小编Mal*_*ris的帖子

这是一个只能创建create xls文件的代码.但我想创建xlsx(Excel)文件; 我怎么能从这段代码那里做到这一点,否则我可以用另一个代码来创建xlsx文件.

using Excel = Microsoft.Office.Interop.Excel;
using System.Runtime.InteropServices;


Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();

            if (xlApp == null)
            {
                MessageBox.Show("Excel is not properly installed!!");
                return;
            }


            Excel.Workbook xlWorkBook;
            Excel.Worksheet xlWorkSheet;
            object misValue = System.Reflection.Missing.Value;

            xlWorkBook = xlApp.Workbooks.Add(misValue);
            xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

            xlWorkSheet.Cells[1, 1] = "ID";
            xlWorkSheet.Cells[1, 2] = "Name";
            xlWorkSheet.Cells[2, 1] = "1";
            xlWorkSheet.Cells[2, 2] = "One";
            xlWorkSheet.Cells[3, 1] = "2";
            xlWorkSheet.Cells[3, 2] = "Two";



            xlWorkBook.SaveAs("d:\\vdfgdfg.xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
            xlWorkBook.Close(true, misValue, misValue);
            xlApp.Quit(); …

Error: Could not find or load main class org.apache.maven.surefire.booter.ForkedBooter Jenkins.

我从jenkins构建Maven项目时遇到以下错误。

这是我的代码,我无法检索多个数据,如果我只给它一个列它可以工作,但当我给多列时,它与我使用c#和sql服务器工作.

 SqlConnection con3 = new SqlConnection(conString);
 con3.Open();
 if (con3.State == System.Data.ConnectionState.Open)
 {
     string s = "SELECT ([reg_grade] ,[t_name],[start_time], [end_time]) from addteacher where class_id='" + comboBox2.SelectedItem.ToString() + "' ";
     SqlCommand cm = new SqlCommand(s, con3);
     SqlDataReader dr1 = cm.ExecuteReader();
     while (dr1.Read())
     {
         grade_att.Text = (dr1["reg_grade"]).ToString();
         tname_att.Text = (dr1["t_name"]).ToString();
         stime.Text = (dr1["start_time"]).ToString();
         etime.Text = (dr1["end_time"]).ToString();
     }
 }
 con3.Close();