What is the difference between Is and as Keyword in C# ?


Hi

One time i got this question in interview. Answer of this question , i have implemented in this code like this

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//The is operator is used to check whether the run-time type of an object is compatible with a given

object num=10;
if (num is int)
{
Response.Write(“Num is integer”);
}

//The as operator is used to perform conversions between compatible types.

object ss = “This sis the string”;
string str = string.Empty;
if (ss is string)
{
str = ss as string;

Response.Write(str);
}

}
}

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2 Responses to “What is the difference between Is and as Keyword in C# ?”

  1. Vigneshwaran Says:

    Sir can u please send code for send message from asp.net to mobile.. I need his for my mini project…

    • Chandra Dev Says:

      Hi

      There would not be the unique code for sending sms. We have to register on their site then we will get the api code. There will be instruction to implement in your application. It will paid service.


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