看来，对于第一次进入combobox，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。

 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); } } 

我这样解决了：

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 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).AutoCompleteMode = System.Windows.Forms.AutoCompleteMode.SuggestAppend; ((ComboBox)e.Control).AutoCompleteSource = AutoCompleteSource.ListItems; combo.Validated -= new EventHandler(combo_Validated); combo.Validated += new EventHandler(combo_Validated); } } public static object GetPropValue(object src, string propName) { if (src == null) return null; return src.GetType().GetProperty(propName).GetValue(src, null); } void combo_Validated(object sender, EventArgs e) { Object selectedItem = ((ComboBox)sender).SelectedItem; DataGridViewComboBoxColumn col = (DataGridViewComboBoxColumn)dataGridView1.Columns[dataGridView1.CurrentCell.ColumnIndex]; if (!String.IsNullOrEmpty(col.ValueMember)) dataGridView1.CurrentCell.Value = GetPropValue(selectedItem, col.ValueMember); else dataGridView1.CurrentCell.Value = selectedItem; }