Hi,
using ASP.NET AJAX controls Q3 2009 I placed several rad comboboxes in a RadDock element. The RadDock should act as a collapsable search panel for a RadGrid on the same page. In the Page_Load event all comboboxes are filled with complete appropriate data. The data of some of them can be confined by the selection of others as in the continents/countries example (related comboboxes). I can't get that example work.
I've implemented the "relation" between a brand and project combo:
1.<telerik:RadComboBox ID="cboBrand" runat="server" AccessKey="B" Width="250px" Filter="Contains" 2. ToolTip="bla bla " OnClientSelectedIndexChanged="loadProjects"> 3. </telerik:RadComboBox> 4.<telerik:RadComboBox ID="cboProject" runat="server" AccessKey="P" Width="250px" Filter="Contains"5. AllowCustomText="false" EnableViewState="false" AutoPostBack="false" 6.EnableLoadOnDemand="false" OnItemsRequested="cboProject_ItemsRequested" OnClientItemsRequested="itemsLoaded"> 7.</telerik:RadComboBox>The according javascript functions reside in a special RadCodeBlock (an other block exists for context menu handling for the grid):
01.<telerik:RadCodeBlock ID="SearchComboHandler" runat="server"> 02. <script type="text/javascript"> 03. function loadProjects(combo, args) 04. { 05. varitem = args.get_item(); 06. var cboProject = $find("<%=cboProject.ClientID %>"); 07. cboProject.requestItems(item.get_value(), false); 09. } 10. 11. 12. function itemsLoaded(combo, eventArqs) 13. { 14. if (combo.get_items().get_count() > 0) 15. { 16. combo.set_text(combo.get_items().getItem(0).get_text()); 17. combo.get_items().getItem(0).highlight(); 18. } 19. } 20. </script> 21</telerik:RadCodeBlock>The items of the project combobox are requested as follows (The helper methods returns a data table. It works fine.):
1.protected void cboProject_ItemsRequested(object o, RadComboBoxItemsRequestedEventArgs e) 2.{ 3. cboProject.DataSource = DataHelper.AdminDataRead("project", Convert.ToInt32(e.Text)); 4. cboProject.DataTextField = "name"; 5. cboProject.DataValueField = "id"; 6. 7. cboProject.DataBind(); 8.}After selecting an item from the brand combobox the first appropriate project is shown. Further project entries are displayed only after I opened the project combobox two or three times. Debugging clearified that parameters and data/return values are correctly fetched and transmitted.
I've searched the examples, community and other online resources for two days, tried some of the offered solutions but, nothing worked. A hint what I'm doing wrong would be really helpful. If you need more details or code snippets please let me know about.
Thanks in advance,
Andreas
public
void ConfigureExport()
{
RadGrid1.ExportSettings.ExportOnlyData =
true;
RadGrid1.ExportSettings.IgnorePaging =
true;
RadGrid1.ExportSettings.OpenInNewWindow =
true;
RadGrid1.Columns.FindByUniqueName(
"PageNo").Display = false;
RadGrid1.Columns.FindByUniqueName(
"Mandatory").Display = false;
RadGrid1.Columns.FindByUniqueName("Question").ItemStyle.Width = Unit.Percentage(90);
RadGrid1.MasterTableView.GetColumn(
"Question").ItemStyle.Width = Unit.Percentage(90);
RadGrid1.Columns.FindByUniqueName(
"Answer").ItemStyle.Width = Unit.Percentage(10);
foreach (GridDataItem item in RadGrid1.Items)
{
item.Style[
"font-size"] = "4px";
item.Style[
"font-family"] = "Courier New"; //Set UNICODE font
item.Style[
"text-align"] = "center";
}
}
Thanks.