vb.net 中如何处理输入小写变大写

可以试着用典型的VB字符串函数UCase解决。

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比如先把输入的内容放到字符串A$中，若A$="a",则经

A$=UCase(A$)转换后，结果即是A$="A"。

我在程序中是这麽处理的。行不行，试试就知道了。

6.随机产生一个大写字母的VB.NET的表达式是_______(Int(Rnd()*26)+65)。

Chr

用这个函数，将数值转换为字符。

生成的随机数是在大写字母A与Z之间的asc码值，用CHR函数转为相应字符。

怎么用VB.NET 编写大小写转化程序

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress e.KeyChar 使用参数e来控制输入字符 End Sub 追问： 能给出大小写切换程序的整段 源代码 吗 回答： 我不明白你的大小写切换程序是要实现什么功能 是输入 大写 变小写吗？ 追问： 是的 回答： If e.KeyChar.IsLower(e.KeyChar) = True Then e.KeyChar.ToUpper(e.KeyChar) 或 If e.KeyChar.IsUpper(e.KeyChar) = True Then e.KeyChar.ToLower(e.KeyChar)

用VB.NET实现人民币大小写转换工具 （互相转换）

Public Function je(ByVal szje As Double) As String

Dim s As String = ""

Dim sz() As String = {"零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"}

Dim dw() As String = {"圆", "拾", "佰", "千", "万", "拾", "佰", "仟", "拾", "佰", "仟"}

If szje 0 Then

s = "负"

szje = Math.Abs(szje)

End If

Dim zh() As String = Split(Str(szje), ".")

If zh.Length 2 Then

Return "ERROR:格式错"

Exit Function

End If

zh(0) = Trim(zh(0))

zh(1) = Trim(zh(1))

Dim i As Integer

For i = 1 To Len(zh(0))

s = s sz(Val(Mid(zh(0), i, 1))) dw(Len(zh(0)) - i)

Next

For i = 1 To Len(zh(1))

s = s sz(Val(Mid(zh(1), i, 1))) Choose(i, "角", "分", "厘", "毫")

Next

s = s "整"

Return s

End Function

vb.net大小写字母转换

Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click

Dim s As String = "0Ff0ajkh04624F"

Dim i As Integer = 0

Dim sTemp As String = ""

Dim ss As String = ""

For i = 1 To Strings.Len(s)

sTemp = Mid(s, i, 1)

If Asc(sTemp) = 65 And Asc(sTemp) = 90 Then

sTemp = LCase(sTemp)

ElseIf Asc(sTemp) = 95 And Asc(sTemp) = 122 Then

sTemp = UCase(sTemp)

Else

sTemp = sTemp

End If

ss = ss sTemp

Next

MsgBox(ss)

End Sub

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 = 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

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