Rank 1
However, if I go into the combo box and right away I starting typing something which does not appear in the first page of results, the item is listed but I am no longer able to change the results and see the new matches appear in the list of the combo box.
The list is approx. 3,000 records, here are the relevant snips:
protected void RadComboBoxMedicationName_ItemsRequested(object sender, RadComboBoxItemsRequestedEventArgs e)
{
Database db = DatabaseFactory.CreateDatabase();
RadComboBox r = sender as RadComboBox;
DbCommand cmd = db.GetSqlStringCommand("SELECT Id, Description FROM refMedType WHERE Description LIKE '" + e.Context["Text"].ToString() + "%'");
DataTable data = (DataTable)(db.ExecuteDataSet(cmd)).Tables[0]; ;
try
{
int itemsPerRequest = 25;
int itemOffset = e.NumberOfItems;
int endOffset = itemOffset + itemsPerRequest;
if (endOffset > data.Rows.Count)
{
endOffset = data.Rows.Count;
}
if (endOffset == data.Rows.Count)
{
e.EndOfItems =
true;
}
else
{
e.EndOfItems =
false;
}
for (cint i = itemOffset; i < endOffset; i++)
{
r.Items.Add(
new RadComboBoxItem(data.Rows[i]["Description"].ToString(), data.Rows[i]["Description"].ToString()));
}
if (data.Rows.Count > 0)
{
e.Message =
String.Format("Items <b>1</b>-<b>{0}</b> out of <b>{1}</b>", endOffset.ToString(), data.Rows.Count.ToString());
}
else
{
e.Message =
"No matches";
}
}
catch (Exception ex)
{
e.Message =
"No matches";
}
}
<telerik:RadComboBox ID="RadComboBoxMedicationName" ShowWhileLoading="true" EmptyMessage="Enter medication name" Text='<%# Bind( "MedicationName" ) %>' LoadingMessage="Loading..." runat="server" Width="250px" Height="200px" AllowCustomText="True" ShowMoreResultsBox="true" EnableLoadOnDemand="True" MarkFirstMatch="True" OnItemsRequested="RadComboBoxMedicationName_ItemsRequested" EnableVirtualScrolling="true" />
<asp:RequiredFieldValidator ID="RequiredFieldValidatorMedicationName" runat="server" ControlToValidate="RadComboBoxMedicationName" Display="Dynamic" ErrorMessage="RequiredFieldValidator" ToolTip="Medication required."><br />* Medication required.</asp:RequiredFieldValidator>
4 Answers, 1 is accepted
Rank 1
Rank 1
I am using version "2010.1.309.20" and facing the same issue. Although the issue occurs very rarely say 1 out of 20 attempt.
It occurs specially when I type complete text matching an item (regardless of existence of item on same page or next or any other page, however, I found that issue occurs bit frequently for items not on same page.) As I type the complete text in filterbox, that makes the text unique to match exactly with one and only one item from the combo list.
I tried to play with grid on the demo site and was able to reproduce the issue.
http://demos.telerik.com/aspnet-ajax/controls/examples/integration/gridandcombo/defaultcs.aspx?product=grid
Rank 1
anyone?
Since this problem seems to be related to your specific scenario and you have already opened a support ticket, we will continue the discussion there.
If the problem turns to be a general one, I'll share the solution here.
Best wishes,
Dimitar Terziev
the Telerik team
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