- FarPoint.CalcEngine Assembly
- FarPoint.Excel Assembly
-
FarPoint.Web.Chart Assembly
-
FarPoint.Web.Chart
-
Classes
- AreaSeries
- AreaSeriesCollection
- Axis
- AxisInfo
- BarSeries
- BarSeriesCollection
- BeforeRenderMapAreasEventArgs
- Bevel
- BevelCollection
- BinOption
- BoxWhiskerSeries
- BoxWhiskerSeriesCollection
- BuiltinMarker
- CandlestickSeries
- Chart2DRenderer
- Chart3DRenderer
- ChartImageHttpHandler
- ChartMapArea
- ChartModel
- CircleBevel
- ClusteredBarSeries
- ClusteredBoxWhiskerSeries
- DetachmentCollection
- DirectionalLight
- DoubleCollection
- DoubleCollectionCollection
- DoubleCollectionCollectionCodeDomSerializer
- DoubleCollectionCustomTypeDescriptor
- DoubleCollectionPropertyDescriptor
- DoubleCollectionTypeDescriptionProvider
- EnhanceStringCollection
- FileImageRender
- Fill
- FillCollection
- FpCategoryAttribute
- FpChart
- FpChartBuilder
- FunnelSeries
- GradientFill
- GripHitTest
- HighLowAreaSeries
- HighLowBarSeries
- HighLowCloseSeries
- HistogramBar
- HistogramLine
- HistogramSeries
- HitTest
- HttpHandlerImageRender
- ImageFill
- ImageRender
- IndexAxis
- LabelArea
- LabelAreaCollection
- LabelAreaHitTest
- LegendArea
- LegendAreaCollection
- LegendAreaHitTest
- Light
- LightCollection
- Line
- LineCollection
- LineSeries
- LineSeriesCollection
- MapArea
- MapAreaClickEventArgs
- MapAreaCollection
- MapAreaInfo
- Marker
- MarkerCollection
- NoBevel
- NoFill
- NoLine
- NoMarker
- NullItemBevelCollectionCodeDomSerializer
- NullItemFillCollectionCodeDomSerializer
- NullItemLineCollectionCodeDomSerializer
- NullItemMarkerCollectionCodeDomSerializer
- NullItemStringCollectionCodeDomSerializer
- ObliqueProjection
- OpenHighLowCloseSeries
- OrthogonalProjection
- ParetoSeries
- PerspectiveProjection
- PiePlotArea
- PieSeries
- PlotArea
- PlotAreaCollection
- PlotAreaHitTest
- PointSeries
- PointSeriesCollection
- PolarAngleAxis
- PolarAreaSeries
- PolarLineSeries
- PolarPlotArea
- PolarPointSeries
- PolarRadiusAxis
- PolarRadiusAxisCollection
- PolarSeries
- PositionalLight
- Projection
- RadarAreaSeries
- RadarIndexAxis
- RadarLineSeries
- RadarPlotArea
- RadarPointSeries
- RadarSeries
- RadarValueAxis
- RadarValueAxisCollection
- Series
- SeriesCollection
- SeriesElementHitTest
- SeriesHitTest
- SeriesInfo
- SolidFill
- SolidLine
- StackedAreaSeries
- StackedBarSeries
- StackedLineSeries
- StackedPointSeries
- StringCollection
- StringCollectionCollection
- StringCollectionCollectionEditor
- StringCollectionItem
- StringCollectionItemEditor
- Stripe
- StripeCollection
- SunburstPlotArea
- SunburstSeries
- TreemapPlotArea
- TreemapSeries
- ValueAxis
- ValueAxisCollection
- Wall
- WaterfallSeries
- XYBubbleSeries
- XYLineSeries
- XYPlotArea
- XYPointSeries
- XYSeries
- XYZLineSeries
- XYZPlotArea
- XYZPointSeries
- XYZSeries
- XYZSurfaceSeries
- YPlotArea
- YSeries
- Structs
- Enums
- Interfaces
- Delegates
-
Classes
-
FarPoint.Web.Chart
- FarPoint.Web.Spread Assembly
- FarPoint.Web.Spread.Extender Assembly
FarPoint.Web.Chart.HttpHandlerImageRender
HttpHandlerImageRender Class
The HttpHandlerImageRender renders the chart image to memory using the ChartImageHttpHandler and returns the image Url.
Namespace: FarPoint.Web.Chart
Assembly: FarPoint.Web.Chart.dll
Syntax
[TypeConverter(typeof(ImageRenderConverter))]
public class HttpHandlerImageRender : ImageRender, ISparklineSupportHandler, IParallelSupport<TypeConverter(GetType(ImageRenderConverter))>
Public Class HttpHandlerImageRender
Inherits ImageRender
Implements ISparklineSupportHandler, IParallelSupportRemarks
HttpHandlerImageRender is recommended when charts are simple (easy to generate) or when you expect requests for a large number of different charts.
HttpHandlerImageRender supplies two ways to save an image on the server, one is saving in HttpContext.Session and another is saving in HttpContext.Cache. An application developer can set the storage means by the ImageTransferStorage property and determine whether to hold the image data or clear it immediately after rendering by using the KeepTransferStorage property.
Constructors
| Name | Description |
|---|---|
| HttpHandlerImageRender() | Initializes a new instance of the HttpHandlerImageRender class. |
| HttpHandlerImageRender(ImageTransferStorage, string, bool) | Initializes a new instance of the HttpHandlerImageRender class. |
Properties
| Name | Description |
|---|---|
| ImageTransferStorage | Gets or sets the storage mode of saving chart image in memory. |
| KeepTransferStorage | Gets or sets the value whether to keep the chart instance in session or cache according to the value of ImageTransferStorage property. |
| TransferId | Gets or sets a key to access session or cache according to the value of ImageTransferStorage property. |
Methods
| Name | Description |
|---|---|
| GetImageUrl(FpChart) | Gets the image Url. |
| TransferImage(FpChart) | Renders chart image and returns the image Url. |
| TransferImage(Image, ImageType) | Tranfer an image object to storage cacche and return its path |