我面对它似乎是一个非常简单的要求，我需要一个未绑定的组合框列来保存选项列表＆＃39;是＆＃39;并且没有＆＃39;。在组合框中，“是”和“否”是分别对应于ValueMembers 1和0的DisplayMembers，而ValueMembers又是数据库表字段中保存的值。我在应用程序中广泛使用绑定的组合框列，并且非常熟悉构建它们，但是我不知道如何在datagridview应用程序中合并这个简单的列表功能。有人可以用一些示例代码让我摆脱困境。
感谢您的反馈Plutonix。 DGV绑定到基础表。希望以下代码可以让您了解我试图实现的目标。与此帖特别相关的代码是对PopulateUnboundComboBox的调用（comboBoxCol，{＆＃34;是＆＃34;，＆＃34; No＆＃34;}）。
Private Sub GetData()
Const procName As String = "GetData()"
Dim myValue As String = ""
Dim myDataSource As Integer = 0
Try
'First clear the existing grid
With Me.uxGrid
If .ColumnCount > 0 Then
'clear the grid
ClearGrid(Me.uxGrid)
End If
End With
_Logger.SendLog(Me.Name & "." & procName & " - Fetching device data.", NLog.LogLevel.Trace)
'Get the data from the database
If Not _dataSourceID = 0 Then
_sqlStatement = "SELECT ID, TEXT, CATEGORY, MOUNTING, DATASOURCEID, TANALYSIS" & _
" FROM P_TBL_DEVICE WHERE DATASOURCEID = " & _dataSourceID
_criteria = "WHERE DATASOURCEID = " & _dataSourceID
Else
_sqlStatement = ""
_criteria = ""
End If
_myDeviceMngr = New DeviceManager(_currentDB, _userName, _myPwd)
'Now get the latest data
_myDataSet = _myDeviceMngr.GetData(_sqlStatement)
_Logger.SendLog(Me.Name & "." & procName & " - Device data fetch completed.", NLog.LogLevel.Trace)
'Update the display
Call BuildGrid(_myDataSet, uxGrid)
Catch ex As Exception
Beep()
MsgBox(ex.Message, MsgBoxStyle.Exclamation, System.Windows.Forms.Application.ProductName)
_Logger.SendLog(ex.Message & ". Thrown in module " & Me.Name.ToString & "." & procName, NLog.LogLevel.Error, ex)
Finally
Call System.GC.Collect()
End Try
End Sub
Private Sub BuildGrid(ByVal myDataSet As DataSet, ByVal myGrid As DataGridView)
Dim myTable As New System.Data.DataTable
Dim myColCount As Integer
Dim comboBoxCol As DataGridViewComboBoxColumn
Dim readOnlyCellStyle As New DataGridViewCellStyle
Dim textBoxCol As DataGridViewTextBoxColumn
Dim gridObject As Object = Nothing
Const procName As String = "BuildGrid"
readOnlyCellStyle.ForeColor = Color.Gray
Try
_Logger.SendLog(Me.Name & "." & procName & " - Building device data grid.", NLog.LogLevel.Trace, Nothing)
myTable = myDataSet.Tables(0)
With myGrid
'Now add the columns to the grid
Dim column As System.Data.DataColumn
For Each column In myDataSet.Tables(0).Columns
'We dont want to include the changedon and changedby fields in the grid build
If column.ColumnName.IndexOf("CHANGED") = -1 Then
Select Case column.ColumnName
Case "DATASOURCEID"
gridObject = New Object
comboBoxCol = New DataGridViewComboBoxColumn
'First create the comboboxcolumn for the column
'Populate combobox
PopulateScadaSourceComboBoxCol(comboBoxCol)
comboBoxCol.DataPropertyName = "DATASOURCEID"
comboBoxCol.HeaderText = "SCADA SOURCE"
comboBoxCol.AutoSizeMode = DataGridViewAutoSizeColumnsMode.AllCells
comboBoxCol.DisplayStyle = DataGridViewComboBoxDisplayStyle.Nothing
gridObject = comboBoxCol
Case "TEXT"
textBoxCol = New DataGridViewTextBoxColumn
gridObject = textBoxCol
'Now add the columns to the grid
gridObject.DataPropertyName = column.ColumnName.ToString
gridObject.HeaderText = column.ColumnName.Replace("TEXT", "DEVICE")
gridObject.name = column.ColumnName.Replace("TEXT", "DEVICE")
gridObject.AutoSizeMode = DataGridViewAutoSizeColumnsMode.AllCells
Case "CATEGORY"
textBoxCol = New DataGridViewTextBoxColumn
gridObject = textBoxCol
'Now add the columns to the grid
gridObject.DataPropertyName = column.ColumnName.ToString
gridObject.HeaderText = "CATEGORY"
gridObject.name = "CATEGORY"
gridObject.AutoSizeMode = DataGridViewAutoSizeColumnsMode.AllCells
Case "MOUNTING"
textBoxCol = New DataGridViewTextBoxColumn
gridObject = textBoxCol
'Now add the columns to the grid
gridObject.DataPropertyName = column.ColumnName.ToString
gridObject.HeaderText = "MOUNTING"
gridObject.name = "MOUNTING"
gridObject.AutoSizeMode = DataGridViewAutoSizeColumnsMode.AllCells
Case "TANALYSIS"
comboBoxCol = New DataGridViewComboBoxColumn
'First create the comboboxcolumn for the column
'Populate combobox
PopulateUnboundComboBox(comboBoxCol, {"Yes", "No"})
comboBoxCol.DataPropertyName = "TANALYSIS"
comboBoxCol.HeaderText = "TELECONTROL ANALYSIS"
comboBoxCol.AutoSizeMode = DataGridViewAutoSizeColumnsMode.AllCells
comboBoxCol.DisplayStyle = DataGridViewComboBoxDisplayStyle.Nothing
gridObject = comboBoxCol
Case Else
textBoxCol = New DataGridViewTextBoxColumn
gridObject = textBoxCol
'Now add the columns to the grid
gridObject.DataPropertyName = column.ColumnName.ToString
gridObject.HeaderText = "ID"
gridObject.name = "ID"
gridObject.AutoSizeMode = DataGridViewAutoSizeColumnsMode.AllCells
End Select
'Now add the textbox columns to the grid
'gridObject.DataPropertyName = column.ColumnName.ToString
'gridObject.AutoSizeMode = DataGridViewAutoSizeColumnsMode.AllCells
.Columns.Add(gridObject)
End If
Next
'Set grid default styles/values
.Font = New System.Drawing.Font("Arial", 10, FontStyle.Regular)
.AllowUserToResizeColumns = True
.AllowUserToResizeRows = True
.AllowUserToAddRows = True
.ReadOnly = True
.AutoResizeRows()
.ClipboardCopyMode = DataGridViewClipboardCopyMode.EnableAlwaysIncludeHeaderText
'Now bind the datatable to the DGV datasource property
.DataSource = myTable
End With
_Logger.SendLog(Me.Name & "." & procName & " - Building of device data grid has been completed.", NLog.LogLevel.Trace, Nothing)
Catch ex As Exception
Throw
Finally
textBoxCol = Nothing
comboBoxCol = Nothing
readOnlyCellStyle = Nothing
GC.Collect()
End Try
End Sub
Private Sub PopulateUnboundComboBox(ByVal comboBoxCol As DataGridViewComboBoxColumn, byval valList() as string)
comboBoxCol.Name = "TANALYSIS"
comboBoxCol.DataSource = valList
comboBoxCol.ValueMember = ???
comboBoxCol.DisplayMember = ???
End Sub
EDITED //
好的，我已经取得了一些进展，似乎已经解决了我的问题。剩下的一个问题是DGV中的列正在显示“值会员”。 （1或0）而不是＆＃39; DisplayMember＆＃39; （是还是不是）。我已经在组合框列定义中检查了valuemember和displaymember属性，并且它们似乎已正确设置。以下是相关代码：
摘自上面列出的原始代码发布
...
Case "TANALYSIS"
gridObject = New Object
comboBoxCol = New DataGridViewComboBoxColumn
'First create the comboboxcolumn for the column
'Populate combobox
Dim item As New CBOItem
Dim itemList As New CBOItemList
item.ValueMember = 0
item.DisplayMember = "No"
itemList.Add(item)
item = New CBOItem
item.ValueMember = 1
item.DisplayMember = "Yes"
itemList.Add(item)
PopulateComboBox(comboBoxCol, itemList)
comboBoxCol.DataPropertyName = "TANALYSIS"
comboBoxCol.HeaderText = "TELECONTROL ANALYSIS"
comboBoxCol.AutoSizeMode = DataGridViewAutoSizeColumnsMode.AllCells
comboBoxCol.DisplayStyle = DataGridViewComboBoxDisplayStyle.Nothing
gridObject = comboBoxCol
...
Private Sub PopulateComboBox(ByRef comboBoxCol As DataGridViewComboBoxColumn, ByVal itemList As CBOItemList)
Dim tbl As DataTable = New DataTable
Dim row As DataRow
tbl.Columns.Add("ValueMember")
tbl.Columns.Add("DisplayMember")
row = tbl.NewRow
row.Item("ValueMember") = itemList(0).ValueMember
row.Item("DisplayMember") = itemList(0).DisplayMember
tbl.Rows.Add(row)
row = tbl.NewRow
row.Item("ValueMember") = itemList(1).ValueMember
row.Item("DisplayMember") = itemList(1).DisplayMember
tbl.Rows.Add(row)
comboBoxCol.ValueMember = tbl.Columns("ValueMember").ToString
comboBoxCol.DisplayMember = tbl.Columns("DisplayMember").ToString
comboBoxCol.DataSource = tbl
End Sub
亲切的问候 保罗J.