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      Examples: Sorting and Grouping Data
      How to: Implement Custom Grouping
      How to: Implement Custom Sorting
      How to: Simultaneously Sort and Group Data Against Specific Columns
      How to: Sort Data Against Two or More Columns
      How to: Sort Group Rows by Summary Values
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How to: Implement Custom Grouping

Assume that a Grid View's "Order Sum" column contains numbers. When grouping is applied to this column, the rows which have values between 0 and 99 in this column should be combined into a single group, the rows whose values fall between 100 and 199 should be combined into another group, etc. To provide custom grouping logic the column's GridColumn.SortMode property should be set to ColumnSortMode.Custom and the GridView.CustomColumnGroup event should be handled to implement the algorithm. In the following example the event's Result parameter is set to 0 if the two rows being compared should be placed within the same group.

The ColumnView.CustomColumnDisplayText event is handled to replace the default text displayed within group rows.

The result of data being custom grouped is shown below:

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