如何获取C#中变量的数据类型？

Question

How can I find out what data type some variable is holding? (eg int, string, char, etc.)

I have something like this now:

private static void Main()
{
   var someone = new Person();
   Console.WriteLine(someone.Name.typeOf());
}

public class Person
{
    public int Name { get; set; }
}

Answer 1

How can I find out what data type some variable is holding? (eg int, string, char, etc.)

I have something like this now:

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

namespace Testing
{
    class Program
    {
        static void Main()
        {
            Person someone = new Person();
            someone.setName(22);
            int n = someone.getName();
            Console.WriteLine(n.typeOf());
        }
    }

    class Person
    {
        public int name;

        public void setName(int name)
        {
            this.name = name;
        }

        public int getName()
        {
            return this.name;
        }
    }
}

Answer 2

How can I find out what data type some variable is holding? (eg int, string, char, etc.)

I have something like this now:

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

namespace Testing
{
    class Program
    {
        static void Main()
        {
            Person someone = new Person();
            someone.setName(22);
            int n = someone.getName();
            Console.WriteLine(n.typeOf());
        }
    }

    class Person
    {
        public int name;

        public void setName(int name)
        {
            this.name = name;
        }

        public int getName()
        {
            return this.name;
        }
    }
}

Answer 3

How can I find out what data type some variable is holding? (eg int, string, char, etc.)

I have something like this now:

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

namespace Testing
{
    class Program
    {
        static void Main()
        {
            Person someone = new Person();
            someone.setName(22);
            int n = someone.getName();
            Console.WriteLine(n.typeOf());
        }
    }

    class Person
    {
        public int name;

        public void setName(int name)
        {
            this.name = name;
        }

        public int getName()
        {
            return this.name;
        }
    }
}

Answer 4

How can I find out what data type some variable is holding? (eg int, string, char, etc.)

I have something like this now:

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

namespace Testing
{
    class Program
    {
        static void Main()
        {
            Person someone = new Person();
            someone.setName(22);
            int n = someone.getName();
            Console.WriteLine(n.typeOf());
        }
    }

    class Person
    {
        public int name;

        public void setName(int name)
        {
            this.name = name;
        }

        public int getName()
        {
            return this.name;
        }
    }
}

Answer 5

How can I find out what data type some variable is holding? (eg int, string, char, etc.)

I have something like this now:

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

namespace Testing
{
    class Program
    {
        static void Main()
        {
            Person someone = new Person();
            someone.setName(22);
            int n = someone.getName();
            Console.WriteLine(n.typeOf());
        }
    }

    class Person
    {
        public int name;

        public void setName(int name)
        {
            this.name = name;
        }

        public int getName()
        {
            return this.name;
        }
    }
}

Answer 6

How can I find out what data type some variable is holding? (eg int, string, char, etc.)

I have something like this now:

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

namespace Testing
{
    class Program
    {
        static void Main()
        {
            Person someone = new Person();
            someone.setName(22);
            int n = someone.getName();
            Console.WriteLine(n.typeOf());
        }
    }

    class Person
    {
        public int name;

        public void setName(int name)
        {
            this.name = name;
        }

        public int getName()
        {
            return this.name;
        }
    }
}

Answer 7

How can I find out what data type some variable is holding? (eg int, string, char, etc.)

I have something like this now:

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

namespace Testing
{
    class Program
    {
        static void Main()
        {
            Person someone = new Person();
            someone.setName(22);
            int n = someone.getName();
            Console.WriteLine(n.typeOf());
        }
    }

    class Person
    {
        public int name;

        public void setName(int name)
        {
            this.name = name;
        }

        public int getName()
        {
            return this.name;
        }
    }
}

Answer 8

PHP and C# are related syntactically but quite different, whilst I could answer the question at face value (See this article http://msdn.microsoft.com/en-us/library/58918ffs(v=vs.71).aspx ) I strongly advise you to get hold of a copy of CLR via C# (Third or second edition) by Jeffrey Richter and read it. Its the finest book related to programming I think I've ever read and would answer almost all of your type related questions and give you a very deep understanding of what's going on under the hood!

Answer 9

How can I find out what data type some variable is holding? (eg int, string, char, etc.)

I have something like this now:

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

namespace Testing
{
    class Program
    {
        static void Main()
        {
            Person someone = new Person();
            someone.setName(22);
            int n = someone.getName();
            Console.WriteLine(n.typeOf());
        }
    }

    class Person
    {
        public int name;

        public void setName(int name)
        {
            this.name = name;
        }

        public int getName()
        {
            return this.name;
        }
    }
}

Answer 10

Use the Object.GetType Method, this will do the job.

If you just wanna know the type of a variable:

var test = (byte)1;
Console.WriteLine(test.GetType());

Answer 11

using System;

using System.ComponentModel.DataAnnotations;

class Program
{

    static void Main()
    {
        int x = Convert.ToInt16(Console.ReadLine());
        Console.WriteLine(x.GetType());//Returns type of x 
    }

}

//Code from visual Studio written in c#