vb.net字符转数字 vba字符转换成数字

gb2312>unicode>utf8,以及逆转的方法'>VB.net 字符转换问题 字符(汉字、数字、字母、符号)>gb2312>unicode>utf8, 以及逆转的方法字符编码转换吗?
1.字符与gb2312(gbk的子集):
Public Function GBKEncode(ByVal sInput As String) As String
Dim ret_GBKEncode As String = ""
Dim i As Integer
Dim startIndex As Integer = 0
Dim endIndex As Integer
Dim x() As Byte = System.Text.Encoding.Default.GetBytes(sInput) '字符以及字符串在vb2008中都是以unicode编码存储的
endIndex = x.Length - 1
For i = startIndex To endIndex
ret_GBKEncode = "%"Hex(x(i))
Next
Return ret_GBKEncode
End Function
'GBK解码
Public Function GBKDecode(ByVal sInput As String) As String
sInput = sInput.Replace("%", "")
Dim ret_GBKDecode As String = ""
Dim sLen As Integer = sInput.Length
Dim n As Integer = sLen \ 2
Dim sBytes(0 To n - 1) As Byte
'转化为字节码
For i As Integer = 1 To n
sBytes(i - 1) = CByte("H"sInput.Substring(2 * i - 2, 2))
Next
'将字节码转化为字符串
ret_GBKDecode = System.Text.Encoding.Default.GetString(sBytes)
Return ret_GBKDecode
End Function
2.Unicode字符串为UTF-8
Imports System.Text
Public Function StringAsUtf8Bytes(ByVal strData As String) As Byte()
Dim bytes() As Byte
bytes = Encoding.UTF8.GetBytes(strData)
Return bytes
End Function
'这里可以类推出好几种 。
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
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
怎样在VB中将文本转换成数值1、首先在电脑中找到并打开VB软件vb.net字符转数字 , 找到一句输出的函数 。
2、然后在其数组变量中vb.net字符转数字 , 套上一个Str函数 。
3、这里注意函数的关键字vb.net字符转数字 , 是没有区分大小写的 。
4、然后函数是可以多个嵌套使用 。
5、最后点击运行按钮vb.net字符转数字,这样就可以成功运行测试,如下图所示 , 转换就完成了 。
vb.net 字符串,16进制间转换(求代码)把字符串“12341168C5B7”转换为16进制数存为string型
用shuzi=Convert.ToInt32("12341168C5B7",16)
就ok了 。
反之用 shuzi.ToString("X")就行了 。
给分?。。?
12341168C5B7转换成10进制数就是20014839678391 。。
而int32的最大值为2,147,483,647 。。所以产生错误 。
所以要用int64 , 它的最大值为9,223,372,036,854,775,807 。也就是16位十六进制数0X7FFFFFFFFFFFFFFF 。
难道还有比F靠后的数??????
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
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 = mystr2setdata(Val(mystr4))"角"
End If
If mystr3"" Then
mystr4 = Left(mystr3, 1)
mystr2 = mystr2setdata(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 = mystr1setdata(money1)chang(j)
End If
j = j - 1
Next i
Text1.Text = mystr1"元"mystr2'显示大写
End Sub
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