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  • EF中Entity SQL用法

     public List<policecase> GetPoliceCaseList(PoliceCaseFilter view)
            {
                string sqlString = "SELECT value pc FROM Entities.policecase AS pc";
                var where = "";
                if (!string.IsNullOrWhiteSpace(view.CaseAddress))
                {
                    //警情地址
                    if (where != "")
                    {
                        where += " and pc.[警情地址]  like '%" + view.CaseAddress + "%'";
                    }
                    else
                    {
                        where += " where pc.[警情地址]  like '%" + view.CaseAddress + "%'";
                    }             
                }
                if (!string.IsNullOrWhiteSpace(view.CaseType))
                {
                    //警情类别
                    if (where != "")
                    {
                        where += " and pc.[警情类别] like '%" + view.CaseType + "%'";
                    }
                    else
                    {
                        where += " where pc.[警情类别] like '%" + view.CaseType + "%'";
                    }
                }
                if (!string.IsNullOrWhiteSpace(view.StartTime))
                {              
                    //报警时间
                    if (where != "")
                    {
                        where += " and pc.[报警时间] >=datetime'" + Convert.ToDateTime(view.StartTime).ToString("yyyy-MM-dd HH:mm:ss") + "'";
                    }
                    else
                    {
                        where += " where pc.[报警时间] >=datetime'" + Convert.ToDateTime(view.StartTime).ToString("yyyy-MM-dd HH:mm:ss") + "'";
                    }
                }
                if (!string.IsNullOrWhiteSpace(view.EndTime))
                {
                    //报警时间
                    if (where != "")
                    {
                        where += " and pc.[报警时间] <=datetime'" + Convert.ToDateTime(view.EndTime).ToString("yyyy-MM-dd HH:mm:ss") + "'";
                    }
                    else
                    {
                        where += " where pc.[报警时间] <=datetime'" + Convert.ToDateTime(view.EndTime).ToString("yyyy-MM-dd HH:mm:ss") + "'";
                    }
                }
                if (!string.IsNullOrWhiteSpace(view.PoliceStation))
                {
                    //所属分局
                    if (where != "")
                    {
                        where += " and pc.[所属分局] like '%" + view.PoliceStation + "%'";
                    }
                    else
                    {
                        where += " where pc.[所属分局] like '%" + view.PoliceStation + "%'";
                    }
                }
                if (!string.IsNullOrWhiteSpace(view.RptType))
                {
                    //报警类型
                    if (where != "")
                    {
                        where += " and pc.[报警类型] like '%" + view.RptType + "%'";
                    }
                    else
                    {
                        where += " where pc.[报警类型] like '%" + view.RptType + "%'";
                    }
                }

                sqlString += where;

                var objctx = (Repository as IObjectContextAdapter).ObjectContext;
                ObjectQuery<policecase> pc = objctx.CreateQuery<policecase>(sqlString);

                var data = pc.ToList();

                return data;
            }
        }

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  • 原文地址:https://www.cnblogs.com/jf-guo/p/6411421.html
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