看看这个吧
5.5 How can I put a combobox in a column of a datagrid?
http://www.syncfusion.com/FAQ/WinForms/FAQ_c44c.asp#q480q
5.5 How can I put a combobox in a column of a datagrid?
http://www.syncfusion.com/FAQ/WinForms/FAQ_c44c.asp#q480q
2、添加一个DataGrid control到窗体上。
3、加入以下代码 Imports System.Data.SqlClient Public Class Form1 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 '窗体重写处置以清理组件列表。 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 DataGrid1 As System.Windows.Forms.DataGrid <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() Me.DataGrid1 = New System.Windows.Forms.DataGrid() CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit() Me.SuspendLayout() ' 'DataGrid1 ' Me.DataGrid1.DataMember = "" Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText Me.DataGrid1.Location = New System.Drawing.Point(72, 56) Me.DataGrid1.Name = "DataGrid1" Me.DataGrid1.Size = New System.Drawing.Size(416, 184) Me.DataGrid1.TabIndex = 0 ' 'Form1 ' Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14) Me.ClientSize = New System.Drawing.Size(552, 285) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.DataGrid1}) Me.Name = "Form1" Me.Text = "Form1" CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).EndInit() Me.ResumeLayout(False) End Sub #End Region Public MyCombo As New ComboBox() Dim con As New SqlConnection("server=lihg;uid=sa;pwd=sa;database=northwind") Dim daEmp As New SqlDataAdapter("Select * From Employees", con) Public ds As New DataSet() Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load AddHandler MyCombo.TextChanged, AddressOf Ctrls_TextChanged 'Fill ComboBox list. MyCombo.Name = "MyCombo" MyCombo.Visible = False MyCombo.Items.Clear() MyCombo.Items.Add("Sales Representative") MyCombo.Items.Add("Inside Sales Coordinator") MyCombo.Items.Add("Vice President, Sales") MyCombo.Items.Add("Sales Manager") MyCombo.Items.Add("Flunky") daEmp.Fill(ds, "Employees") 'Set the RowHeight of the DataGrid to the height of the ComboBox. DataGrid1.PreferredRowHeight = MyCombo.Height DataGrid1.DataSource = ds DataGrid1.DataMember = "Employees" 'Add ComboBox to the Control collection of the DataGrid. DataGrid1.Controls.Add(MyCombo) End Sub Private Sub DataGrid1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles DataGrid1.Paint If DataGrid1.CurrentCell.ColumnNumber = 3 Then MyCombo.Width = DataGrid1.GetCurrentCellBounds.Width End If End Sub Private Sub Ctrls_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) If DataGrid1.CurrentCell.ColumnNumber = 3 Then MyCombo.Visible = False If DataGrid1.Item(DataGrid1.CurrentCell) & "" = "" Then SendKeys.Send("*") End If DataGrid1.Item(DataGrid1.CurrentCell) = MyCombo.Text End If End Sub Private Sub DataGrid1_CurrentCellChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGrid1.CurrentCellChanged If DataGrid1.CurrentCell.ColumnNumber = 3 Then MyCombo.Visible = False MyCombo.Width = 0 MyCombo.Left = DataGrid1.GetCurrentCellBounds.Left MyCombo.Top = DataGrid1.GetCurrentCellBounds.Top MyCombo.Text = DataGrid1.Item(DataGrid1.CurrentCell) & "" MyCombo.Visible = True Else MyCombo.Visible = False MyCombo.Width = 0 End If End Sub Private Sub DataGrid1_Scroll(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGrid1.Scroll MyCombo.Visible = False MyCombo.Width = 0 End Sub Private Sub DataGrid1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGrid1.Click MyCombo.Visible = False MyCombo.Width = 0 End Sub End Class4、修连接字符串Dim con As New SqlConnection("server=lihg;uid=sa;pwd=sa;database=northwind")，使能连接上数据库
5、F5运行
http://www.syncfusion.com/faq/winforms/Files/DataGridTextBoxCombo.zip