Vb.net 在验证同一列和同一行中以前的DataGridViewTextBoxCell后，为设置新的DataGridViewComboxCell

我有这个

DataGridView

，它有一个

DataGridViewTextBoxColumn

，用户可以在其中键入一个数字，在他键入数字后，我执行搜索以查找该数字下以前的记录

我想显示这些记录，这样用户就可以选择其中一个，或者保持键入的值，这意味着他想创建一个新记录

为此，我想在用户完成键入后，用这些选项替换

datagridviewcomboxcell

的每个

datagridviewcontextboxcell

但是，当我尝试在System.Windows.Forms.dll中置换此替换时，它引发了此异常：“System.invalidoOperationException”。其他信息：该操作无效，因为它导致对函数SetCurrentCellAddressCore的重新输入调用。

这是我的代码（我已经尝试处理

CellLeave

而不是

CellValidated

）：

---

非常感谢

我已经将有问题的语句放入Lambda sub via.BeginInvoke中，这解决了问题，只是我不知道为什么

谁能给我解释一下它的原理吗？谢谢大家!

Private Sub DataGridViewDebitos_CellValidated(sender As Object, e As DataGridViewCellEventArgs) Handles DataGridViewDebitos.CellValidated
    DataGridViewDebitos.EndEdit(DataGridViewDataErrorContexts.Commit)
    If e.ColumnIndex = ColumnDebito.Index Then
        Dim cellDebito = DataGridViewDebitos.Rows(e.RowIndex).Cells(ColumnDebito.Index)
        Dim numDebito = String.Concat(If(cellDebito.Value, "").ToString.Where(Function(c) Char.IsLetterOrDigit(c)))
        If TypeOf cellDebito Is DataGridViewTextBoxCell AndAlso numDebito.Length >= 3 Then
            Dim prcsa As New List(Of JObject) 'In real version, prcsa is populated by an external function, but it doesn't affect the result
            Dim j = New JObject
            j.SetProperty("id", 0)
            j.SetProperty("nome", cellDebito.Value)
            prcsa.Insert(0, j) 'This option is always present, it allows user to keep simply what was typed
            'Exception hapens here
            DataGridViewDebitos.BeginInvoke(
                Sub()
                    DataGridViewDebitos(cellDebito.ColumnIndex, cellDebito.RowIndex) =
                        New DataGridViewComboBoxCell With {
                        .DataSource = prcsa,
                        .DisplayMember = "nome",
                        .FlatStyle = FlatStyle.Flat,
                        .ValueMember = "id",
                        .Value = prcsa(0)("id")}
                End Sub)
        End If
    End If
End Sub

Private Sub DataGridViewDebitos_CellValidated(sender As Object, e As DataGridViewCellEventArgs) Handles DataGridViewDebitos.CellValidated
    DataGridViewDebitos.EndEdit(DataGridViewDataErrorContexts.Commit)
    If e.ColumnIndex = ColumnDebito.Index Then
        Dim cellDebito = DataGridViewDebitos.Rows(e.RowIndex).Cells(ColumnDebito.Index)
        Dim numDebito = String.Concat(If(cellDebito.Value, "").ToString.Where(Function(c) Char.IsLetterOrDigit(c)))
        If TypeOf cellDebito Is DataGridViewTextBoxCell AndAlso numDebito.Length >= 3 Then
            Dim prcsa As New List(Of JObject) 'In real version, prcsa is populated by an external function, but it doesn't affect the result
            Dim j = New JObject
            j.SetProperty("id", 0)
            j.SetProperty("nome", cellDebito.Value)
            prcsa.Insert(0, j) 'This option is always present, it allows user to keep simply what was typed
            'Exception hapens here
            DataGridViewDebitos.BeginInvoke(
                Sub()
                    DataGridViewDebitos(cellDebito.ColumnIndex, cellDebito.RowIndex) =
                        New DataGridViewComboBoxCell With {
                        .DataSource = prcsa,
                        .DisplayMember = "nome",
                        .FlatStyle = FlatStyle.Flat,
                        .ValueMember = "id",
                        .Value = prcsa(0)("id")}
                End Sub)
        End If
    End If
End Sub