SpreadsheetExtension.Open(String, 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
public SpreadsheetExtension Open(
string documentId,
Func<byte[]> contentAccessorByBytes
)
Parameters
Name | Type | Description |
---|---|---|
documentId | String | A string value that specifies the Spreadsheet name. |
contentAccessorByBytes | Func<Byte[]> | A method delegate to obtain a byte array from which to open the document. |
Returns
Type | Description |
---|---|
SpreadsheetExtension | A SpreadsheetExtension object that represents the result of the operation. |
Remarks
Note
This overload of the SpreadsheetExtension.Open method determines a document’s format automatically, but this process reduces the method’s performance. You can accelerate the method’s performance by specifying a document’s format manually using the overload with the DocumentFormat parameter.
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).
If the method causes the DevExpress.XtraSpreadsheet.SpreadsheetUnsupportedFormatException exception, call the Open(String, String, DocumentFormat, Func<Byte[]>) method instead and specify the document format explicitly.