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ClientSide API - what am I missing

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ComboBox

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

Guss asked on 24 May 2008, 10:34 AM

Hi there
I don't seem to get clientside stuff to work. What am I missing? (still running under trial)

Here is mu code:

    
            <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %> 
        
            <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %> 
        
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
        
            <html xmlns="http://www.w3.org/1999/xhtml"> 
        
            <head runat="server"> 
        
                <title>Untitled Page</title> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                <telerik:RadScriptManager ID="RadScriptManager1" runat="server"> 
        
                </telerik:RadScriptManager> 
        
                <div> 
        
                    <telerik:RadComboBox ID="RadComboBox1" runat="server" DataSourceID="SqlDataSource1" 
        
                        DataTextField="Text" DataValueField="Value" Skin="Vista"> 
        
                        <CollapseAnimation Type="OutQuint" Duration="200"></CollapseAnimation> 
        
                    </telerik:RadComboBox> 
        
                    <script type="text/javascript" language="javascript" > 
        
                    var combo = <%=RadComboBox1.ClientID %>; 
        
                    var projectId = combo.GetText(); 
        
                    alert(projectId); 
        
                    </script> 
        
                    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:RemoteSqlServerData %>" 
        
                        SelectCommand="SELECT [value], [text] FROM [vProject]"></asp:SqlDataSource> 
        
                </div> 
        
                </form> 
        
            </body> 
        
            </html>

It throws and error at combo.GetText();
Microsoft JScript runtime error: Object doesn't support this property or method

For the dynamixc content, it did resolve <%=...ClientId%>
var combo = RadComboBox1;
var projectId = combo.GetText();

when I do an alert(combo); it does return [object]..so I assume it worked correct up to here.

8 Answers, 1 is accepted

answered on 26 May 2008, 07:38 PM

Now when I do that I get
Microsoft JScript runtime error: 'null' is null or not an object, so $find didn't find the object.
I'm sure the error is caused by more than syntax.

Its like every client side event is not working.

take this example: it causing the same error.

<telerik:RadTreeView ID="RadTreeView1" runat="server" CheckBoxes="true">
<Nodes>
<telerik:RadTreeNode runat="server" Text="Node1">
<Nodes>
<telerik:RadTreeNode runat="server" Text="Node1.1">
</telerik:RadTreeNode>
</Nodes>
</telerik:RadTreeNode>
<telerik:RadTreeNode runat="server" Text="Node2">
<Nodes>
<telerik:RadTreeNode runat="server" Text="Node2.1">
</telerik:RadTreeNode>
<telerik:RadTreeNode runat="server" Text="Node2.2">
</telerik:RadTreeNode>
</Nodes>
</telerik:RadTreeNode>
</Nodes>
<CollapseAnimation Type="OutQuint" Duration="100"></CollapseAnimation>
<ExpandAnimation Duration="100"></ExpandAnimation>
</telerik:RadTreeView>

<script type="text/javascript" language="javascript">
var treeView = $find("<%=RadTreeView1.ClientID%>");
var selectedNode = treeView.get_selectedNode();
</script>

(Microsoft JScript runtime error: 'null' is null or not an object)

Accepted

answered on 27 May 2008, 05:22 AM

Hi Guss,

I suggest you execute the following javascript code in pageLoad event of the page.

For example:

    
            <script type="text/javascript" language="javascript">   
        
            function pageLoad()  
        
            {  
        
               var treeView = $find("<%=RadTreeView1.ClientID%>");   
        
               var selectedNode = treeView.get_selectedNode();   
        
            }  
        
            </script>

Before pageLoad is executed, RadControls for ASP.NET AJAX are still not loaded completely and ready to use. This is the reason for the error you received.

Also note that the script of the controls are loaded from web resources and you do not need to copy any folders.

If the problems still persist, please open a support ticket and send us a simple running project illustrating them so we can test it locally.

Regards,
Rosi
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

answered on 14 Jul 2008, 08:43 PM

Hi all,

I have a radcombobox and I have .js file that I included to reference all the client side functions. My problem is that I can't seem to be able to find a button I need to focus after the user has selected an item from the combobox.

I tried

function OnClientSelectedIndexChanged(item)
{
            //var mybutton = $find("<%=btnFiltrar.ClientID %>");
            //mybutton.focus();

           //document.getElementByID(<%=btnFiltrar.ClientID %>).focus();
}

But none of the two things above worked. How should I reference the button so I can focus it right after I have chosen an item? Thanks in advance.

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ClientSide API - what am I missing

8 Answers, 1 is accepted