SpreadsheetExtension.Open(String, DocumentFormat, Func<Byte[]>) Method

Opens a document specified by an array of bytes.

Namespace: DevExpress.Web.Mvc

Assembly: DevExpress.Web.Mvc5.v24.1.dll

NuGet Package: DevExpress.Web.Mvc5

Declaration

C#

public SpreadsheetExtension Open(
    string uniqueDocumentID,
    DocumentFormat format,
    Func<byte[]> contentAccessorByBytes
)

VB.NET

Public Function Open(
    uniqueDocumentID As String,
    format As DocumentFormat,
    contentAccessorByBytes As Func(Of Byte())
) As SpreadsheetExtension

Parameters

Name	Type	Description
uniqueDocumentID	String	A string value that uniquely identifies the document to open (the document’s DocumentId).
format	DocumentFormat	A DocumentFormat object specifying the document format.
contentAccessorByBytes	Func<Byte[]>	A method delegate to obtain a byte array from which to open the document.

Returns

Type	Description
SpreadsheetExtension	A SpreadsheetExtension object representing the Spreadsheet extension.

Remarks

This method tries to find the specified document in a list of already opened documents maintained by the DocumentManager. If the document is found, its instance is opened in Spreadsheet. If the specified document has not been found in the opened documents, a delegate method specified by the contentAccessorByBytes parameter is called. It allows you to manually obtain a byte array from which to open a document (for instance, to load a document from a database).

View Example: How to save/load documents to/from a database