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Interface IGroupByColumnCategorizer - WindowsForms API Reference | Syncfusion

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    Interface IGroupByColumnCategorizer

    Implement this interface if you want to implement a custom categorizer.

    Namespace: Syncfusion.Grouping
    Assembly: Syncfusion.Grouping.Base.dll
    Syntax
    public interface IGroupByColumnCategorizer

    Methods

    CompareCategoryKey(SortColumnDescriptor, Boolean, Object, Record)

    Determines if this record belongs to the same category as the previous record.

    Declaration
    int CompareCategoryKey(SortColumnDescriptor column, bool isForeignKey, object category, Record record)
    Parameters
    Type Name Description
    SortColumnDescriptor column

    The column descriptor.

    System.Boolean isForeignKey

    True if this is a foreign key field.

    System.Object category

    The category of the previous record.

    Record record

    The record to be evaluated.

    Returns
    Type Description
    System.Int32

    True if this record belongs to the same category; False otherwise.

    GetGroupByCategoryKey(SortColumnDescriptor, Boolean, Record)

    Return a key for the specified column and record.

    Declaration
    object GetGroupByCategoryKey(SortColumnDescriptor column, bool isForeignKey, Record record)
    Parameters
    Type Name Description
    SortColumnDescriptor column

    The column descriptor.

    System.Boolean isForeignKey

    True if this is a foreign key field.

    Record record

    The record to be evaluated.

    Returns
    Type Description
    System.Object

    A key identifying the category this record belongs to.

    Remarks

    When categorizing records, all records are first sorted and then looped through in the order they were sorted. Only neighboring records in that sort order can have the same category key.

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