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我在 DGV 上的绑定源有问题。消息是“DataMember Property 'nodes' cannot be found on the dataSource” 将表设置为数据源后，列数为 14。错误发生在线nodesDataGridView.DataSource = bsNodes。如果我在错误之前中断然后将鼠标悬停在 ds 上，它确实表明表节点在数据源中。我已经使用与此类似的代码来设置其他 DGV，但我看不出这有任何区别。

如果我删除这些语句，我不会得到错误，但它当然没有被过滤）：

        nodesDataGridView.DataSource = bsNodes
        bsNodes.Filter = "company_number = " & Globals.customer_id

我可能应该提到我在网格完成并工作后添加了 company_number。它是为单个公司代码设置的，但现在我必须添加支持数据库中多个公司的要求。

有任何想法吗？

谢谢，

维克

' Setup objects for loading the summary grid
Dim sqlNodes As String = "Select *From nodes order by display_sequence"
Dim comm As MySqlCommand = New MySqlCommand(sqlNodes, m_cn1)
Dim daNodes As MySqlDataAdapter = New MySqlDataAdapter(comm)
Dim dsNodes As DataSet = New DataSet()
dim bsNodes As New BindingSource

    Try
        AddHandler ButtonSaveChanges.Click, AddressOf ButtonSaveChanges_Click
        dsNodes.Clear()
        daNodes.Fill(dsNodes, "nodes")
        m_cn1.Close()
        nodesDataGridView.DataSource = dsNodes
        nodesDataGridView.DataMember = "nodes"
        bsNodes.DataSource = dsNodes.Tables("nodes")
        Debug.Print("nodes column count is " & nodesDataGridView.ColumnCount)
        nodesDataGridView.DataSource = bsNodes
        bsNodes.Filter = "company_number = " & Globals.customer_id

    Catch ex As Exception
        MessageBox.Show("Failed to load summary grid" & vbCrLf & vbCrLf & ex.ToString)
    End Try
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1 回答 1

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尝试像这样过滤

bsNodes.Filter = "company_number = '" & Globals.customer_id.ToString() & "'"

编辑：

    bsNodes.DataSource = dsNodes.Tables("nodes")
    nodesDataGridView.DataSource = bsNodes '<- you set dsNodes(Dataset) this should be the BindingSource not Dataset
    nodesDataGridView.DataMember = "nodes"
    Debug.Print("nodes column count is " & nodesDataGridView.ColumnCount)
    'nodesDataGridView.DataSource = bsNodes
    bsNodes.Filter = "company_number = '" & Globals.customer_id.ToString() & "'"
于 2012-12-29T04:25:30.500 回答