C#支持以下賦值運算符：

運算符	描述	示例
=	簡單的賦值操作符，分配值從右邊的操作數到左側的操作數	C = A + B 將分配 A + B 的值到 C
+=	加法和賦值運算符，它增加了右操作數左操作數和分配結果左操作數	C += A 相當於 C = C + A
-=	減和賦值運算符，它減去右操作數從左側的操作數和分配結果左操作數	C -= A 相當於 C = C - A
*=	乘法和賦值運算符，它乘以右邊的操作數與左操作數和分配結果左操作數	C *= A 相當於 C = C * A
/=	除法賦值運算符，它把左操作數使用右操作數和分配結果左操作數	C /= A 相當於 C = C / A
%=	模量和賦值運算符，它需要使用兩個操作數的模量和分配結果左操作數	C %= A 相當於 C = C % A
<<=	左移位並賦值運算符	C <<= 2 相當於 C = C << 2
>>=	向右移位並賦值運算符	C >>= 2 相當於 C = C >> 2
&=	按位與賦值運算符	C &= 2 相當於 C = C & 2
^=	按位異或並賦值運算符	C ^= 2 相當於 C = C ^ 2
|=	按位或並賦值運算符	C |= 2 相當於 C = C | 2

例子

試試下麵的例子就明白了可在C#中的所有賦值運算符：

using System;

namespace OperatorsAppl
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = 21;
            int c;

            c = a;
            Console.WriteLine("Line 1 - =  Value of c = {0}", c);

            c += a;
            Console.WriteLine("Line 2 - += Value of c = {0}", c);

            c -= a;
            Console.WriteLine("Line 3 - -=  Value of c = {0}", c);

            c *= a;
            Console.WriteLine("Line 4 - *=  Value of c = {0}", c);

            c /= a;
            Console.WriteLine("Line 5 - /=  Value of c = {0}", c);

            c = 200;
            c %= a;
            Console.WriteLine("Line 6 - %=  Value of c = {0}", c);

            c <<= 2;
            Console.WriteLine("Line 7 - <<=  Value of c = {0}", c);

            c >>= 2;
            Console.WriteLine("Line 8 - >>=  Value of c = {0}", c);

            c &= 2;
            Console.WriteLine("Line 9 - &=  Value of c = {0}", c);

            c ^= 2;
            Console.WriteLine("Line 10 - ^=  Value of c = {0}", c);

            c |= 2;
            Console.WriteLine("Line 11 - |=  Value of c = {0}", c);
            Console.ReadLine();
        }
    }
}

讓我們編譯和運行上麵的程序，這將產生以下結果：

Line 1 - =     Value of c = 21
Line 2 - +=    Value of c = 42
Line 3 - -=    Value of c = 21
Line 4 - *=    Value of c = 441
Line 5 - /=    Value of c = 21
Line 6 - %=    Value of c = 11
Line 7 - <<=    Value of c = 44
Line 8 - >>=    Value of c = 11
Line 9 - &=    Value of c = 2
Line 10 - ^=    Value of c = 0
Line 11 - |=    Value of c = 2