Grid cell merge in unbound using CellContentRenderFragment

Posted by: ehh on 15 December 2021, 9:08 pm EST

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    Posted 15 December 2021, 9:08 pm EST - Updated 29 September 2022, 12:49 am EST


    I have a problem getting my cells to merge.

    Im using the unbound grid and custom renderfragment in my cell fractory to display the cells. I need the renderfragment in my own solution to add some buttons, to specific cells if needed.

    The grid without cell merging.

    When I enable cell merging, all the cells get merged as shown below.

    I think it could have something to do with the use of a class when setting the values of the grid, since the grid then sees the name of the class as the value of the cell. This can be seen if I disable the cellfactory as shown below,

    I have attached the example code use to demostrate my issue.

    Best Regards,


  • Posted 16 December 2021, 2:59 pm EST

    Hi Emil,

    Yes, your assumption is correct. The cells are merging because of the Cell Value that is object.

    For merging the cells based on their values, we need to handle the MergeManager and define the CustomMerge class same as we done for the CellFactory.

    Please refer to the following code snippet and the attached sample.

    <FlexGrid @ref="grid"
              MergeManager ="@mergeManager">
    GridMergeManager mergeManager = new CustomGridMerging();
    public class CustomGridMerging : GridMergeManager
            public override GridCellRange GetMergedRange(GridCellType cellType,GridCellRange range)
                FlexGrid Grid = this.Grid;
                if(this.AllowMerging == GridAllowMerging.Cells && cellType== GridCellType.Cell)
                    //code here for merging 
                    return range;
                return base.GetMergedRange(cellType, range);


    Manish Gupta

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