VB.Net - 赋值运算符

VB.Net支持以下赋值运算符：

运算符	描述	示例
=	Simple assignment operator, Assigns values from right side operands to left side operand 简单赋值操作符，将值从右侧操作数分配给左侧操作数	C = A + B will assign value of A + B into C
+=	Add AND assignment operator, It adds right operand to the left operand and assigns the result to left operand 添加AND赋值运算符，向左操作数添加右操作数，并将结果赋给左操作数	C += A is equivalent to C = C + A
-=	Subtract AND assignment operator, It subtracts right operand from the left operand and assigns the result to left operand 减法AND赋值运算符，它从左操作数中减去右操作数，并将结果赋给左操作数	C -= A is equivalent to C = C - A
*=	Multiply AND assignment operator, It multiplies right operand with the left operand and assigns the result to left operand 乘法AND赋值运算符，它将右操作数与左操作数相乘，并将结果赋给左操作数	C = A is equivalent to C = C A
/=	Divide AND assignment operator, It divides left operand with the right operand and assigns the result to left operand (floating point division) 除法AND赋值运算符，它用右操作数划分左操作数，并将结果分配给左操作数（浮点除法）	C /= A is equivalent to C = C / A
\=	Divide AND assignment operator, It divides left operand with the right operand and assigns the result to left operand (Integer division) 除法AND赋值运算符，它用右操作数划分左操作数，并将结果分配给左操作数（整数除法）	C \= A is equivalent to C = C \A
^=	Exponentiation and assignment operator. It raises the left operand to the power of the right operand and assigns the result to left operand 指数和赋值运算符。它将左操作数提升为右操作数的幂，并将结果分配给左操作数	C^=A is equivalent to C = C ^ A
<<=	Left shift AND assignment operator 左移AND赋值运算符	C <<= 2 is same as C = C << 2
>>=	Right shift AND assignment operator 右移AND赋值运算符	C >>= 2 is same as C = C >> 2
&=	Concatenates a String expression to a String variable or property and assigns the result to the variable or property. 将String表达式连接到String变量或属性，并将结果分配给变量或属性。	Str1 &= Str2 is same as Str1 = Str1 & Str2

示例：

尝试以下示例来了解VB.Net中可用的所有赋值运算符：

Module assignment
   Sub Main()
      Dim a As Integer = 21
      Dim pow As Integer = 2
      Dim str1 As String = "Hello! "
      Dim str2 As String = "VB Programmers"
      Dim c As Integer
      c = a
      Console.WriteLine("Line 1 - =  Operator Example, _
	  Value of c = {0}", c)
      c += a
      Console.WriteLine("Line 2 - +=  Operator Example, _
	  Value of c = {0}", c)
      c -= a
      Console.WriteLine("Line 3 - -=  Operator Example, _
	  Value of c = {0}", c)
      c *= a
      Console.WriteLine("Line 4 - *=  Operator Example, _
	  Value of c = {0}", c)
      c /= a
      Console.WriteLine("Line 5 - /=  Operator Example, _
	  Value of c = {0}", c)
      c = 20
      c ^= pow
      Console.WriteLine("Line 6 - ^=  Operator Example, _
	  Value of c = {0}", c)
      c <<= 2
      Console.WriteLine("Line 7 - <<=  Operator Example,_
	  Value of c = {0}", c)
      c >>= 2
      Console.WriteLine("Line 8 - >>=  Operator Example,_
	  Value of c = {0}", c)
      str1 &= str2
      Console.WriteLine("Line 9 - &=  Operator Example,_
	  Value of str1 = {0}", str1)
      Console.ReadLine()
   End Sub
End Module

当上述代码被编译和执行时，它产生以下结果：

Line 1 - =  Operator Example, Value of c = 21
Line 2 - += Operator Example, Value of c = 42
Line 3 - -= Operator Example, Value of c = 21
Line 4 - *= Operator Example, Value of c = 441
Line 5 - /= Operator Example, Value of c = 21
Line 6 - ^= Operator Example, Value of c = 400
Line 7 - <<= Operator Example, Value of c = 1600
Line 8 - >>= Operator Example, Value of c = 400
Line 9 - &= Operator Example, Value of str1 = Hello! VB Programmers

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VB.Net - 赋值运算符

示例：