Excel Library for C# and VB.NET applications

The fastest way how you can get started with GemBox.Spreadsheet library is by exploring our collection of C# and VB.NET examples. These are live examples that demonstrate various supported Excel features in GemBox.Spreadsheet.

System Requirements

GemBox.Spreadsheet requires only the .NET Framework version 3.0 or above. A special build for .NET Framework version 2.0 is also provided.

Hello World

The following example creates a simple Excel file using C# and VB.NET code. It shows how to initialize the GemBox.Spreadsheet content model, populate some cells, and then save an ExcelFile instance to a file in the desired format. It also demonstrates support for international characters (Unicode).

Screenshot
Excel Library for C# / VB.NET Screenshot

See the full code below, use Run Example to execute. 

using GemBox.Spreadsheet;

class Sample
{
    [STAThread]
    static void Main(string[] args)
    {
        // If using Professional version, put your serial key below.
        SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY");

        ExcelFile ef = new ExcelFile();
        ExcelWorksheet ws = ef.Worksheets.Add("Hello World");

        ws.Cells[0, 0].Value = "English:";
        ws.Cells[0, 1].Value = "Hello";

        ws.Cells[1, 0].Value = "Russian:";
        // Using UNICODE string.
        ws.Cells[1, 1].Value = new string(new char[] { '\u0417', '\u0434', '\u0440', '\u0430', '\u0432', '\u0441', '\u0442', '\u0432', '\u0443', '\u0439', '\u0442', '\u0435' });

        ws.Cells[2, 0].Value = "Chinese:";
        // Using UNICODE string.
        ws.Cells[2, 1].Value = new string(new char[] { '\u4f60', '\u597d' });

        ws.Cells[4, 0].Value = "In order to see Russian and Chinese characters you need to have appropriate fonts on your PC.";
        ws.Cells.GetSubrangeAbsolute(4, 0, 4, 7).Merged = true;

        ef.Save("Hello World.xlsx");
    }
}
Imports GemBox.Spreadsheet

Module Samples

    Sub Main()

        ' If using Professional version, put your serial key below.
        SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY")

        Dim ef As ExcelFile = New ExcelFile
        Dim ws As ExcelWorksheet = ef.Worksheets.Add("Hello World")

        ws.Cells(0, 0).Value = "English:"
        ws.Cells(0, 1).Value = "Hello"

        ws.Cells(1, 0).Value = "Russian:"
        ' Using UNICODE string.
        ws.Cells(1, 1).Value = New String(New Char() {ChrW(&H417), ChrW(&H434), ChrW(&H440), ChrW(&H430), ChrW(&H432), ChrW(&H441), ChrW(&H442), ChrW(&H432), ChrW(&H443), ChrW(&H439), ChrW(&H442), ChrW(&H435)})

        ws.Cells(2, 0).Value = "Chinese:"
        ' Using UNICODE string.
        ws.Cells(2, 1).Value = New String(New Char() {ChrW(&H4F60), ChrW(&H597D)})

        ws.Cells(4, 0).Value = "In order to see Russian and Chinese characters you need to have appropriate fonts on your PC."
        ws.Cells.GetSubrangeAbsolute(4, 0, 4, 7).Merged = True

        ef.Save("Hello World.xlsx")

    End Sub

End Module

Check next sample.