vb.net转换数字 vb转换函数

vb.net 如何把大写金额转换成阿拉伯数字金额？

Private Sub Text2_Change() '大写金额转换成阿拉伯数字金额

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Dim i As Integer

Dim j As Integer

Dim myint As Integer

Dim myint1 As Integer

Dim mydoub As Double

Dim mystr As String

Dim mystr1 As String

Dim mystr2 As String

Dim mystr3 As String

Dim mystr4 As String

Dim money As Long

Dim money1 As Integer

Dim money2 As Long

mystr = Text2.Text

myint = InStr(mystr, ".")

If myint = 0 Then

mystr = Text2.Text

Else

mystr3 = Right(Text2.Text, Len(Text2.Text) - myint)

If mystr3 "" Then '转换小数位

mystr4 = Left(mystr3, 1)

mystr3 = Right(mystr3, Len(mystr3) - 1)

If mystr4 "0" Then

mystr2 = mystr2 + setdata(Val(mystr4)) + "角"

End If

If mystr3 "" Then

mystr4 = Left(mystr3, 1)

mystr2 = mystr2 + setdata(Val(mystr4)) + "分"

End If

End If

mystr = Left(Text2.Text, myint - 1)

End If

j = Len(mystr)

For i = 1 To Len(mystr) '转换整数位

money2 = Left(mystr, i)

money1 = Right(money2, 1)

If money1 = 0 Then

If j = 5 Then

If Right(mystr1, 1) "万" Then mystr1 = mystr1 "万"

Else

If Right(mystr1, 1) "零" And Right(money, j) 0 Then mystr1 = mystr1 "零"

End If

Else

mystr1 = mystr1 setdata(money1) + chang(j)

End If

j = j - 1

Next i

Text1.Text = mystr1 "元" mystr2 '显示大写

End Sub

刚入手VB.NET不知道怎么将数字转换成字节数组

Private Function Conver_Hex(ByVal L As Long) As Array

Dim str_L As String = Hex(L)

If str_L.Length \ 2 0 Then

str_L = "0" str_L

End If

Dim byt(str_L.Length / 2 - 1) As Byte

For i = 0 To str_L.Length / 2 - 1

byt(i) = Convert.ToByte(str_L.Substring(2 * i, 2), 16)

Next

Return byt

End Function

'下面是调用代码

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim L As Double = 123456

Dim byt() As Byte = Conver_Hex(L)

End Sub

VB 怎样将字符串转化为数值

最简单的就是直接转换，就是把字符串变量赋值给数值变量。\x0d\x0a数值变量=字符串\x0d\x0a\x0d\x0a如果必须转换，就使用 Val 函数赋值，会把字符串转换成双精度数。\x0d\x0a比如：数值变量=Val(字符串)\x0d\x0a例：\x0d\x0an = Val("3.5") ' 变量n赋值为3.5\x0d\x0a\x0d\x0a或者使用取整函数，也可以转换。\x0d\x0a比如：数值变量=Int(字符串) 或者 数值变量=CInt(字符串)\x0d\x0a例：\x0d\x0an = Int("3.5") ' 取整数，变量n赋值为3\x0d\x0a\x0d\x0an = CInt("3.5") ' 四舍五入取整数，变量n赋值为4

vb.net数组型转换为数字型

Dim byts1() As Byte = {255, 255, 0, 0}

'4位16进制数组转Integer

Dim value As Integer = BitConverter.ToInt32(byts1, 0)

'Integer转4位16进制数组()

Dim byts2() As Byte = BitConverter.GetBytes(value)

vb.net中如何将一行包含字母、标点、数字(可能是小数)的字符串转换为纯数字的数组？

string str1 = "a=1.2，3.5，7.88";

var arr = (from s in str1.Split('=')[1].Split('，') where s.Trim() != "" select Convert.ToDouble(s)).ToArray();

Split('，')这个地方逗号是全角还是半角的按照你文本内容里面的来

VB.NET如何把字符串（不全是数字或为空）转换成数字？

明白你的意思了,只要是字母都会转换成数字,帮你写好了("usernane"和 "pasward" 我这里写成 "username" 和" password"）

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim username, password As String

Dim temp As Long

Dim r As String = ""

Dim v As String = TextBox1.Text

For Each c In v.ToString

If IsNumeric(c) Then

r = c

Else

r = ((Asc(c) - 65).ToString("00"))

End If

Next

username = r

temp = username * 3 - 500

password = CStr(temp)

TextBox2.Text = password

End Sub