How Can I Create Excel Files in C# Without Using Microsoft Office?

In C#, no Microsoft Office is required to create an excel file

Many developers need to create an excel table in the application without relying on Microsoft Office. In C#, some libraries can help programmers realize this.

A commonly used option is

Excellibrary

, an open source library that can be obtained on Google Code. Although it mainly supports the older .xls format, it provides a simple and easy -to -use interface. In addition, Excellibrary contains a DataSethelper, which is convenient for seamless integration with DataSet and DataTable. Another feasible alternative is

Epplus

, which is compatible with the newer .xlsx format used in Excel 2007 and higher versions. It has active development and comprehensive documents.

NPOI

is another option to support XLS and XLSX formats. However, due to its continuous update and functional enhancement, Epplus is widely considered the most powerful choice.

For example, Epplus supports data perspective tables, and other libraries may not support.

The following is an example of using

Excellibrary

Export the database data to the Excel workbook:

These libraries provide a convenient and efficient solution for the creation of the Excel file in C#, enabling developers to expand their applications' functions without Microsoft Office. Please note that in the above code example,

is replaced with a more standardized

<code class="language-csharp">DataSet ds = new DataSet("New_DataSet");
DataTable dt = new DataTable("New_DataTable");
OleDbConnection con = new OleDbConnection(dbConnectionString);
string sql = "SELECT Whatever FROM MyDBTable;";
OleDbDataAdapter adptr = new OleDbDataAdapter(sql, con); // 修正：将cmd替换为sql和con
adptr.Fill(dt);
ds.Tables.Add(dt);
ExcelLibrary.DataSetHelper.CreateWorkbook("MyExcelFile.xls", ds);</code>

and

to ensure the correctness of the code. cmd

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