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Interface IGridTableCellStyleCache - WindowsForms API Reference | Syncfusion

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    Interface IGridTableCellStyleCache

    Implement this interface for elements and keep a cache with style information for individual cells if you want reduce the number of QueryCellStyleInfo calls being raised for cells of this element.

    Namespace: Syncfusion.Windows.Forms.Grid.Grouping
    Assembly: Syncfusion.Grid.Grouping.Windows.dll
    Syntax
    public interface IGridTableCellStyleCache
    Remarks

    Here is example code to implement this interface. It is important to keep a version value and compare the version with GridEngine.Version. This ensures that when changes are made to the engine or table that the cache is reset:

        public class GridRecordRowWithCache : GridRecordRow, IGridTableCellAppearanceSource, IGridTableCellStyleCache
        {
            public GridRecordRowWithCache(RecordRowsPart parent)
                : base(parent)
            {
            }
    

    protected override void Dispose(bool disposing) { styles = null; base.Dispose (disposing); }

    #region IGridTableCellStyleCache Members ArrayList styles; int version;

    public ArrayList Styles { get { if (styles == null || this.version != Engine.Version) { this.version = Engine.Version; styles = new ArrayList(); } return styles; } }

    public GridTableCellStyleInfo GetStyleAtColumn(int colIndex) { if (Styles != null && styles.Count > colIndex) { return styles[colIndex] as GridTableCellStyleInfo; }

    return null; }

    public void SetStyleAtColumn(int colIndex, GridTableCellStyleInfo style) { if (version != Engine.Version) ResetStyles();

    if (Styles.Count <= colIndex) Styles.AddRange(new object[colIndex-Styles.Count+1]);

    styles[colIndex] = style; } public void ResetStyles() { styles = null; }

    #endregion }

    Methods

    GetStyleAtColumn(Int32)

    Returns the style for the specified column index.

    Declaration
    GridTableCellStyleInfo GetStyleAtColumn(int colIndex)
    Parameters
    Type Name Description
    System.Int32 colIndex

    The column index.

    Returns
    Type Description
    GridTableCellStyleInfo

    The style object.

    ResetStyles()

    Empties the cache.

    Declaration
    void ResetStyles()

    SetStyleAtColumn(Int32, GridTableCellStyleInfo)

    Saves the style at the specified column index.

    Declaration
    void SetStyleAtColumn(int colIndex, GridTableCellStyleInfo style)
    Parameters
    Type Name Description
    System.Int32 colIndex

    The column index.

    GridTableCellStyleInfo style

    The style object.

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