More than two coded FieldFilters?

[David]

Hi guys,

is there a possibility to add more than 2 FieldFilters to a column?

I built up a DependencyProperty named Filters, when i add a filter in my viewmodel, the filter will be set to the column:

if (e.NewValue != null && e.NewValue.GetType() == typeof(FilterDescriptorCollection))
            {
                if (((FilterDescriptorCollection)e.NewValue).Count != 0)
                {
                    GridViewColumn gridColumn = this.Columns[((FilterDescriptor)((FilterDescriptorCollection)e.NewValue)[0]).Member];
                    IColumnFilterDescriptor columnFilter = gridColumn.ColumnFilterDescriptor;

                    columnFilter.FieldFilter.Clear();
                    columnFilter.SuspendNotifications();

                    foreach (FilterDescriptor filter in ((FilterDescriptorCollection)e.NewValue))
                    {
                        if (columnFilter.FieldFilter.Filter1.Value.ToString() != filter.Value.ToString() && columnFilter.FieldFilter.Filter2.Value.ToString() != filter.ToString())
                        {
                            if (columnFilter.FieldFilter.Filter1.Value.ToString() == "")
                            {
                                columnFilter.FieldFilter.Filter1.Operator = FilterOperator.Contains;
                                columnFilter.FieldFilter.Filter1.Value = filter.Value;
                            }
                            else
                            {
                                columnFilter.FieldFilter.Filter2.Operator = FilterOperator.Contains;
                                columnFilter.FieldFilter.Filter2.Value = filter.Value;
                            }
                        }

                    }
                    columnFilter.ResumeNotifications();
                }
            }

is there a possibility to add more than the two filters?

The problem is, that the filtering via viewmodel and rebind data is to slow. we noticed that the filtering via column is pretty much faster.
Now we got keys in a column like AEOKS... and we have to check wether the column is containing a key ("A")

Best wishes to you

David

[Vlad]

Hello David,

 You can create custom filtering control with unlimited numbers of filters using plain FilterDescriptor instead ColumnFilterDescriptor. Please check this demo for more info about custom filtering controls. 

Kind regards,
Vlad
the Telerik team

[David]

Hi Vlad,

thx for quick support reply.

Now I added the filterDescriptors to gridColumn.DataControl but then i got an error that "Source type must be an enumerable type."

Any idea?

[Dimitrina]

Hi David,

Do you try to filter a property that is not of type String, with the "Contains" operator? Genarally this would be a cause for the error.

Regards,
Didie
the Telerik team