[CLOSED] CheckboxSelectionModel and RowSelectionModel dynamic create

**albayrak** · Dec 23, 2010, 12:48 PM

Hi,

when i created dynamic gridpanel's selectionmodel or checkboxselectionmodel i have got this error:

Server Error in '/Rasad' Application.
--------------------------------------------------------------------------------

Can't find the property 'AutoLoadParams' in class 'Hidden'
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Can't find the property 'AutoLoadParams' in class 'Hidden'

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[InvalidOperationException: Can't find the property 'AutoLoadParams' in class 'Hidden']
Ext.Net.ViewStateProcessor.LoadViewState(Object obj, Object state) +445
Ext.Net.XControl.LoadViewState(Object state) +298
System.Web.UI.Control.LoadViewStateRecursive(Objec t savedState) +187
System.Web.UI.Control.LoadChildViewStateByIndex(Ar rayList childState) +148
System.Web.UI.Control.LoadViewStateRecursive(Objec t savedState) +225
System.Web.UI.Control.LoadChildViewStateByIndex(Ar rayList childState) +148
System.Web.UI.Control.LoadViewStateRecursive(Objec t savedState) +225
System.Web.UI.Control.LoadChildViewStateByIndex(Ar rayList childState) +148
System.Web.UI.Control.LoadViewStateRecursive(Objec t savedState) +225
System.Web.UI.Page.LoadAllState() +312
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +747

--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

where is the error?

**Vladimir** · Dec 23, 2010, 1:24 PM

Hi,

Please provide test sample. Do you recreate dynamic selection model on each request?

**albayrak** · Dec 23, 2010, 1:35 PM

hi vladimir,

i am creating dynamic gridpanel. My page is example test.aspx page. Test.aspx page has got a gridpanel.

i am adding grid attribute when page load. I am sending grid another generic class. so far not an error.

i have got error when as follows code add in generic class.

gp.SelectionModel.Add(new CheckboxSelectionModel { ID = "RowSlctnGrid" });

if i am adding selection moden in aspx page, not any error.

yes i am recreate each request.

sorry my english.:rolleyes:

**Daniil** · Dec 23, 2010, 1:53 PM

Hi,

It would be best to provide us with a full sample code. Something like the example below. I have tried to create a sample in according to the details that you provided but this works fine.

Example

<%@ Page Language="C#" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        GridPanel1.SelectionModel.Add(new CheckboxSelectionModel());
        if (!X.IsAjaxRequest)
        {
            Store store = this.GridPanel1.GetStore();
            store.DataSource = new object[] 
            { 
                new object[] { "test11", "test12", "test13" },
                new object[] { "test12", "test22", "test23" },
                new object[] { "test13", "test32", "test33" }
            };
            store.DataBind();
        }
    }
</script>

<!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>Ext.Net Example</title>
</head>
<body>
    <form runat="server">
    <ext:ResourceManager runat="server" />
    <ext:GridPanel ID="GridPanel1" runat="server" AutoHeight="true">
        <Store>
            <ext:Store runat="server">
                <Reader>
                    <ext:ArrayReader>
                        <Fields>
                            <ext:RecordField Name="test1" />
                            <ext:RecordField Name="test2" />
                            <ext:RecordField Name="test3" />
                        </Fields>
                    </ext:ArrayReader>
                </Reader>
            </ext:Store>
        </Store>
        <ColumnModel runat="server">
            <Columns>
                <ext:Column Header="Test1" DataIndex="test1" />
                <ext:Column Header="Test2" DataIndex="test2" />
                <ext:Column Header="Test3" DataIndex="test3" />
            </Columns>
        </ColumnModel>
    </ext:GridPanel>
    </form>
</body>
</html>

**albayrak** · Dec 23, 2010, 2:40 PM

aspx

<ext:GridPanel ID="grid" runat="server">
            <Store>
                <ext:Store OnRefreshData="storeRefreshData" OnBeforeStoreChanged="SaveHandler" 
                        OnSubmitData="storeSubmitData" ID="storeRasadGrid"  runat="server"> 
                </ext:Store>
            </Store>
            <Items>
                <ext:Hidden ID="hdJson" runat="server">
                </ext:Hidden>
            </Items>
</ext:GridPanel>

code behind aspx.cs


protected void Page_Load(object sender, EventArgs e)
    {
        if (!X.IsAjaxRequest)
        {
            createGrid();
        } 
    }

private void createGrid()
    {
        getConfig(grid, Session);
    }

private static void getConfig(GridPanel grid,sessionCls session)
    {
        new GenericGrid(grid, "RasadLogConf",session);
    }

genericGrid cs.


public GenericGrid(GridPanel gp,string procName,System.Web.SessionState.HttpSessionState session)
    {
        string lang = "tr-TR";     
        procGetGridConfigResult conf = DatabaseUtils.retrieveGridConfig(procName, lang);

        List<procGetGridColumnConfigResult> listClmnConf = DatabaseUtils.retrieveGridColumnConfig(conf.ID, lang);

        setGridConfig(gp,conf);
        setColumnConfig(gp,listClmnConf);
    }


private void setGridConfig(GridPanel gp,procGetGridConfigResult gridConf)
    {
        int start=0;
        int limit=10;
        string idProperty = string.Empty;

        if (gridConf.HEIGHT != null)
        { gp.Height = (int)gridConf.HEIGHT; }
        else{gp.AutoHeight=true;}

        if(gridConf.WIDTH!=null)
        { gp.Width = (int)gridConf.WIDTH; }
        else{gp.AutoWidth=true;}
        
        if(gridConf.GRID_TITLE!=null)
        { gp.Title = gridConf.GRID_TITLE; }
        
        if (gridConf.START != null)
        { start = (int)gridConf.START; }

        if (gridConf.LIMIT != null)
        { limit = (int)gridConf.LIMIT; }

        if (gridConf.READER_ID_PROPERTY != null)
        { idProperty = gridConf.READER_ID_PROPERTY; }

        gp.TopBar.Add(new Toolbar {ID="idTlbr" });

        if (gridConf.ADD_BUTTON!=null && (bool)gridConf.ADD_BUTTON)
        {
            gp.TopBar[0].Add(new Button{ID="btnAdd" ,Text="Ekle",Listeners={Click={Handler="#{grid}.insertRecord(0, {Id : '1'}); #{grid}.startEditing(0, 0);" }},
                Icon=Icon.Add });
        }
        if (gridConf.DELETE_BUTTON != null && (bool)gridConf.DELETE_BUTTON)
        {
            gp.TopBar[0].Add(new Button { ID = "btnDelete", Text = "Sil", Icon = Icon.Delete,
            Listeners={ Click={Handler="#{grid}.deleteSelected(); "}}});
        }
        if (gp.TopBar[0].Items.Count > 0)
        {

            gp.TopBar[0].Add(new ToolbarFill());
            gp.TopBar[0].Add(new Button { ID = "btnSbmt", Text = "Kaydet", Listeners = { Click = { Handler = "#{grid}.save();" } } });
        }

        IEnumerable<Parameter> paramList = new List<Parameter> { new Parameter { Name = "start", Value = "={"+start+"}" },
                new Parameter { Name = "limit",Value = "={"+limit+"}" } };

        gp.Store[0].AutoLoadParams.AddRange(paramList);
        gp.Store[0].WriteBaseParams.Add(new Ext.Net.Parameter { Name = "paramSelectStoreName", Value = gridConf.SELECT_SP_NAME, Mode = ParameterMode.Value });
        gp.Store[0].WriteBaseParams.Add(new Ext.Net.Parameter { Name = "paramConfigName", Value = gridConf.CONFIGURATION_NAME, Mode = ParameterMode.Value });
        gp.Store[0].Reader.Add(new JsonReader { IDProperty = idProperty /* Root = "Data", TotalProperty = "TotalRecords" Generic Handlerda kullanılmalı */});
        gp.Store[0].Proxy.Add(new PageProxy());        

        gp.BottomBar.Add(new PagingToolbar { PageSize = 10 });
       gp.SelectionModel.Add(new CheckboxSelectionModel {ID="test" });

    }

**Daniil** · Dec 23, 2010, 2:47 PM

Originally Posted by albayrak

yes i am recreate each request.

Hi,

In according to the code below CheckBoxSelectionModel is not recreated during each request.

protected void Page_Load(object sender, EventArgs e)
{
    if (!X.IsAjaxRequest)
    {
        createGrid();
    }
}

Because X.IsAjaxRequest is true during DirectEvent.

So, please try

protected void Page_Load(object sender, EventArgs e)
{
    createGrid();
}

**albayrak** · Dec 23, 2010, 2:54 PM

same error.

my aspx.cs

another methods as follow

    protected void storeRefreshData(object sender, StoreRefreshDataEventArgs e)
    {
        //if (grid.Store[0].Reader.Count==0)
        //{
            getConfig(grid,Session);
        //}
        int start=int.Parse( e.Parameters[0].Value.ToString());
        int limit = int.Parse(e.Parameters[1].Value.ToString());

        int? count = 0;
        grid.Store[0].DataSource = DatabaseUtils.retrieveLog(grid.Store[0].WriteBaseParams["paramSelectStoreName"], start, start + limit, ref count);
        this.grid.Store[0].DataBind();

        (grid.Store[0].Proxy[0] as PageProxy).Total =(int) count;
    }

    private static void getConfig(GridPanel grid,sessionCls session)
    {
        new GenericGrid(grid, "RasadLogConf",session);
    }   

    protected void SaveHandler(object sender, BeforeStoreChangedEventArgs e)
    {
        getConfig(grid,Session);
        hdJson.Text = e.DataHandler.JsonData;
        ResourceManager.GetInstance(this.Context).AddScript("grid.getStore().submitData();");
    }

**Daniil** · Dec 23, 2010, 3:37 PM

Originally Posted by albayrak

aspx

<ext:GridPanel ID="grid" runat="server">
            <Store>
                <ext:Store OnRefreshData="storeRefreshData" OnBeforeStoreChanged="SaveHandler" 
                        OnSubmitData="storeSubmitData" ID="storeRasadGrid"  runat="server"> 
                </ext:Store>
            </Store>
            <Items>
                <ext:Hidden ID="hdJson" runat="server">
                </ext:Hidden>
            </Items>
</ext:GridPanel>

I just noticed that you use <Items> of GridPanel. Please note that GridPanel doesn't support Items collection. Please define <ext:Hidden> in some place that out of GridPanel. You could place this control on the same level as <ext:ResourceManager>.

same error.

Please try to create a grid in page_Init.

protected void Page_Init(object sender, EventArgs e)
{
    createGrid();
}

**albayrak** · Dec 24, 2010, 5:54 AM

ext:hidden object is work in gridpanel when i didn't create dynamic selection model:confused:

code works as follow

protected void Page_Init(object sender, EventArgs e) 
{ 
   createGrid(); 
} 


 protected void storeRefreshData(object sender, StoreRefreshDataEventArgs e)
    {
        if (grid.Store[0].Reader.Count==0) // this control necessarry or  application got error
        {
            getConfig(grid,Session);
        }
        int start=int.Parse( e.Parameters[0].Value.ToString());
        int limit = int.Parse(e.Parameters[1].Value.ToString());

        int? count = 0;
        grid.Store[0].DataSource = DatabaseUtils.retrieveLog(grid.Store[0].WriteBaseParams["paramSelectStoreName"], start, start + limit, ref count);
        this.grid.Store[0].DataBind();

        (grid.Store[0].Proxy[0] as PageProxy).Total =(int) count;
    }

what is the difference pageInit and pageLoad?

thanks for all answer.

**Daniil** · Dec 24, 2010, 6:25 AM

Originally Posted by albayrak

ext:hidden object is work in gridpanel when i didn't create dynamic selection model:confused:

Yes, it can work in some cases but we don't recommend to use GridPanel's <Items> collection. It's not supported and can be broken in the future releases.

Originally Posted by albayrak

code works as follow

protected void Page_Init(object sender, EventArgs e) 
{ 
   createGrid(); 
} 


 protected void storeRefreshData(object sender, StoreRefreshDataEventArgs e)
    {
        if (grid.Store[0].Reader.Count==0) // this control necessarry or  application got error
        {
            getConfig(grid,Session);
        }
        int start=int.Parse( e.Parameters[0].Value.ToString());
        int limit = int.Parse(e.Parameters[1].Value.ToString());

        int? count = 0;
        grid.Store[0].DataSource =  DatabaseUtils.retrieveLog(grid.Store[0].WriteBaseParams["paramSelectStoreName"],  start, start + limit, ref count);
        this.grid.Store[0].DataBind();

        (grid.Store[0].Proxy[0] as PageProxy).Total =(int) count;
    }

what is the difference pageInit and pageLoad?

Well, the difference is the order of firing these events in according to page life cycle. As you can know Page_Init is executed before Page_Load. So, some things must be done in Page_Init. I assume it's the following thing in your case:

gp.Store[0].AutoLoadParams.AddRange(paramList);

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