Imports System.Windows.Data

Public Class DecimalZeroBlankConverter
    Implements IValueConverter

    Public Function Convert(value As Object, targetType As Type, parameter As Object, culture As Globalization.CultureInfo) As Object Implements IValueConverter.Convert
        If value Is Nothing Then
            Return Nothing
        End If

        If value = 0 Then
            Return Nothing
        End If

        Dim dec As Decimal = value

        Return dec.ToString("###,###,##0.00")
    End Function

    Public Function ConvertBack(value As Object, targetType As Type, parameter As Object, culture As Globalization.CultureInfo) As Object Implements IValueConverter.ConvertBack
        Throw New NotImplementedException
    End Function
End Class

Imports System.Windows.Data

Public Class PercentageConverter
    Implements IValueConverter

    Public Function Convert(value As Object, targetType As Type, parameter As Object, culture As Globalization.CultureInfo) As Object Implements IValueConverter.Convert
        If value Is Nothing Then
            Return 0
        End If

        Return value * 100
    End Function

    Public Function ConvertBack(value As Object, targetType As Type, parameter As Object, culture As Globalization.CultureInfo) As Object Implements IValueConverter.ConvertBack
        If value Is Nothing Then
            Return 0
        End If

        If String.IsNullOrEmpty(value) Then
            Return 0
        End If

        Return value / 100
    End Function
End Class

Imports System.Windows.Data

Public Class YesNoVisibilityConverter
    Implements IValueConverter

    Public Function Convert(value As Object, targetType As Type, parameter As Object, culture As Globalization.CultureInfo) As Object Implements IValueConverter.Convert
        If value Is Nothing Then
            Return Visibility.Collapsed
        End If

        If value = "Y" Then
            Return Visibility.Visible
        Else
            Return Visibility.Collapsed
        End If
    End Function

    Public Function ConvertBack(value As Object, targetType As Type, parameter As Object, culture As Globalization.CultureInfo) As Object Implements IValueConverter.ConvertBack
        Throw New NotImplementedException
    End Function
End Class

Imports System.Windows.Data

Public Class BooleanFontWeightConverter
    Implements IValueConverter

    Public Function Convert(value As Object, targetType As Type, parameter As Object, culture As Globalization.CultureInfo) As Object Implements IValueConverter.Convert
        If value Then
            Return FontWeights.Bold
        Else
            Return FontWeights.Normal
        End If
    End Function

    Public Function ConvertBack(value As Object, targetType As Type, parameter As Object, culture As Globalization.CultureInfo) As Object Implements IValueConverter.ConvertBack
        Throw New NotImplementedException
    End Function
End Class

 <TelerikGrid Data="archivePermissions" Height="100%" Width="100%" ScrollMode="GridScrollMode.Scrollable"
                                 Sortable="true" SortMode="SortMode.Single" SelectionMode="GridSelectionMode.Multiple" @bind-SelectedItems="selectedUsers"
                                 FilterMode="GridFilterMode.FilterRow"
                                 OnStateInit="@((GridStateEventArgs<GetArchivePermissionsModel> args) => OnStateInitHandler(args))">
                        <GridColumns>
                            <GridCheckboxColumn SelectAll="true" Width="30px" OnCellRender="@GridHelpers.CenterAlign" />
                            <GridColumn Field="@(nameof(GetArchivePermissionsModel.LastName))" Title="Last Name" />
                            <GridColumn Field="@(nameof(GetArchivePermissionsModel.FirstName))" Title="First Name" />
                            <GridColumn Field="@(nameof(GetArchivePermissionsModel.Role))" Title="Role">
                                <FilterCellTemplate>
                                    <TelerikComboBox Data="roles" Value="@filteredRole" FilterOperator="StringFilterOperator.Contains"
                                                     Width="100%" ValueField="Name" TextField="Name"
                                                     ValueChanged="@(async (string val) =>
                                                                 {
                                                                     filteredRole = val;

                                                                     var filter = context.FilterDescriptor.FilterDescriptors[0] as FilterDescriptor;
                                                                     filter.Value = filteredRole;

                                                                     if (string.IsNullOrEmpty(filteredRole))
                                                                     {
                                                                         await context.ClearFilterAsync();
                                                                     }
                                                                     else
                                                                     {
                                                                         await context.FilterAsync();
                                                                     }
                                                                 })">
                                    </TelerikComboBox>
                                </FilterCellTemplate>
                            </GridColumn>
                        </GridColumns>
                    </TelerikGrid>

    private void GetArchive()
    {
        var dbRoles = SecurityRepository.GetRoles();
        roles = Mapper.Map<IEnumerable<ApplicationRole>, IEnumerable<RoleViewModel>>(dbRoles);

        var dbArchive = DatabaseArchivingRepository.GetArchive(ArchiveId);
        archive = Mapper.Map<Archive, ArchiveViewModel>(dbArchive);
        origName = archive.DisplayName;

        archivePermissions = DatabaseArchivingRepository.GetArchivePermissions(ArchiveId).ToList();

        selectedUsers = archivePermissions.Where(a => a.HasAccess).ToList();
    }

    private void OnStateInitHandler(GridStateEventArgs<GetArchivePermissionsModel> args)
    {
        var state = new GridState<GetArchivePermissionsModel>
        {
            SortDescriptors = new List<SortDescriptor>()
{
                new SortDescriptor("LastName", ListSortDirection.Ascending)
            }
        };

        args.GridState = state;
    }

            <GridColumn Field="@(nameof(ManufacturerSettingsInfo.Region1))" Width="80px" Filterable="false" Groupable="false">
                <Template>
                    @{
                        var row = context as ManufacturerSettingsInfo;
                        if (true)
                        {
                            <span style="font-weight:bold;">@(Converter.ConvertToBlankOrFormattedDecimal(row.Region1))</span>
                        } 
                        else
                        {
                            <span>@(Converter.ConvertToBlankOrFormattedDecimal(row.Region1))</span>
                        }
                    }
                </Template>
            </GridColumn>

@page "/test"

<TelerikTileLayout>
    <TileLayoutItems>
        <TileLayoutItem HeaderText="@date.ToShortDateString()">
            <Content>
                <TelerikCalendar Value="@date" ValueChanged="@CalendarValueChangedHandler" />
            </Content>
        </TileLayoutItem>
    </TileLayoutItems>
</TelerikTileLayout>

@code {

    DateTime date { get; set; } = DateTime.Today;

    public async void CalendarValueChangedHandler(DateTime newDate)
    {
        date = newDate;
        StateHasChanged();
        // await Task.Delay(50).ContinueWith(o => { InvokeAsync(StateHasChanged); });
    }

}