The parent/child table’s column width can be set equally in proportion to the grid client’s width by dynamically setting the column’s width in the TableModel.QueryColWidth event handler. When it deals with a nested table, the QueryColWidth event of the entire nested table must be handled to set the respective nested table’s column width.
After applying the properties, the grid looks like the following screenshot.
Figure 1: Equal size allocated to all the columns in all the tables
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