DataJuggler.Excelerate 9.0.5

<img height=192 width=192 src=https://github.com/DataJuggler/Blazor.Excelerate/blob/main/wwwroot/Images/ExcelerateLogoSmallWhite.png>

Live Demo

Blazor.Excelerate https://excelerate.datajuggler.com Code Generate C# Classes From Excel Header Rows

Major Update - EPPPlus has been removed and NPOI has replaced it.

This was a pretty major switch, but EPPPlus had vulnerabilities in the last free version. I will be testing more in the near future, as I suspect there may be some issues switching from one based EPPPlus to 0 based in NPOI may not have been converted correctly.

Update 5.18.2024

New Video:

First Ever Opensource Saturday - Sunday Edition https://youtu.be/uxa1xR6xpzk

Updates

4.29.2025: I fixed a major bug caused by moving from EPPPlus to NPOI where the first column wasn't being loaded. Oops.

11.13.2024: EPPPlus was removed and NPOI has replaced it. This project was updated to .NET9. This version is still beiing tested. Use a version 8.x for now.

9.11.2024: I updated NuGet package DataJuggler.UltimateHelper. I became aware this package is listed as having vulnerabilities, which I believe stem from using EPPPlus version 4.5.3.3 which is the last free version of EPPPlus.

Edit 11.13.2024: NPOI has now replaced EPPPlus

12.29.2023: DataJuggler.Net8 was updated.

12.26.2023: Updated DataJuggler.NET8 and this project to handle Target Framework of .NET8

11.14.2023: This project has been updated to .NET8.

8.13.2023: DataJuggler.UltimateHelper was updated.

7.24.2023: New Video

The Best C# Excel Library In The Galaxy https://youtu.be/uWXiz52cqlg

I also created a NuGet package for a WinForms project that includes all the needed packages and has a progress bar wired up.

DataJuggler.ExcelerateWinApp

Install Instructions

To Install Via Nuget and DOT NET CLI, navigate to the folder you wish to create your project in

cd c:\Projects\ExcelerateWinApp dotnet new install DataJuggler.ExcelerateWinApp dotnet new DataJuggler.ExcelerateWinApp or

Clone ExcelerateWinApp from GitHub https://github.com/DataJuggler/ExcelerateWinApp

7.22.2023: I have completed ExcelHelper.SaveWorksheet method. This is a major milestone so I have updated the project to 7.4.0.

7.22.2023: I am in the process of redoing SaveRow for the code generated objects. Now each class has two properties created. Loading, and ChangedColumns, which is a comma delimited string of column indexes that have chagned. The next phase will be only saving columns that have changes.

7.21.2023: I added a property to the column object called HasChanges. In conjunection with this the class ExcelHelper has an optional parameter to SaveBatch, SaveBatchItem and SaveRow to only save columns with HasChanges = true. For now, you have to set this property on the column manually. I am investigating ways to auto set this if the value changes from the time you loaded the object until you save it.\

7.16.2023: DataJuggler.UltimateHelper, DataJuggler.Net7 was updated.

Update 4.4.2023

I just released a cool project that uses this package.

DataJuggler.SQLSnapshot Export a SQL Server database and all data rows with just a connection string and the path to save the Excel file. Nuget DataJuggler.SQLSnapshot https://github.com/DataJuggler/SQLSnapshot

And a demo project for the above project https://github.com/DataJuggler/DemoSQLSnapshot

Update 11.11.2022: I am working on the Grid, and added a properties to the column object

and some code to the ValidationComponent to allow SetFocusOnFirstRender.

Update 11.9.2022 - 11.10.2022:

I added some new properties and enumerations for editing data in the Grid in DataJuggler.Blazor.Components.

Update 11.8.2022:

I added some new properties to the row and Column object for use with the Grid for DataJuggler.Blazor.Components.

Update 10.31.2022:

LoadWorksheetInfo.ExcludedColumnIndexes was added. This is a collection of integers to not load. I may expand this to column names also as an option.

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Excelerate uses EPPPlus version 4.5.3.3 (last free version), and it makes it easy to load Workbooks or Worksheets.

A class named CodeGenerator was just created, and now by inheriting from the same CSharpClassWriter that code generates for DataTier.Net, I code generate classes based on your header row.

I have a couple of clients that I build programs that automate combining columns from multiple Worksheets to form reports.

Rather than continue to write custom loaders, I really only need custom Exporters in most cases.

Here is a short video: https://youtu.be/Sa-xroxPw_I

This short code snippet will load all the rows from a worksheet:

Snippet is from a Windows Form .Net 6 project, located in the Sample folder of this project. Very simple for now:

Load Worksheet Sample

using DataJuggler.UltimateHelper;
using DataJuggler.Excelerate;
using System;
using System.Windows.Forms;

// Set the text
string path = WorksheetControl.Text;

// Create a new instance of a 'LoadWorksheetInfo' object.
LoadWorksheetInfo loadWorksheetInfo = new LoadWorksheetInfo();

// Set the SheetName
oadWorksheetInfo.SheetName = SheetnameControl.SelectedObject.ToString();

// Only load the first 12 columns for this test
loadWorksheetInfo.ColumnsToLoad = 12;

// Set the LoadColumnOptions
loadWorksheetInfo.LoadColumnOptions = LoadColumnOptionsEnum.LoadFirstXColumns;

// other options
// loadWorksheetInfo.LoadColumnOptions = LoadColumnOptionsEnum.LoadAllColumnsExceptExcluded;
// loadWorksheetInfo.LoadColumnOptions = LoadColumnOptionsEnum.LoadSpecifiedColumns;

// load the worksheet
Worksheet worksheet = ExcelDataLoader.LoadWorksheet(path, loadWorksheetInfo);

// if the worksheet exists
if ((NullHelper.Exists(worksheet)) && (SheetnameControl.HasSelectedObject))
{
    // if the rows collection was found
    if (worksheet.HasRows)
    {
        // Show a message as a test
        // MessageBox.Show("Worksheet Loaded", "Finished");

        // test only
        // int rows = worksheet.Rows.Count;

        // Show a message as a test
        // MessageBox.Show("There were " + String.Format("{0:n0}",  rows) + " rows found in the worksheet");

        // int cols = worksheet.Rows[1124].Columns.Count;

        // Show a message as a test
        // MessageBox.Show("There were " + String.Format("{0:n0}",  cols) + " columns found in the row index 1125.");

        // Get a nullable date
        // string columnValue = worksheet.Rows[1124].Columns[3].DateValue;

        // Show a message of the columnValue
        // MessageBox.Show("Column Value: " + columnValue);
    }
}

There is now a Code Generator class built into this project, to code generate a C# class from a header row. 
The Code Generator has been updated to pass in a Row instance, to make loading the generate classes simple.

This code is from a Windows Form .Net 5 project located in the sample:

# Code Generation Sample

    // if the value for HasWorksheet is true
    if ((HasWorksheet) && (ListHelper.HasOneOrMoreItems(Worksheet.Rows)))
    {
        // The file I am using to test has 3 rows at the top above the header row. Take this out if I accidently check this in
        // worksheet.Rows.RemoveRange(0, 3);

        // Set the outputFolder
        string outputFolder = OutputFolderControl.Text;

        // Set the className (the name of the generated class)
        string className = "SalesTaxEntry";

        // Create a new instance of a CodeGenerator
        CodeGenerator codeGenerator = new CodeGenerator(worksheet, outputFolder, className);

        // Generate a class and set the Namespace
        bool success = codeGenerator.GenerateClassFromWorksheet("STATS.Objects");

        // Show the results
        MessageBox.Show("Success: " + success);
    }


There is another override to load multiple sheets at once. I will build a sample project when I get some time to build a sample spreadsheet I can give away.

To load multiple sheets:

List<LoadWorksheetInfo> loadWorkSheetsInfo = new List<LoadWorksheetInfo>();

// Add each LoadWorksheetInfo
workbook = ExcellDataLoader.LoadWorkbook(path, loadWorkSheetsInfo)

I will build some helper methods to save writing as much code once I use this a little to know what is needed.

My first test loaded a 12 column spreadsheet with 3,376 rows in just a few seconds.

I have a new project that uses this project as a good sample. Blazor.Excelerate will soon be an online way to create classes from a spreadsheet.

https://github.com/DataJuggler/Blazor.Excelerate

More helper methods and features will be added. The Nuget package has been released: DataJuggler.Excelerate.

Feel free to mention any new features you think would be useful. I can't promise to do them all, but if it is a good fit for this project I will add it.

This code is all brand new, so use with caution until more testing has been done. First tests have been promising.

I just finished adding a Load method, that is code generated when the classes are written.

** I am available for hire if you need help with any size C# / SQL Server project **