问题编辑，因为简单的表格不会使事情变得简单..
问题是我必须选择动态列值.. 列名来自prev page（DropDownList）=＆gt;当前页面（HiddenField）
这是我的当前代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using System.Data;
public partial class ViewChart : System.Web.UI.Page
{
BlupDataContext database = new BlupDataContext();
protected void Page_Load(object sender, EventArgs e)
{
HiddenFieldWCellName.Value = Request.QueryString["WCEL_Name"];
HiddenFieldSeries1.Value = Request.QueryString["Series1"];
HiddenFieldSeries2.Value = Request.QueryString["Series2"];
var q = from x in database.RSRAN079s
join y in database.RSRAN084s
on x.WCEL_Name equals y.WCEL_Name
where x.WCEL_Name == HiddenFieldWCellName.Value
select new
{
RSRAN079_ID = x.RSRAN079_ID,
PeriodStartTime = x.PeriodStartTime,
PLMN_Name = x.PLMN_Name,
RNC_Name = x.RNC_Name,
WBTS_Name = x.WBTS_Name,
WBTS_ID = x.WBTS_ID,
WCEL_Name = x.WCEL_Name,
WCEL_ID = x.WCEL_ID,
RRC_Conn_Access_Completitions = x.RRC_Conn_Access_Completitions,
RRC_Active_Drops_IU_FR = x.RRC_Active_Drops_IU_FR,
RRC_Active_Drops_IU_Fails = x.RRC_Active_Drops_IU_Fails,
RRC_Active_Drops_Radio_FR = x.RRC_Active_Drops_Radio_FR,
RRC_Active_Drops_Radio_Fails = x.RRC_Active_Drops_Radio_Fails,
RRC_Active_Drops_BTS_FR = x.RRC_Active_Drops_BTS_FR,
RRC_Active_Drops_BTS_Fails = x.RRC_Active_Drops_BTS_Fails,
RRC_Active_Drops_IUR_FR = x.RRC_Active_Drops_IUR_FR,
RRC_Active_Drops_IUR_Fails = x.RRC_Active_Drops_IUR_Fails,
RRC_Active_Drops_CIPH_FR = x.RRC_Active_Drops_CIPH_FR,
RRC_Active_Drops_CIPH_Fails = x.RRC_Active_Drops_CIPH_Fails,
RRC_Active_Drops_RNC_FR = x.RRC_Active_Drops_RNC_FR,
RRC_Active_Drops_RNC_Fails = x.RRC_Active_Drops_RNC_Fails,
RRC_Active_Drops_UE_FR = x.RRC_Active_Drops_UE_FR,
RRC_Active_Drops_UE_Fails = x.RRC_Active_Drops_UE_Fails,
RAB_Retainability_CS_Voice_SR = x.RAB_Retainability_CS_Voice_SR,
RAB_Retainability_CS_Conv_SR = x.RAB_Retainability_CS_Conv_SR,
RAB_Retainability_PS_SR = x.RAB_Retainability_PS_SR,
AMR_RAB_Setup_Access_Completitions = x.AMR_RAB_Setup_Access_Completitions,
AMR_RAB_Drop_Active_Drops_IF_FR = x.AMR_RAB_Drop_Active_Drops_IF_FR,
AMR_RAB_Drop_Active_Drops_IU_Fails = x.AMR_RAB_Drop_Active_Drops_IU_Fails,
AMR_RAB_Drop_Active_Drops_Radio_FR = x.AMR_RAB_Drop_Active_Drops_Radio_FR,
AMR_RAB_Drop_Active_Drops_Radio_Fails = x.AMR_RAB_Drop_Active_Drops_Radio_Fails,
AMR_RAB_Drop_Active_Drops_BTS_FR = x.AMR_RAB_Drop_Active_Drops_BTS_FR,
AMR_RAB_Drop_Active_Drops_BTS_Fails = x.AMR_RAB_Drop_Active_Drops_BTS_Fails,
AMR_RAB_Drop_Active_Drops_IUR_FR = x.AMR_RAB_Drop_Active_Drops_IUR_FR,
AMR_RAB_Drop_Active_Drops_IUR_Fails = x.AMR_RAB_Drop_Active_Drops_IUR_Fails,
AMR_RAB_Drop_Active_Drops_RNC_FR = x.AMR_RAB_Drop_Active_Drops_RNC_FR,
AMR_RAB_Drop_Active_Drops_RNC_Fails = x.AMR_RAB_Drop_Active_Drops_RNC_Fails,
AMR_RAB_Drop_Active_Drops_UE_FR = x.AMR_RAB_Drop_Active_Drops_UE_FR,
AMR_RAB_Drop_Active_Drops_UE_Fails = x.AMR_RAB_Drop_Active_Drops_UE_Fails,
CS_Conv_RAB_Setup_Access_Completitions = x.CS_Conv_RAB_Setup_Access_Completitions,
CS_Conv_RAB_Retainability_Completitions = x.CS_Conv_RAB_Retainability_Completitions,
CS_Conv_RAB_Active_Drops_IU_FR = x.CS_Conv_RAB_Active_Drops_IU_FR,
CS_Conv_RAB_Active_Drops__IU_Fails = x.CS_Conv_RAB_Active_Drops__IU_Fails,
CS_Conv_RAB_Active_Drops_Radio_FR = x.CS_Conv_RAB_Active_Drops_Radio_FR,
CS_Conv_RAB_Active_Drops_Radio_Fails = x.CS_Conv_RAB_Active_Drops_Radio_Fails,
CS_Conv_RAB_Active_Drops_BTS_FR = x.CS_Conv_RAB_Active_Drops_BTS_FR,
CS_Conv_RAB_Active_Drops_BTS_Fails = x.CS_Conv_RAB_Active_Drops_BTS_Fails,
CS_Conv_RAB_Active_Drops_IUR_FR = x.CS_Conv_RAB_Active_Drops_IUR_FR,
CS_Conv_RAB_Active_Drops_IUR_Fails = x.CS_Conv_RAB_Active_Drops_IUR_Fails,
CS_Conv_RAB_Active_Drops_RNC_FR = x.CS_Conv_RAB_Active_Drops_RNC_FR,
CS_Conv_RAB_Active_Drops_RNC_Fails = x.CS_Conv_RAB_Active_Drops_RNC_Fails,
CS_Conv_RAB_Active_Drops_UE_FR = x.CS_Conv_RAB_Active_Drops_UE_FR,
CS_Conv_RAB_Active_Drops_UE_Fails = x.CS_Conv_RAB_Active_Drops_UE_Fails,
Packet_Service_RAB_Setup_Access_Completitions = x.Packet_Service_RAB_Setup_Access_Completitions,
Packet_Service_RAB_Retainability_Completitions = x.Packet_Service_RAB_Retainability_Completitions,
Packet_Service_RAB_Active_Drops_IU_FR = x.Packet_Service_RAB_Active_Drops_IU_FR,
Packet_Service_RAB_Active_Drops_Fails = x.Packet_Service_RAB_Active_Drops_Fails,
Packet_Service_RAB_Active_Drops_Radio_FR = x.Packet_Service_RAB_Active_Drops_Radio_FR,
Packet_Service_RAB_Active_Drops_Radio_Fails = x.Packet_Service_RAB_Active_Drops_Radio_Fails,
Packet_Service_RAB_Active_Drops_BTS_FR = x.Packet_Service_RAB_Active_Drops_BTS_FR,
Packet_Service_RAB_Active_Drops_BTS_Fails = x.Packet_Service_RAB_Active_Drops_BTS_Fails,
Packet_Service_RAB_Active_Drops_IUR_FR = x.Packet_Service_RAB_Active_Drops_IUR_FR,
Packet_Service_RAB_Active_Drops_IUR_Fails = x.Packet_Service_RAB_Active_Drops_IUR_Fails,
Packet_Service_RAB_Active_Drops_RNC_FR = x.Packet_Service_RAB_Active_Drops_RNC_FR,
Packet_Service_RAB_Active_Drops_RNC_Fails = x.Packet_Service_RAB_Active_Drops_RNC_Fails,
Packet_Service_RAB_Active_Drops_UE_FR = x.Packet_Service_RAB_Active_Drops_UE_FR,
Packet_Service_RAB_Active_Drops_UE_Fails = x.Packet_Service_RAB_Active_Drops_UE_Fails,
Packet_Session_Rel_HSDSCH_EDCH = x.Packet_Session_Rel_HSDSCH_EDCH,
Packet_Session_Rel_HSDSCH_DCH = x.Packet_Session_Rel_HSDSCH_DCH,
Packet_Session_Rel_Alloc_Rel = x.Packet_Session_Rel_Alloc_Rel,
Packet_Session_Success_Ratio_SR = x.Packet_Session_Success_Ratio_SR,
Packet_Session_Drops_HSDSCH_EDCH_DR = x.Packet_Session_Drops_HSDSCH_EDCH_DR,
Packet_Session_Drops_HSDSCH_EDCH_Drops = x.Packet_Session_Drops_HSDSCH_EDCH_Drops,
Packet_Session_Drops_HSDSCH_DCH_DR = x.Packet_Session_Drops_HSDSCH_DCH_DR,
Packet_Session_Drops_HSDSCH_DCH_Drops = x.Packet_Session_Drops_HSDSCH_DCH_Drops,
Packet_Session_Drops_DCH_DR = x.Packet_Session_Drops_DCH_DR,
Packet_Session_Drops_DCH_Drops = x.Packet_Session_Drops_DCH_Drops,
Packet_Session_Drops_HSDSCH_EDCH_Other_DR = x.Packet_Session_Drops_HSDSCH_EDCH_Other_DR,
Packet_Session_Drops_HSDSCH_EDCH_Other_Drops = x.Packet_Session_Drops_HSDSCH_EDCH_Other_Drops,
Packet_Session_Drops_HSDSCH_DCH_Other_DR = x.Packet_Session_Drops_HSDSCH_DCH_Other_DR,
Packet_Session_Drops_HSDSCH_DCH_Other_Drops = x.Packet_Session_Drops_HSDSCH_DCH_Other_Drops,
Packet_Session_Drops_DCH_Other_DR = x.Packet_Session_Drops_DCH_Other_DR,
Packet_Session_Drops_DCH_Other_Drops = x.Packet_Session_Drops_DCH_Other_Drops,
HSDSCH_Alloc_Rel = x.HSDSCH_Alloc_Rel,
HSDPA_Retain_NW = x.HSDPA_Retain_NW,
HSDPA_Retain_RL_FR = x.HSDPA_Retain_RL_FR,
HSDPA_Retain_Non_RL_FR = x.HSDPA_Retain_Non_RL_FR,
HSDPA_Retain_Mobility_FR = x.HSDPA_Retain_Mobility_FR,
HSDPA_Retain_PRE_EMPTION_FR = x.HSDPA_Retain_PRE_EMPTION_FR,
HSDPA_Retain_Other_Mob_FR = x.HSDPA_Retain_Other_Mob_FR,
EDCH_Alloc_Rel = x.EDCH_Alloc_Rel,
HSUPA_Retain_NW = x.HSUPA_Retain_NW,
HSUPA_Retain_RL_FR = x.HSUPA_Retain_RL_FR,
HSUPA_Retain_EDCH_Rel_HSDSCH_SCC = x.HSUPA_Retain_EDCH_Rel_HSDSCH_SCC,
HSUPA_Retain_Other_FR = x.HSUPA_Retain_Other_FR,
HSDSCH_SCC_UE_FR = x.HSDSCH_SCC_UE_FR,
HSDSCH_SCC_UE_Fails = x.HSDSCH_SCC_UE_Fails,
HSDSCH_SCC_BTS_FR = x.HSDSCH_SCC_BTS_FR,
HSDSCH_SCC_BTS_Fails = x.HSDSCH_SCC_BTS_Fails,
HSDSCH_SCC_Trans_FR = x.HSDSCH_SCC_Trans_FR,
HSDSCH_SCC_Trans_Fails = x.HSDSCH_SCC_Trans_Fails,
HSDSCH_SCC_AC_FR = x.HSDSCH_SCC_AC_FR,
HSDSCH_SCC_AC_Fails = x.HSDSCH_SCC_AC_Fails,
HSDSCH_SCC_Other_FR = x.HSDSCH_SCC_Other_FR,
HSDSCH_SCC_Other_Fails = x.HSDSCH_SCC_Other_Fails,
R99_Alloc_Rel = x.R99_Alloc_Rel,
R99_Retain_NW = x.R99_Retain_NW,
Inter_RNC_SCC_Fail = x.Inter_RNC_SCC_Fail,
Inter_RNC_SCC_Drop = x.Inter_RNC_SCC_Drop,
RSRAN084_ID = y.RSRAN084_ID,
PeriodStartTime2 = y.PeriodStartTime,
RNC_Name2 = y.RNC_Name,
WBTS_Name2 = y.WBTS_Name,
WBTS_ID2 = y.WBTS_ID,
WCEL_Name2 = y.WCEL_Name,
WCEL_ID2 = y.WCEL_ID,
Cell_Availability = y.Cell_Availability,
Cell_Availability_Exclude = y.Cell_Availability_Exclude,
RRC_Set_Att = y.RRC_Set_Att,
RRC_Set_Acc_CR_NW = y.RRC_Set_Acc_CR_NW,
RRC_Set_Acc_CR_UE = y.RRC_Set_Acc_CR_UE,
RRC_Conn_Setup_SR = y.RRC_Conn_Setup_SR,
RRC_Conn_SR = y.RRC_Conn_SR,
RRC_Reg_Att = y.RRC_Reg_Att,
Regist_SR = y.Regist_SR,
RAB_Att_Voice = y.RAB_Att_Voice,
RAB_STP_and_ACC_CR_Voice = y.RAB_STP_and_ACC_CR_Voice,
RAB_SR_AMR_Voice = y.RAB_SR_AMR_Voice,
Min_per_Drop_Voice = y.Min_per_Drop_Voice,
CS_Serv_Dur_Voice = y.CS_Serv_Dur_Voice,
RAB_Att_UDI = y.RAB_Att_UDI,
RAB_Stp_Acc_SR = y.RAB_Stp_Acc_SR,
RAB_SR_UDI = y.RAB_SR_UDI,
Min_Per_Drop_UDI = y.Min_Per_Drop_UDI,
CS_Serv_Dur_UDI = y.CS_Serv_Dur_UDI,
PS_NRT_RAB_Att = y.PS_NRT_RAB_Att,
PS_NRT_RAB_CR = y.PS_NRT_RAB_CR,
PS_NRT_RAB_SR_NW = y.PS_NRT_RAB_SR_NW,
PS_NRT_RAB_SR_User = y.PS_NRT_RAB_SR_User,
Packet_Session_Att = y.Packet_Session_Att,
Packet_Session_Stp_SR = y.Packet_Session_Stp_SR,
RAB_Att_Stream = y.RAB_Att_Stream,
RAB_Stp_Acc_SR_Stream = y.RAB_Stp_Acc_SR_Stream,
RAB_SR_Stream = y.RAB_SR_Stream,
M_RAB_Att = y.M_RAB_Att,
M_RAB_Stp_Acc_SR = y.M_RAB_Stp_Acc_SR,
M_RAB_SR = y.M_RAB_SR,
SHO_Update_Att_RT = y.SHO_Update_Att_RT,
SHO_Update_Att_NRT = y.SHO_Update_Att_NRT,
SHO_SR_RT = y.SHO_SR_RT,
SHO_SR_NRT = y.SHO_SR_NRT,
SHO_Overhead = y.SHO_Overhead,
Inter_Sys_HHO_Att_RT = y.Inter_Sys_HHO_Att_RT,
Inter_Sys_HHO_Att_NRT = y.Inter_Sys_HHO_Att_NRT,
Inter_Sys_HHO_RT_SR = y.Inter_Sys_HHO_RT_SR,
Inter_Sys_HHOO_NRT_SR = y.Inter_Sys_HHOO_NRT_SR,
Inter_Sys_HHO_RT_DR = y.Inter_Sys_HHO_RT_DR,
Inter_Sys_HHO_NRT_DR = y.Inter_Sys_HHO_NRT_DR,
Inc_IS_Change_Att = y.Inc_IS_Change_Att,
Intra_Sys_HHO_Att = y.Intra_Sys_HHO_Att,
Intra_Sys_HHO_SR = y.Intra_Sys_HHO_SR,
R99_Allo_DL_DCH_Cap_Data_Call = y.R99_Allo_DL_DCH_Cap_Data_Call,
R99_Allo_UL_DCH_Cap_Data_Call = y.R99_Allo_UL_DCH_Cap_Data_Call,
HSDSCH_Selections = y.HSDSCH_Selections,
HSDPA_Res_Acc_NRT = y.HSDPA_Res_Acc_NRT,
HSDPA_Res_Retain_NRT = y.HSDPA_Res_Retain_NRT,
HSDPA_Res_Retain_RT = y.HSDPA_Res_Retain_RT,
HSDPA_Attempt = y.HSDPA_Attempt,
HSDPA_SR = y.HSDPA_SR,
Avg_MAC_D_THP = y.Avg_MAC_D_THP,
Act_HSDSCH_MAC_D_THP_NW = y.Act_HSDSCH_MAC_D_THP_NW,
HSDPA_DL_DATA_Rcvd_NodeB = y.HSDPA_DL_DATA_Rcvd_NodeB,
HSDPA_MAC_HS_Data_Vol_at_RNC = y.HSDPA_MAC_HS_Data_Vol_at_RNC,
HSPDA_MAC_HS_Efficiency = y.HSPDA_MAC_HS_Efficiency,
HARQ_Non_Ack_Ratio_Mean = y.HARQ_Non_Ack_Ratio_Mean,
HSDPA_SCC_Att = y.HSDPA_SCC_Att,
E_DCH_Selections = y.E_DCH_Selections,
HSUPA_Res_Acc_NRT = y.HSUPA_Res_Acc_NRT,
HSUPA_Res_Retain_NRT = y.HSUPA_Res_Retain_NRT,
HSUPA_Res_Retain_RT = y.HSUPA_Res_Retain_RT,
HSUPA_Att = y.HSUPA_Att,
HSUPA_SR = y.HSUPA_SR,
HSUPA_MAC_es_Data_Vol_RNC = y.HSUPA_MAC_es_Data_Vol_RNC,
HSUPA_MAC_es_BLER = y.HSUPA_MAC_es_BLER,
E_DCH_HARQ_Non_Ack_Ratio = y.E_DCH_HARQ_Non_Ack_Ratio,
HSUPA_SCC_Att = y.HSUPA_SCC_Att,
AVG_CS_Traffic = y.AVG_CS_Traffic,
Inc_SMS_Att = y.Inc_SMS_Att
};
Chart1.DataSource = q;
Chart1.Series[0].XValueMember = "PeriodStartTime";
Chart1.Series[0].YValueMembers = HiddenFieldSeries1.Value.ToString();
Chart1.Series.Add(HiddenFieldSeries2.Value);
Chart1.Series[1].XValueMember = "PeriodstartTime2";
Chart1.Series[1].YValueMembers = HiddenFieldSeries2.Value.ToString();
}
}
我们可以简化Linq选择新代码吗？虽然我只需要4列.. :(
答案 0 :(得分：1)
就你的评论/标签而言，你的问题没有多大意义，所以我做了最好的猜测：
DDLLessons.DataSource = lesson;
DDLLessons.DataBind();
var query = from x in db.Scores
where x.StudentName == DDLStudentName.SelectedItem.Value
select new {
Day = x.Day,
Class = DDLLessons.SelectedItem.Value
};
答案 1 :(得分：0)
您是否正在寻找使用字符串动态选择表名（这是我所理解的）。如果是，请查看此内容并从字符串中选择表对象：
How can I dynamically select my Table at runtime with Dynamic LINQ
从上面的链接中，这是与您相关的内容：
'' get the table from a type (which corresponds to a table in your database) Dim typeName = "DatabaseTest.AdventureWorks." & tableName & ", DatabaseTest" Dim entityType = Type.GetType(typeName) Dim table = dc.GetTable(entityType) Dim query As IQueryable = table
（代码归功于我提供的链接上答案的原始海报）
更新： C＃版代码：
// get the table from a type (which corresponds to a table in your database) string typeName = "DatabaseTest.AdventureWorks." + tableName + ", DatabaseTest"; Type entityType = Type.GetType(typeName); object table = dc.GetTable(entityType); IQueryable query = table as IQueryable;