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      成功sql語句中直接寫變量

       北方天空A 2021-04-19

      public static PagedResultInOut<T> SqlPage<T>(string sql, string order, int page, int size, string desc = "DESC")
              {
                  try
                  {
                      string pageSql = $@"SELECT * FROM(
                                          SELECT ROW_NUMBER()OVER(ORDER BY {order} {desc}) NUMBER,*
                                          FROM({sql})AS [PAGE]) AS NUMBERTABLE WHERE NUMBER>=({size}*{page}-{size}) AND NUMBER<={size}*{page}";
                      string countSql = $@"SELECT COUNT(0) FROM ({sql}) AS [COUNT]";
                      using (SqlConnection Connection = new SqlConnection(connectionString))
                      {
                          if (Connection.State != ConnectionState.Open)
                              Connection.Open();
                          DataSet ds = new DataSet();
                          SqlCommand page_cmd = new SqlCommand(pageSql, Connection);
                          SqlDataAdapter da = new SqlDataAdapter(page_cmd);
                          SqlCommand count_cmd = new SqlCommand(countSql, Connection);
                          int count = Convert.ToInt32(count_cmd.ExecuteScalar());
                          try
                          {
                              da.Fill(ds);
                          }
                          catch (Exception ex)
                          {
                              return new PagedResultInOut<T>() { Msg = ex.Message, Rows = new List<T>(), Total = 0 };
                          }
                          var list = ConvertTo<T>(ds.Tables[0]);
                          return new PagedResultInOut<T>() { Msg = "查詢成功", Total = count, Rows = list };
                      }
                  }
                  catch (Exception ex)
                  {
                      return new PagedResultInOut<T>() { Msg = ex.Message, Rows = new List<T>(), Total = 0 };
                  }
              }

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