隋唐英雄紫嫣真名是谁:vb.net如何调用窗体之间的控件

来源:百度文库 编辑:高校问答 时间:2024/05/06 04:31:12
我有2个form,f1,上面有个treeview控件,f2,是f1的子窗口。目的:由treeview的node被check后显示一个新的f2,就是f2可能有多个实例;同时,我想f2被关掉后,就将f1上的treeview的对应node的check标记设成false!
这个问题就是怎么在窗体之间来影响控件,相互调用。我看msdn的例子是只能调用窗体的类方法,而没有控件调用的控制。
》》能不能详细点啊?我对你说的这个不是很了解,我以前用6。0太多了,思想还有点转不过来,哈哈!谢谢!
》》f2.控件或是f2->控件。这个应该和vc6的习惯一样。不行啊,我用的是vb.net2003,已经不支持6.o里面的这种做法了。
>>我已经换城vs2005了,他奶奶的。在2005里我已经解决了。谢谢。

其实这个问题可以这样的来解决:

如果你要调用窗体f2的控件你可以将被调用的控件看成是f2的构造函数来看。

我用的是vb.net2005,是不是我说的不太明白,

那我就给你一个在两个form之间互相访问控件的例子。

Public Class Form1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Form2.Show()
Form2.TextBox1.Text = "AAAAAA"
End Sub
End Class

这里的textbox1就是form2之上的文本控件

把被调控件作为调用窗体的构造函数的参数

Public Class ks
Inherits System.Windows.Forms.Form

#Region " Windows 窗体设计器生成的代码 "

Public Sub New()
MyBase.New()

'该调用是 Windows 窗体设计器所必需的。
InitializeComponent()

'在 InitializeComponent() 调用之后添加任何初始化

End Sub

'窗体重写 dispose 以清理组件列表。
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub

'Windows 窗体设计器所必需的
Private components As System.ComponentModel.IContainer

'注意: 以下过程是 Windows 窗体设计器所必需的
'可以使用 Windows 窗体设计器修改此过程。
'不要使用代码编辑器修改它。
Friend WithEvents tx As System.Windows.Forms.TextBox
Friend WithEvents ty As System.Windows.Forms.TextBox
Friend WithEvents tz As System.Windows.Forms.TextBox
Friend WithEvents ok As System.Windows.Forms.Button
Friend WithEvents l1 As System.Windows.Forms.Label
Friend WithEvents l2 As System.Windows.Forms.Label
Friend WithEvents l3 As System.Windows.Forms.Label
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.l1 = New System.Windows.Forms.Label
Me.l2 = New System.Windows.Forms.Label
Me.l3 = New System.Windows.Forms.Label
Me.tx = New System.Windows.Forms.TextBox
Me.ty = New System.Windows.Forms.TextBox
Me.tz = New System.Windows.Forms.TextBox
Me.ok = New System.Windows.Forms.Button
Me.SuspendLayout()
'
'l1
'
Me.l1.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(192, Byte), CType(255, Byte))
Me.l1.Location = New System.Drawing.Point(8, 8)
Me.l1.Name = "l1"
Me.l1.Size = New System.Drawing.Size(200, 16)
Me.l1.TabIndex = 0
'
'l2
'
Me.l2.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(192, Byte), CType(255, Byte))
Me.l2.Location = New System.Drawing.Point(8, 32)
Me.l2.Name = "l2"
Me.l2.Size = New System.Drawing.Size(200, 16)
Me.l2.TabIndex = 1
'
'l3
'
Me.l3.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(192, Byte), CType(255, Byte))
Me.l3.Location = New System.Drawing.Point(8, 56)
Me.l3.Name = "l3"
Me.l3.Size = New System.Drawing.Size(200, 16)
Me.l3.TabIndex = 2
'
'tx
'
Me.tx.Location = New System.Drawing.Point(8, 80)
Me.tx.Name = "tx"
Me.tx.Size = New System.Drawing.Size(200, 25)
Me.tx.TabIndex = 3
Me.tx.Text = "请输入x"
'
'ty
'
Me.ty.Location = New System.Drawing.Point(8, 104)
Me.ty.Name = "ty"
Me.ty.Size = New System.Drawing.Size(200, 25)
Me.ty.TabIndex = 4
Me.ty.Text = "请输入y"
'
'tz
'
Me.tz.Location = New System.Drawing.Point(8, 128)
Me.tz.Name = "tz"
Me.tz.Size = New System.Drawing.Size(200, 25)
Me.tz.TabIndex = 5
Me.tz.Text = "请输入z"
'
'ok
'
Me.ok.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(192, Byte), CType(255, Byte))
Me.ok.Location = New System.Drawing.Point(8, 160)
Me.ok.Name = "ok"
Me.ok.Size = New System.Drawing.Size(200, 64)
Me.ok.TabIndex = 6
Me.ok.Text = "ok"
'
'ks
'
Me.AutoScaleBaseSize = New System.Drawing.Size(8, 18)
Me.BackColor = System.Drawing.Color.FromArgb(CType(128, Byte), CType(128, Byte), CType(255, Byte))
Me.ClientSize = New System.Drawing.Size(216, 232)
Me.Controls.Add(Me.ok)
Me.Controls.Add(Me.tz)
Me.Controls.Add(Me.ty)
Me.Controls.Add(Me.tx)
Me.Controls.Add(Me.l3)
Me.Controls.Add(Me.l2)
Me.Controls.Add(Me.l1)
Me.Name = "ks"
Me.Text = "考试"
Me.ResumeLayout(False)

End Sub

#End Region
Dim x, y, z, a, b, c, d, aa, bb, cc As Single
Dim tts, alls As Single
Private Sub ks_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
x = Int(1 + 30 * Rnd())
y = Int(1 + 20 * Rnd())
z = Int(1 + 25 * Rnd())
a = Int(2 + 4 * Rnd())
b = Int(1 + a * 2 * Rnd())
c = Int(1 + b * 2 * Rnd())
d = Int(1 + c * 3 * Rnd())
aa = x + y + z
bb = a * x + b * y + c * z
cc = b * x + c * y + d * z
l1.Text = "x+y+z=" & Str(aa)
l2.Text = Str(a) & "x+" & Str(b) & "y+" & Str(c) & "z=" & Str(bb)
l3.Text = Str(b) & "x+" & Str(c) & "y+" & Str(d) & "z=" & Str(cc)
End Sub

Private Sub ok_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ok.Click
If Val(tx.Text) = x And Val(ty.Text) = y And Val(tz.Text) = z Then
tts = tts + 1
End If
alls = alls + 1
tx.Text = ""
ty.Text = ""
tz.Text = ""
x = Int(1 + (1000 ^ 0.5) * Rnd())
y = Int(1 + (10000 ^ 0.4) * Rnd())
z = Int(1 + (100000 ^ 0.3) * Rnd())
a = Int(2 + 4 * Rnd())
b = Int(1 + a * 2 * Rnd())
c = Int(1 + b * 2 * Rnd())
d = Int(1 + c * 3 * Rnd())
aa = x + y + z
bb = a * x + b * y + c * z
cc = b * x + c * y + d * z
l1.Text = "x+y+z=" & Str(aa)
l2.Text = Str(a) & "x+" & Str(b) & "y+" & Str(c) & "z=" & Str(bb)
l3.Text = Str(b) & "x+" & Str(c) & "y+" & Str(d) & "z=" & Str(cc)
End Sub

Private Sub ks_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Click
Dim lv As Single
If Not (alls = 0) Then
lv = Int(tts * 100000 / alls) / 1000
MsgBox(Str(lv) & "%", , "正确率")
tx.Visible = False
ty.Visible = False
tz.Visible = False
ok.Visible = False
l1.Visible = False
l2.Visible = False
l3.Visible = False
Else
MsgBox("答题!", , "答题!")
End If
End Sub
End Class