VB.Net支持下列赋值运算符：
| 运算符 | 描述 | 说明 |
|---|---|---|
= |
简单赋值操作符，将右侧操作数的值赋给左侧操作数 | C = A + B将把A + B的值赋值给C |
+= |
添加和赋值操作符，它将右操作数添加到左操作数，并将结果赋给左操作数 | C += A 等效于 C = C + A |
-= |
减去和赋值运算符，从左边的操作数中减去右边的操作数，并将结果赋给左边的操作数 | C -= A 等效于 C = C - A |
*= |
乘法和赋值运算符，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 等效于 C = C * A |
/= |
除法和赋值运算符，用左操作数和右运算数分开，赋值给左操作数(浮点除法) | C /= A 等效于 C = C / A |
\= |
除法和赋值运算符，用左操作数除以右操作数，并将结果赋给左操作数(整数除法) | C \= A 等效于 C = C \A |
^= |
指数运算和赋值运算符。它将左操作数指定的右操作数指数的幂值，并将结果赋给左操作数。 | C^=A 等效于 C = C ^ A |
<<= |
左移和赋值运算符 | C <<= 2 等效于 C = C << 2 |
>>= |
右移和赋值运算符 | C >>= 2 等效于 C = C >> 2 |
&= |
将一个字符串(String)表达式连接到一个字符串(String)变量或属性，并将结果赋给变量或属性。 | Str1 &= Str2 等效于 Str1 = Str1 & Str2 |
实例：
尝试下面的例子来理解VB.Net中的所有赋值运算符，文件：assignmentOp.vb
Module assignmentOp
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
执行上面示例代码，得到以下结果 -
F:\worksp\vb.net\operators>vbc assignmentOp.vb
F:\worksp\vb.net\operators>assignmentOp.exe
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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