Questions on UI for ASP.NET AJAX Forum

1 answer

65 views

RadGrid issues

I am not sure why its complicated or maybe im misunderstanding.

I have a custom datasource.
I programmatically add columns and then on ItemDataBound, I get the currentItem and bind the values from the custom object (currentItem) to the columns in the current row being bound. Great.

But now, I want to retrieve the values (potentially modified values) on an "Update" Command.
So I have an OnItemCommand and it does fire.
However, when trying to retrieve the value, I only get an empty HTML space even though the value is there.

Any ideas where I am going wrong?

protected void radGridMenus_OnItemCommand(object sender, GridCommandEventArgs e)

{

GridDataItem currentRow = e.Item as GridDataItem;

if (currentRow != null)

{

switch (e.CommandName.ToLower().Trim())

{

case "update":

// currentRow["MenuID"].Value - here it is Not sure why?

break;

default:

break;

}

Full code:

protected void Page_Init(object sender, EventArgs e)

{

this.DoSetDefaultMenuColumns();

}

private void DoSetDefaultMenuColumns()

{

// lets create the columns.

GridBoundColumn menuIDColumn = new GridBoundColumn();

menuIDColumn.HeaderText = "Menu ID";

menuIDColumn.DataField = "MenuID";

GridBoundColumn menuNameColumn = new GridBoundColumn();

menuNameColumn.HeaderText = "Menu Name";

menuNameColumn.DataField = "MenuName";

GridDropDownColumn menuOrderColumn = new GridDropDownColumn();

menuOrderColumn.HeaderText = "Menu Order ID";

menuOrderColumn.DataField = "MenuOrderID";

GridDropDownColumn parentIDColumn = new GridDropDownColumn();

parentIDColumn.HeaderText = "Parent ID";

parentIDColumn.DataField = "ParentID";

GridCheckBoxColumn isAdminColumn = new GridCheckBoxColumn();

isAdminColumn.HeaderText = "Is Admin";

isAdminColumn.DataField = "IsAdmin";

GridBoundColumn pageURLColumn = new GridBoundColumn();

pageURLColumn.HeaderText = "Page URL";

pageURLColumn.DataField = "PageURL";

GridCheckBoxColumn employeeAccessColumn = new GridCheckBoxColumn();

employeeAccessColumn.HeaderText = "Employee Access";

employeeAccessColumn.DataField = "EmployeeAccess";

GridCheckBoxColumn customerAccessColumn = new GridCheckBoxColumn();

customerAccessColumn.HeaderText = "Customer Access";

customerAccessColumn.DataField = "CustomerAccess";

GridButtonColumn updateColumn = new GridButtonColumn();

updateColumn.ButtonType = GridButtonColumnType.LinkButton;

updateColumn.HeaderText = "Update";

updateColumn.Text = "Update Menu Item";

updateColumn.UniqueName = "UpdateMenuItem";

updateColumn.CommandName = "Update";

updateColumn.ItemStyle.ForeColor = Color.Blue;

this.radGridMenus.MasterTableView.Columns.Add(menuIDColumn);

this.radGridMenus.MasterTableView.Columns.Add(menuNameColumn);

this.radGridMenus.MasterTableView.Columns.Add(menuOrderColumn);

this.radGridMenus.MasterTableView.Columns.Add(parentIDColumn);

this.radGridMenus.MasterTableView.Columns.Add(pageURLColumn);

this.radGridMenus.MasterTableView.Columns.Add(isAdminColumn);

this.radGridMenus.MasterTableView.Columns.Add(employeeAccessColumn);

this.radGridMenus.MasterTableView.Columns.Add(customerAccessColumn);

this.radGridMenus.MasterTableView.Columns.Add(updateColumn);

}

protected void radGridMenus_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)

{

if (!e.IsFromDetailTable)

{

this.radGridMenus.DataSource = this.CurrentMenuItemsView; // List<T>

}

protected void radGridMenus_OnItemCommand(object sender, GridCommandEventArgs e)

{

GridDataItem currentRow = e.Item as GridDataItem;

if (currentRow != null)

{

switch (e.CommandName.ToLower().Trim())

{

case "update":

break;

default:

break;

}

protected void radGridMenus_OnItemDataBound(object sender, GridItemEventArgs e)

{

if (e.Item is GridDataItem)

{

GridDataItem currentItem = e.Item as GridDataItem;

var currentMenu = currentItem.DataItem as MProSoftwareMenus;

if (currentMenu != null)

{

if (currentMenu.ParentID.HasValue)

{

currentItem["ParentID"].Text = currentMenu.ParentID.Value.ToString();

}

if (currentMenu.MenuOrderID.HasValue)

{

currentItem["MenuOrderID"].Text = currentMenu.MenuOrderID.Value.ToString();

}

((CheckBox)currentItem["IsAdmin"].Controls[0]).Checked = currentMenu.IsAdmin.GetValueOrDefault(false);

((LinkButton)currentItem["UpdateMenuItem"].Controls[0]).CommandArgument = currentMenu.MenuID.ToString();

}

General Discussions

answered on 03 Feb 2013

1 answer

101 views

Remove Expand/Collapse

Hello,
I wanna remove expand/collapse property when no child items in hierarchical grid.I wanna remove particular cell expand/collapse only

General Discussions

answered on 03 Feb 2013

1 answer

185 views

How to create customize rows in RadGrid?

Hello,
I am brand new to RadGrid.
I working on a grid that have only 3 columns.

Firstly, data are retrieved from database into a DataTable, like this:

 static DataTable GetData()
    {
        DataTable table = new DataTable();
        table.Columns.Add("Name", typeof(string));
        table.Columns.Add("Activate", typeof(string));
        table.Columns.Add("Actions", typeof(string));        
 
        table.Rows.Add("Toilets", "Activate", "Duplicate Delete");
        table.Rows.Add("Swimming pools", "Activate", "Duplicate Delete");
        table.Rows.Add("Pumps", "Deactivate", "Duplicate Delete");
        table.Rows.Add("Taps", "", "Duplicate Delete");
        table.Rows.Add("Boiler", "Activate", "Duplicate Delete");
        return table;
    }"

then bind to radgrid using: .DataScource = dataTable;

I want to archive the followings:
1. Active column: i wanna use Image button to render "Activate", "Deactivate" command. When user click those buttons, how can i know from which rows, the buttons were clicked. If the data cell is empty, then do not show any button.
2. I wanna replace Duplicate and Delete with two image buttons inside the same cell.

It seems that i should use ItemTemplate or something like that but after reading documents from telerik, i still can not find out the solution. I am really appreciate your help. Thanks in advanced.

Grid

answered on 02 Feb 2013

1 answer

94 views

CommandItemDisplay Label

Is it possible to add a label/text to the command bar that appears when you have commanditemdisplay="top" in the mastertableview set. See my graphic for a better explanation

Grid

answered on 02 Feb 2013

7 answers

155 views

Selection out of range on formview

Hi,

I am getting a selection out of range when binding to a datasource in a formview. This happens on occasion if the previously saved ID for say a company on the formview no longer exists in the company datasource.

That is fine and I expect an exception to be raised as the company ID does indeed not exist in the datasource.

I need to be able to intercept that exception with a try / catch and then manually change the empty item text to something like "Invalid company value". The user can then select a different company.

Because the binding is handled by the formview I'm not sure where to have the try/catch...

Any suggestions?

Regards,

Jon

ComboBox

answered on 01 Feb 2013

4 answers

275 views

[Solved] How to force user to click insert/edit button or cancel button ?

I use EditMode="EditForms" for user to insert/edit item of the RedGrid. Once in the Edit/Insert form, how to force the user to either click edit/insert button or Cancel button before leaving the Edit/Insert form ? Or at least providing a warning of losing data ?

Thanks a lot in advance !

Grid

answered on 01 Feb 2013

3 answers

278 views

Set text from the client side.

Is thre a way to set the search box text from the client side?

SearchBox

answered on 01 Feb 2013

1 answer

88 views

GridPaging links set to disabled even though paging is on.

I have a problem where all the links for the pages are set to "disabled" even though they have been enabled in the control and are showing up.

Here is my declaring code:

<asp:Panel ID="panelTab1" runat="server">

<div>

<telerik:RadGrid ID="DataFeedGrid" runat="server" AllowSorting="true" AllowPaging="true"

AllowCustomPaging="true" OnSortCommand="Grid_Sorting" OnPageIndexChanged="Grid_Paging"

Skin="Vista" meta:resourcekey="DataGrid">

<MasterTableView AutoGenerateColumns="False" EnableNoRecordsTemplate="true" ShowHeadersWhenNoRecords="false"

NoMasterRecordsText="No records match the search criteria.">

<Columns>

<telerik:GridBoundColumn

ItemStyle-Width="125px" meta:resourcekey="GridBoundColumn1" />

<telerik:GridBoundColumn

ItemStyle-Width="100px" meta:resourcekey="GridBoundColumn2" />

<telerik:GridTemplateColumn >

<HeaderTemplate>

<asp:CheckBox ID="cbHdrFlightExplorer" runat="server" />

</HeaderTemplate>

<ItemTemplate>

<asp:CheckBox ID="cbFlightExplorer" runat="server" />

</ItemTemplate>

</telerik:GridTemplateColumn>

</Columns>

</MasterTableView>

<AlternatingItemStyle BackColor="#E9E9E9" />

<PagerStyle Mode="NumericPages" />

<ClientSettings>

<ClientEvents OnGridCreated="OnClientGridCreated" />

</ClientSettings>

</telerik:RadGrid>

</div>

Here is the code in question it generates in relation to paging:

<td class="rgPagerCell NumericPages"><div class="rgWrap rgNumPart">

<a onclick="return false;" disabled="disabled" class="rgCurrentPage"><span>1</span></a><a disabled="disabled"><span>2</span></a><a disabled="disabled"><span>3</span></a><a disabled="disabled"><span>4</span></a>

</div><div class="rgWrap rgInfoPart">

Displaying page 1 of 4, items 1 to 2 of 8.

</div></td>

I can not find any code client side or server side that causes this behavior.

Can anyone help?

Grid

answered on 01 Feb 2013

5 answers

382 views

Unable to bind to greater than 3000 rows in Self Referencing Hierarchy

Hello,
I've been using the self referencing capability of the RadGrid for some time now. Today I was loading data in to the DB that the grid is pulling from and the grid starting throwing out of memory exceptions.

This grid is fully functional, and I had been using test data sets of up to several hundred rows. When I loaded the real data set of just over 6500 rows the grid started throwing the error. I was able to get it work up to 3400 rows, after that the error is thrown. Page processing takes a couple of minutes when it's trying to load the data, during which you can see it taking up memory little by little until .NET tells it to take a hike. The system has 8GB of memory installed, and a test server has 4GB. Fails on both.

This is clearly a bug to me. This is basic text, each row contains a couple of GUIDs and a single text sentence, and it can't handle a few thousand rows? DataTables, GridViews, et all, work without issue.

There is no paging enabled on this grid nor can there be, as it is a grid of a hierarchy that needs to keep expanding.

Please let me know if there is something wrong with my setup, or if there is a known fix. My markup is below, as well as the error message.

                    <telerik:RadGrid runat="server" ID="TaxonomiesRadGrid" AllowMultiRowSelection="true" Visible="false"          
                OnNeedDataSource="TaxonomiesRadGrid_NeedDataSource" Skin="WebBlue" AutoGenerateColumns="false"          
                Width="100%" GridLines="None" MasterTableView-GridLines="None" ClientSettings-AllowGroupExpandCollapse="true"          
                OnItemCreated="TaxonomiesRadGrid_ItemCreated" ShowStatusBar="true" OnInsertCommand="TaxonomiesRadGrid_InsertCommand"          
                OnUpdateCommand="TaxonomiesRadGrid_UpdateCommand" OnDeleteCommand="TaxonomiesRadGrid_DeleteCommand">          
                <MasterTableView HierarchyDefaultExpanded="false" HierarchyLoadMode="Client" CommandItemDisplay="Top"          
                    CommandItemSettings-AddNewRecordText="Add a new Taxonomy Parent" EditMode="InPlace"          
                    NoMasterRecordsText="No taxonomy items to display. Please add an item using the link above."          
                    DataKeyNames="taxonomyItemId, taxonomyParentId">          
                    <SelfHierarchySettings ParentKeyName="taxonomyParentId" KeyName="taxonomyItemId"          
                        MaximumDepth="100" />          
                    <Columns>          
                        <telerik:GridBoundColumn DataField="taxonomyText" DataType="System.String" HeaderText="Taxonomy Description"          
                            SortExpression="taxonomyText" UniqueName="taxonomyText">          
                        </telerik:GridBoundColumn>          
                        <telerik:GridEditCommandColumn ButtonType="PushButton" ItemStyle-Width="120px" ItemStyle-HorizontalAlign="Right">          
                        </telerik:GridEditCommandColumn>          
                        <telerik:GridClientDeleteColumn ButtonType="PushButton" ItemStyle-Width="50px" ItemStyle-BorderWidth="0px"          
                            ItemStyle-HorizontalAlign="Center" ConfirmText="Are you sure you want to delete this taxonomy item and any items beneath it?">          
                        </telerik:GridClientDeleteColumn>          
                    </Columns>          
                </MasterTableView>          
                <ClientSettings AllowExpandCollapse="true" AllowGroupExpandCollapse="true">          
                </ClientSettings>          
            </telerik:RadGrid>          

                    Server Error in '/NTTR' Application.          
                      
            Exception of type 'System.OutOfMemoryException' was thrown.          
                      
            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.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.          
                      
            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:           
                      
                      
            [OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.]          
               System.String.GetStringForStringBuilder(String value, Int32 startIndex, Int32 length, Int32 capacity) +29          
               System.Text.StringBuilder.GetNewString(String currentString, Int32 requiredLength) +69          
               System.Text.StringBuilder.Append(String value) +97          
               System.Web.UI.ScriptControlManager.RegisterScriptsForScriptDescriptors(IEnumerable`1 scriptDescriptors, Control control) +240          
               System.Web.UI.ScriptControlManager.RegisterScriptDescriptors(IScriptControl scriptControl) +113          
               System.Web.UI.ScriptManager.RegisterScriptDescriptors(IScriptControl scriptControl) +21          
               Telerik.Web.UI.RadCompositeDataBoundControl.RegisterScriptDescriptors() +37          
               Telerik.Web.UI.RadCompositeDataBoundControl.RenderContents(HtmlTextWriter writer) +38          
               Telerik.Web.UI.RadGrid.RenderContents(HtmlTextWriter writer) +56          
               Telerik.Web.UI.GridBaseDataList.Render(HtmlTextWriter writer) +88          
               Telerik.Web.UI.RadGrid.Render(HtmlTextWriter writer) +125          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               Telerik.Web.UI.ControlRenderer.Render(HtmlTextWriter writer) +84          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134          
               System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19          
               System.Web.UI.Control.Render(HtmlTextWriter writer) +10          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134          
               System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19          
               System.Web.UI.UpdatePanel.RenderChildren(HtmlTextWriter writer) +234          
               System.Web.UI.Control.Render(HtmlTextWriter writer) +10          
               System.Web.UI.UpdatePanel.Render(HtmlTextWriter writer) +34          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               Telerik.Web.UI.PreControlToAjaxify.Render(HtmlTextWriter writer) +112          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134          
               System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19          
               System.Web.UI.Control.Render(HtmlTextWriter writer) +10          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134          
               System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19          
               System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +163          
               System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +32          
               System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +51          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +40          
               System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134          
               System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19          
               System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +32          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134          
               System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19          
               System.Web.UI.Control.Render(HtmlTextWriter writer) +10          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134          
               System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19          
               System.Web.UI.Page.Render(HtmlTextWriter writer) +29          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               Telerik.Web.UI.RadAjaxControl.RenderPageInAjaxMode(HtmlTextWriter writer, Control page) +594          
               System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +256          
               System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19          
               System.Web.UI.Page.Render(HtmlTextWriter writer) +29          
               System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99          
               System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25          
               System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1266          
                      
            Version Information: Microsoft .NET Framework Version:2.0.50727.4200; ASP.NET Version:2.0.50727.4016          

Grid

answered on 01 Feb 2013

1 answer

142 views

radgrid hierarchy AllowColumnResize="true"

I have a 3 layer multi grid, on the firest layer of the grid, I have a dropdown tempaltes, click one of the item on the dropdown, will open a radwindow. The grid set

HierarchyLoadMode="Client"

I set the each layer of the grid view with with Width="98%"
when I use AllowColumnResize="true" and UseStaticHeaders="true", and when all the grid level are expand, everytime when I below code to open pop up radwindow, the grid colum won't fit the winow well, instead it bumps to the left side for the second and third level of the grid. see attachment. It looks like AllowColumnResize=

"true"  and UseStaticHeaders="true" won't work for hierarchy grid. also, if try to resize (expand)the seocnd or third level of the grid, the grid will go out of the window width.

StringBuilder sbShowwndProcHist = new StringBuilder();

sbShowwndProcHist.Append(

"radopen(null, 'wndProcHist');");

ScriptManager.RegisterStartupScript(this, GetType(), "ViewwndProcHistKey", sbShowwndProcHist.ToString(), true);

<ClientSettings EnableRowHoverStyle="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder"

ReorderColumnsOnClient="true">