我是C＃的新手...我正在SQL Server中创建两个表到一个Excel工作表的应用程序。我成功将一个表导出到excel，但是我不知道将第二个表导出到同一Excel工作表，并且两个表在excel单元中的放置方式不同...所以无法加入我的代码下面的表帮我解决这个问题
class ExportToExcel
{
private Excel.Application app;
private Excel.Workbook workbook;
private Excel.Worksheet previousWorksheet;
private static string CONNECTION_STR = "Integrated Security=True";
public ExportToExcel()
{
this.app = null;
this.workbook = null;
this.previousWorksheet = null;
createDoc();
}
private void createDoc()
{
try
{
app = new Excel.Application();
app.Visible = false;
workbook = app.Workbooks.Add(1);
}
catch (Exception e)
{
Console.Write(e.ToString());
}
finally
{
}
}
public void shutDown()
{
try
{
workbook = null;
app.Quit();
}
catch (Exception e)
{
Console.Write(e.ToString());
}
finally
{
}
}
public void ExportTable(string query, string sheetName)
{
SqlConnection myConnection = new SqlConnection(CONNECTION_STR);
SqlDataReader myReader = null;
try
{
Excel.Worksheet oSheet = (Excel.Worksheet)workbook.Sheets.Add(Missing.Value, Missing.Value, 1, Excel.XlSheetType.xlWorksheet);
oSheet.Name = sheetName;
previousWorksheet = oSheet;
myConnection.Open();
SqlCommand myCommand = new SqlCommand(query, myConnection);
myReader = myCommand.ExecuteReader();
int columnCount = myReader.FieldCount;
int rowCounter = 3;
while (myReader.Read())
{
for (int n = 0; n < columnCount; n++)
{
addData(oSheet, rowCounter, n + 1, myReader[myReader.GetName(n)].ToString());
}
rowCounter++;
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
finally
{
if (myReader != null && !myReader.IsClosed)
{
myReader.Close();
}
if (myConnection != null)
{
myConnection.Close();
}
myReader = null;
myConnection = null;
}
}
public void createHeaders(Excel.Worksheet worksheet, int row, int col, string htext)
{
worksheet.Cells[row, col] = htext;
}
public void addData(Excel.Worksheet worksheet, int row, int col, string data)
{
worksheet.Cells[row, col] = data;
}
public void SaveWorkbook()
{
String folderPath = "C:\\My Files\\";
if (!System.IO.Directory.Exists(folderPath))
{
System.IO.Directory.CreateDirectory(folderPath);
}
DateTime today = DateTime.Today;
string fileNameBase = today.ToString("dd-MMM-yyyy");
String fileName = today.ToString("dd-MMM-yyyy");
string ext = ".xlsx";
int counter = 1;
while (System.IO.File.Exists(folderPath + fileName + ext))
{
fileName = fileNameBase + counter;
counter++;
}
fileName = fileName + ext;
string filePath = folderPath + fileName;
try
{
workbook.SaveAs(filePath, Excel.XlFileFormat.xlWorkbookDefault, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
static void Main(string[] args)
{
ExportToExcel export = new ExportToExcel();
export.ExportTable("SELECT * from Table_1", "Data");
export.SaveWorkbook();
export.shutDown();
}
}