不要closuresexcel.exe的时候用oledb打开它C＃

当我尝试closuresexcel文件时遇到问题。我使用OleDb打开excel文件，然后closures它。 但它不起作用。

 OleDbConnection ole = new OleDbConnection(connString); ole.Open(); comboBox1.DataSource = GetExcelSheetNames(filePath); OleDbCommand cmd = new OleDbCommand("Select * from [" + comboBox1.SelectedValue.ToString() + "]", ole); OleDbDataAdapter oledata = new OleDbDataAdapter(); oledata.SelectCommand = cmd; DataSet ds = new DataSet(); oledata.Fill(ds); DataTable datatable = ds.Tables[0]; StripEmptyRows(datatable); dataGridView3.DataSource = datatable; oledata.Dispose(); ole.Close(); ole = null; ds.Dispose(); 

P / s：这是一个GetExcelSheetName

  private String[] GetExcelSheetNames(string excelFile) { OleDbConnection objConn = null; System.Data.DataTable dt = null; String connString = ""; string[] fileSpit = filePath.Split('.'); try { if (filePath.Length > 1 && fileSpit[1] == "xls") { connString = "Provider=Microsoft.JET.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties=Excel 8.0"; } else { connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties=Excel 12.0"; } objConn = new OleDbConnection(connString); objConn.Open(); dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null); if (dt == null) { return null; } String[] excelSheets = new String[dt.Rows.Count]; int i = 0; foreach (DataRow row in dt.Rows) { excelSheets[i] = row["TABLE_NAME"].ToString(); i++; } return excelSheets; } catch (System.Exception ex) { return null; } finally { if (objConn != null) { objConn.Close(); objConn.Dispose(); } if (dt != null) { dt.Dispose(); } } } 

更新：我使用的代码，它的工作原理，但不好。

  private void ImportDialogBox_FormClosing(object sender, FormClosingEventArgs e) { HideImportDialogBox(); System.Windows.Forms.Application.Exit(); try { if (txtExcelFile.Text != null) { xlApp.Quit(); xlWorkbook.Close(true); } } catch { } finally //kill excel.exe { try { Process[] excelProcsNew = Process.GetProcessesByName("EXCEL"); foreach (Process procNew in excelProcsNew) { int exist = 0; foreach (Process procOld in excelProcsOld) { if (procNew.Id == procOld.Id) { exist++; } } if (exist == 0) { procNew.Kill(); } } } catch { } } }