SeriesBase.DataFilters Property
Gets a collection of data filter conditions which can be applied to the series’ data.
Namespace: DevExpress.XtraCharts
Assembly: DevExpress.XtraCharts.v18.2.dll
Declaration
[XtraChartsLocalizableCategory(XtraChartsCategory.Data)]
[NonTestableProperty]
[XtraSerializableProperty(XtraSerializationVisibility.Collection, true)]
public DataFilterCollection DataFilters { get; }Property Value
| Type | Description |
|---|---|
| DataFilterCollection | A DataFilterCollection object that represents the collection of filter conditions. |
Remarks
The DataFilters property provides access to the collection which contains the filter conditions applied to the data of the current series. Each filter condition is represented by an instance of the DataFilter object within this collection.
Example
The following example demonstrates how to create DataFilter objects, and apply their conditions to a series at runtime. For more information, refer to Filtering Data.
For this example to work correctly, a chart should contain at least one series, which is bound to the “Categories” data table in the Northwind Traders database (nwind.mdb file shipped with the XtraCharts demo). Please refer to the following tutorial to see how to bind a series to data: How to: Bind Individual Chart Series to Data (Runtime Sample).
The code below creates and applies the following filter to series data: “CategoryID = 1 or CategoryID = 4 or CategoryID = 7”
using DevExpress.XtraCharts;
// ...
// Create new data filters and specify conditions for them.
DataFilter dataFilter1 = new DataFilter("CategoryID", "System.Int32", DataFilterCondition.Equal, 1);
DataFilter dataFilter2 = new DataFilter("CategoryID", "System.Int32", DataFilterCondition.Equal, 4);
DataFilter dataFilter3 = new DataFilter("CategoryID", "System.Int32", DataFilterCondition.Equal, 7);
// Obtain the first series of the chart.
Series series1 = chartControl1.Series[0];
// Set the logical operator used to combine individual data filter conditions for this series.
series1.DataFiltersConjunctionMode = ConjunctionTypes.Or;
// Remove all other filters.
series1.DataFilters.Clear();
// Add new filters to apply to the series data.
series1.DataFilters.AddRange(new DataFilter[] {dataFilter1, dataFilter2, dataFilter3});