if (s != null)
Console.WriteLine("'" + s + "'");
else
Console.WriteLine("This is not a string!");
}
Console.ReadKey();
}
}Output
0: 'jack' 1: This is not a string!
Updated on: 23-Jun-2020
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