Questions on UI for ASP.NET AJAX Forum

1 answer

128 views

I am building a treeview with a grid like template (it may also become a listview rather than a grid). When I load the non-templated nodes via .aspx it works fine, when I try do build the tree dynamically on server side it fails with the following error:

The DataSourceID of 'ctl00' must be the ID of a control of type IDataSource. A control with ID 'Level 0' could not be found

I am not sure what I am doing wrong, any assistance would be appreciated.

I have attached a picture of what the correct display.

Working code:

    
            <%@ Page Language="C#" %> 
        
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
        
            <script runat="server"> 
        
                protected override void OnInit(EventArgs e) 
        
                { 
        
                    RadTreeView1.NodeTemplate = new RadGridTemplate(); 
        
                    base.OnInit(e); 
        
                } 
        
                protected void Page_Load(object sender, EventArgs e) 
        
                { 
        
                    if (!Page.IsPostBack) 
        
                    { 
        
                        foreach (RadTreeNode node1 in RadTreeView1.GetAllNodes()) 
        
                        { 
        
                            if (node1.Level == 1) 
        
                                node1.Nodes.Add(new RadTreeNode("SqlDataSource1")); 
        
                        } 
        
                    } 
        
                    RadTreeView1.DataBind(); 
        
                } 
        
                class RadGridTemplate : ITemplate 
        
                { 
        
                    public void InstantiateIn(Control container) 
        
                    { 
        
                        RadGrid RadGrid1 = new RadGrid(); 
        
                        RadGrid1.DataBinding += new EventHandler(RadGrid_DataBinding); 
        
                        container.Controls.Add(RadGrid1); 
        
                    } 
        
                    private void RadGrid_DataBinding(object sender, EventArgs e) 
        
                    { 
        
                        RadGrid target = (RadGrid)sender; 
        
                        RadTreeNode node = (RadTreeNode)target.BindingContainer; 
        
                        string source = (string)DataBinder.Eval(node, "Text"); 
        
                        target.DataSourceID = source; 
        
                    } 
        
                } 
        
            </script> 
        
            <html xmlns="http://www.w3.org/1999/xhtml"> 
        
            <head runat="server"> 
        
                <title>Untitled Page</title> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                    <telerik:RadScriptManager ID="RadScriptManager1" runat="server" /> 
        
                    <telerik:RadTreeView ID="RadTreeView1" Runat="server"> 
        
                    <Nodes>  
        
                          <telerik:RadTreeNode Text="Level 0"> 
        
                            <Nodes> 
        
                                <telerik:RadTreeNode Text="Level 1a" /> 
        
                                <telerik:RadTreeNode Text="Level 1b" /> 
        
                                <telerik:RadTreeNode Text="Level 1c" /> 
        
                                <telerik:RadTreeNode Text="Level 1d" /> 
        
                                <telerik:RadTreeNode Text="Level 1e" /> 
        
                                <telerik:RadTreeNode Text="Level 1f" /> 
        
                            </Nodes> 
        
                          </telerik:RadTreeNode>  
        
                    </Nodes> 
        
                    </telerik:RadTreeView>  
        
                </form> 
        
                <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:GolfLeague %>" 
        
                    SelectCommand="select * from scores where memberid = 1" 
        
                    SelectCommandType="Text"> 
        
                </asp:SqlDataSource> 
        
            </body> 
        
            </html>

Not Working Code:

    
            <%@ Page Language="C#" %> 
        
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
        
            <script runat="server"> 
        
                protected override void OnInit(EventArgs e) 
        
                { 
        
                    RadTreeView1.NodeTemplate = new RadGridTemplate(); 
        
                    base.OnInit(e); 
        
                } 
        
                protected void Page_Load(object sender, EventArgs e) 
        
                { 
        
                    if (!Page.IsPostBack) 
        
                    { 
        
                        LoadTree(); 
        
                        foreach (RadTreeNode node1 in RadTreeView1.GetAllNodes()) 
        
                        { 
        
                            if (node1.Level == 1) 
        
                                node1.Nodes.Add(new RadTreeNode("SqlDataSource1")); 
        
                        } 
        
                    } 
        
                    RadTreeView1.DataBind(); 
        
                } 
        
                protected void LoadTree() 
        
                { 
        
                    // 
        
                    // ORIGINAL HIERACHICAL LOADING OF TREEVIEW 
        
                    // 
        
                    // get the hierachical data from the DAL 
        
                    //DataTable dt = DAL.Routines.getFlightPlayerTree(); 
        
                    //treeView.DataTextField = "Name"; 
        
                    //treeView.DataFieldID = "ID"; 
        
                    //treeView.DataValueField = "ID"; 
        
                    //treeView.DataFieldParentID = "ParentID"; 
        
                    //treeView.DataSource = dt; 
        
                    RadTreeView1.Nodes.Clear(); 
        
                    RadTreeNode node = new RadTreeNode("Level 0"); 
        
                    node.Nodes.Add(new RadTreeNode("Level 1a")); 
        
                    node.Nodes.Add(new RadTreeNode("Level 1b")); 
        
                    node.Nodes.Add(new RadTreeNode("Level 1c")); 
        
                    node.Nodes.Add(new RadTreeNode("Level 1d")); 
        
                    node.Nodes.Add(new RadTreeNode("Level 1e")); 
        
                    node.Nodes.Add(new RadTreeNode("Level 1f")); 
        
                    RadTreeView1.Nodes.Add(node); 
        
                } 
        
                class RadGridTemplate : ITemplate 
        
                { 
        
                    public void InstantiateIn(Control container) 
        
                    { 
        
                        RadGrid RadGrid1 = new RadGrid(); 
        
                        RadGrid1.DataBinding += new EventHandler(RadGrid_DataBinding); 
        
                        container.Controls.Add(RadGrid1); 
        
                    } 
        
                    private void RadGrid_DataBinding(object sender, EventArgs e) 
        
                    { 
        
                        RadGrid target = (RadGrid)sender; 
        
                        RadTreeNode node = (RadTreeNode)target.BindingContainer; 
        
                        string source = (string)DataBinder.Eval(node, "Text"); 
        
                        target.DataSourceID = source; 
        
                    } 
        
                } 
        
            </script> 
        
            <html xmlns="http://www.w3.org/1999/xhtml"> 
        
            <head runat="server"> 
        
                <title>Untitled Page</title> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                    <telerik:RadScriptManager ID="RadScriptManager1" runat="server" /> 
        
                    <telerik:RadTreeView ID="RadTreeView1" Runat="server"> 
        
                    </telerik:RadTreeView>  
        
                </form> 
        
                <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:GolfLeague %>" 
        
                    SelectCommand="select * from scores where memberid = 1" 
        
                    SelectCommandType="Text"> 
        
                </asp:SqlDataSource> 
        
            </body> 
        
            </html>

TreeView

answered on 03 May 2010

5 answers

225 views

DataFormatString in Group By Expression

Is there a way to include the DataFormatString inside a group by expression?

GroupByExpression

="StartTimeGB Arrived Group By StartTimeGB"

There are examples of how to declare one using markup, but all of them cause the grid to come up grouped by default, which I don't want. How can I do this without the default grouping?

Thanks,
Levi

Grid

answered on 03 May 2010

1 answer

132 views

Client Keyboard Shortcut TimePicker

I'm using the TimePicker, and was wondering if there is a way to simply type "n" for "now" (current datetime)?
Are there any shortcuts for the control?
I want the input empty until they enter a time. I do not want it to default to today or anything.
Thanks in advance for the suggestions.
~bg

Calendar

answered on 03 May 2010

3 answers

139 views

Result count not displayed ( after installing new telric/rad wsp) - Rad Grid

Hi

In my rad grid I have used the code:-

<PagerTemplate>
            <asp:Panel ID="PagerPanel" Style="padding: 6px; line-height: 24px" runat="server">
                <div style="margin: 0px; float: left;">
                    <%# (int)DataBinder.Eval(Container, "Paging.FirstIndexInPage") + 1%>
                    -
                    <%# (int)DataBinder.Eval(Container, "Paging.LastIndexInPage") + 1%>
                    (of
                    <%# DataBinder.Eval(Container, "Paging.DataSourceCount")%>
                    )
                </div>
                <div class="rgPagingCont">
                    <div class="rgPagingPanel">
                        <asp:Button ID="btnFirst" runat="server" OnClientClick="changePage('first'); return false;"
                            CommandName="Page" CommandArgument="First" Text="" CssClass="rgPageFirst" />
                        <asp:Button ID="btnPrev" runat="server" OnClientClick="changePage('prev'); return false;"
                            CommandName="Page" CommandArgument="Prev" Text="" CssClass="rgPagePrev" />
                        <div style="position: absolute; top: 0; left: 50px">
                            <asp:Panel runat="server" ID="NumericPagerPlaceHolderDepartment">
                            </asp:Panel>
                            <asp:Button ID="btnNext" runat="server" OnClientClick="changePage('next'); return false;"
                                CommandName="Page" CommandArgument="Next" Text="" CssClass="rgPageNext" />
                            <asp:Button ID="btnLast" runat="server" OnClientClick="changePage('last'); return false;"
                                CommandName="Page" CommandArgument="Last" Text="" CssClass="rgPageLast" />
                        </div>
                    </div>
                </div>
                <div style="float: right">
                    <span style="margin-right: 3px;">Results per page:</span>
                    <telerik:RadComboBox ID="rcPgSize" DataSource="<%# new object[]{25, 50, 75, 100} %>"
                        Width="65px" SelectedValue='<%# DataBinder.Eval(Container, "Paging.PageSize") %>'
                        runat="server" OnClientSelectedIndexChanged="rcPgSize_SelectedIndexChanged">
                    </telerik:RadComboBox>
                </div>
            </asp:Panel>
        </PagerTemplate>

Earlier , even if the result count was lesser then 1 page size , the code kept in bold used to show the no. of results like 1 - 25 (of 52 )

But after installing new rad wsp, if the result count is less than 1 page, the strip containing result count, pagination and results per page drop down is not rendered.
If the result count is more than 1 page size , only then this strip is rendered now.

Is it a enhancement in latest rad/telrick wsp, or its a bug which can be solved some way. I have not made any code change.

Please help.

Grid

answered on 03 May 2010

5 answers

151 views

multiple grouping level

I need to develop a booking room system,
I have a room that can be fully booked, or can be split to parts A & B which each can be booked independently or together
I would like to show two grouping level to the user,

Example:

[ ROOM A ][ ROOM B ]
[ A1 ][ A2 ][ B1 ][ B2 ]

or in resource view horizontally in a tree style
[ROOM A]
[A1]
[A2]

Please advise
Mickey

Scheduler

answered on 03 May 2010

2 answers

175 views

Bar Chart, align right?

I have my chart floating right on my page and I'd like to have the bars also align right so they scale out to the left

...easy to do?

Chart (Obsolete)

answered on 03 May 2010

2 answers

132 views

[Solved] Grid data resets after showing/hiding filter row

I have 2 image columns whose url's are based on the value of another column and an upper and loer limit that the user can select from a rad window.
The Rad window is called from the rad grid and when it closes it updates the image columns based on the values the user selects.
I also have server side code that shows or hides the filter row. At the end it calls the rebind() method to show or hide the filter row.
My problem is that when it does the rebind I lose the limits the user set as well as the image url's because it goes back to the way it was when it was originally loaded.
What can I do to get the grid to stay the way it was and show or hide the filter row?
Thank you.

    
            Protected Sub GrdPoints_ItemCommand(ByVal source As Object, ByVal e As GridCommandEventArgs) _  
        
                                 Handles GrdPoints.ItemCommand  
        
                    If e.CommandName = "PointsFilter" Then 
        
                        If GrdPoints.MasterTableView.AllowFilteringByColumn = False Then 
        
                            GrdPoints.MasterTableView.AllowFilteringByColumn = True 
        
                        Else 
        
                            GrdPoints.MasterTableView.AllowFilteringByColumn = False 
        
                        End If 
        
                        GrdPoints.MasterTableView.Rebind()  
        
                    End If 
        
                End Sub

Grid

answered on 03 May 2010

7 answers

147 views

Add/Edit with user defined primary key

Can you give any suggestion on working with add and edit operation with a sample like the NorthWind Customers db?
With identity keys your examples seem to ignore the value and hide it from the user, but do you have a demo like the above.
Phil

Grid

answered on 03 May 2010

3 answers

276 views

How Can i Block Scheduler Slot Of Some Time Interval

Hello Sir,

How Can i Block Scheduler Slot Of Some Time Interval

For Example :-

My Scheduler Time Between 9:00AM To 8:00PM

And i want Block :- 10:00AM to 11:00AM And 01:00PM to 03:00PM

How can i Achive It. Please Help Me.

Thanks
Chandan Kumar

Scheduler

answered on 03 May 2010

1 answer

111 views

Editor bug?

Hello

We have tested Telerik for about 14 days being a potential user (customer) in the future. It looks good.

BUT One thing we found is that the Editor is not working properly.

If you start on a blank page at change the font from (default) Times New Roman to eg Arial and afterwards changes to eg. 22px the font will jump back to Times New Roman. Check under asp.net ajax under Editor demo first look.

Can you please correct this?

NB We need the editor in a customer case

Thanks

Steffen

Editor

answered on 03 May 2010