Blazor Excel Library Overview

The Infragistics Blazor Excel Library allows you to work with spreadsheet data using familiar Microsoft® Excel® spreadsheet objects like Workbook, Worksheet, Cell, Formula and many more. The Infragistics Blazor Excel Library makes it easy for you to represent the data of your application in an Excel spreadsheet as well as transfer data from Excel into your application.

Blazor Excel Library Example

Requirements

In order to use the Blazor excel library, you need to add the following using statement:

@using Infragistics.Documents.Excel

If you are using a Web Assembly (WASM) Blazor project, there are a couple of extra steps:

• Add a reference to the following script in the wwwroot/index.html file:

<script src="_content/IgniteUI.Blazor.Documents.Excel/excel.js"></script>

• Set the static Workbook.InProcessRuntime to the current runtime. This can be done by using the following code:

@using Microsoft.JSInterop

@code {

    [Inject]
    public IJSRuntime Runtime { get; set; }

    protected override void OnInitialized()
    {
        base.OnInitialized();
        Workbook.InProcessRuntime = (IJSInProcessRuntime)this.Runtime;
    }
}

Supported Versions of Microsoft Excel

The following is a list of the supported versions of Excel.**

• Microsoft Excel 97

• Microsoft Excel 2000

• Microsoft Excel 2002

• Microsoft Excel 2003

• Microsoft Excel 2007

• Microsoft Excel 2010

• Microsoft Excel 2013

• Microsoft Excel 2016

Load and Save Workbooks

Now that the Excel Library module is imported, next step is to load a workbook.

In order to load and save Workbook objects, you can utilize the save method of the actual Workbook object, as well as its static Load method.

protected override void OnInitialized()
{
    var memoryStream = new System.IO.MemoryStream();
    workbook.Save(memoryStream);

    memoryStream.Position = 0;
    var bytes = memoryStream.ToArray();
    this.SaveFile(bytes, "fileName.xlsx", string.Empty);
}

private void SaveFile(byte[] bytes, string fileName, string mime)
{
    if (this.Runtime is WebAssemblyJSRuntime wasmRuntime)
      wasmRuntime.InvokeUnmarshalled<string, string, byte[], bool>("BlazorDownloadFileFast", fileName, mime, bytes);
    else if (this.Runtime is IJSInProcessRuntime inProc)
      inProc.InvokeVoid("BlazorDownloadFile", fileName, mime, bytes);
}

API References

• Load
• WorkbookInProcessRuntime
• Worksheet
• Workbook