Questions on UI for ASP.NET AJAX Forum

1 answer

125 views

My user has asked to add the ability to hit ctrl+a to run the Add New Record link on the grid. How can I provide this capability?

On a HRef html attribute, I would simply add a accesskey setting. How can I do this in the RadGrid?

Thanks for your help.

Grid

answered on 31 Dec 2012

1 answer

898 views

a Datatable named '' already belongs to this dataset

"a Datatable named 'table' already belongs to this dataset" is the error I am getting in a message box on my page. Here is the scenario of what is going on. I am saving the users grouped columns in my database. Upon reentering the page I pull from the database and regroup the grid using the stored values. Example of stored value: Balance Type|balance_type - First item is the name I use to display and the second is the actual field name that we want to group on. This works beautifully. They can save this and renter the grid and the settings is there. BUT!!! When the user selects to change the grid page size is when it generates the above error. I cannot determine where this is happening or why.

I am using needdatasource to bind my data from the SQL server and settting the grids settings after I populate the grid. I only get the settings from the database on the first load of the page because I don't want to stomp on the users changes every time they do something that might cause a postback to the page, that would be annoying.

So any ideas on what this is or why it is happening would be greatly appreciated.

Grid

answered on 31 Dec 2012

1 answer

50 views

What has changed to the height recently?

Hi,

I've just been alerted by a user that the latest version of the RadTreeView is now rendering extra height on the page - using the Black skin.

If I set the row height to 20 px I seem to end up with an extra 1px border being added. Interestingly when I do a mouse over the border for that row collapses and the row position moves up and to the left.

Please let me know what CSS hack I can apply to remove this behaviour. I've played around with the CSS tools in Chrome but couldn't find the problem..

Regards,

Jon

TreeView

answered on 31 Dec 2012

7 answers

128 views

[Solved] Change row view on row drag started?

Is it possible to change the view of the row when you drag it? By default you get to see a full floating row when you start to drag it. I would like to change this to an icon, basically the way Windows Explorer works when you drag a row from the details view.

I'm looking at the row drag started client side event to achieve this but not sure if that is correct or if indeed this is possible?

Grid

answered on 31 Dec 2012

4 answers

334 views

Dynamically created controls disappear or multiply on postback

Hi There,

I'm trying to add some extra GridTemplateColumns on my Page_Init using my own custom template class. When the page loads the first time, everything is fine and dandy. Yet after a postback from a filter or paging command, things go horribly wrong. More specifically, the extra columns that I i'm adding on Page_Init remain, but for every postback, an extra set of blank columns are added to the grid. My initial thought was to just wrap my Page_Init inside a if(!isPostBack) statement, but then no extra columns show at all after a postback. Please help!

Here's my Page_Init:

    
            protected void Page_Init(object sender, EventArgs e) 
        
                { 
        
                    ListBuilderTableAdapters.listsTableAdapter listAdapter = new ListBuilderTableAdapters.listsTableAdapter(); 
        
                    ListBuilder.listsDataTable dt = listAdapter.GetActive(); 
        
                    foreach (ListBuilder.listsRow dr in dt.Rows) 
        
                    { 
        
                        GridTemplateColumn gtc = new GridTemplateColumn(); 
        
                        gtc.HeaderText = dr.list_name; 
        
                        gtc.ItemTemplate = new MailingListTemplate(dr.list_name, dr.id); 
        
                        mlRadGrid.MasterTableView.Columns.Add(gtc); 
        
                    } 
        
                }

... and my custom template looks like this.

    
            public class MailingListTemplate : ITemplate 
        
                { 
        
                    protected string Text; 
        
                    protected int listID; 
        
                    public MailingListTemplate(string Text, int listID) 
        
                    { 
        
                        this.listID = listID; 
        
                        this.Text = Text; 
        
                    } 
        
                    public void InstantiateIn(Control container) 
        
                    { 
        
                        HiddenField hf = new HiddenField(); 
        
                        hf.Value = listID.ToString(); 
        
                        CheckBox cb = new CheckBox(); 
        
                        container.Controls.Add(hf); 
        
                        container.Controls.Add(cb); 
        
                    } 
        
                }

Also, my NeedDataSource uses the same datasource that I bind to on my Page_Load:

    
            protected void mlRadGrid_NeedDataSource(object source, GridNeedDataSourceEventArgs e) 
        
                { 
        
                        mlRadGrid.DataSource = recipientAdapter.GetUnique(); 
        
                }

Grid

answered on 31 Dec 2012

1 answer

73 views

Remove sorting bg color

hi there,
i have set sorting in grid. its working good. but i want to do away with these sorting background colors. can somebody help me out pls. thanks in advance

savyo

Grid

answered on 31 Dec 2012

1 answer

97 views

Disable filtering in columns

Hi,
I have a problem setting the allowfiltering to true in radgrid. Filtering is appearing in all the columns. How do I disable filtering in the first 2 bound columns.

thanks
Allen

Grid

answered on 31 Dec 2012

4 answers

182 views

Telerik TabStrip w/ Google Maps On tabs other than Selected on load

Hello,

I have attached code that will allow you to recreate the issue. I want to embed google maps in a tab lay out. I want the map to be on the last tab.

It seems if the tab is selected on page load, the map renders correctly but if not, it will not. To illustrate this, I made a tab strip with two tabs, each with an IFRAME inside. Play with SelectedIndex and what not to see what is happening.

Essentially, whichever pageview will render the IFRAME correctly. I need a way to display the IFRAME on a tab that is not selected on load. Please advise.

Thanks,
Nelson

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="test.aspx.vb" Inherits="test" %>

<!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></title>

</head>
<body>
<form id="form1" runat="server">
<telerik:RadScriptManager ID="RadScriptManager1"
EnablePartialRendering="true"
AsyncPostBackTimeOut="600"
runat="server" >
</telerik:RadScriptManager>

<div>

<telerik:RadTabStrip CausesValidation="false" ID="tabInspections" runat="server" Skin="Web20" Width="910px" CssClass="DetailsRadStrip" SelectedIndex="0" MultiPageID="mp1">

<Tabs>
<telerik:RadTab Text="1" Value="1" PageViewID="pv1" ></telerik:RadTab>
<telerik:RadTab Text="2" Value="2" PageViewID="pv2" ></telerik:RadTab>
</Tabs>
</telerik:RadTabStrip>

<telerik:RadMultiPage ID="mp1" runat="server" CssClass="pageView" Width="910px">
<telerik:RadPageView ID="pv1" runat="server" Selected="true">
<iframe ID="externalFrame" runat="server" frameborder="0" height="100%"
scrolling="no" marginheight="0" marginwidth="0" style="display: block; text-align: left; " width="100%"></iframe>
</telerik:RadPageView>
<telerik:RadPageView ID="pv2" runat="server">
<iframe ID="externalFrame2" runat="server" frameborder="0" height="100%"
scrolling="no" marginheight="0" marginwidth="0" style="display: block; text-align: left; " width="100%"></iframe>
</telerik:RadPageView>
</telerik:RadMultiPage>
</div>
</form>
</body>
</html>

Partial Class test
Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
externalFrame.Attributes.Add("src", "http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=495 Eastern Avenue, Chelsea, MA&aq=0&sll=42.348776,-71.072316&sspn=0.028482,0.026565&vpsrc=0&ie=UTF8&hq=&hnear=495 Eastern Ave, Chelsea, Massachusetts 02150&z=14&iwloc=A&output=embed")
externalFrame2.Attributes.Add("src", "http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=495 Eastern Avenue, Chelsea, MA&aq=0&sll=42.348776,-71.072316&sspn=0.028482,0.026565&vpsrc=0&ie=UTF8&hq=&hnear=495 Eastern Ave, Chelsea, Massachusetts 02150&z=14&iwloc=A&output=embed")

End Sub
End Class

TabStrip

answered on 31 Dec 2012

1 answer

145 views

Error: Sys.WebForms.PageRequestManagerServerErrorException: 'column' has a SelectedValue which is invalid because it does not exist in the list of items.

Hi,
I have a radgrid. I have added a dropdown in the radgrid, which is as follows:

<ItemTemplate>

<asp:DropDownList ID="ddlGender" runat="server" SelectedValue='<%# Eval("UGender") %>' />

<asp:TextBox ID="txtUserId" ReadOnly="true" runat="server" Text='<%# Eval("UserId") %>' />

</ItemTemplate>

<InsertItemTemplate>

<asp:DropDownList ID="ddlGender" runat="server">

<asp:ListItem Text="Male" Value="Male"></asp:ListItem>

<asp:ListItem Text="Female" Value="Female"></asp:ListItem>

</asp:DropDownList>

<asp:TextBox ID="txtUserId" runat="server" ></asp:TextBox>

</InsertItemTemplate>

In the Insertcommand, i am setting the value to a datatable as below:

DataTable test1 = new DataTable();

GridDataInsertItem item = (GridDataInsertItem)e.Item;

DropDownList ddlGender = (DropDownList)item.FindControl("ddlGender");

string ddlGendervalue = ddlGender.SelectedValue;

DataRow dr = test1.NewRow();

dr["UGender"] = ddlGendervalue;

test1.Rows.Add(dr);

radgridl.DataSource = this.test1;

I am getting the selected value of the dropdown. However, i am getting the below javascript error and insert is not happening.

Sys.WebForms.PageRequestManagerServerErrorException: 'ddlGender' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value

How to fix this?

Thanks

Grid