PostBack from UserControl as custom edit form

[Adrian]

Hi!
I have my control with CheckBox <- this is my problem. I want to show panel when CheckBox is checked.
My control is used like this:

<EditFormSettings UserControlName="../UserControls/Process/StateAlert.ascx" EditFormType="WebUserControl">
     <EditColumn UniqueName="EditCommandColumn1">
     </EditColumn>
</EditFormSettings>

Inside control I have property:

public object DataItem
        {
            get
            {
                return dataItem;
            }
            set
            {
                if (value != null)
                {
                    if (value is StateJobTemplate)
                    {
                        StateJobTemplate template = (StateJobTemplate)value;
                        ShowControl(true, (StateJobTypes)template.StateJobType, template);
                        _sjtItem = template;
                    }
                    else
                    {
                        Telerik.Web.UI.GridInsertionObject newAlert = (Telerik.Web.UI.GridInsertionObject)value;
                        StateJobTemplate template = newAlert.GetPropertyValue("JobTemplate") as StateJobTemplate;
                        ShowControl(true, (StateJobTypes)template.StateJobType, template);
                        _sjtItem = template;
                    }
                    btnCancel.Visible = true;
                }
                dataItem = value;
            }
        }

Now, when I checked CheckBox, RadGrid and my control inside disappear.
If I place CheckBox inside UpdatePanel or AjaxPanel, I'll have fallowing error:

Sys.WebForms.PageRequestManagerServerErrorException: Nie mo|na wyrejestrowa elementu UpdatePanel o identyfikatorze uPanelDelay, poniewa| nie zostaB on zarejestrowany w elemencie ScriptManager. Ta sytuacja mo|e wystpi, je[li element UpdatePanel zostaB usunity z drzewa formantów, a nastpnie dodany ponownie, co nie jest obsBugiwan operacj.
Nazwa parametru: updatePanel' when calling method: [nsIDOMEventListener::handleEvent]"  nsresult: "0x8057001c (NS_ERROR_XPC_JS_THREW_JS_OBJECT)"  location: "JS frame :: chrome://firebug/content/spy.js :: onHTTPSpyReadyStateChange :: line 497"  data: no]
http://localhost:9920/ScriptResource.axd?d=1B-MRZCEFwolhXDsshMf4JjZOQs3iq1lzhqE6bwgKqGK8lEWWx8KGThf_Rfugcg6TbxwknueZdk1ek5e3cT_FYN0GGs0HIzmvczdBTv9-1E1&t=ffffffff91beb05b Line 5

It's in Polish so I'll try to explain. Error says that UpdatePanel can't be unregistered because it wasn't registered in ScriptManager.
Please, help ;)

[Georgi Krustev]

Hello Adrian,

Here is a test project which I have created in order to reproduce the described error. Please fidn the attached .zip file and examine it. Let me know if I am missing something.

Regards,
Georgi Krustev
the Telerik team

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[Adrian]

Thanks for program.

In the meantime I did this by JavaScript without PostBack but i downloaded zip for a later time ;)

[Adrian]

Hello again. 

This time i can't use JavaScript, but now i know more.

The problem is caused by my control in which RadGrid is. When RadGrid is outside everything is fine.

Same pice of code of this control:

public class ItemEditCtrl : CompositeControl, INamingContainer

{

private ITemplate _contentTemplate;

[PersistenceMode(PersistenceMode.InnerProperty)]

[TemplateInstance(TemplateInstance.Single)]

[MergableProperty(false)]

[Browsable(false)]

[TemplateContainer(typeof(ItemEditCtrl))]

public ITemplate ContentTemplate

{

get { return _contentTemplate; }

set { _contentTemplate = value; }

}

...

protected override void OnLoad(EventArgs e)

{

this.EnsureChildControls();

base.OnLoad(e);

...

}

public override ControlCollection Controls

{

get

{

this.EnsureChildControls();

return base.Controls;

}

}

protected override void OnPreRender(EventArgs e)

{

this.EnsureChildControls();

base.OnPreRender(e);

btSave.Text = TranslationEngine.GetTxt(SaveCommand);

btSave.ValidationGroup = ValidationGroup;

btSave.Visible = SaveVisible;

btClose.CausesValidation = false;

this.ValidationGroup = string.Empty;

wrapper.Style["top"] = Position.Y.ToString() + "px";

wrapper.Style["left"] = Position.X.ToString() + "px";

wrapper.Style["display"] = StringDisplayStyle;

background.Style["display"] = StringDisplayStyle;

if (this.Visible)

{

PrepareValidatorsScriptsInvoker();

...

this.DataBind();

}

}

...

protected override void OnInit(EventArgs e)

{

this.EnsureChildControls();

base.OnInit(e);

}

protected override void CreateChildControls()

{

background = new HtmlGenericControl("div");

background.Attributes["class"] = "modalBack";

background.ID = "modalBack";

Controls.Add(background);

wrapper = new Panel();

if (Width.IsEmpty || WindowWidth > 0)

{

wrapper.Attributes["style"] = string.Format("width:{0}px;", WindowWidth);

}

else

wrapper.Style["width"] = Width.ToString();

if(!Height.IsEmpty)

wrapper.Style["height"] = Height.ToString();

wrapper.Attributes["class"] = "modalWnd";

// wrapper.Attributes["style"] = string.Format("width:{0}px;", WindowWidth);

wrapper.ID = "editPopup";

Controls.Add(wrapper);

head = new HtmlGenericControl("div");

head.ID = "editPopupHead";

head.Attributes["class"] = "modalHead";

//head.Attributes["style"] = string.Format("width:{0}px;", WindowWidth);

wrapper.Controls.Add(head);

btClose = new System.Web.UI.WebControls.Button();

btClose.Text = TranslationEngine.GetTxt("Close");

btClose.OnClientClick = string.Format("$get('{0}').style.display='none';$get('{1}').style.display='none';", wrapper.ClientID, background.ClientID);

btClose.Click += new EventHandler(btClose_Click);

btClose.CausesValidation = false;

btClose.CssClass = "button_close";

head.Controls.Add(btClose);

content = new Panel();

content.ID = "content";

content.Style["overflow-y"] = "auto";

content.Height = Unit.Pixel(Math.Max(40, (int)Height.Value) - 40);

if (content.Height.Value == 0)

content.Height = Unit.Percentage(100);

wrapper.Controls.Add(content);

ContentTemplate.InstantiateIn(content);

position = new HtmlInputHidden();

position.ID = "position";

wrapper.Controls.Add(position);

btSave = new Button();

btSave.Click += new EventHandler(btSave_Click);

btSave.ValidationGroup = "selectorVG";

btSave.CssClass = "button_blue";

wrapper.Controls.Add(btSave);

wrapper.DefaultButton = btSave.ID;

this.ChildControlsCreated = true;

}

...

}

Someone can help me? What is wrong with this control?