【问题标题】:AutoComplete ComboBox C#自动完成组合框 C#
【发布时间】:2011-07-31 01:25:39
【问题描述】:
我正在将庞大的数据库从 excel(大约 2000 个项目)加载到组合框。例如 CD 标题。然后我从这个 2000 中选择 1 张 CD 标题。我想在这里使用自动完成功能,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);
}
【问题讨论】:
标签:
c#
winforms
excel
autocomplete
【解决方案2】:
这个方法帮你搞定
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
{
}
}
并根据需要实现“GetColumnData_FromDB”
【解决方案3】:
除了设置 John 大约 10 分钟前引用的属性之外,这里还有一些我用来数据绑定我的组合框的代码:
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();
}