AutoComplete ComboBox C#
本文关键字:ComboBox AutoComplete | 更新日期: 2023-09-27 17:49:18
我正在加载巨大的数据库从excel(约2000项)到组合框。例如CD标题。然后我选择1 CD标题从这2000。我想使用这里的自动完成,但我不知道如何…
// Loading items from Excel
for (rCnt = 2; rCnt <= range.Rows.Count; rCnt++)
{
for (cCnt = 1; cCnt < 2; cCnt++)
{
str = Convert.ToString(saRet[rCnt,cCnt]);
// Loading items to ComboBox
ReferenceCombo.Items.Add(str);
}
在表单中,您需要为ComboBox设置两个属性:
AutoCompleteMode应该是建议,追加,或建议追加。我推荐建议追加。
AutoCompleteSource应该是ListItems
这个方法为您做了
private void LoadStuffNames()
{
try
{
string Query = "select stuff_name from dbo.stuff";
string[] names = GetColumnData_FromDB(Query);
comboName.AutoCompleteMode = AutoCompleteMode.Suggest;
comboName.AutoCompleteSource = AutoCompleteSource.CustomSource;
AutoCompleteStringCollection x = new AutoCompleteStringCollection();
if (names != null && names.Length > 0)
foreach (string s in names)
x.Add(s);
comboName.AutoCompleteCustomSource = x;
}
catch (Exception ex)
{
}
finally
{
}
}
和实现"GetColumnData_FromDB"如您所愿
除了设置大约10分钟前John引用的属性之外,这里是我用来绑定我的组合框的一些代码:
static BindingSource jp2bindingSource = new BindingSource();
void jp2FillCombo() {
ComboBox comboBox1 = new ComboBox();
comboBox1.Items.Clear();
object[] objs = jp2Databind(new DataSet(), "Table1", "Column1", true);
comboBox1.Items.AddRange(objs);
}
static object[] jp2Databind(DataSet dataset, string tableName, string columnName, bool unique) {
jp2bindingSource.DataSource = dataset;
jp2bindingSource.DataMember = tableName;
List<string> itemTypes = new List<string>();
foreach (DataRow r in dataset.Tables[tableName].Rows) {
try {
object typ = r[columnName];
if ((typ != null) && (typ != DBNull.Value)) {
string strTyp = typ.ToString().Trim();
if (!String.IsNullOrEmpty(strTyp)) {
if (unique) {
if (!itemTypes.Contains(strTyp)) {
itemTypes.Add(strTyp);
}
} else {
itemTypes.Add(strTyp);
}
}
}
} catch (Exception err) {
Global.LogError("Databind", err);
}
}
try {
itemTypes.Sort();
} catch (Exception err) {
Console.WriteLine(err.Message);
}
return itemTypes.ToArray();
}