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

Opens a document from an array of bytes.

Namespace : DevExpress.AspNetCore.Spreadsheet

Assembly : DevExpress.AspNetCore.Spreadsheet.v25.2.dll

NuGet Package : DevExpress.AspNetCore.Spreadsheet

Declaration

csharp

public SpreadsheetBuilder Open(
    string documentId,
    Func<byte[]> contentAccessorByBytes
)

Parameters

Name	Type	Description
documentId	String

A document identifier.

| | contentAccessorByBytes | Func<Byte[]> |

A method delegate that obtains the byte array.

Returns

Type	Description
SpreadsheetBuilder

An object that can be used to further configure the Spreadsheet.

Remarks

This method determines the document’s format automatically. Pass the document format to the Open(String, DocumentFormat, Func<Byte[]>) method overload to disable automatic detection and improve performance when you open a document. Refer to the following section for more information: Open a Document from a Byte Array.

The example below demonstrates how to open a document from a byte array:

Index.cshtml

razor

@model SpreadsheetDocumentContent

@(Html.DevExpress()
    .Spreadsheet("spreadsheet")
    .Open(@Model.DocumentId, @Model.ContentAccessorByBytes)
)

SpreadsheetControler.cs

csharp

public IActionResult Index() {
    byte[] byteArrayAccessor() => System.IO.File.ReadAllBytes("your-file-path");
    var model = new SpreadsheetDocumentContent("DocumentId1", byteArrayAccessor);
    return View(model);
}

SpreadsheetDocumentContent.cs

csharp

public class SpreadsheetDocumentContent {
    public string DocumentId { get; set; }
    public Func<byte[]> ContentAccessorByBytes { get; set; }
    public DocumentFormat DocumentFormat { get; set; } = DocumentFormat.Xlsx;
    public SpreadsheetDocumentContent(string documentId, Func<byte[]> contentAccessorByBytes) {
        DocumentId = documentId;
        ContentAccessorByBytes = contentAccessorByBytes;
    }
}