189 8069 5689
list1.additem j 意思就是把j添加至list1列表中,这是在一个for 循环中，循环了10次，添加了10次 j，即 list1 中 有10列分别为：1,3,6,10,15,21,28,36,45,55
目前成都创新互联公司已为1000多家的企业提供了网站建设、域名、网页空间、绵阳服务器托管、企业网站设计、海安网站维护等服务，公司将坚持客户导向、应用为本的策略，正道将秉承"和谐、参与、激情"的文化，与客户和合作伙伴齐心协力一起成长，共同发展。
下面又来了一个循环， list1.removeitem 删除列，删除的是 list1.listcount - i ，list1.listcount 就是总列数为10，减去 i ，i 是1到4，即10-1，9-2，8-3，7-4 每减掉一次，list1.listcount 就少了一条记录。
(注意，list1.listcount-1 是最后一条记录)
减掉了第 9，7，5，3列
剩余为 1,3,6,15,28,45
结果为：3,15,28
'ListCount返回列表框中的项目总数
'ListCount-1是列表框中最后一个项目的索引号
'亏你提醒了，我写错了，上面修改了，第一个索引为0，最后一个为9.
'也就是，问题所问的第二列的索引为1，第四列的索引为3...
数组内容更新结束后，清空Datagridview，然后再重写Datagridview就可以了、
vb.net里没有像vb那样的控件数组。也就是说复制控件后粘贴没有提示你是否创建控件数组。
你可以试验下面的代码。
Form1.Designer.vb 设计器中的窗体代码如下，上面有六个button。最右边的用来改变前5个地text：
Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated() Partial Class Form1
#Region "Windows フォーム デザイナによって生成されたコード "
System.Diagnostics.DebuggerNonUserCode() Public Sub New()
MyBase.New()
'この呼び出しは、Windows フォーム デザイナで必要です。
InitializeComponent()
End Sub
'Form は、コンポーネント一覧に后処理を実行するために dispose をオーバーライドします。
System.Diagnostics.DebuggerNonUserCode() 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 フォーム デザイナで必要です。
Private components As System.ComponentModel.IContainer
Public ToolTip1 As System.Windows.Forms.ToolTip
Public WithEvents Command2 As System.Windows.Forms.Button
Public WithEvents _Command1_4 As System.Windows.Forms.Button
Public WithEvents _Command1_3 As System.Windows.Forms.Button
Public WithEvents _Command1_2 As System.Windows.Forms.Button
Public WithEvents _Command1_1 As System.Windows.Forms.Button
Public WithEvents _Command1_0 As System.Windows.Forms.Button
Public WithEvents Command1 As Microsoft.VisualBasic.Compatibility.VB6.ButtonArray
'メモ: 以下のプロシージャは Windows フォーム デザイナで必要です。
'Windows フォーム デザイナを使って変更できます。
'コード エディタを使用して、変更しないでください。
System.Diagnostics.DebuggerStepThrough() Private Sub InitializeComponent()
Me.components = New System.ComponentModel.Container
Me.ToolTip1 = New System.Windows.Forms.ToolTip(Me.components)
Me.Command2 = New System.Windows.Forms.Button
Me._Command1_4 = New System.Windows.Forms.Button
Me._Command1_3 = New System.Windows.Forms.Button
Me._Command1_2 = New System.Windows.Forms.Button
Me._Command1_1 = New System.Windows.Forms.Button
Me._Command1_0 = New System.Windows.Forms.Button
Me.Command1 = New Microsoft.VisualBasic.Compatibility.VB6.ButtonArray(Me.components)
CType(Me.Command1, System.ComponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
'
'Command2
'
Me.Command2.BackColor = System.Drawing.SystemColors.Control
Me.Command2.Cursor = System.Windows.Forms.Cursors.Default
Me.Command2.ForeColor = System.Drawing.SystemColors.ControlText
Me.Command2.Location = New System.Drawing.Point(235, 176)
Me.Command2.Name = "Command2"
Me.Command2.RightToLeft = System.Windows.Forms.RightToLeft.No
Me.Command2.Size = New System.Drawing.Size(65, 25)
Me.Command2.TabIndex = 5
Me.Command2.Text = "Change"
Me.Command2.UseVisualStyleBackColor = False
'
'_Command1_4
'
Me._Command1_4.BackColor = System.Drawing.SystemColors.Control
Me._Command1_4.Cursor = System.Windows.Forms.Cursors.Default
Me._Command1_4.ForeColor = System.Drawing.SystemColors.ControlText
Me.Command1.SetIndex(Me._Command1_4, CType(4, Short))
Me._Command1_4.Location = New System.Drawing.Point(16, 176)
Me._Command1_4.Name = "_Command1_4"
Me._Command1_4.RightToLeft = System.Windows.Forms.RightToLeft.No
Me._Command1_4.Size = New System.Drawing.Size(93, 25)
Me._Command1_4.TabIndex = 4
Me._Command1_4.Text = "Command1"
Me._Command1_4.UseVisualStyleBackColor = False
'
'_Command1_3
'
Me._Command1_3.BackColor = System.Drawing.SystemColors.Control
Me._Command1_3.Cursor = System.Windows.Forms.Cursors.Default
Me._Command1_3.ForeColor = System.Drawing.SystemColors.ControlText
Me.Command1.SetIndex(Me._Command1_3, CType(3, Short))
Me._Command1_3.Location = New System.Drawing.Point(16, 137)
Me._Command1_3.Name = "_Command1_3"
Me._Command1_3.RightToLeft = System.Windows.Forms.RightToLeft.No
Me._Command1_3.Size = New System.Drawing.Size(93, 25)
Me._Command1_3.TabIndex = 3
Me._Command1_3.Text = "Command1"
Me._Command1_3.UseVisualStyleBackColor = False
'
'_Command1_2
'
Me._Command1_2.BackColor = System.Drawing.SystemColors.Control
Me._Command1_2.Cursor = System.Windows.Forms.Cursors.Default
Me._Command1_2.ForeColor = System.Drawing.SystemColors.ControlText
Me.Command1.SetIndex(Me._Command1_2, CType(2, Short))
Me._Command1_2.Location = New System.Drawing.Point(16, 96)
Me._Command1_2.Name = "_Command1_2"
Me._Command1_2.RightToLeft = System.Windows.Forms.RightToLeft.No
Me._Command1_2.Size = New System.Drawing.Size(93, 25)
Me._Command1_2.TabIndex = 2
Me._Command1_2.Text = "Command1"
Me._Command1_2.UseVisualStyleBackColor = False
'
'_Command1_1
'
Me._Command1_1.BackColor = System.Drawing.SystemColors.Control
Me._Command1_1.Cursor = System.Windows.Forms.Cursors.Default
Me._Command1_1.ForeColor = System.Drawing.SystemColors.ControlText
Me.Command1.SetIndex(Me._Command1_1, CType(1, Short))
Me._Command1_1.Location = New System.Drawing.Point(16, 56)
Me._Command1_1.Name = "_Command1_1"
Me._Command1_1.RightToLeft = System.Windows.Forms.RightToLeft.No
Me._Command1_1.Size = New System.Drawing.Size(93, 25)
Me._Command1_1.TabIndex = 1
Me._Command1_1.Text = "Command1"
Me._Command1_1.UseVisualStyleBackColor = False
'
'_Command1_0
'
Me._Command1_0.BackColor = System.Drawing.SystemColors.Control
Me._Command1_0.Cursor = System.Windows.Forms.Cursors.Default
Me._Command1_0.ForeColor = System.Drawing.SystemColors.ControlText
Me.Command1.SetIndex(Me._Command1_0, CType(0, Short))
Me._Command1_0.Location = New System.Drawing.Point(16, 16)
Me._Command1_0.Name = "_Command1_0"
Me._Command1_0.RightToLeft = System.Windows.Forms.RightToLeft.No
Me._Command1_0.Size = New System.Drawing.Size(93, 25)
Me._Command1_0.TabIndex = 0
Me._Command1_0.Text = "Command1"
Me._Command1_0.UseVisualStyleBackColor = False
'
'Form1
'
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.BackColor = System.Drawing.SystemColors.Control
Me.ClientSize = New System.Drawing.Size(312, 213)
Me.Controls.Add(Me.Command2)
Me.Controls.Add(Me._Command1_4)
Me.Controls.Add(Me._Command1_3)
Me.Controls.Add(Me._Command1_2)
Me.Controls.Add(Me._Command1_1)
Me.Controls.Add(Me._Command1_0)
Me.Cursor = System.Windows.Forms.Cursors.Default
Me.Location = New System.Drawing.Point(4, 23)
Me.Name = "Form1"
Me.RightToLeft = System.Windows.Forms.RightToLeft.No
Me.Text = "Form1"
CType(Me.Command1, System.ComponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
#End Region
End Class
’==========================================
Form1中的代码如下：
Friend Class Form1
Inherits System.Windows.Forms.Form
Private Sub Command2_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles Command2.Click
Dim i As Object
'按钮标题数组。
Dim cArr() As String = New String() {"A", "B", "C", "D", "E", "F", "G"}
For i = 0 To Me.Command1.Count - 1
Me.Command1(i).Text = cArr(i)
Next
End Sub
End Class
可以,按照下面的例子
listbox1.DataSource = ds.Tables(0)'绑定数据
listbox1.DisplayMember = "mainmen" 'listbox里显示的内容
listbox1.ValueMember = "bumen" '内容对应的值