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 |
|---|---|---|
| = | 简单赋值运算符，将右侧操作数的值赋给左侧操作数 | C = A + B 将 A + B 的值赋给 C |
| += | 添加AND赋值运算符，它将右操作数添加到左操作数并将结果分配给左操作数 | C += A 相当于 C = C + A |
| -= | 减法AND赋值运算符，左操作数减去右操作数，并将结果赋给左操作数 | C -= A 相当于 C = C - A |
| *= | 乘法AND赋值运算符，将右操作数与左操作数相乘，并将结果赋给左操作数 | C *= A 相当于 C = C * A |
| /= | 除法AND赋值运算符，它将左操作数与右操作数相除，并将结果赋给左操作数（浮点除法） | C /= A 相当于 C = C / A |
| \= | 除法AND赋值运算符，它将左操作数与右操作数相除，并将结果赋给左操作数（整数除法） | C \= A 相当于 C = C \A |
| ^= | 求幂和赋值运算符。 它将左操作数进行右操作数的幂并将结果赋给左操作数 | C^=A 相当于 C = C ^ A |
| <<= | 左移AND赋值运算符 | C <<= 2 相当于 C = C << 2 |
| >>= | 右移与赋值运算符 | C >>= 2 相当于 C = C >> 2 |
| &= | 将字符串表达式连接到字符串变量或属性，并将结果分配给该变量或属性。 |
Str1 &= Str2 与 Str1 = Str1 & Str2 相同 |
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
当上面的代码被编译并执行时，会产生以下结果 −
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
