I have used the code of Telerik's Load on demand Combo box. I am trying to fecth the value of the SelectedItem,which I failed to fetch. Please see my code below and suggest me the solution.
[
WebMethod]
public static RadComboBoxData GetCompanyNames(RadComboBoxContext context)
{
DataSet data = GetData(context.Text);
RadComboBoxData comboData = new RadComboBoxData();
int itemOffset = context.NumberOfItems;
int endOffset = Math.Min(itemOffset + ItemsPerRequest, data.Tables[0].Rows.Count);
comboData.EndOfItems = endOffset == data.Tables[0].Rows.Count;
List<RadComboBoxItemData> result = new List<RadComboBoxItemData>(endOffset - itemOffset);
for (int i = itemOffset; i < endOffset; i++)
{
RadComboBoxItemData itemData = new RadComboBoxItemData();
itemData.Text = data.Tables[0].Rows[i][
"ClientName"].ToString();
itemData.Value = data.Tables[0].Rows[i][
"ClientId"].ToString();
result.Add(itemData);
}
comboData.Message = GetStatusMessage(endOffset, data.Tables[0].Rows.Count);
comboData.Items = result.ToArray();
return comboData;
}
protected void rcbClientName_ItemsRequested(object sender, RadComboBoxItemsRequestedEventArgs e)
{
DataSet data = GetData(e.Text);
int itemOffset = e.NumberOfItems;
int endOffset = Math.Min(itemOffset + ItemsPerRequest, data.Tables[0].Rows.Count);
e.EndOfItems = endOffset == data.Tables[0].Rows.Count;
for (int i = itemOffset; i < endOffset; i++)
{
RadComboBoxItemData itemData = new RadComboBoxItemData();
rcbClientName.Items.Add(
new RadComboBoxItem(data.Tables[0].Rows[i]["ClientName"].ToString(),
data.Tables[0].Rows[i][
"ClientName"].ToString()));
}
e.Message = GetStatusMessage(endOffset, data.Tables[0].Rows.Count);
}
private static string GetStatusMessage(int offset, int total)
{
if (total <= 0)
return "No Match";
return String.Format("Items <b>1</b>-<b>{0}</b> out of <b>{1}</b>", offset, total);
}
private static DataSet GetData(string text)
{
return TaxForms.GetClientNameAndId(text);
}
protected void btnSelectClient_Click(object sender, EventArgs e)
{
DisplaySelection(rcbClientName, txtClientId);
}
private void DisplaySelection(RadComboBox name, TextBox text)
{
txtClientId.Text = rcbClientName.SelectedValue;
}
1 Answer, 1 is accepted
The SelectedValue of the combobox should work in this case. Note that the SelectedItem will be null in load on demand scenario.
Greetings,
Veselin Vasilev
the Telerik team
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