www.ctrt.net > VB.NET中怎么实现每单击一次按钮,文本框就多出现...

VB.NET中怎么实现每单击一次按钮,文本框就多出现...

Dim n As Integer, b As Integer, a(13) As Integer Private Sub Command1_Click() If b < 5 Then b = b + 1 x = Int(n * Rnd()) + 1 Text1.Text = Text1.Text & a(x) & " " a(x) = a(n) n = n - 1 Else Call Form_Load End If End Sub Private ...

这个定义放在查询按外面做全局 在那个下拉里面添加一样的就可以实现

Dim i As Integer Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click i = i + 1 If i = 1 Then TextBox1.Font = New System.Drawing.Font(TextBox1.Font, FontStyle.Bold) Else Te...

如果是用键盘来代替鼠标点击按钮,用下面的代码 Public Class Form1 Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown Select Case Chr(e.KeyValue) Case "A" Button1_Cli...

可以的呀??? Public Class Form1 Public a As Short = 1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click a = a + 1 Label1.Text = a End Sub End Class

设计界面双击那个按钮(自动跳到代码里) 然后输入 要显示时间的那个Label.Text = DateTime.Now.ToString()

又碰到你了。。 在 conn.Open() '打开连接' 之后,把内容读到数据集中,dataset和excel差不多,就可以直接操作数据了 Dim da As OleDbDataAdapter Dim ds As DataSet da = New OleDbDataAdapter(sql, conn) ds = New DataSet da.Fill(ds, "tbShe...

Private Sub TextBox1_KeyPress1(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress If e.KeyChar >= "A" And e.KeyChar = "a" And e.KeyChar

1)在窗体上布置一个TextBox和一个Command控件 2)窗体代码 Option ExplicitPrivate Sub Command1_Click() '选择文本框中所有文本 With Text1 .SelStart = 0 .SelLength = Len(Text1.Text) '让文本框获取焦点 .SetFocus End WithEnd SubPrivate ...

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim a = New System.Random() Textbox1.text=a.next(10)+a.next(10)+a.next(10)+a.next(10)+a.next(10)+a.next(10)+a.next(10)+...

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