[Solved] Update ItemsSource not working

[Paloma]

Hi there,
I'm using the Silverlight 3 radGridView. I'm loading an image that's able to change. I mean, when the user click the image, the row state changes and the image changes too. I do that to offer the possibility of deleting or recovering an item of the grid.
But when I first click the image, the Description field disappears. It exists in the itemsSource but the radGridView doesn't visualize the Description. When a click the image for a second time, the Description field appears again.
In both cases the itemsSource is identical.
Any ideas?
Thanks in advance

[Pavel Pavlov]

Hello Paloma,

Please let me see the relevant code . Without having this  we can only guess what might be the problem.

Best wishes,
Pavel Pavlov
the Telerik team

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[Paloma]

Hi Pavel,
I paste you the code:

ASPX:

 

 

 

<telerikGridView:RadGridView x:Name="dgPublicados" ItemsSource="{Binding DatosGrid}"

 

 

CanUserFreezeColumns="False" IsReadOnly="True"

 

 

AutoGenerateColumns="False" Width="Auto" Grid.Column="0"

 

 

AutoExpandGroups="True" ShowGroupPanel="False" IsFilteringAllowed="False"

 

 

MaxHeight="300" RowLoaded="dgPublicados_RowLoaded">

 

 

 

<telerikGridView:RadGridView.Columns>

 

 

 

 

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding RutaEliminar, Mode=TwoWay}" Width="37">

 

 

 

<telerikGridView:GridViewDataColumn.CellTemplate>

 

 

 

<DataTemplate>

 

 

 

<Border Margin="4" CornerRadius="3" HorizontalAlignment="Center" VerticalAlignment="Bottom" Width="16" Height="16">

 

 

 

<Image Source="{Binding RutaEliminar}" x:Name="imgEliminar" Stretch="Fill" HorizontalAlignment="Center" VerticalAlignment="Top" Height="16" Width="16" MouseLeftButtonUp="imgEliminar_MouseLeftButtonUp" ToolTipService.ToolTip="Eliminar/Recuperar documento"/>

 

 

 

</Border>

 

 

 

</DataTemplate>

 

 

 

</telerikGridView:GridViewDataColumn.CellTemplate>

 

 

 

</telerikGridView:GridViewDataColumn>

 

 

 

 

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding RutaDescarga, Mode=TwoWay}" Width="37">

 

 

 

<telerikGridView:GridViewDataColumn.CellTemplate>

 

 

 

<DataTemplate>

 

 

 

<Border Margin="4" CornerRadius="3" HorizontalAlignment="Center" VerticalAlignment="Bottom" Width="16" Height="16">

 

 

 

<Image Source="{Binding RutaDescarga}" x:Name="imgDescargar" Stretch="Fill" HorizontalAlignment="Center" VerticalAlignment="Top" Height="16" Width="16" MouseLeftButtonUp="imgDescargar_MouseLeftButtonUp" ToolTipService.ToolTip="Descargar documento"/>

 

 

 

</Border>

 

 

 

</DataTemplate>

 

 

 

</telerikGridView:GridViewDataColumn.CellTemplate>

 

 

 

</telerikGridView:GridViewDataColumn>

 

 

 

 

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding RutaDescargaPDF, Mode=TwoWay}" Width="37">

 

 

 

<telerikGridView:GridViewDataColumn.CellTemplate>

 

 

 

<DataTemplate>

 

 

 

<Border Margin="4" CornerRadius="3" HorizontalAlignment="Center" VerticalAlignment="Bottom" Width="17" Height="17">

 

 

 

<Image Source="{Binding RutaDescargaPDF}" x:Name="imgDescargarPDF" Stretch="Fill" HorizontalAlignment="Center" VerticalAlignment="Top" Height="17" Width="17" MouseLeftButtonUp="imgDescargarPDF_MouseLeftButtonUp" ToolTipService.ToolTip="Descargar documento en PDF"/>

 

 

 

</Border>

 

 

 

</DataTemplate>

 

 

 

</telerikGridView:GridViewDataColumn.CellTemplate>

 

 

 

</telerikGridView:GridViewDataColumn>

 

 

 

 

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Descripcion}" Header="Nombre del fichero" Width="1*"/>

 

 

 

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Grupo}" IsVisible="False" Width="0"/>

 

 

 

</telerikGridView:RadGridView.Columns>

 

 

 

 

<telerikGridView:RadGridView.GroupDescriptors>

 

 

 

<data:GroupDescriptor Member="Grupo" SortDirection="Ascending">

 

 

 

<data:GroupDescriptor.AggregateFunctions>

 

 

 

<data:CountFunction Caption="Total:" />

 

 

 

</data:GroupDescriptor.AggregateFunctions>

 

 

 

</data:GroupDescriptor>

 

 

 

</telerikGridView:RadGridView.GroupDescriptors>

 

 

 

</telerikGridView:RadGridView>

 

 

 

<pager:DataPager Grid.Row="1" Source="{Binding ItemsSource, ElementName=dgPublicados}" IsTotalItemCountFixed="True" Margin="0,5,0,5" DisplayMode="FirstLastPreviousNextNumeric" />


ASPX.CS

 

public

 

class DatosGrid

 

{

 

public long Id { get; set; }

 

 

public string RutaEliminar { get; set; }

 

 

public string Descripcion { get; set; }

 

 

public string RutaDescarga { get; set; }

 

 

public string RutaDescargaPDF { get; set; }

 

 

public string Grupo { get; set; }

 

 

public int Estado { get; set; }

 

 

public byte[] Documento { get; set; }

 

 

public string TipoMime { get; set; }

 

}

 

///

 

<summary>

 

 

/// </summary>

 

 

private IEnumerable ItemsSource

 

{

 

get

 

{

 

var q = from publicado in listaPublicados

 

 

select new DatosGrid

 

{

Id = publicado.Id,

Descripcion = publicado.Descripcion,

RutaEliminar = GetRutaEliminar(publicado.Estado),

RutaDescarga =

"../../Resources/document_attachment.png",

 

RutaDescargaPDF = GetRutaDescarga(publicado.Mime),

Grupo = publicado.Grupo,

Estado = publicado.Estado,

Documento = publicado.Fichero,

TipoMime = publicado.Mime,

};

 

return ((IEnumerable)q.ToList());

 

}

}

 

 

/// <summary>

 

 

/// </summary>

 

 

/// <param name="p_estado"></param>

 

 

/// <returns></returns>

 

 

private string GetRutaEliminar(int p_estado)

 

{

 

string ruta = string.Empty;

 

 

switch (p_estado)

 

{

 

case 0:

 

ruta =

"../../Resources/undo.png";

 

 

break;

 

 

case 1:

 

ruta =

"../../Resources/delete.png";

 

 

break;

 

 

case 2:

 

ruta =

"../../Resources/delete.png";

 

 

break;

 

 

case 3:

 

ruta =

"../../Resources/undo.png";

 

 

break;

 

}

 

return ruta;

 

}

 

///

 

<summary>

 

 

/// </summary>

 

 

/// <param name="sender"></param>

 

 

/// <param name="e"></param>

 

 

private void imgEliminar_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)

 

{

 

if (this.dgPublicados.SelectedItem != null)

 

{

 

long idSelected = ((DatosGrid)this.dgPublicados.SelectedItem).Id;

 

 

for (int i = 0; i < listaPublicados.Count; i++)

 

{

 

if (listaPublicados[i].Id == idSelected)

 

{

 

switch (listaPublicados[i].Estado)

 

{

 

case 0:

 

listaPublicados[i].Estado = 2;

 

break;

 

 

case 1:

 

listaPublicados[i].Estado = 3;

 

break;

 

 

case 2:

 

listaPublicados[i].Estado = 0;

 

break;

 

 

case 3:

 

listaPublicados[i].Estado = 1;

 

break;

 

}

}

}

 

PagedCollectionView view = new PagedCollectionView(this.ItemsSource);

 

view.PageSize = 10;

 

this.dgPublicados.ItemsSource = view;

 

 

this.dgPublicados.UpdateLayout();

 

}

}

[Pavel Pavlov]

Hi Paloma,

I have tried to reproduce the problem here but with no success. As a side note I  would recommend to replace the

this.dgPublicados.UpdateLayout();

with this.dgPublicados.Rebind(); 

If  this does not help , please send me the entire project and I will try to debug it .

Regards,
Pavel Pavlov
the Telerik team

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