[Solved] How manually update a cell text?

[Wyller]

Hi,

I'm using a RadGridView binded to an ObservableCollection<x> with 4 properties.
I manually created 4 columns on the RadGridView, 2 are of type GridViewColumn and the other 2 are GridViewDataColumn binded datasource properties.

How can I manually change the values for the 2 GridViewColumn without updating/redrawing the entire RadGridView?

Thanks!

[Yavor Georgiev]

Hello Wyller,

 Does your data class implement INotifyPropertyChanged? The RadGridView should update the relevant cell automatically if your data item is INotifyPropertyChanged.

Regards,
Yavor Georgiev
the Telerik team

[Wyller]

Hi, it's still not working, here's how I'm doing this.

Here's my RadGridView:

 

<telerik:RadGridView telerik:StyleManager.Theme="Windows7" HorizontalAlignment="Left" Margin="12,368,0,0" Name="gvLegenda" VerticalAlignment="Top" Width="975" Height="201" AutoGenerateColumns="False" CanUserReorderColumns="False" CanUserResizeColumns="False" CanUserSortColumns="False" CanUserFreezeColumns="False" CanUserDeleteRows="False" CanUserInsertRows="False" CanUserSelect="False" IsFilteringAllowed="False" IsEnabled="False" ShowGroupPanel="False" DataLoadMode="Synchronous" EnableColumnVirtualization="True" EnableRowVirtualization="True" SelectionMode="Single" IsReadOnly="False" RowIndicatorVisibility="Collapsed">
    <telerik:RadGridView.Columns>
        <telerik:GridViewColumn MaxWidth="40" MinWidth="40" Width="40" IsGroupable="False" />
        <telerik:GridViewDataColumn Header="Coluna" MinWidth="250" IsGroupable="False" DataMemberBinding="{Binding ColumnName}" />
        <telerik:GridViewDataColumn Header="Função" MinWidth="300" IsGroupable="False" DataMemberBinding="{Binding Function}"/>
        <telerik:GridViewDataColumn Header="Valor" MinWidth="80" IsGroupable="False" DataMemberBinding="{Binding CurrentCursorValue}" />
    </telerik:RadGridView.Columns>
</telerik:RadGridView>

Here my class:

public class POPLegend : INotifyPropertyChanged

 {

     public GraphData.Color SerieColor { get; set; }

     public string ColumnName { get; set; }

     public string Function { get; set; }

     public double CurrentCursorValue { get; set; }



     public event PropertyChangedEventHandler PropertyChanged;

 }

I'm binding like this:

var lstLegend = new ObservableCollection<POPLegend>();

           for (int x = 0; x < e.Result.Count - 1; x++)
           {
               lstLegend.Add(new POPLegend { SerieColor = e.Result[x].SerieColork__BackingField, ColumnName = e.Result[x].Namek__BackingField });
               radChart1.SeriesMappings.Add(seriesMapping);
           }
           gvLegenda.ItemsSource = lstLegend;

Thanks!

[Wyller]

I was using the INotifyPropertyChanged in a wrong way. Bellow is the correct way.

public double CurrentCursorValue

{

get { return _CurrentCursorValue; }

set

{

if ((object.ReferenceEquals(_CurrentCursorValue, value) != true))

{

_CurrentCursorValue = value;

RaisePropertyChanged("CurrentCursorValue");

}

}

} private double _CurrentCursorValue;

 public event PropertyChangedEventHandler PropertyChanged;

        protected void RaisePropertyChanged(string propertyName)
        {
            PropertyChangedEventHandler propertyChanged = this.PropertyChanged;
            if ((propertyChanged != null))
            {
                propertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
            }
        }