Questions on UI for ASP.NET AJAX Forum

3 answers

602 views

Hello,

I have a web page with several individual buttons and also several RadDocks that contain their own RadGrids, all of which are in an UpdatePanel. On this page, there is quite a bit of functionality that happens on the Page Load Event.

Now for the individual buttons themselves, I want the page to Postback like normal to reload the page. However, I don't want to Postback to occur when the user is working with one of the RadGrids. Currently, when the user adds, edits or deletes a record in one of the RadGrids, this causes a Postback of the page and negatively affects the performance of the overall web page.

I am using the RadAjaxManager as well:

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
<ajaxsettings>

         <telerik:AjaxSetting AjaxControlID="RadGrid1">
              <UpdatedControls>
                  <telerik:AjaxUpdatedControl ControlID="RadGrid1" LoadingPanelID="RadAjaxLoadingPanel1" />
              </UpdatedControls>
         </telerik:AjaxSetting>

</ajaxsettings>
</telerik:RadAjaxManager>

Is it possible to have the RadGrid not Postback so that the performance is not negatively affected? Any siggestions, tips or work-arounds would be greatly appreciated!

Jason

Grid

answered on 15 Feb 2010

1 answer

74 views

Bug in Radeditor

Table tool on toolbar is not working.Is there any fix for this problem?

Editor

answered on 15 Feb 2010

1 answer

95 views

Problem when dropping a custom control

Hello,

We have a custom control that shows an error in design mode when dropped on RadMultipage / Radpageview:

"Exceptions occured. Impossible to modify the collection of controls during databinding during phase load, init ..."

whereas it works out of it.

The custom control is a custom drop down list that calls a webservice.

Thanks.

TabStrip

answered on 15 Feb 2010

1 answer

130 views

missing grid lines in one column

hi,

i attach an image of the grid and post the code here:

asp:

    
            <telerik:RadGrid ID="radGridChangelog" runat="server" AllowPaging="false" AllowSorting="false" 
        
                                        AutoGenerateColumns="False" GridLines="Both" Width="100%" 
        
                                        OnNeedDataSource="RadGridChangelog_NeedDatasource" 
        
                                        OnItemDataBound="RadGridChangelog_ItemDataBound" 
        
                                        OnItemCreated="RadGridChangelog_ItemCreated"> 
        
                                        <MasterTableView DataKeyNames="id"> 
        
                                            <Columns> 
        
                                                <telerik:GridBoundColumn DataField="Id" Visible="false"> 
        
                                                </telerik:GridBoundColumn> 
        
                                                <telerik:GridTemplateColumn DataField="logtypeID" HeaderText="Logtype" UniqueName="Logtype"> 
        
                                                    <ItemTemplate> 
        
                                                        <asp:Label ID="lblLogtype" runat="server"></asp:Label> 
        
                                                    </ItemTemplate> 
        
                                                </telerik:GridTemplateColumn> 
        
                                                <telerik:GridBoundColumn DataField="logdate" HeaderText="Logdate" UniqueName="Logdate"> 
        
                                                </telerik:GridBoundColumn> 
        
                                                <telerik:GridTemplateColumn HeaderText="User" UniqueName="User"> 
        
                                                    <ItemTemplate> 
        
                                                        <asp:Label ID="lblUser" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"User.firstname").ToString() + " " + DataBinder.Eval(Container.DataItem,"User.lastname").ToString() %>'></asp:Label> 
        
                                                    </ItemTemplate> 
        
                                                </telerik:GridTemplateColumn> 
        
                                                <telerik:GridTemplateColumn DataField="message" HeaderText="Message" UniqueName="Message"> 
        
                                                    <ItemTemplate> 
        
                                                        <asp:Label ID="lblMessage" runat="server"></asp:Label> 
        
                                                    </ItemTemplate> 
        
                                                </telerik:GridTemplateColumn> 
        
                                                <telerik:GridBoundColumn DataField="oldValue" HeaderText="OldValue" UniqueName="OldValue"> 
        
                                                </telerik:GridBoundColumn> 
        
                                                <telerik:GridBoundColumn DataField="newValue" HeaderText="NewValue" UniqueName="NewValue"> 
        
                                                </telerik:GridBoundColumn> 
        
                                            </Columns> 
        
                                            <RowIndicatorColumn> 
        
                                                <HeaderStyle Width="20px"></HeaderStyle> 
        
                                            </RowIndicatorColumn> 
        
                                            <ExpandCollapseColumn> 
        
                                                <HeaderStyle Width="20px"></HeaderStyle> 
        
                                            </ExpandCollapseColumn> 
        
                                        </MasterTableView> 
        
                                    </telerik:RadGrid>

codebehind:

    
            protected void RadGridChangelog_NeedDatasource(object source, GridNeedDataSourceEventArgs e) 
        
                    { 
        
                        RadGrid radGrid = source as RadGrid; 
        
                        radGrid.DataSource = BLDocLog.GetDocLogs(CacheHelper.Instance.Document.id); 
        
                    } 
        
            protected void RadGridChangelog_ItemCreated(object sender, GridItemEventArgs e) 
        
                    { 
        
                        if (e.Item is GridHeaderItem) 
        
                        { 
        
                            GridHeaderItem headerItem = e.Item as GridHeaderItem; 
        
                            LiteralControl literal = headerItem["Logtype"].Controls[0] as LiteralControl; 
        
                            literal.Text = LanguageHelper.GetText("Logtype"); 
        
                            literal = headerItem["Logdate"].Controls[0] as LiteralControl; 
        
                            literal.Text = LanguageHelper.GetText("Logdate"); 
        
                            literal = headerItem["Message"].Controls[0] as LiteralControl; 
        
                            literal.Text = LanguageHelper.GetText("Message"); 
        
                            literal = headerItem["OldValue"].Controls[0] as LiteralControl; 
        
                            literal.Text = LanguageHelper.GetText("OldValue"); 
        
                            literal = headerItem["NewValue"].Controls[0] as LiteralControl; 
        
                            literal.Text = LanguageHelper.GetText("NewValue"); 
        
                        } 
        
                    } 
        
            protected void RadGridChangelog_ItemDataBound(object sender, GridItemEventArgs e) 
        
                    { 
        
                        if (e.Item is GridDataItem) 
        
                        { 
        
                            GridDataItem item = (GridDataItem)e.Item; 
        
                            DocLog log = item.DataItem as DocLog; 
        
                            if ((log.logtypeID == 0 || log.logtypeID == 1 ) && log.ValueNameID > -1) 
        
                            { 
        
                                System.Web.UI.WebControls.Label lblMessage = item.FindControl("lblMessage") as System.Web.UI.WebControls.Label; 
        
                                lblMessage.Text = LanguageHelper.GetText("logValueName" + log.ValueNameID.ToString()); 
        
                            } 
        
                            else 
        
                            { 
        
                                System.Web.UI.WebControls.Label lblMessage = item.FindControl("lblMessage") as System.Web.UI.WebControls.Label; 
        
                                lblMessage.Text = log.message ?? ""; 
        
                            } 
        
                            System.Web.UI.WebControls.Label lblLogtype = item.FindControl("lblLogtype") as System.Web.UI.WebControls.Label; 
        
                            lblLogtype.Text = LanguageHelper.GetText("logtype" + log.logtypeID.ToString()); 
        
                        } 
        
                    }

as you see in the attached image, the GridTemplateColumn DataField="message" is missing its gridlines in some rows. i dont know why its doing that. all other columns show their grid lines.

telereik dll version: 2009.3.1103.35
IE version: 7.0.5730.13CO

thx mario

Grid

answered on 15 Feb 2010

1 answer

138 views

Postpone client-side redrawing

We're using a RadGrid with client side databinding pointing it to a webservice and specifying a SelectMethod. This grid also has a

GridClientDeleteColumn. When a row is deleted we have a client side event handler tied to the RowDeleting event which is where we call another webservice to make the actual deletion. Everything is handled by client side code - we have nothing in our code-behind.

Occasionally, it looks like the delete doesn't work. What I believe is happening is that the grid is updating itself before the web method we call in the RowDeleting event handler has had a chance to complete. Is there a way to control when the grid updates itself on the client? What we would like to do is call the web service to delete the data in the RowDeleting event. Then, in the webservice callback method we have specified we would update the grid.

Grid

answered on 15 Feb 2010

4 answers

287 views

Client Callback to return Html + JS for new Telerik Control

I'm running clientside Callbacks for performance reasons and I would like to Add new elements to the display in the form of HTML/JS and load new Telerik Web Controls as certain selections are processed. The code below samples what I would like to do.

public void RaiseCallbackEvent(String eventArgument)
{
TextWriter text = new StringWriter();
HtmlTextWriter html = new HtmlTextWriter(text);

RadComboBox comboBox = new RadComboBox();
comboBox.ID = "test";
comboBox.RenderControl(html);
html.Flush();

callBackReturn = text.ToString();
}

public String GetCallbackResult()
    {
        return callBackReturn;
    }

The Error i Receive is on comboBox.RenderControl(html) line : Page cannot be null. Please ensure that this operation is being performed in the context of an ASP.NET request.

Can you dynamically create new Telerik controls using ClientSide Callbacks? Will this be something that will be supported in the future?

Thanks,

Matt

General Discussions

answered on 15 Feb 2010

1 answer

143 views

Global date Format

i am developing an ERP and certainly i have to use several RadGrids now i need a functionality in my application
that if a apply some format in my configuration page... then format of date in all grid should have change...
What should do :(

Grid

answered on 15 Feb 2010

1 answer

74 views

Drag and Drop between Grids on edit mode

Hello All,

I have a problem, i hope you could help me.

Here is the scenario:

Grid A : 3 columns, bound columns. read only, drag and drop enabled.
Grid B: 5 columns, bound columns on edit mode "in place".

I want to drag and drop one row from Grid A to Grid B and create the columns without information from Grid A in blank.

Is there any possibilty to do this without losing the info inserted on other rows on grid B and without recording the information on the database?

Grid

answered on 15 Feb 2010

1 answer

93 views

Grid Editing with external form demo is missing code file

In your demo http://demos.telerik.com/aspnet-ajax/ajax/examples/manager/dynamicajaxsettings/defaultcs.aspx?product=grid you dont show the code for the codebehind EmployeesGrid.ascx.cs can you post that asap. I think i need to see that to understand how this works. thanks.

Grid

answered on 15 Feb 2010

1 answer

429 views

How to reduce space between column

Hello Friends

I used new radgrid control in my page. It have more than 18 column need to display without horizontal or vertical scroll.

In old grid it is display fine but i compared new radgrid to old grid. I see there is a more space between column in new rad grid.

How i will reduce the space between column?

Please help me.

Thanks & Regards
Jignesh Patel

Grid

answered on 15 Feb 2010