C# 在列表框中按DisplayMember搜索
我有一个列表框,我这样填充:C# 在列表框中按DisplayMember搜索,c#,winforms,C#,Winforms,我有一个列表框,我这样填充: var dtCustomers = db.GetTableBySQL(query).AsEnumerable().Select(rows => new CustomersModel { Name = rows.Field<string>("Name"), ProjectKey = rows.Field<int>("ProjectKey") }); lstCustomers.Da
var dtCustomers = db.GetTableBySQL(query).AsEnumerable().Select(rows =>
new CustomersModel
{
Name = rows.Field<string>("Name"),
ProjectKey = rows.Field<int>("ProjectKey")
});
lstCustomers.DataSource = dtCustomers.ToList();
lstCustomers.DisplayMember = "Name";
lstCustomers.ValueMember = "ProjectKey";
lstCustomers.ClearSelected();
问题是它什么也找不到。我认为这是因为它是通过ValueMember而不是DisplayMember进行比较的。我可以按DisplayMember在列表中搜索吗?您可以对此使用模式匹配,因为基础项将是您的CustomerModel:
private void btnSearch_Click(object sender, EventArgs e)
{
lstCustomers.SelectedItems.Clear();
for (int i = lstCustomers.Items.Count - 1; i >= 0; i--)
{
if (lstCustomers.Items[i].ToString().ToLower().Contains(txtSearch.Text.ToLower()))
{
lstCustomers.SetSelected(i, true);
}
}
lblitems.Text = lstCustomers.SelectedItems.Count.ToString() + "items found";
}
private void btnSearch_Click(object sender, EventArgs e)
{
lstCustomers.SelectedItems.Clear();
int matchCount = 0;
for (int i = lstCustomers.Items.Count - 1; i >= 0; i--)
{
if (lstCustomers.Items[i] is CustomersModel customer &&
customer.Name.IndexOf(txtSearch.Text, StringComparison.OrdinalIgnoreCase) > -1)
{
matchCount++;
lstCustomers.SetSelected(i, true);
}
}
lblItems.Text = $"{matchCount} item{(matchCount > 1 ? "s" : "")} found";
}