C1 combo - how to filter list

Posted by: luis_carlosh on 6 March 2023, 9:45 am EST

  • Posted 6 March 2023, 9:45 am EST - Updated 6 March 2023, 10:51 am EST

    I have a c1Combo box with data bounded to a table -tblproviders- which normally shows all the records. ID-PROVIDER-VERIFIEDBut I want to filter the list at will by the VERIFIED boolean field and that the C1 Combo shows only some of that data and not all. How is it done? How Filter and Unfilter the list?

  • Posted 6 March 2023, 3:57 pm EST


    To filter the rows of the C1Combo, you will need to filter its DataSource. Since you are using a DataTable, you can use the DataView.RowFilter property for the same. Please see the attached sample showing a simple implementation.

    attachment: ComboFiltering.zip

    Best Regards,


  • Posted 7 March 2023, 9:26 am EST

    I get result on filtering dt but get error when I try to hide ID column


    This is the design of control


  • Posted 8 March 2023, 6:11 pm EST


    We tried to reproduce the issue by hiding the “Id” column using code similar to your screenshot, but we could not reproduce the issue on our end. Please see the updated sample showing the behavior on our end.

    If you are doing something different, please provide a small sample or update the attached sample to replicate the issue, so we can investigate further and assist you better. Also, let us know the exact version of C1 controls you are using. We are using the latest 2022v3 (588) version on our end.

    Attachment: ComboFiltering_updated.zip

    Kind Regards,


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