//模糊查询Combobox
public void selectCombobox(ComboBox cb, List<string> listOnit)
{
//输入key之后返回的关键词
List<string> listNew = new List<string>();
//清空combobox
cb.Items.Clear();
//清空listNew
listNew.Clear();
//遍历全部备查数据
foreach (var item in listOnit)
{
if (item.ToLower().Contains(cb.Text.ToLower()))
{
//符合，插入ListNew
listNew.Add(item);
}
}
//combobox添加已经查询到的关键字
cb.Items.AddRange(listNew.ToArray());
//设置光标位置，否则光标位置始终保持在第一列，造成输入关键词的倒序排列
cb.SelectionStart = cb.Text.Length;
//保持鼠标指针原来状态，有时鼠标指针会被下拉框覆盖，所以要进行一次设置
Cursor = Cursors.Default;
}
private void DataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
var EditingControl = e.Control as ComboBox;
if (EditingControl != null)
{
//用个集合成员保持对combox的引用
if (ListCbx.Contains(EditingControl))
{ EditingControl = ListCbx.Find(x => x == EditingControl); }
else
{
EditingControl.Items.Clear();
EditingControl.Items.AddRange(new String[] { "Beijing", "Shanghai", "Shanghaiw", "Shangwhai", "Shawnghai", "Sheenghai", "Shangwwhai", "Guangzhou", "Wuhan", "李斌一", "李斌二", "Wuha", "Shenzhen" });
ListCbx.Add(EditingControl);
EditingControl.TextUpdate += EditingControl_TextChanged;
EditingControl.KeyDown += EditingControl_KeyDown;
}
}
}
【winform】解决datagridview里放combox,combox不能按下键快速选择的问题
原文：https://www.cnblogs.com/HelloQLQ/p/14902296.html