Finding controls within "AppointmentTemplate"

[prashanth_t]

I'm using a Rad Scheduler. Setting the datasource through programming. In the appointment template I've defined 5 labels. For each day the appointment template would carry these 5 labels. However there will be difference in the data it carries and the formatting of the labels too will be different for different criteria. I'm able to get/set the data, but not able to do the formatting.
Given below is the aspx syntax.

 

 

<telerik:RadScheduler ID="RadScheduler2" runat="server" DataEndField="DutyEnd"

DataKeyField="Id" DataStartField="DutyStart" CustomAttributeNames="HoursPerDay"

DataSubjectField="Date"

onappointmentcommand="RadScheduler2_AppointmentCommand"

onappointmentdatabound="RadScheduler2_AppointmentDataBound"

onformcreated="RadScheduler2_FormCreated">

<AppointmentTemplate>

<asp:Label Text='<%# Bind("HoursPerDay") %>' runat="server" ID="lblTest"></asp:Label><br />

<asp:Label Text="This is a test2" runat="server" ID="Label8"></asp:Label><br />

<asp:Label Text="This is a test3" runat="server" ID="Label9"></asp:Label><br />

<asp:Label Text="This is a test4" runat="server" ID="Label10"></asp:Label><br />

<asp:Label Text="This is a test5" runat="server" ID="Label11"></asp:Label><br />

</AppointmentTemplate>

</telerik:RadScheduler>

On code behind I'm able to set the value as shown below. 

 

protected void RadScheduler2_AppointmentDataBound(object sender, SchedulerEventArgs e)
        {
e.Appointment.Attributes["HoursPerDay"] = "Value from DB";
}

However In addition to this I would like to do formatting on the labels based on certain criteria. For example for the label "lblTest" need to set the font color to Red, set the visible property of the label to "true/false", etc............. Basically I need a way to find out the control within the appointment template.

I'm unable to do this. Appreciate if some one could let me know how to achieve this (please provide with some code sample)

Thank you.

[Peter]

Hi prashanth_t,

You could add additional custom attributes to carry the formatting information such as "BacgroundColorCustomAttribute" or "FontColorCustomAttribute". The approach is exactly the same that you have already done for the label's Text with  the "HoursPerDay" attribute.


Kind regards,
Peter
the Telerik team

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[prashanth_t]

Hi Peter,
Thanks for your reply.
I tried your suggestion. With some minor adjustment I was able to set the visible property of the control within the "AppointmentTemplate". However setting formatting information (ForeColor, Backcolor) is not successful.

The following works.

 

e.Appointment.Attributes[

"CustomVisibility"] = "false";  

 

 

 

Visible='<%# Convert.ToBoolean(Eval("CustomVisibility")) %>'>

However the following fails. It throws a runtime exception ("Specified cast is not valid").
e.Appointment.Attributes["CustomForeColor"] = "Red";

ForeColor='<%# Eval("CustomForeColor") %>'

(I may be missing some thing; please let me know if you have a work around)

Also, I want to add another question. In my project the RadScheduler is used only to display information(using specifically for the calendar view).
Is it possible to expand area based on the content. For eample if I'm displaying 10 labels (one in each line seperated by line breaks), I want this information to be available in all views.

In the day view it is OK (unless the duration between the starttime(startdate) and endtime(enddate) are just one or two hours.
In the "week view" the data is getting sqeezed so that I can only see part of the information.
In the "Month view" it just partially displays the first label info.

I tried using panel with scroll bars enabled (it doesn't help a lot). It would be great if there is a way to resize the calendar view based on the information contained within. Appreciate if you can let me know if there are any properties to achieve this in RadScheduler.

Thank you.

[Peter]

Hello prashanth,

Please, review this help topic on custom attributes and resources:
http://www.telerik.com/help/aspnet-ajax/schedule_designcustomresourcesandattributes.html
I hope you find it helpful.

As for the other question, please consider using the RowHeight property.


All the best,
Peter
the Telerik team

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[Graham]

I'm am using a much later version (2013.1.220.40) but getting the exact same 'Specified cast is not valid' error using this code:

<asp:Label ID="CompanyName" runat="server" Text='<%# Eval("CompanyName") %>' ForeColor='<%# Eval("TextColor") %>'></asp:Label>

My text colors are hexadecimal codes, e.g. '#000000'.

Also, the hyperlink for "help topic on custom attributes and resources:" that Prashanth provides is broken.

Quick update: changed the line as follows:

<asp:Label ID="CompanyName" runat="server" Text='<%# Eval("CompanyName") %>' ForeColor='<%# System.Drawing.ColorTranslator.FromHtml(Eval("TextColor")) %>'></asp:Label>

but this gives new error:

Compiler Error Message: CS1502: The best overloaded method match for 'System.Drawing.ColorTranslator.FromHtml(string)' has some invalid arguments

My "TextColor" attribute definitely has a valid hex string for a color.

[Plamen]

Hi Graham ,

 
You can try to set the desired ForeColor in the code behind in the RadScheduler1_AppointmentCreated event as for example the appointmenttempalte is customized in this on-line demo.

As for the broken link -this is the right one by I do not think it will be helpful in this case.

Hope this information will be helpful.

Greetings,
Plamen
the Telerik team