Excel JavaScript API (ExcelApi1.1) fails when creating a table/range with a large data set (400k-600k rows) returning the error “GeneralException”

问题

When using the Excel JavaScript API (ExcelApi1.1) to create a table and add data via a web Excel add-in, using an Excel document in desktop office, the table failed to be created when attempting to add 400k-600k or more rows, returning the error “GeneralException: An internal error has occurred.”

Note: When using an Excel document in online office the failure occurs at 20k – 40k or more rows, returning the error “GeneralException: An internal error has occurred.”

Initially the implementation of the web Excel Add-in was identical to that provided in the tutorial ‘Create an Excel task pane add-in’. But the performance of adding rows (all rows or one at a time) directly to the table was significantly worse. https://docs.microsoft.com/en-us/office/dev/add-ins/tutorials/excel-tutorial

Following Microsoft advice on ‘Performance optimization using the Excel JavaScript API’ the implementation was changed to create a range then add this range to a new table, before call context.sync(). https://github.com/OfficeDev/office-js-docs-pr/blob/master/docs/excel/performance.md

The core of the web Excel Add-in is as follows:

Excel.run(function(context) {

// Temporally suspend the auto calcatuion when you try to do large dataset read/wirte operation
if (Office.context.requirements.isSetSupported('ExcelApi', 1.6)) {
    // Only supported in 1.6 onwards
    context.application.suspendApiCalculationUntilNextSync();
}

const currentWorksheet = context.workbook.worksheets.getActiveWorksheet();

var rowCount = dataValueArray.length;
console.log('data.length=' + rowCount);

var range = currentWorksheet.getRange("A2:I" + (rowCount + 1));
range.values = dataValueArray;

const expensesTable = currentWorksheet.tables.add("A1:I" + (rowCount + 1), true /*hasHeaders*/);
expensesTable.name = "ExpensesTable";

expensesTable.getHeaderRowRange().values = [["Timestamp", "NanoSeconds", "OPCServer", "Source", "Severity", "Message", "Condition", "Category", "SequenceNo"]];

var ret = context.sync().then(function() {
    console.log('staticDataAlarms: context.sync() complete:(s)', + (performance.now() - start) / 1000);
});

return ret;
})

A large number of rows cannot be added, our expectations is for Excel to render tables containing at least 1 million rows, similar to using the ‘Get Data’ function.

Tests were performed on the following environments:

Excel - Office 2019 32 bit, Version 1903 (Build 11425.20244)

Excel – Office 2016 32 bit, Version 16.0.4738.1000

Excel – Office online, Build 16.0.11615.35054

Also see related Issue: Performance of Excel JavaScript API (ExcelApi1.1) when creating a table/range with a large data set (+50k rows) is slow (5 seconds per 50k rows)

来源：https://stackoverflow.com/questions/55933236/excel-javascript-api-excelapi1-1-fails-when-creating-a-table-range-with-a-larg

标签

office-js