Add Style Exception (Bugg ??) | Infragistics Forums

300

Add Style Exception (Bugg ??)

cordeau posted over 15 years ago

hi,

i try to add style to my CellValuePresenterStyle with C# .

But when this run :

                 foreach (var _cellTab in _tabCell)
                {

                    Style _styleCellPresent = _cellTab.Field.Settings.CellValuePresenterStyle;
                    Style _styleSurligne = (Style)dcPnl.FindResource("Surligne");

                    for (int i = 0; i < _styleSurligne.Setters.Count; i++)
                    {
                        _styleCellPresent.Setters.Add(_styleSurligne.Setters[i]);

                    }
                }

I have an exception :

InvalidOperationEception

"PresentationFramework"

After a 'SetterBaseCollection is in use (sealed), it can not be changed.

I have the Add methode to the Setters why i don't add style ?

what is the probleme and how to circumvent the problem ?

thanks,

Nathalie

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6867

[Infragistics] Josh Smith posted over 15 years ago

This exception has nothing to do with Infragistics controls. Once WPF Styles are in use, you cannot modify them. If you want to programmatically create Styles, you should create them from scratch, and not try to modify existing Style objects.
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300

cordeau posted over 15 years ago in reply to [Infragistics] Josh Smith

Thanks josh

but how change the background color of a cell programmatically ?

why the AssociatedCellValuePresenter is not accessible , it will be more simple for change the back color, border and other .. ?

thank ,

Nathalie
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Verified Answer
[Infragistics] Josh Smith posted over 15 years ago in reply to cordeau

You can get the CellValuePresenter for a Cell like this:
CellValuePresenter cvp = CellValuePresenter.FromCell(someCell);
josh
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Kiran posted over 15 years ago in reply to [Infragistics] Josh Smith

The functianality i want to achieve is to change the font and color of first record.

But the reference of value is only valid in Loaded event of the Grid.

The following code works

void dpReturnGroup_Loaded(object sender, RoutedEventArgs e)

{
foreach (Record record in ((Infragistics.Windows.DataPresenter.DataPresenterBase)(e.OriginalSource)).Records)
{
    if (record.Index == 0)
    {
      CellValuePresenter value = CellValuePresenter.FromCell(((DataRecord)record).Cells[0]);       if (value != null)
       {

            BrushConverter objBrushConverter = new BrushConverter();
            value.Foreground = (Brush)objBrushConverter.ConvertFromString("#FFB9B9B9");
            FontStyleConverter objFontStyleConverter = new FontStyleConverter();
            value.FontStyle = (FontStyle)objFontStyleConverter.ConvertFromString("Italic");       }
}

the following code doesnt work. The value is null all the time.
void ModifyRecordStyle()
{
CellValuePresenter value = CellValuePresenter.FromCell(((DataRecord)this.dpReturnGroup.ViewableRecords[0]).Cells[0]);if (value != null)
{

BrushConverter objBrushConverter = new BrushConverter();
value.Foreground = (Brush)objBrushConverter.ConvertFromString("#FFB9B9B9");
FontStyleConverter objFontStyleConverter = new FontStyleConverter();
value.FontStyle = (FontStyle)objFontStyleConverter.ConvertFromString("Italic");
}
dpReturnGroup.ActiveCell = ((DataRecord)this.dpReturnGroup.ViewableRecords[0]).Cells[1];
value = CellValuePresenter.FromCell(((DataRecord)this.dpReturnGroup.ViewableRecords[0]).Cells[1]);
if (value != null)
{
BrushConverter objBrushConverter = new BrushConverter();
value.Foreground = (Brush)objBrushConverter.ConvertFromString("#FFB9B9B9");
FontStyleConverter objFontStyleConverter = new FontStyleConverter();value.FontStyle = (FontStyle)objFontStyleConverter.ConvertFromString("Italic");
}

}
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300

cordeau posted over 15 years ago in reply to Kiran

Hi,

For me whith this code , it work wery well :

gridContrat.ActiveCell = ((DataRecord)this.gridContrat.ViewableRecords[0]).Cells[1];
CellValuePresenter value = CellValuePresenter.FromCell(((DataRecord)this.gridContrat.ViewableRecords[0]).Cells[1]);

if (value != null)
{

value.Foreground =Brushes.Red;
value.FontStyle = FontStyles.Italic;
}
gridContrat.ActiveCell = ((DataRecord)this.gridContrat.ViewableRecords[0]).Cells[2];
value = CellValuePresenter.FromCell(((DataRecord)this.gridContrat.ViewableRecords[0]).Cells[2]);
if (value != null)
{

value.Foreground = Brushes.Red;
value.FontStyle = FontStyles.Italic;
}

but i have declare all the Field in XAML like this :

<igDP:Field Name="Id" Visibility="Collapsed" />

<igDP:Field Name="Nom" Label="Contrat">

<igDP:Field.Settings>

<igDP:FieldSettings CellWidth="60" CellMaxWidth="80" CellMinWidth="60" >

</igDP:FieldSettings>

</igDP:Field.Settings>

</igDP:Field>

<igDP:Field Name="Qtt1" Label="6-7h" >

<igDP:Field.Settings>

<igDP:FieldSettings CellWidth="60" CellMinWidth ="60" CellMaxWidth="60" >

<igDP:FieldSettings.CellValuePresenterStyle>

<Style TargetType="{x:Type igDP:CellValuePresenter}" >

<Style.Triggers>

<DataTrigger Binding="{Binding Path=Cells[2].Tag}" Value="comment">

<Setter Property="BorderBrush" Value="Red"/>

<Setter Property="BorderThickness" Value="1,1,1,1"></Setter>

</DataTrigger>

</Style.Triggers>

</Style>

</igDP:FieldSettings.CellValuePresenterStyle>

</igDP:FieldSettings>

</igDP:Field.Settings>

</igDP:Field>

<igDP:Field Name="HrQtt1" Visibility="Collapsed" />

<igDP:Field Name="CommentQtt1" Visibility="Collapsed"/>

have you declare the field ?

enjoy

Naathalie
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