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RadDropDownList OnItemSelected is clearing the RadSplitter

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Splitter

This is a migrated thread and some comments may be shown as answers.

Erick asked on 25 Jun 2015, 09:09 PM

I have a RadSplitter with two Pane and one SplitBar. On one Pane I have a dropdownlist, which when selected should change a textbox visibility to true. However it is completely clearing both RadPanes and not displaying anything.

Here is the code:

<telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel1">

<telerik:RadSplitter ID="RadSplitter1" runat="server" Width="100%" Height="100%">

<telerik:RadPane ID="LeftPane" runat="server" Width="75%">

<h3>Orders</h3>

</telerik:RadPane>

<telerik:RadSplitBar ID="RadSplitBar1" runat="server" CollapseMode="Backward">

</telerik:RadSplitBar>

<telerik:RadPane ID="RightPane" runat="server" Width="25%">

<div style="padding-left:10px; padding-right:10px;padding-top:5px;">

<h4>Filters</h4>

<hr style="width:100%;" />

<table>

<tr>

<td><asp:Label ID="lblCustomer" runat="server" Text="Customer #"></asp:Label></td>

<td><telerik:RadDropDownList ID="ddlCustomer" runat="server" AutoPostBack="true" DefaultMessage="Select One.." OnItemSelected="ddlCustomer_ItemSelected"></telerik:RadDropDownList></td>

<td><telerik:RadTextBox ID="txtCust" runat="server" AutoPostBack="true" Visible="false"></telerik:RadTextBox></td>

</tr>

</table>

</div>

</telerik:RadPane>

</telerik:RadSplitter>

</telerik:RadAjaxPanel>


protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                ddlCustomer.DataSource = new List<string>() { "Cust1", "Cust2" };
                ddlCustomer.DataBind();
            }
        }
 
        protected void ddlCustomer_ItemSelected(object sender, Telerik.Web.UI.DropDownListEventArgs e)
        {
            if (ddlCustomer.SelectedItem != null)
                txtCust.Visible = true;
        }

Am I missing something?

RadDropDownList OnItemSelected is clearing the RadSplitter

1 Answer, 1 is accepted