ComboBox with CheckBox in Q2 2011

4 posts, 1 answers
  1. Marco
    Marco avatar
    25 posts
    Member since:
    Oct 2010

    Posted 22 Jul 2011 Link to this post

    Hi All,

    　

    In the new 2011 Q2 controls the Checkbox in RadCombo is introduced.

    　

    I'm adding Items to the Control by Code, Always Select the first one, which cant be deselected

    So on the Item_created i do the following:

    if e.item.index = 0 then

    e.item.checked = true

    e.item.enabled = false

    endif

    　

    which results in a greyed out Text, but still enabled Checkbox.
    See attached picture

    Kind regards Marco

  2.
  3. Kalina
    Admin
    Kalina avatar
    918 posts

    Posted 22 Jul 2011 Link to this post

    Hello Marco,

    I created a test page I tried to reproduce the issue that you describe, but without success.

    Please take a look at the code that I've used (I suppose that there is something different in your page that causes the issue):
    <body>
        <form id="form1" runat="server">
        <div>
            <asp:ScriptManager ID="ScriptManager1" runat="server" />
            <telerik:RadComboBox ID="RadComboBox1" runat="server"
                CheckBoxes="true" >    
            </telerik:RadComboBox>
        </div>
        </form>
    </body>


    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
          this.RadComboBox1.Items.Add(new RadComboBoxItem("Session 1", "1"));
          this.RadComboBox1.Items.Add(new RadComboBoxItem("Session 2", "2"));
        }
     
    }

    Could you please provide us more details about your implementation and paste here a simplified working code that represents it?
    How do you populate the RadComboBox with items?

    Best wishes,
    Kalina
    the Telerik team

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  5. Marco
    Marco avatar
    25 posts
    Member since:
    Oct 2010

    Posted 22 Jul 2011 Link to this post

    Dear Kalina,

    I updated your example to the following:

    asxp:
    <form>
    <telerik:RadScriptManager ID="RadScriptManager1" runat="server">
    </telerik:RadScriptManager>
    <telerik:RadComboBox ID="RadComboBox1" runat="server" CheckBoxes="true">
    </telerik:RadComboBox>
    </form>
    Server-Side code:
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Me.RadComboBox1.Items.Add(New RadComboBoxItem("Session 1", "1"))
        Me.RadComboBox1.Items.Add(New RadComboBoxItem("Session 2", "2"))
    End Sub
    Protected Sub RadComboBox1_ItemCreated(sender As Object, e As Telerik.Web.UI.RadComboBoxItemEventArgs) Handles RadComboBox1.ItemCreated
        If e.Item.Index = 0 Then
            e.Item.Checked = True
            e.Item.Enabled = False
        End If
    End Sub

    In the ItemCreated event I make the first in the list Checked  = true and Enabled = false
    The text is disabled but the checkbox is not, I can still change the checkbox
    I assume that the checkbox also has to be disabled or do I miss something else to disable the checkbox of that item?

    hopes this helps

    Best regards Marco
  7. Answer
    Kalina
    Admin
    Kalina avatar
    918 posts

    Posted 27 Jul 2011 Link to this post

    Hello Marco,

    Thank you for providing me a clear test case of the issue.
    I successfully reproduced it and it looks like a bug - so we will research it and log it for fixing.

    Let me suggest you overcome the issue by disable the RadComboBox item at client-side in this manner:
    <head runat="server">
        <title></title>
        <script type="text/javascript">
     
            function OnClientLoad(sender) {
                // disable the first item :
                sender.get_items().getItem(0).disable();
            }
        </script>
    </head>
    <body>
        <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
            <telerik:RadComboBox ID="RadComboBox1" runat="server"
                OnItemCreated="RadComboBox1_ItemCreated"
                OnClientLoad="OnClientLoad"
                CheckBoxes="true" >   
            </telerik:RadComboBox>
        </form>
    </body>

    protected void Page_Load(object sender, EventArgs e)
    {
        this.RadComboBox1.Items.Add(new RadComboBoxItem("Session 1", "1"));
        this.RadComboBox1.Items.Add(new RadComboBoxItem("Session 2", "2"));
    }
     
    protected void RadComboBox1_ItemCreated(object sender, Telerik.Web.UI.RadComboBoxItemEventArgs e)
    {
        if (e.Item.Index == 0)
        {
            e.Item.Checked = true;
        //  e.Item.Enabled = false;
        }
    }

    You will not need this workaround once we fix the issue.
    Thank you for taking your time to report this - please find your Telerik points updated.

    Kind regards,
    Kalina
    the Telerik team

    Browse the vast support resources we have to jump start your development with RadControls for ASP.NET AJAX. See how to integrate our AJAX controls seamlessly in SharePoint 2007/2010 visiting our common SharePoint portal.

  8.
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