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Robert
155
Grid Virtualization
posted

Hello.

I'm not using MVC. I would like to use grid virtualization. There is no sample which demonstrates this without using MVC.

I tried just setting the grid's virtualization property to true, but although the footer tells me I have thousands of rows, I cannot see them.

if I turn on AutoGenerateColumns, I see the rows, but the columns are squished to the left. What are the requirements for using virtualization: true?

Thanks.

Robert

  • 7570
    posted

    Hello RobertBrowerAxcelis,

    Please let us know if you have further questions.

  • 6279
    Suggested Answer
    posted

    Hi Robert,

     

    The virtualization-dedicated sample http://samples.infragistics.com/jquery/grid/virtualization has an HTML code view which provides an example of how virtualization can be set up for the igGrid widget:

    There's a particularly important sentence in that sample's description:
     "For vertical virtualization, it is important to note the average row height property – it’s default value is set to 25 pixels, but it might be necessary to manually adjust this property when working with a grid that has a small width, but the cell text is long so it spans multiple lines, and thus affects the rows’ heights. "

    So since the grid in the sample has a height of 400px it's perfectly fine with just virtualization: "true" (because 400 is a divisible without residue to 25 (which is the default value of the avgRowHeight option, which is pivotal to row virtualization ) ).

    Actually all of the intricacies of theigGrid's  virtualization are covered in this help topic:
    http://help.infragistics.com/Help/NetAdvantage/jQuery/2011.2/CLR4.0/html/igGrid_Virtualization.html

    Finally, if you wish to get a nice overview of which options may adjust virtualization, I suggest going though the igGrid's API help page:

     http://help.infragistics.com/jQuery/2011.2/ui.iggrid#options

     

    If you have any trouble with setting up virtualization for the grid, please let us know.

    Cheers,

    Borislav