什么奇怪的行为在AutoComplete在DataGridViewCombobox列？ [英] What a strange behavior in AutoComplete in DataGridViewCombobox column?

问题描述

我使用（ EditingControlShowing ）事件在DataGridViewComboBox列中启用AutoComplete。

I am using the (EditingControlShowing) event to Enable AutoComplete in DataGridViewComboBox Column.

private void dataGridView1_EditingControlShowing(object sender,  DataGridViewEditingControlShowingEventArgs e)
{
    if (e.Control is DataGridViewComboBoxEditingControl)
    {
        ComboBox combo = (ComboBox)e.Control;
        ((ComboBox)e.Control).DropDownStyle = ComboBoxStyle.DropDown;
        ((ComboBox)e.Control).AutoCompleteSource = AutoCompleteSource.ListItems;
        ((ComboBox)e.Control).AutoCompleteMode =  System.Windows.Forms.AutoCompleteMode.SuggestAppend;
    }
}

但它有一个奇怪的行为，字符，然后我离开单元格（Tab或右键），值没有改变。

但是如果我重复，那么值会改变。
从此处，您可以下载源代码和（EXE ）

But it has a strange behavior, when I type some characters then I leave the cell (Tab or right key), the value did not change.
But if I repeat that, the value will change. From Here, you can download the source code and (EXE) video that explains the problem.

推荐答案

看来，对于组合框中的第一个条目，选项卡不再触发值的提交。不知道为什么会这样，但似乎处理 CurrentCellDirtyStateChanged 并提交编辑修复它。

It appears that for that first entry into the combobox the tab no longer triggers the commit of the value. No idea why this is so, but it appears that handling CurrentCellDirtyStateChanged and committing the edit fixes it.

void dataGridView1_CurrentCellDirtyStateChanged(object sender, EventArgs e)
{
    // You could also check here to see if the cell in question is the combobox
    if (dataGridView1.IsCurrentCellDirty)
    {
        dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);
    }
}

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