open Method

Imports an excel file.

Syntax

Javascript (Usage)
Javascript (Specification)

var instance = new GC.Spread.Excel.IO();
var value; // Type: any
value = instance.open(file, successCallBack, errorCallBack, options);

function open( 
   file : Blob,
   successCallBack : any,
   errorCallBack : any,
   options : Object
) : any;

Parameters

file: The excel file.
successCallBack: Call this function after successfully loading the file. function (json) { }.
errorCallBack: Call this function if an error occurs. The exception parameter object structure { errorCode: GC.Spread.Excel.IO.ErrorCode, errorMessage: string}.
options: The options for import excel.
* options.password {string} the excel file's password.

Example

This example opens and saves files. Use the browse button to find an Excel file to import. Then select Import to import a file.

Javascript

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Spread.Sheets V10 Client Side ExcelIO</title>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/2014-11-29/FileSaver.min.js"></script>
    <link href="./css/gc.spread.sheets.excel2013white.10.x.x.css" rel="stylesheet"/>
    <script src="./scripts/gc.spread.sheets.all.10.x.x.min.js" type="application/javascript"></script>
    <!--For client-side excel i/o-->
    <script src="./scripts/interop/gc.spread.excelio.10.x.x.min.js"></script>
</head>
<body>
<div>
    <input type="file" name="files[]" id="fileDemo" accept=".xlsx,.xls"/>
    <input type="button" id="loadExcel" value="Import" onclick="ImportFile()"/>    
    <input type="button" class="btn btn-default" id="saveExcel" value="Export" onclick="ExportFile()"/>
<input type="text" id="exportFileName" placeholder="Export file name" class="form-control" value="export.xlsx"/>
    <div id="ss" style="width:100%;height:500px"></div>
</div>
</div>
</body>
<script>
var workbook, excelIO;
window.onload = function () {
workbook = new GC.Spread.Sheets.Workbook(document.getElementById("ss"));
excelIO = new GC.Spread.Excel.IO();
    }

    function ImportFile() {
        var excelFile = document.getElementById("fileDemo").files[0];
        excelIO.open(excelFile, function (json) {
            var workbookObj = json;
           workbook.fromJSON(workbookObj);
        }, function (e) {
            console.log(e);
        });
    }

    function ExportFile() {
        var fileName = document.getElementById("exportFileName").value;
        if (fileName.substr(-5, 5) !== '.xlsx') {
            fileName += '.xlsx';
        }
        var json = JSON.stringify(workbook.toJSON());
        excelIO.save(json, function (blob) {
            saveAs(blob, fileName);
        }, function (e) {
            console.log(e);
        });
    }
</script>
</html>

Reference

IO type