Question

我无法使用C＃中的存储过程将数据插入SQL Server - 请帮忙。

string sqlConnectionString = ConfigurationManager.ConnectionStrings["SQLConnectionString"].ConnectionString;

using (SqlConnection sqlConnection = new SqlConnection(sqlConnectionString))
{
  using (SqlCommand command = new SqlCommand("AddFromExcel", sqlConnection))
  {
    command.CommandType = CommandType.StoredProcedure;
    command.CommandTimeout = 0;

    try
    {
      sqlConnection.Open();

      SqlParameter parameter = new SqlParameter();

      for (int i = 0; i < dtExport.Rows.Count ; i++)
      {
        command.Parameters.Clear();
        SqlParameter parameter1 = new SqlParameter();
        parameter1.ParameterName = "@FamilyName";
        parameter1.SqlDbType = SqlDbType.NVarChar;
        parameter1.Direction = ParameterDirection.Input;
        var value = Convert.ToString(dtExport.Rows[i]["Family"]);
        command.Parameters.AddWithValue("@FamilyName", value);

        SqlParameter parameter2 = new SqlParameter();
        parameter2.ParameterName = "@ExecutionName";
        parameter2.SqlDbType = SqlDbType.NVarChar;
        parameter2.Direction = ParameterDirection.Input;
        parameter2.Value = Convert.ToString(dtExport.Rows[i]["Execution"]);
        command.Parameters.AddWithValue("@ExecutionName", value);

        SqlParameter parameter3 = new SqlParameter();
        parameter3.ParameterName = "@VariantCode";
        parameter3.SqlDbType = SqlDbType.NVarChar;
        parameter3.Direction = ParameterDirection.Input;
        parameter3.Value = Convert.ToString(dtExport.Rows[i]["VariantCode"]); //this is column name in Excel
        command.Parameters.AddWithValue("@VariantCode", value);

        SqlParameter parameter4 = new SqlParameter();
        parameter4.ParameterName = "@FamilyDenomination";
        parameter4.SqlDbType = SqlDbType.NVarChar;
        parameter4.Direction = ParameterDirection.Input;
        parameter4.Value = Convert.ToString(dtExport.Rows[i]["Family Denomination"]);
        command.Parameters.AddWithValue("@FamilyDenomination", value);

        SqlParameter parameter5 = new SqlParameter();
        parameter4.ParameterName = "@ExcecutionDenomination";
        parameter4.SqlDbType = SqlDbType.NVarChar;
        parameter4.Direction = ParameterDirection.Input;
        parameter4.Value = Convert.ToString(dtExport.Rows[i]["Execution Denomination"]);
        command.Parameters.AddWithValue("@ExcecutionDenomination", value);

        SqlParameter parameter6 = new SqlParameter();
        parameter4.ParameterName = "@ReleasDatestring";
        parameter4.SqlDbType = SqlDbType.NVarChar;
        parameter4.Direction = ParameterDirection.Input;
        parameter4.Value = Convert.ToString(dtExport.Rows[i]["Release Date"]);
        command.Parameters.AddWithValue("@ReleasDatestring", value);

        SqlParameter parameter7 = new SqlParameter();
        parameter7.ParameterName = "@Validfromstring";
        parameter7.SqlDbType = SqlDbType.NVarChar;
        parameter7.Direction = ParameterDirection.Input;
        parameter7.Value = Convert.ToString(dtExport.Rows[i]["Valid From"]);
        command.Parameters.Add(parameter7 );

        command.ExecuteNonQuery();
       }
     }
     catch (SqlCeException ex)
     {
         string w = ex.Message.ToString();
         //MessageBox.Show("Error",
         //    "Error in Write to .: "
         //    + ex.Message, MessageBoxButtons.OK, MessageBoxIcon.Stop);
      }
    }
   }
  }
}

这里存储过程工作正常，即使我在运行程序时没有收到任何错误。但数据没有插入

Answer 1

在代码中使用command.Parameters.Add(Parameter_Name)，例如

for (int i = 0; i < dtExport.Rows.Count ; i++)
{

  command.Parameters.Clear();
  SqlParameter parameter1 = new SqlParameter();
  parameter1.ParameterName = "@FamilyName";
  parameter1.SqlDbType = SqlDbType.NVarChar;
  parameter1.Direction = ParameterDirection.Input;
  parameter1.Value = Convert.ToString(dtExport.Rows[i]["Family"]);
  command.Parameters.Add(parameter1);


  SqlParameter parameter2 = new SqlParameter();
  parameter2.ParameterName = "@ExecutionName";
  parameter2.SqlDbType = SqlDbType.NVarChar;
  parameter2.Direction = ParameterDirection.Input;
  parameter2.Value = Convert.ToString(dtExport.Rows[i]["Execution"]);
  command.Parameters.Add(parameter2);

  SqlParameter parameter3 = new SqlParameter();
  parameter3.ParameterName = "@VariantCode";
  parameter3.SqlDbType = SqlDbType.NVarChar;
  parameter3.Direction = ParameterDirection.Input;
  parameter3.Value = Convert.ToString(dtExport.Rows[i]["VariantCode"]); //this is column name in Excel
  command.Parameters.Add(parameter3);

   SqlParameter parameter4 = new SqlParameter();
   parameter4.ParameterName = "@FamilyDenomination";
   parameter4.SqlDbType = SqlDbType.NVarChar;
   parameter4.Direction = ParameterDirection.Input;
   parameter4.Value = Convert.ToString(dtExport.Rows[i]["Family Denomination"]);
   command.Parameters.Add(parameter4);

   SqlParameter parameter5 = new SqlParameter();
   parameter5.ParameterName = "@ExcecutionDenomination";
   parameter5.SqlDbType = SqlDbType.NVarChar;
   parameter5.Direction = ParameterDirection.Input;
   parameter5.Value = Convert.ToString(dtExport.Rows[i]["Execution Denomination"]);
   command.Parameters.Add(parameter5);


    SqlParameter parameter6 = new SqlParameter();
    parameter6.ParameterName = "@ReleasDatestring";
    parameter6.SqlDbType = SqlDbType.NVarChar;
    parameter6.Direction = ParameterDirection.Input;
    parameter6.Value = Convert.ToString(dtExport.Rows[i]["Release Date"]);
    command.Parameters.AddWithValue(parameter6);


    SqlParameter parameter7 = new SqlParameter();
    parameter7.ParameterName = "@Validfromstring";
    parameter7.SqlDbType = SqlDbType.NVarChar;
    parameter7.Direction = ParameterDirection.Input;
    parameter7.Value = Convert.ToString(dtExport.Rows[i]["Valid From"]);
    command.Parameters.Add(parameter7);

    command.ExecuteNonQuery();


  }

数据未插入SQL Server数据库中

1 个答案: