Create spreadsheet from existing template in C#, VB.NET

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Syncfusion Excel (XlsIO) library is a .NET Excel library used to create, read, and edit Excel documents. Also, converts Excel documents to PDF files. Using this library, you can create spreadsheet from existing template in C#, VB.NET.

You can create spreadsheet from existing template by using the ‘Workbooks.Open’ method. A template is a workbook whose formatting will be inherited by the new workbook created. The template may be designed either through the code or through the Microsoft Excel designer. It is even easier to create the template using the Microsoft Excel designer.

Steps to create spreadsheet from existing template, programmatically:

Step 1: Create a new C# console application project.

Create new console application project

Create a new C# console application

Step 2: Install the Syncfusion.XlsIO.WinForms NuGet package as reference to your .NET Framework application from NuGet.org.

Install NuGet package

Step 3: Include the following namespaces in the Program.cs file.

using Syncfusion.XlsIO;
using System.IO;
using System.Reflection;

VB.NET

Imports Syncfusion.XlsIO
Imports System.IO
Imports System.Reflection

Step 4: Use the following code snippet to create spreadsheet from existing template in C#, VB.NET.

//Create Excel engine
using (ExcelEngine excelEngine = new ExcelEngine())
{
    //Instantiate the application object
    IApplication application = excelEngine.Excel;
 
    //Create spreadsheet from existing template
    IWorkbook workbook = application.Workbooks.Open("Template.xlsx");
 
    //The first worksheet object in the worksheets collection is accessed
    IWorksheet worksheet = workbook.Worksheets[0];
 
    //A text is set in the first cell of the worksheet
    worksheet[1, 1].Text = "Syncfusion Essential Studio®";
 
    //Save the spreadsheet
    workbook.SaveAs("Output.xlsx");
}

VB.NET

'Create Excel engine
Using excelEngine As ExcelEngine = New ExcelEngine()
    'Instantiate the application object
    Dim application As IApplication = excelEngine.Excel
 
    'Create spreadsheet from existing template
    Dim workbook As IWorkbook = application.Workbooks.Open("Template.xlsx")
 
    'The first worksheet object in the worksheets collection is accessed
    Dim worksheet As IWorksheet = workbook.Worksheets(0)
 
    'A text is set in the first cell of the worksheet
    worksheet(1, 1).Text = "Syncfusion Essential Studio®"
 
    'Save the spreadsheet
    workbook.SaveAs("Output.xlsx")
End Using

A complete Windows Forms working example of how to create spreadsheet from existing template in C#, VB.NET can be downloaded from create-spreadsheet-from-existing-template.zip.

By executing the program, you will get the output as below.

Output Excel document

Refer here to explore the rich set of Syncfusion Excel (XlsIO) library features.

Create spreadsheet from existing template in C#, VB.NET

Steps to create spreadsheet from existing template, programmatically:

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