Hello,
I am new to telerik controls. today i try to show a bar chart with data binding, but always unable to see the bars, only empty chart. below is the xaml and view model. thanks in advance for your help!

Thank you,
Alex

Hello ,

How do I know that up/down button has pressed. I tried it using valueChanged event but I could not figure out that the value has changed by either from the Textbox or from the up/down buttons.

Thanks in Advance.

Regards,
KK

I use to display RadCartesianChart Candlestick for software exchange.

when I board units on the X axis DateTimeContinuousAxis MajorStepUnit = "Hour" or minutes I would like to define the hours of closure of stock exchanges
  and for the weekend, so it does not appear on the graph as the data is empty periods for its

Thanks.

Hi,

I have the following code:

    dim objectControl as new myCustomControl  'This control have two buttons "OK" and "CANCEL"

            With radObjectWindow
                
                .Header = "Some text...."
                .WindowStartupLocation = WindowStartupLocation.CenterScreen
                .ResizeMode = ResizeMode.NoResize
                
                .Owner = Owner '(Window.GetWindow(me))
                .Content = objectControl

                .ShowDialog()

            End With

This code works fine, the modal window have a behavior expected, but how capture the "OK" or "CANCEL" click action....from buttons into a RadWindow....into a CustomControl.....

In fact, I have understood that the radwindow is asynchronous, then how to make action buttons in the custom control affect the program flow of this modal window .....

Thanks....

Hi, I am not sure that's true cause I Use this WCF : 

Interface : 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;

namespace WcfServiceHotel
{
[ServiceContract]
public interface IServiceHotel
{

[OperationContract]
List<UserDetail> GetUserDetail(int id);

[OperationContract]
String InsertUserDetail(UserDetail userinfo);

[OperationContract]
List<UserDetail> GetAllHotel();

}

[DataContract]
public class UserDetail
{
int _id = 0;
string _Nom = String.Empty;
string _Ville = String.Empty;

[DataMember]
public int Id
{
get { return _id; }
/*private*/ set { _id = value; }
}

[DataMember]
public string Nom
{
get { return _Nom; }
set { _Nom = value; }

}

[DataMember]
public string Ville
{
get { return _Ville; }
set { _Ville = value; }
}

}

}

Class : 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using System.Data.SqlClient;
using System.Data;

namespace WcfServiceHotel
{
public class ServiceHotel2 : IServiceHotel
{
SqlConnection con = new SqlConnection("Data Source=.\\SqlEXPRESS;Initial Catalog=GestionHotel;Integrated Security=True");

public List<UserDetail> GetUserDetail(int id)
{
List<UserDetail> userdetail = new List<UserDetail>();
{
con.Open();
SqlCommand cmd = new SqlCommand("Select * from HotelIdentite where Id = @id", con);
// SqlCommand cmd = new SqlCommand("Select * from HotelIdentite where Id like '%'+@id+'%'", con);
cmd.Parameters.AddWithValue("@id", id);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count > 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
UserDetail userInfo = new UserDetail();
userInfo.Nom = dt.Rows[i]["Nom"].ToString();
userInfo.Ville = dt.Rows[i]["Ville"].ToString();
userdetail.Add(userInfo);
}
}
con.Close();
}
return userdetail;
}

public List<UserDetail> GetAllHotel()
{
List<UserDetail> usd = new List<UserDetail>();
{
con.Open();
SqlCommand cmd = new SqlCommand("Select Id,Nom,Ville From HotelIdentite", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count > 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
UserDetail ud = new UserDetail();
ud.Id = int.Parse(dt.Rows[i]["Id"].ToString());
ud.Nom = dt.Rows[i]["Nom"].ToString();
ud.Ville = dt.Rows[i]["Ville"].ToString();
usd.Add(ud);
}
}
con.Close();
}
return usd;
}

public string InsertUserDetail(UserDetail userinfo)
{
string strMessage = string.Empty;
con.Open();
SqlCommand cmd = new SqlCommand("Insert into HotelIdentite (Nom,Ville) Values (@Nom,@Ville)", con);
cmd.Parameters.AddWithValue("@Nom", userinfo.Nom);
cmd.Parameters.AddWithValue("@Ville", userinfo.Ville);
int result = cmd.ExecuteNonQuery();
if (result == 1)
{
strMessage = userinfo.Id + " Details inserted successfully";
}
else
{
strMessage = userinfo.Id + " Details not inserted successfully";
}
con.Close();
return strMessage;
}

//public override string ToString(int index, [OptionalField] int id,[OptionalField] UserDetail userinfo)
//{
// string result;
// switch (index)
// {
// case 1:
// GetUserDetail(id);
// break; 
// case 2 :
// InsertUserDetail(userinfo);
// break;
// }

// return result;
//}
}
}

So for implemente I use two client : a Windows phone and WPF

for the WPF client the GetAllHotelCompletedEventArgs is missing and the same thing for the others methods and all the methods are not VOID :

Help me please 
Tahnk you 

Hi everyone,
 
 we're moving from WinForms to WPF.

Our old WinForms-Application had a third-party grid which was able to group columns and freeze them on the left and right.

According to several general WPF forums (see also Telerik-GridView threads: http://www.telerik.com/community/forums/silverlight/gridview/how-to-lock-the-columns.aspx
 http://www.telerik.com/community/forums/silverlight/gridview/freezing-last-column.aspx ) freezing columns on the right seems to be a missing functionality in all(?) WPF datagrids.
 
Surely, we don't want our customers to miss that functionality, so we have written a custom control which contains two datagrids (System.Windows.Controls.DataGrid, one to the left and one to the right).
Both datagrids share the same itemssource and actions like sorting, vertical scrolling, selecting, columns/row resizing, mouse over events etc. were "synchronised".
To have a column frozen to the left, the column is "moved" (= visibilty switch) to the left datagrid, its display index is set to "FrozenColumnCount + 1" and the FrozenColumnCount is increased.
To have a column frozen to the right, the column is moved to the right datagrid where all columns were frozen.(*)

This custom control delivered a grid which was able to freeze columns on the left and the right.
Still missing was that grouping function which the old WinForms grid additionally had.

We decided to use the Telerik GridView which should replace the datagrid in our custom control.

Same procedure as mentioned...additionally we had to "synchronise" the grouping and the expanding/collapsing of each GridViewGroupRow.
Last-mentioned seems to be an unmanageable hurdle.
The "synchronising" of the grouping enables that the same GridViewGroupRows are available in both datagrids.
If a GridViewGroupRow is expanded or collapsed, we programmatically look for the GridViewGroupRow with the same group key (and parent group keys) in the other GridView and set the "IsExpanded" property to the according value. At first glance this seemed to work, but unfortunately sometimes the GridViewGroupRow stayed collapsed/expanded in the UI.
According to the debugger the property is also correctly set, the UI is not blocked.

We have no explanation for this and don't expect them here. This thread should only share our attempt to create a grid with left and right freezing and grouping functionality, in hope to gain some other valuable programmers experience/information concerning this matter and answers to following questions:

Has anyone successfully created a grid which has draggable grouping and left and right freezing functionality?

Is Telerik planning to extend the GridView with 'freezing right/last columns' functionality?

Answers why the GridViewGroupRow does sometimes not collapse/expand if this is done programmatically
(Note: Virtualization has been disabled! And even if not, the according GridViewGroupRow is available programmatically and visible in UI) ?



--------------------------------------------------------------------------
Notes only for those interesting which like to implement it that way:
(*) Left datagrid should be in a column definition with GridLength.Star, right datagrid should be in a column definition with GridLength.Auto.
Width of right datagrid must be calculated (sum each visible column width) since datagrid doesn't auto resize if columns are narrowed.

Is it possible to override the default behavior of RadGridView and display combobox with "Yes" and "No" instead of checkboxes for boolean columns?

I'm trying to accomplish a scenario and I'm failing to find a decent info about your drag and drop implementation. Help is seriously lacking info and have mixed RadDragAndDropManager and DragDropManager content which doesn't helps at all.

My scenario:

 - Read only list (displayed in a RadListBox)

 - Another RadListBox that should be populated with items from first one

 - A Converter that converts items from one format to another

So I would like that items from first list aren't removed. In my current implementation I'm receiving an exception when dropping items on second list telling me that ItemsSource from the read-only listbox cannot be modified.

Any hints on how to accomplish this simple requirement?

Thanks

Exception details:

Hi again,

I have now managed to get the TrackBallInfo popup window to look almost as I want it but one thing remains: I would like to have the header present the datapoint's current Category. 

Having examined all the demos I've seen that I can in fact have the first series also present such a header for me but that won't work if the user opts that data series out of the presentation. I could have a "special" series with null values just to achieve this but that would be very a very clunky solution.

I have also seen that I can use one of the indicators but they all seem to end up at the bottom of the info window.

Could you please direct me to whatever documentation that explains how to template the info window while using the current datapoints?

Thanks

In   the  behind  code  can't   obtain   the  "Content"     of   Shap   which  is  a  item  of    Diagram control .

This    is   a   serious   problem  ,   indicating   that   the   "  not   will  object    reference    set    to     an    instance   of     an object.   "    error.

XAML：
       <telerik:RadDiagramShape Geometry="{telerik:CommonShape ShapeType=RoundedRectangleShape}" 
             x:Name="rd_SiPing" Width="100" Height="35"
             Content="Harvard University"
             Tag="A"
             FontSize="14"
             Position="193,120"
             Background="LightGray"                      
             MouseLeftButtonDown="rd_SiPing_MouseLeftButtonDown" >
                            
            </telerik:RadDiagramShape>


             <telerik:RadDiagramShape Geometry="{telerik:CommonShape ShapeType=RoundedRectangleShape}" 
             x:Name="rd_SiPingValue" Width="100" Height="25"
             Content="1716.0kW"
             Tag="A"
             FontSize="12"
             Position="193,160"
             Background="LightGray"    
            />


Code  behind:
        private void rd_SiPing_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            string str = rd_SiPingValue.Content.ToString();
            string strtwo = rd_Region.Content.ToString();
            string strthree = rd_SiPing.Tag.ToString();

          Question:   Three   lines   of   code   as   above    are   all   prompt     error:   "not   will  object    reference    set    to     an    instance   of     an object."
            Why???    
        }