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Get chart image from image transfer storage.
protected virtual byte[] GetImage(HttpContext context, string transferId, ImageTransferStorage imageTransferStorage, bool keepTransferStorage)
Protected Overridable Function GetImage(context As HttpContext, transferId As String, imageTransferStorage As ImageTransferStorage, keepTransferStorage As Boolean) As Byte()
Type | Name | Description |
---|---|---|
HttpContext | context | An HttpContext object that provides references to the intrinsic server objects (for example, Request, Response, Session, and Server) used to service HTTP requests. |
string | transferId | An unique Id to identify an chart image |
ImageTransferStorage | imageTransferStorage | A flag of where chart image is stored, Cache or Session. |
bool | keepTransferStorage | Whether to remove the image from the transfer storage |
Type | Description |
---|---|
byte[] | Chart image data in a binary array. |