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Thread: rendering is slow when grid column exceeds 20 columns

  1. #1
    Sencha User
    Join Date
    Jul 2016
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    Default rendering is slow when grid column exceeds 20 columns

    Grid rendering works fine up to 20 columns. But if columns count is more than 20 then the rendering will be slow and until it got rendered completely application will be frozen and user can't able to do any functionality .

    Please can anybody check and let me know ASAP

  2. #2
    Sencha Premium User mitchellsimoens's Avatar
    Join Date
    Mar 2007
    Gainesville, FL
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    This is a known limitation of the grid and there is nothing like horizontal virtual scrolling like there is for vertical virtual scrolling so you will always be rendering all columns. Ways I've worked around it is to join columns and make a row multiline or only show some columns by default and with state let users show/hide/reorder columns to their liking.
    Mitchell Simoens @LikelyMitch
    Modus Create, Senior Frontend Engineer
    Need any sort of Ext JS help? Modus Create is here to help!

    Check out my GitHub:

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