原例子使用VB.Net写的，以下的用C#改写的代码
原文代码：
http://www.gotdotnet.com/Community/UserSamples/Details.aspx?SampleGuid=ddbaecb9-a260-4656-9f22-300b6a1ce66c
本例使用XML来创建Excel文档，但在运行时不需要安装Excel程序。
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://www.w3.org/TR/REC-html40\">");
writer2.WriteLine(" <DocumentProperties xmlns=\"urn:schemas-microsoft-com:office:office\">");
writer2.WriteLine(" <Author>Automated Report Generator Example</Author>");
writer2.WriteLine(string.Format(" <Created>{0}T{1}Z</Created>", DateTime.Now.ToString("yyyy-mm-dd"), DateTime.Now.ToString("HH:MM:SS")));
writer2.WriteLine(" <Company>Your Company Here</Company>");
writer2.WriteLine(" <Version>11.6408</Version>");
writer2.WriteLine(" </DocumentProperties>");
writer2.WriteLine(" <ExcelWorkbook xmlns=\"urn:schemas-microsoft-com:office:excel\">");
writer2.WriteLine(" <WindowHeight>8955</WindowHeight>");
writer2.WriteLine(" <WindowWidth>11355</WindowWidth>");
writer2.WriteLine(" <WindowTopX>480</WindowTopX>");
writer2.WriteLine(" <WindowTopY>15</WindowTopY>");
writer2.WriteLine(" <ProtectStructure>False</ProtectStructure>");
writer2.WriteLine(" <ProtectWindows>False</ProtectWindows>");
writer2.WriteLine(" </ExcelWorkbook>");
writer2.WriteLine(" <Styles>");
writer2.WriteLine(" <Style ss:ID=\"Default\" ss:Name=\"Normal\">");
writer2.WriteLine(" <Alignment ss:Vertical=\"Bottom\"/>");
writer2.WriteLine(" <Borders/>");
writer2.WriteLine(" <Font/>");
writer2.WriteLine(" <Interior/>");
writer2.WriteLine(" <Protection/>");
writer2.WriteLine(" </Style>");
writer2.WriteLine(" <Style ss:ID=\"s21\">");
writer2.WriteLine(" <Alignment ss:Vertical=\"Bottom\" ss:WrapText=\"1\"/>");
writer2.WriteLine(" </Style>");
writer2.WriteLine(" </Styles>");
writer2.WriteLine(" <Worksheet ss:Name=\"MyReport\">");
writer2.WriteLine(string.Format(" <Table ss:ExpandedColumnCount=\"{0}\" ss:ExpandedRowCount=\"{1}\" x:FullColumns=\"1\"", num1.ToString(), num3.ToString()));
writer2.WriteLine(" x:FullRows=\"1\">");
foreach (DataRow row1 in mDSData.Tables[0].Rows)
{
writer2.WriteLine("<Row>");
for (num2 = 0; num2 != num1; num2++)
{
writer2.Write("<Cell ss:StyleID=\"s21\"><Data ss:Type=\"String\">");
writer2.Write(row1[num2].ToString());
writer2.WriteLine("</Data></Cell>");
}
writer2.WriteLine("</Row>");
}
writer2.WriteLine(" </Table>");
writer2.WriteLine(" <WorksheetOptions xmlns=\"urn:schemas-microsoft-com:office:excel\">");
writer2.WriteLine(" <Selected/>");
writer2.WriteLine(" <Panes>");
writer2.WriteLine(" <Pane>");
writer2.WriteLine(" <Number>3</Number>");
writer2.WriteLine(" <ActiveRow>1</ActiveRow>");
writer2.WriteLine(" </Pane>");
writer2.WriteLine(" </Panes>");
writer2.WriteLine(" <ProtectObjects>False</ProtectObjects>");
writer2.WriteLine(" <ProtectScenarios>False</ProtectScenarios>");
writer2.WriteLine(" </WorksheetOptions>");
writer2.WriteLine(" </Worksheet>");
writer2.WriteLine(" <Worksheet ss:Name=\"Sheet2\">");
writer2.WriteLine(" <WorksheetOptions xmlns=\"urn:schemas-microsoft-com:office:excel\">");
writer2.WriteLine(" <ProtectObjects>False</ProtectObjects>");
writer2.WriteLine(" <ProtectScenarios>False</ProtectScenarios>");
writer2.WriteLine(" </WorksheetOptions>");
writer2.WriteLine(" </Worksheet>");
writer2.WriteLine(" <Worksheet ss:Name=\"Sheet3\">");
writer2.WriteLine(" <WorksheetOptions xmlns=\"urn:schemas-microsoft-com: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);
}