Problem filtering a complex column

1 posts, 0 answers
  1. James
    James avatar
    5 posts
    Member since:
    Oct 2011

    Posted 27 Mar 2012 Link to this post

    Each row of my RadGridView is a CallFactorSet, and a call factor set has four boolean properties on it.
    One column of my RadGridView is "Applied To" and it uses these four boolean properties to build a string that is shown in the column.

    <telerik:GridViewDataColumn
        Header="Applied To"
        DataMemberBinding="{Binding Path=_CallFactorSet, Converter={StaticResource callFactorSetAppliedToPlansConverter}}"
        IsReadOnly="True" />

    In order to make this column filterable, I've added IComparable<CallFactorSet> to the implementation of CallFactorSet. This uses the String.CompareTo() method to compare the strings that are generated by each call factor set.

    Having implemented that interface, the column is now filterable in the UI. However, the options for the filtering haven't been "grouped".
    Picture explaining what I mean: pic

    If I check a single string in that list, it works as expected and does show me all rows in the grid that match that string. Then, if I close and reopen the filter dialog I can see all entries of that string checked.

    How can I fix it so each string only appears in the filter list once.
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