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vB.nEt 关于Button EnABlE的问题

在textbox_change事件设置一个flag如果有输入将flag设为true,然后再buttonclick事件则不去判断textbox中输入信息,否则像你这样判断 如果多个textbox就用多个flag

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Static f As Boolean = False If Not f Then f = True Button2.Hide() Button3.Show() End If End Sub Private Sub Button3_Cl...

if 条件 then 按钮名称.visible=trueelse 按钮名称.visible=falseendif

在该按纽的单击事件编写代码: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Me.Close() End Sub 在VB6的时候,使用:Unload me 在VB.NET里使用:Me.Close()

是这样的,VB6也会遇到这个问题,解决办法就是用一个全局变量作为“开关”,举例说明: Dim x as Boolean=False '设置一个开关 Form_Load事件: x=True 开始设置RadioButton ...... 设置结束 x=False End Sub RadioButton单击事件: If x=False Th...

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load For Each Item As Control In Controls If TypeOf Item Is Button Then AddHandler Item.Click, AddressOf Buts End If Next End Sub...

有两种方法: 1、 Dim a As New System.EventArgs() Dim b As New System.Object() Button1_Click(a, b) 2、 Button1.Pr……Click(中间那一段忘记了,是在“全部”里面的方法,请补充下)

按下按钮后,依次检查20个文本框,代码如下 Private Sub Button1_Click(sender As Object, _ e As EventArgs) Handles Button1.Click ' 检查TextBox1 是否包含 a If TextBox1.Text.Contains("a") Then TextBox1.Enabled = False Else TextBox1.E...

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.ClickTimer5.Enabled = Truetime = 1End SubPrivate Sub Timer5_Tick(sender As Object, e As EventArgs) Handles Timer5.Tick'Call Button1_Click(sender, e)'ti...

在该按纽的单击事件编写代码: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Me.Close() End Sub 在VB6的时候,使用:Unload me 在VB.NET里使用:Me.Close()

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