vb.net制作控件 vbnet panel控件

VB.NET中如何动态创建控件

Option Explicit

Private WithEvents NewTextBox As TextBox

'通过使用WithEvents关键字声明一个对象变量为新的命令按钮

Private Sub Command1_Click()

If NewTextBox Is Nothing Then

    Set NewTextBox = Controls.Add("VB.TextBox", "cmdNew", Form1)

    NewTextBox.Move 200, 200

     NewTextBox.Width = Form1.Width - 450

      NewTextBox.Height = Form1.Height - 1400

      NewTextBox.Visible = True

End If

End Sub

Private Sub Command2_Click()

If NewTextBox Is Nothing Then

    Exit Sub

Else

   Controls.Remove NewTextBox

   Set NewTextBox = Nothing

   End If

End Sub

VB.net 如何编写用户控件？

Public Class UserControl1

#Region "变量"

Dim Down_Color As Color = Color.Blue

Dim UP_Color As Color = Color.Gray

Dim Mode As Short = 0

Dim flag As Boolean

Dim offset_X As Integer

Dim offset_Y As Integer

Dim Mouse_P As Point

#End Region

#Region "属性"

'按下颜色

Public Property _DownColor As Color

Get

Return Down_Color

End Get

Set(ByVal value As Color)

Down_Color = value

End Set

End Property

'弹起颜色

Public Property _UpColor As Color

Get

Return UP_Color

End Get

Set(ByVal value As Color)

UP_Color = value

End Set

End Property

'滑动模式 0-横 1-竖

Public Property _Mode As Short

Get

Return Mode

End Get

Set(ByVal value As Short)

Mode = value

End Set

End Property

#End Region

Private Sub UserControl1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Me.BackColor = UP_Color

End Sub

'鼠标按下

Private Sub UserControl1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseDown

Me.BackColor = Down_Color

Mouse_P = e.Location

flag = True

End Sub

'鼠标移动

Private Sub UserControl1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseMove

If flag = False Then Exit Sub

Select Case Mode

Case 0 '横向·

offset_X = e.X - Mouse_P.X

If Me.Location.X + offset_X + Me.Width = Me.ParentForm.Width Or Me.Location.X + offset_X = 0 Then

flag = False

Else

Me.Location = New Point(Me.Location.X + offset_X, Me.Location.Y)

End If

Case 1 '竖向·

offset_Y = e.Y - Mouse_P.Y

If Me.Location.Y + offset_Y + Me.Height + 30 = Me.ParentForm.Height Or Me.Location.Y + offset_Y = 0 Then

flag = False

Else

Me.Location = New Point(Me.Location.X, Me.Location.Y + offset_Y)

End If

End Select

End Sub

'鼠标弹起

Private Sub UserControl1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseUp

Me.BackColor = UP_Color

flag = False

End Sub

End Class

vb.net 怎样创建控件数组？

Dim Str(20) As String '20数据元素

Dim Text(20) As TextBox

Dim n As Integer = 0

For Each i In Text

i = New TextBox '实例化

i.Location = New Point(50, n * 20)

Me.Controls.Add(i) '添加窗体

Dim Index As Integer = i.TabIndex '没index属性

Str(n) = Index

i.Text = Str(n) 'str数组值赋值给文本框

n += 1

Next

如何用VB.NET的知识制作带*的文本框控件

添加一个TextBox控件（比如叫TextBox1）。

类似于Lable控件vb.net制作控件的功能，你可以修改TextBox控件的Text属性来达到目的：

不是在设计器里修改，而是在代码中用“TextBox1.Text="你想要显示的字符串";”这样的语句，这样就可以在程序运行时改变显示的内容。

设置或者取消星号，你可以通过代码修改TextBox1的PasswordChar属性，跟上面的是类似的：

在其他的控件的事件中比如Button的Click事件中修改——“TextBox1.PasswordChar="";//不显示***”

“TextBox1.PasswordChar="*（或者任何你想要的字符）";//显示为***”

至于什么时候改就完全随你的意思vb.net制作控件了。

关于vb.net制作控件和vbnet panel控件的介绍到此就结束了，不知道你从中找到你需要的信息了吗 ？如果你还想了解更多这方面的信息，记得收藏关注本站。