IsVisible coverter on a GridViewdataColumn

[Nick Wood]

Hi All

I have tried all manor of solutions to this problem.

Basically I have an attributes table which contains a type. this type is bound to a GridViewComboBoxColumn. when the selection in this column is changed, it needs to set the isvisible value of other columns in the same grid row.

So, in the usual way, I have created a converter such as this:

public class AttributeIntTypeToEnabledConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value != null)
            {
                int count = (int)value;
                if (count == 1)
                    return true;
                else
                    return false;
            }
            else
            {
                return false;
            }
        }
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return null;
        }
    }

in the xaml, the converter is called like this:

<telerikGridView:GridViewDataColumn x:Name="gridAttributes_attrValInt" Header="Value"
                                                                        DataMemberBinding="{Binding attribute_id}"
                                                                        IsVisible="{Binding attribute_id, Converter={StaticResource AttributeIntTypeToEnabledConverter}}">

The value for the cell is updated when the attribute_id is changed, but the visibility converter is never called.


the second option that I have tried is to use the GridViewdataColumn element, such as this:

IsVisible="{Binding ElementName=gridAttributes_AttributeType1, Path=SelectedValue, Converter={StaticResource AttributeIntTypeToEnabledConverter}}"

gridAttributes_attributeType1 is the name of the GridViewComboBoxColumn.

This also does not call the converter as I suspect that the path SelectedValue does not exist in a GridViewComboBoxColumn.

The solution does call the converter however, if I bind it to a combo outside of the gridview..

Is there any solution to this problem.

Regards

Nick

[Maya]

Hi Nick Wood,

While preparing a sample project for you, a conflict about the requirements has appeared and it is concerning the way of setting columns to be collapsed. So, please give us more details about your scenario - which columns are you trying to hide? Do you want when to hide the appropriate row when selecting a value from the ComboBox? Do you need them to show again on another event? 

Best wishes,
Maya
the Telerik team

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