[CLOSED] Runtime error in abstract component .cs

[feanor91]

Hello

when running my application I have this error :

"Ext.Net.Toolbar cannot use content"


on the line

return this.ContentContainer.ClientID;

in this function

         /// <summary>
        /// The id of an existing HTML node to use as the panel's body content (defaults to '').
        /// </summary>
        [ConfigOption]
        [Category("3. AbstractComponent")]
        [DeferredRender]
        [DefaultValue("")]
        [Description("The id of an existing HTML node to use as the panel's body content (defaults to '').")]
        public virtual string ContentEl
        {
            get
            {
                if (!this.DesignMode)
                {
                    if (this.PreventContent)
                    {
                        return "";
                    }

                    if (!this.ContentContainer.Visible)
                    {
                        return "";
                    }

                    if (this.Content == null && this.ContentControls.Count == 0)
                    {
                        this.ContentContainer.Visible = false;
                        return "";
                    }

                    this.ContentContainer.Visible = true;

                    var container = this as AbstractContainer;
                    if (container != null && this.ContentControls.Count > 0 && container.Items.Count == 0 && container.Layout.IsNotEmpty())
                    {
                        return "";
                    }                    
                }

                if (this is INoneContentable)
                {
                    throw new Exception(this.GetType().ToString() + " cannot use Content");
                }

                return this.ContentContainer.ClientID;
            }
        }

[Daniil]

Hi,

It means that you cannot use Toolbar Content like this:

<ext:Toolbar runat="server">
    <Content>
        <ext:DisplayField runat="server" Html="Hello World!" />
    </Content>
</ext:Toolbar>

Please use Items.

[feanor91]

OK, thanks, I will change content by items.

Could you give more explanation about that point just to understand what happened? And for other controls where I could use content in place of items, it will be the same behavior?

[Daniil]

Well, Toolbar doesn't support Content due to its destination. It should contain only Ext.Net.Components.

You can still use Content of Container, Panel, Window.

[feanor91]

Thanks a lot.

At least I have a squeleton of my application that run now. I have the desktop but no items in start menu...I have to go deeper to see what happened.