一般来说C#在不安装Excel软件的情况下，可以通过XML来创建Excel文档。因此，运行本文所述代码您无需安装Excel程序。本文原例子是使用VB.Net写的，以下的用C#改写的代码，分享给大家，供大家参考。

具体代码如下：

DataSet mDSData = new DataSet();mDSData.Tables.Add("myTable");mDSData.Tables["myTable"].Columns.Add("ID");mDSData.Tables["myTable"].Columns.Add("Name");mDSData.Tables["myTable"].Columns.Add("PassWord");for (int i = 0; i < 10; i++){ DataRow dr = mDSData.Tables["myTable"].NewRow(); dr["ID"] = i; dr["Name"] = i; dr["PassWord"] = i; mDSData.Tables["myTable"].Rows.Add(dr);}SaveFileDialog dialog1 = new SaveFileDialog();dialog1.AddExtension = true;dialog1.CheckPathExists = true;dialog1.Filter = "Excel Workbooks (*.xls) | *.xls";dialog1.OverwritePrompt = true;dialog1.Title = "Save Excel Formatted Report";if (dialog1.ShowDialog() == DialogResult.OK){ int num2 = 0; int num3 = mDSData.Tables[0].Rows.Count + 1; int num1 = mDSData.Tables[0].Columns.Count; num2 = 0; string text1 = dialog1.FileName; if (File.Exists(text1)) { File.Delete(text1); } StreamWriter writer1 = new StreamWriter(text1, false); StreamWriter writer2 = writer1; writer2.WriteLine("<?xml version=\"1.0\"?>"); writer2.WriteLine("<?mso-application progid=\"Excel.Sheet\"?>"); writer2.WriteLine("<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\""); writer2.WriteLine(" xmlns:o=\"urn:schemas-microsoft-com:office:office\""); writer2.WriteLine(" xmlns:x=\"urn:schemas-microsoft-com:office:excel\""); writer2.WriteLine(" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\""); writer2.WriteLine(" xmlns:html=\"http://:office:excel\">"); writer2.WriteLine(" <ProtectObjects>False</ProtectObjects>"); writer2.WriteLine(" <ProtectScenarios>False</ProtectScenarios>"); writer2.WriteLine(" </WorksheetOptions>"); writer2.WriteLine(" </Worksheet>"); writer2.WriteLine("</Workbook>"); writer2 = null; writer1.Close(); MessageBox.Show("Report Created", "Success", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);}

这只是主要的代码，使用前需要此入using相应的命名空间，如果不知道需要哪个命名空间，可在编译时根据提示逐个添加。