Questions on UI for ASP.NET AJAX Forum

2 answers

265 views

Having issues in Telerik's RadScheduler when using recurrence fields and events

I am using RadScheduler for showing/creating the Appointments in my Database.
My code is working fine (Create, Retrieve, Update, Delete) as long as I have non-recurring Appointments. But, as soon as a recurring type Appointment comes in account, everything stops working and I get following error on postback:
Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.

What am I doing wrong here?
Following is my code, On .ASPX page:

<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server">

<telerik:RadScheduler ID="RadScheduler1" runat="server" TimeZoneOffset="00:00:00" AdvancedForm-EnableCustomAttributeEditing="true"

SelectedView="MonthView" OverflowBehavior="Expand" StartInsertingInAdvancedForm="true" EnableViewState="true"

DataKeyField="AppointmentID" DataStartField="CalendarStartDateTime" DataEndField="CalendarEndDateTime"

DataSubjectField="AppointmentBody" DataRecurrenceField="RecurrenceRule" DataRecurrenceParentKeyField="ParentAppointmentID"

DataReminderField="Reminder" OnAppointmentCreated="RadScheduler1_AppointmentCreated" OnAppointmentInsert="RadScheduler1_AppointmentInsert"

OnAppointmentUpdate="RadScheduler1_AppointmentUpdate" OnAppointmentDelete="RadScheduler1_AppointmentDelete"

OnRecurrenceExceptionCreated="RadScheduler1_RecurrenceExceptionCreated" OnReminderDismiss="RadScheduler1_ReminderDismiss"

OnReminderSnooze="RadScheduler1_ReminderSnooze">

<AdvancedForm Modal="true"></AdvancedForm>

<Reminders Enabled="true" MaxAge="5"></Reminders>

<TimeSlotContextMenuSettings EnableDefault="true"></TimeSlotContextMenuSettings>

<AppointmentContextMenuSettings EnableDefault="true"></AppointmentContextMenuSettings>

</telerik:RadScheduler>

</asp:Content>

And Code on .CS page:

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

BindAppointments();

}

private void BindAppointments()

{

try

{

List<AppointmentEN> lstAppointment = AppointmentProvider.GetAppointments();

foreach (var item in lstAppointment)

{

item.RecurrenceRule = string.IsNullOrWhiteSpace(item.RecurrenceRule) ? null : item.RecurrenceRule;

item.ParentAppointmentID = item.ParentAppointmentID == 0 ? null : item.ParentAppointmentID;

}

RadScheduler1.DataSource = lstAppointment;

RadScheduler1.DataBind();

RadScheduler1.SelectedView = SchedulerViewType.MonthView;

RadScheduler1.SelectedDate = DateTime.Now;

//RadScheduler1.Visible = true;

}

catch (Exception ex)

{

}

I have found that doing EnableViewState="false" does the job, but I don't want to do that because then other functionalities like Rescource editing stops working correctly.

Scheduler

answered on 07 May 2014

1 answer

82 views

Bindind hidden properties between two grids

Hello together,

as this is my first post on this forums and am new to telerik components, please be gentle, if this is a dumb question. ;-)

I try to use two RadGrids which are linked together:

<telerik:RadGrid ID="rgCompanies" runat="server"
        AllowPaging="True" AllowAutomaticUpdates="False" AllowAutomaticInserts="False"
        AllowAutomaticDeletes="False" AllowSorting="true"
        DataSourceID="Companies">
        <MasterTableView AutoGenerateColumns="False"
            DataKeyNames="CompanyId">
            <Columns>
                <telerik:GridBoundColumn DataField="CompanyId" HeaderText="Nr." SortExpression="CompanyId"
                    UniqueName="CompanyId" Visible="true" ReadOnly="true" MaxLength="5">
                </telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="CompanyName" HeaderText="Unternehmensname" SortExpression="CompanyName"
                    UniqueName="CompanyName" Visible="true" ItemStyle-Width="150" DataFormatString="{0}" ReadOnly="true">
                </telerik:GridBoundColumn>
            </Columns>
        </MasterTableView>
        <ClientSettings AllowKeyboardNavigation="true" EnablePostBackOnRowClick="true">
            <Selecting AllowRowSelect="true"></Selecting>
        </ClientSettings>
    </telerik:RadGrid>

and

<telerik:RadGrid ID="rgProducts" runat="server" AllowPaging="True" AllowAutomaticUpdates="True" AllowAutomaticInserts="True"

AllowAutomaticDeletes="True" AllowSorting="true"

DataSourceID="Products">

<MasterTableView AutoGenerateColumns="False"

DataKeyNames="ProductId" CommandItemDisplay="Top" >

<Columns>

<telerik:GridEditCommandColumn ButtonType="ImageButton" UniqueName="EditCommandColumn" ShowSortIcon="false">

<HeaderStyle ForeColor="DimGray" Width="20px" />

<ItemStyle HorizontalAlign="Center" />

</telerik:GridEditCommandColumn>

<telerik:GridButtonColumn ConfirmText="Dieses Produkt wirklich löschen?" ConfirmDialogType="RadWindow"

ConfirmTitle="Löschen" ButtonType="ImageButton" CommandName="Delete" />

<telerik:GridBoundColumn DataField="ProductId" HeaderText="Nr." SortExpression="ProductId"

UniqueName="ProductId" Visible="true" ReadOnly="true" MaxLength="5">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="Grammage" HeaderText="Grammatur" SortExpression="Grammage"

UniqueName="Grammage1" Visible="true" ReadOnly="false" DataFormatString="{0} g/m²">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="Width" HeaderText="Breite" SortExpression="Width"

UniqueName="Width" Visible="true" ReadOnly="false" DataFormatString="{0} cm">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="Height" HeaderText="Höhe" SortExpression=".Height"

UniqueName="Height" Visible="true" ReadOnly="true" DataFormatString="{0} cm">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="NumberOfPages" HeaderText="Umfang" SortExpression="NumberOfPages"

UniqueName="NumberOfPages" Visible="true" ReadOnly="true" DataFormatString="{0} Seiten">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="PrintType1.PrintTypeName" HeaderText="Drucktyp" SortExpression="PrintType1.PrintTypeName"

UniqueName="PrintType1.PrintTypeName" Visible="true" ReadOnly="true">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="Refinement1.RefinementName" HeaderText="Veredelung" SortExpression="Refinement1.RefinementName"

UniqueName="Refinement1.RefinementName" Visible="true" ReadOnly="true">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="PaperType1.PaperTypeName" HeaderText="Papersorte" SortExpression="PaperType1.PaperTypeName"

UniqueName="PaperType1.PaperTypeName" Visible="true" ReadOnly="true">

</telerik:GridBoundColumn>

</Columns>

<EditFormSettings EditFormType="Template">

<FormTemplate>

<asp:TextBox ID="tbGrammage" runat="server" Text='<%# Bind("Grammage") %>'>

</asp:TextBox>

<asp:TextBox ID="tbWidth" runat="server" Text='<%# Bind("Width") %>'>

</asp:TextBox>

<asp:TextBox ID="tbHeight" runat="server" Text='<%# Bind("Height") %>'>

</asp:TextBox>

<asp:TextBox ID="tbNumberOfPages" runat="server" Text='<%# Bind("NumberOfPages") %>'>

</asp:TextBox>

<asp:DropDownList ID="ddlPrintType" runat="server" SelectedValue='<%# Bind("PrintType") %>' AppendDataBoundItems="true"

DataSourceID="PrintTypes" DataValueField="PrintTypeId" DataTextField="PrintTypeName">

</asp:DropDownList>

<asp:DropDownList ID="ddlPaperType" runat="server" SelectedValue='<%# Bind("PaperType") %>' AppendDataBoundItems="true"

DataSourceID="PaperTypes" DataValueField="PaperTypeId" DataTextField="PaperTypeName">

</asp:DropDownList>

<asp:DropDownList ID="ddlRefinement" runat="server" SelectedValue='<%# Bind("Refinement") %>' AppendDataBoundItems="true"

DataSourceID="Refinements" DataValueField="RefinementId" DataTextField="RefinementName">

</asp:DropDownList>

<asp:Button ID="btnUpdate" Text='<%# (Container is GridEditFormInsertItem) ? "Insert" : "Update" %>'

runat="server" CommandName='<%# (Container is GridEditFormInsertItem) ? "PerformInsert" : "Update" %>'></asp:Button>

<asp:Button ID="btnCancel" Text="Cancel" runat="server" CausesValidation="False"

CommandName="Cancel"></asp:Button>

</FormTemplate>

</EditFormSettings>

</MasterTableView>

<ClientSettings AllowKeyboardNavigation="true" EnablePostBackOnRowClick="true">

<Selecting AllowRowSelect="true"></Selecting>

</ClientSettings>

</telerik:RadGrid>

and the DataSources:

<asp:EntityDataSource ID="Companies" runat="server"