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Radcombobox

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Vitaly
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Vitaly asked on 07 Nov 2013, 03:38 PM
Good morning,
is this possible to have radcombobox inside the other radcombobox.
If yes,could you please sent an example.

Thanks.

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Princy
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answered on 08 Nov 2013, 04:04 AM
Hi Vitaly,

Please have a look into the code snippet to show a RadComboBox inside another RadComboBox.

ASPX:
<telerik:RadComboBox ID="RadComboBoxMain" runat="server" Height="100px" Width="200px">
    <Items>
        <telerik:RadComboBoxItem Text="ITEM 1" Value="SELECT ITEM"></telerik:RadComboBoxItem>
        <telerik:RadComboBoxItem Text="ITEM 2" Value="SELECT ITEM"></telerik:RadComboBoxItem>
    </Items>
    <ItemTemplate>
        <telerik:RadComboBox Style="z-index: 7000;" ID="RadComboBoxInner" runat="server">
            <Items>
                <telerik:RadComboBoxItem runat="server" Text="ITEM1" Value="SELECT ITEM"></telerik:RadComboBoxItem>
                <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem2" Value="RadComboBoxItem2" />
            </Items>
        </telerik:RadComboBox>
    </ItemTemplate>
</telerik:RadComboBox>

Hope this will helps you.
Thanks,
Princy.
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Vitaly
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answered on 08 Nov 2013, 02:56 PM
Thanks for your quick respond.I should tell you in  more details what I need:

I need main RadCombobox with 3 items:
item 1:Text="TR"
item 2:Text="Processed"
item 3:Text="All"

And I need inner RadCombobox which will only come from first item in main RadCombobox:
Text="Approved"
Text="Entered"
Text="Trans"

In main RadCombobox item2 and item3 stays alone.

Thanks so much for your help.

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Princy
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answered on 11 Nov 2013, 11:52 AM
Hi Vitaly,

I guess you want to show the inner RadComboBox for only the First Item of the Main RadComboBox. Please have a look into the sample code I tried.

ASPX:
<telerik:RadComboBox ID="RadComboBoxMain" runat="server" Height="100px" Width="200px"
    OnSelectedIndexChanged="RadComboBoxMain_SelectedIndexChanged" AutoPostBack="true">
    <Items>
        <telerik:RadComboBoxItem Text="TR"></telerik:RadComboBoxItem>
        <telerik:RadComboBoxItem Text="Processed" Selected='true'></telerik:RadComboBoxItem>
        <telerik:RadComboBoxItem Text="All" />
    </Items>
</telerik:RadComboBox>

C#:
protected void RadComboBoxMain_SelectedIndexChanged(object sender, Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs e)
{
    if (e.Text == "TR")
    {
        RadComboBox inner = new RadComboBox();
        inner.ID = "innercombo";
        RadComboBoxItem item1 = new RadComboBoxItem();
        item1.Text = "Approved";
        RadComboBoxItem item2 = new RadComboBoxItem();
        item2.Text = "Entered";
        RadComboBoxItem item3 = new RadComboBoxItem();
        item3.Text = "Trans";
        item3.Selected = true;
        inner.Items.Add(item1);
        inner.Items.Add(item2);
        inner.Items.Add(item3);
        inner.Style.Add("z-index", "7000");
        RadComboBoxMain.Items[0].Controls.Add(inner); 
    }
}

Thanks,
Princy.
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Vitaly
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answered on 12 Nov 2013, 03:58 PM
Thanks again for your respond.
It is working but I do have question.
If I choose from inner combobox "Approved" how can I grab this value or text into C# programmatically?

Thanks for your help.
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Princy
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answered on 13 Nov 2013, 12:04 PM
Hi Vitaly,

You can try the following C# code.

C#:
RadComboBox combo1 = (RadComboBox)RadComboBoxMain.Items[0].FindControl("innercombo");
string text = combo1.SelectedItem.Text;

Since controls added from code behind are lost on postback you can add the inner combobox in the Page_Load() as follows.

C#:
protected void Page_Load(object sender, EventArgs e)
{
    if (RadComboBoxMain.SelectedItem.Text == "TR")
    {
        RadComboBox inner = new RadComboBox();
        inner.ID = "innercombo";
        RadComboBoxItem item1 = new RadComboBoxItem();
        item1.Text = "Approved";
        RadComboBoxItem item2 = new RadComboBoxItem();
        item2.Text = "Entered";
        RadComboBoxItem item3 = new RadComboBoxItem();
        item3.Text = "Trans";
        item3.Selected = true;
        inner.Items.Add(item1);
        inner.Items.Add(item2);
        inner.Items.Add(item3);
        inner.Style.Add("z-index", "7000");
        RadComboBoxMain.Items[0].Controls.Add(inner);
    }
}

Thanks,
Princy.
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