在VB(Visual Basic)中重新输入数据的编程可以通过多种方式实现,具体取决于您想要实现的功能和数据结构。以下是几个示例代码,分别展示了如何在VB中实现数据重新输入的功能:
示例1:使用输入框重新输入单个数值
```vb
Private Sub Command1_Click()
Dim n As String
Do
n = InputBox("请输入一个整数:")
If IsNumeric(n) And Val(n) Mod 2 = 0 Then
MsgBox "输入正确"
Exit Do
Else
MsgBox "数据错误,请重新输入"
End If
Loop
End Sub
```
示例2:使用输入框重新输入一组数值
```vb
Private Sub Command1_Click()
Dim i As Integer
Dim js As Integer, os As Integer, x As Integer
js = 0
os = 0
For i = 1 To 20
x = Val(InputBox("请输入20个整数:"))
If x Mod 2 = 0 Then
os = os + 1
Else
js = js + 1
End If
Next i
MsgBox "偶数个数: " & os & ", 奇数个数: " & js
End Sub
```
示例3:在Excel VBA中重新输入数据
```vba
Sub MatchInput()
Dim i, j, m, k As Long
Dim msg, style, title, ans
On Error Resume Next
Set mysheet1 = ThisWorkbook.Worksheets("Sheet1")
Set mysheet2 = ThisWorkbook.Worksheets("Sheet2")
msg = "该用户信息已经存在,是否替换?"
style = vbYesNoCancel + vbDefaultButton3
title = "温馨提示"
m = Application.WorksheetFunction.Match(mysheet1.Cells(2, 2), mysheet2.Range("A1:A1000"), 0)
If m >= 1 Then
ans = MsgBox(msg, style, title)
If ans = vbYes Then
For j = 1 To 10
temp = a(j)
a(j) = a(11 - j)
a(10 - j + 1) = temp
Next j
End If
End If
End Sub
```
示例4:在VB中创建输入框并获取输入
```vb
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim userInput As String
userInput = TextBox1.Text
' 使用userInput变量进行后续操作
End Sub
```
这些示例展示了如何在VB中实现数据重新输入的不同方法。您可以根据具体需求选择合适的方法进行编程。