Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace LearnThread
{
    class Delay
    {
        public int timePass()
        {
            static int i=0;
            for(i=0; i<100;i++)
            {
                Thread.Sleep(1000);
            }
            return i;
        }
    }
}

Error:The modifier ‘static’ is not valid for this item

Why static is error here? We cannot use static for int as we can use in C language?

Answer 1

You can’t declare a locally scoped variable as static, which is what you are doing.

You can create a static field or static property for a class (i.e. it is a member of a class), which would reside outside of a method.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace LearnThread
{
    class Delay
    {
        static int i=0;

        public int timePass()
        {
            for(i=0; i<100;i++)
            {
                Thread.Sleep(1000);
            }
            return i;
        }
    }
}

---

Though, this code seems kinda dumb… why bother using a static field in a for-loop iteration? It can cause a lot of issues with multiple calls to the method. I presume that you’re either learning C# by playing around with crazy code, or you are trying to solve another problem and threw this code in. Either that or…. you’re doing it wrong. 🙂