-7 
if (dpsessional.SelectedItem.Text.ToString().Equals("1"))
{

if (lengthofbatch == 1)
              {

                 com = new SqlCommand("insert into Attendence_Stu_Main(st_id,st_rollno,st_name,branch_name,sem_no,batch_year,batch_name,scode,sess_no,attendence,total) values (@Stid,@Strollno,@Stname,@Stbranch,@Ssemno,@Syear,@Sbatch,@Scode,@Ssessno,@Satt,@Stotal)", con);
              }
              else
              {
                  if (lbsubjecttype.Text.Equals("L"))

                  {
                      com = new SqlCommand("insert into Attendence_Stu_Main(st_id,st_rollno,st_name,branch_name,sem_no,batch_year,batch_name,scode,sess_no,attendence,total) values (@Stid,@Strollno,@Stname,@Stbranch,@Ssemno,@Syear,firstchar,@Scode,@Ssessno,00,00)", con);


                      com = new SqlCommand("insert into

Attendence_Stu_MainL1(st_id,st_rollno,st_name,branch_name,sem_no,batch_year,batch_name,scod e,sess_no,attendence,total) 值

(@Stid,@Strollno,@Stname,@Stbranch,@Ssemno,@Syear,@Sbatch,@Scode,@Ssessno,@Satt,@Stotal)",

缺点）；} 别的

                  {

com = new SqlCommand("插入

Attendence_Stu_MainL1(st_id,st_rollno,st_name,branch_name,sem_no,batch_year,batch_name,scod

e,sess_no,attendence,total) 值

(@Stid,@Strollno,@Stname,@Stbranch,@Ssemno,@Syear,@Sbatch,@Scode,@Ssessno,@Satt,@Stotal)",

缺点）；

                  }

                }
          }

               com.Parameters.AddWithValue("@Stid", g1.Cells[0].Text);

com.Parameters.AddWithValue("@Strollno", g1.Cells[1].Text); com.Parameters.AddWithValue("@Stname", g1.Cells[2].Text);

com.Parameters.AddWithValue("@Stbranch", g1.Cells[3].Text);

            com.Parameters.AddWithValue("@Ssemno", g1.Cells[4].Text);

            com.Parameters.AddWithValue("@Syear", g1.Cells[5].Text);

            com.Parameters.AddWithValue("@Sbatch", label1);

            com.Parameters.AddWithValue("@Scode", label2);

            com.Parameters.AddWithValue("@Ssessno", label3);

            com.Parameters.AddWithValue("@Satt", textbox);

            com.Parameters.AddWithValue("@Stotal", textbox1);





            com.ExecuteNonQuery();


            con.Close();
        }

        catch (SqlException ex)
        {

            Label5.Text = ex.Message;

            Label5.Visible = true;
        }




    }

}

..................................................... .........................................................

com = new SqlCommand("插入到 Attendence_Stu_Main(st_id,st_rollno,st_name,branch_name,sem_no,batch_year,batch_name,scode, sess_no,attendence,total) 值 (@Stid,@Strollno,@Stname,@Stbranch,@Ssemno,@ Syear,firstchar,@Scode,@Ssessno,00,00)", con);

com = new SqlCommand("插入

Attendence_Stu_MainL1(st_id,st_rollno,st_name,branch_name,sem_no,batch_year,batch_name,scod

e,sess_no,attendence,total) 值

(@Stid,@Strollno,@Stname,@Stbranch,@Ssemno,@Syear,@Sbatch,@Scode,@Ssessno,@Satt,@Stotal)",

缺点）；

从插入命令的 2 中，只有一个被触发，另一个没有被触发..我尝试过使用

调试，显示清晰遍历但无法存储在表中

4

1 回答 1

4

尽管这是人类最难以理解的问题，但我将尝试回答这个问题。如果您可以使您的问题易于阅读和简洁，并让我们知道您的期望，那就去做吧。

你不断地覆盖你的命令。

com = new SqlCommand("insert into Attendence_Stu_Main(st_id,st_rollno,st_name,branch_name,sem_no,batch_year,batch_name,scode,sess_no,attendence,total) values (@Stid,@Strollno,@Stname,@Stbranch,@Ssemno,@Syear,firstchar,@Scode,@Ssessno,00,00)", con);

然后，在没有实际将更改提交到数据库的情况下，您将覆盖它：

com = new SqlCommand("insert into Attendence_Stu_MainL1(st_id,st_rollno,st_name,branch_name,sem_no,batch_year,batch_name,scode,sess_no,attendence,total) values (@Stid,@Strollno,@Stname,@Stbranch,@Ssemno,@Syear,@Sbatch,@Scode,@Ssessno,@Satt,@Stotal)",

我会让它们成为两个不同的SqlCommand实例。

顺便说一句，您正在进行的数据库表和列命名方案并不那么漂亮。

于 2013-02-04T16:27:00.377 回答