vb.net取反 vbnet function 有返回值 举例

VB.NET用正则表达提取数字的问题！

你把替换所有非数字为空字符串,改为替换所有非数字为空格,就可以把每组数字分开了.

完整的程序如下(改动的地方见注释)

Dim bbb As String

bbb = TextBox1.Text  

Dim My_str As String = Regex.Replace(bbb, "[^0-9]", " ") '这里把替换所有非数字为空字符串,改为替换所有非数字为空格

MsgBox(My_str)

相关问答

Q1: vb 十进制转换成 八进制 二进制原码 二进制补码 二进制反码 程序

VB.NET控制台程序：

Module module3

Sub Main()

Dim i As Integer

Dim num As Integer = -35

Dim R As Integer = 8

Dim arr(33) As Integer

Dim len As Integer

arr = TransToR(num, R)

len = arr(0)

Console.Write(num " 转换成 " R " 进制后：" vbTab)

If (arr(1) = 1) Then

Console.Write("-")

End If

For i = len + 1 To 2 Step -1

Console.Write(arr(i))

Next

Console.WriteLine()

arr = TransToSourceCode(num)

Console.Write(num " 转换成32位二进制源码后：" vbTab)

Console.Write(arr(1))

For i = 32 To 2 Step -1

Console.Write(arr(i))

Next

Console.WriteLine()

arr = TransToReverseCode(num)

Console.Write(num " 转换成32位二进制反码后：" vbTab)

Console.Write(arr(1))

For i = 32 To 2 Step -1

Console.Write(arr(i))

Next

Console.WriteLine()

arr = TransToCompensatoryCode(num)

Console.Write(num " 转换成32位二进制补码后：" vbTab)

Console.Write(arr(1))

For i = 32 To 2 Step -1

Console.Write(arr(i))

Next

Console.WriteLine()

End Sub

'将十进制数num转换为R(2=R=9)进制数，结果存在arr数组中

'arr(0)存储长度, arr(1)存储符号位：1为负，0为正

Function TransToR(ByVal num As Integer, ByVal R As Integer) As Integer()

Dim arr(33) As Integer

arr(0) = 0 '初始长度

'设置符号位

If (num 0) Then

arr(1) = 1

Else

arr(1) = 0

End If

num = Math.Abs(num)

While num 0

arr(0) = arr(0) + 1

arr(arr(0) + 1) = num Mod R

num \= R

End While

Return arr

End Function

'将十进制数num转换为二进制原码

Function TransToSourceCode(ByVal num As Integer) As Integer()

Dim arr(33) As Integer

Dim i As Integer

arr = TransToR(num, 2)

'高位补零

For i = arr(0) + 2 To 32

arr(i) = 0

Next

arr(0) = 32

Return arr

End Function

'将十进制数num转换为二进制反码

Function TransToReverseCode(ByVal num As Integer) As Integer()

Dim arr(33) As Integer

Dim i As Integer

arr = TransToSourceCode(num)

If num = 0 Then

Return arr

End If

'除符号位外各位取反

For i = 2 To 33

arr(i) = 1 - arr(i)

Next

Return arr

End Function

'将十进制数num转换为二进制补码

Function TransToCompensatoryCode(ByVal num As Integer) As Integer()

Dim arr(33) As Integer

Dim i As Integer

Dim c As Integer = 0 '进位

arr = TransToReverseCode(num)

If num = 0 Then

Return arr

End If

'末尾加1

i = 2

arr(i) += 1

Do While True

arr(i) = c + arr(i)

c = arr(i) \ 2

arr(i) = arr(i) Mod 2

i += 1

If c 1 Then

Exit Do

End If

Loop

Return arr

End Function

End Module

Q2: C语言转换为VB.NET

Option Explicit On

Option Strict On

Imports System

Module Program

Sub Main()

Dim y,m,t As Integer

begin:

' 输入数据时一行一个

y=CInt(Console.ReadLine())

m=CInt(Console.ReadLine())

t=CInt(Console.ReadLine())

If y

200 Then

Console.WriteLine("ERROR")

goto begin

End If

pr(y,m,t)

Console.Write("Press any key to continue . . . ")

Console.ReadKey(True)

End Sub

Function pr(y As Integer,m As Integer,t As Integer) As Integer

Dim ye,[Me],i As Integer

ye=CInt((m+t-2)/12+y)

[Me]=(m+t-2) Mod 12+1

End If

End Function

Function mday(y As Integer,m As Integer) As Integer

Dim day As Integer()={0,31,28,31,30,31,30,31,31,30,31,30,31}

Dim ad As I

Q3: vb中怎样对一个变量进行取反?

vb中的变量取反是：not+变量

not,and,or,Xor 用做boolean值时，它们就作为逻辑运算符

not,and,or,Xor 用整数值时，它们就作为位运算符

例子：dim a as integer =not 143 ' a=-144 按位取反！~~~~~

Q4: Vb.net中如何判断字段为空！！！

if myreader.getstring(2) "" then

else

....

end if

取反 这样可以vb.net取反的 vb.net取反我一直就这样写

Q5: C# 如何使用 VB.net 中的Not?

C#.NET和VB.NET是同一托管平台(framework)下的两种不同语言，当然语法会存在差异。所以C#中无法写出以上代码，只能如此：

ButView.Check = false;

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