vb.net大写变小写 vb大写转小写,小写转大写

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

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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程序 大写字母转小写,小写转大写

'第一题

Private Sub Command1_Click()

a = InputBox("")

Select Case Asc(a)

Case Asc("a") To Asc("z")

Print UCase(a)

Case Asc("A") To Asc("Z")

Print LCase(a)

End Select

End Sub

'第二题

Private Sub Command1_Click()

a = Val(InputBox(""))

If (a Mod 4 = 0 And a Mod 100 0) Or a Mod 400 = 0 Then

Print a "是闰年"

Else

Print a "不是闰年"

End If

End Sub

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)


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