I just open a new C# project , but when i want to compile it i give the title error . i search for this error but didn't find any result .
what am i going to do ?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("hello world!");
}
}
}