我正在从excel(大约2000项)加载庞大的数据库到组合框。例如CD标题。然后我从2000年选择1个CD标题。我想在这里使用自动完成,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);
}
答案 0 :(得分:24)
在表单上,您需要为ComboBox设置两个属性:
AutoCompleteMode应为Suggest,Append或SuggestAppend。我推荐SuggestAppend。
AutoCompleteSource应该是ListItems。
答案 1 :(得分:4)
这种方法适合你
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”
答案 2 :(得分:3)
除了在大约10分钟前设置John引用的属性之外,还有一些代码用于对我的组合框进行数据绑定:
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();
}