[Solved] combo select

[sathies]

Hi,
 I have created combox  as below.

 <div>
    <asp:scriptmanager ID="Scriptmanager1" runat="server"></asp:scriptmanager>
        <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
        </telerik:RadAjaxManager>
        <div id="s" runat="server">
            <telerik:RadComboBox ID="RadComboBox4" EnableViewState="false" EnableItemCaching="true"
            EnableLoadOnDemand="true" runat="server"
            onitemsrequested="RadComboBox4_ItemsRequested">
            </telerik:RadComboBox>
               </div>
               <asp:Button ID="Button1" runat="server" Text="Ajax" onclick="Button1_Click" />
         <asp:SqlDataSource ID="SqlDataSource1"
ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
            ProviderName="System.Data.SqlClient"
            SelectCommand="SELECT * FROM Customers" runat="server"></asp:SqlDataSource>

    </div>

 protected void Page_Load(object sender, EventArgs e)
    {
        RadAjaxManager1.AjaxSettings.AddAjaxSetting(Button1, s, null);
    }

    protected void RadComboBox4_ItemsRequested(object o, Telerik.Web.UI.RadComboBoxItemsRequestedEventArgs e)
    {

        RadComboBox4.DataSourceID = "SqlDataSource1";
        string selectCommand = "SELECT * FROM CUSTOMERS WHERE CompanyName LIKE '" +
        e.Text + "%'";
        SqlDataSource1.SelectCommand = selectCommand;
        RadComboBox4.DataTextField = "CompanyName";
        RadComboBox4.DataValueField="CustomerID";
        RadComboBox4.DataBind();
    }

 protected void Button1_Click(object sender, EventArgs e)
    {
       RadComboBox4.Text = RadComboBox4.EmptyMessage;


    }

I am unable to select the same value from the combo box which I have selected previously.

Scenario: First I have selected a value from the combobox and then  I clicked the button (ajax implemented) which will empty the combobox. Again I want to select the same value from the combobox but unfortunately I am not able to select it. Is there is a problem in my code.

Am using telerik version:2009.2.701.35. Please help me at the earliest

Regards,
Sathies

[sathies]

Hi,
    Please any one provide me the solution. its very  urgent....

regards
sathies

[Schlurk]

You should probably use ViewState to save the item:

ViewState["selectedItem"] = RadComboBox4.SelectedValue;

And then to get the item back:

RadComboBoxItem myItem = ViewState["selectedItem"];

[sathies]

Hi Schlurk ,
                sorry for the late reply...
                My problem is; previously selected data is not displayed in the combo box.

                see the visual in the attached file
                step1: first i select a value (Bon app') from the combo and clicked the ajax button the combo gets clear
                step2: once again i tried to select  the same value (Bon app'), but the value is not displayed in combo as in step3

regards
sathies

[Schlurk]

I would suggest taking a deeper look into this ComboBox Demo, since it has the logic you are looking for and there are a few variations between its logic and what you are doing (specifically around databinding).

[sathies]

Hi Schlurk ,
             Thanks for the link, Its works now.

            I change the button clickevent as below (added ClearSection method)

protected void Button1_Click(object sender, EventArgs e)

{

RadComboBox4.Text = RadComboBox4.EmptyMessage;

RadComboBox4.ClearSelection();

}  regards sathies