vb.net转换为数字 vb数据类型转换
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
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)
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