两个下拉列表填充userform

Question

目前正在为我的工作场所开发一个成本核算的Web应用程序，我在用户表单的开头有两个下拉框，一个是班级（150,300，....）＆amp;一个是管道尺寸（1“，2”，3“......），一旦用户选择”从标准尺寸中选择“指定了一个类和管道尺寸，我希望表格的其余部分使用存储在我的模型表中的尺寸。

以下是视图的代码，我希望自动填充kamm id，kamm od，spacer id ectttt以及用户选择中指定的正确尺寸，例如用户选择1“150，其中表数据中有一个kamm id为15mm，然后我想将其自动输入用户表单。

    @model IEnumerable<WebApplication4.Models.CoreSheets>

@{
    ViewBag.Title = "Iflexcst";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

@Scripts.Render("~/bundles/jqueryui")






@using (Html.BeginForm("Iflexcst", "Costing", FormMethod.Post))
{


        <h2>Enter Dimensions:</h2>

    <h5>
       Select From Standard Sizes:
    </h5> @Html.CheckBox("Standard", false);

        <br>
    <h5> Select Class: </h5>  <br>
  @Html.DropDownList("Class", ViewData["class"] as List<SelectListItem>)
    <h5> Select Pipe: </h5> <br>
  @Html.DropDownList("Pipe", ViewData["pipe"] as List<SelectListItem>)
    <br>


            <br>
            <label for="NUM">Number of Sets:</label>
    <br>
            <input class="foo" id="NUM" type="text" value=@ViewBag.Quantity name="Quan" /> 

            <br>
    <br>
            <label for="KID">Kamm ID:</label>
    <br>
            <input class="foo" id="KID" type="text" value=@ViewBag.kammid name="kammid" />

    <br>
            <br><label for="KOD">Kamm OD:</label>
    <br>
            <input class="foo" id="KOD" type="text" value=@ViewBag.kammod name="kammod" />

            <br>
    <br>

            <label for="SID">Spacer Inner Dim:</label>
    <br>
            <input class ="foo" id="SID" type="text" name="SpacerInnerDim" value=@ViewBag.spacerid>
    <br>
             <br><label for="SOD">Spacer Outer Dim:</label>
    <br>
            <input class ="foo" id="SOD" type="text" name="SpacerOuterDim" value=@ViewBag.spacerod>
    <br>
            <br><label for="WOD">Washer Outer Dim:</label>
    <br>
            <input class="foo" id="WOD" type="text" name="WashOuterDim" value=@ViewBag.washod>
    <br>
             <br><label for="IWI">Isolating Washer ID:</label>
    <br>
             <input class="foo" id="IWI" type="text" name="IsoWashInnerDim" value=@ViewBag.isoid>
    <br>
            <br><label for="SWI">Steel Washer ID:</label>
    <br>
             <input class="foo" id="SWI" type="text" name="SteelWashInnerDim" value=@ViewBag.steelid>
    <br>
             <br>

        <h2>Enter Materials:</h2>
        <br>
        <h5> Kamm Core: </h5>  <br>
        @Html.DropDownList("selectedCore", (SelectList)ViewBag.CoreSheets);
        <br>
        <h5> Spacer Core:</h5>   <br>
        @Html.DropDownList("selectedSpacer", (SelectList)ViewBag.SpacerSheets);
        <br>
        <h5> Kamm and Space Facing: </h5>   <br>
        @Html.DropDownList("selectedFacing", (SelectList)ViewBag.FacingSheets);
        <br>
        <h5>Steel Washer Core: </h5>     <br>
        @Html.DropDownList("selectedSteelCre", (SelectList)ViewBag.CoreSheets);
        <br>
        <h5> Isolating Washer Core: </h5>  <br>
        <h5> Special:</h5>     @Html.CheckBox("Bought in ISO washers?", false);
        @Html.DropDownList("selectedIsoCre", (SelectList)ViewBag.CoreSheets);
        <br>
        <h5>Isolating Washer Facing: </h5>   <br>
        @Html.DropDownList("selectedIsoFacing", (SelectList)ViewBag.FacingSheets);
        <br>
        <h2>Washer and Sleeve Quantity and Prices:</h2>

        <br><label for="SWQ">Steel Washer Quantity:</label>
    <br>
    <input class="foo" id="SWQ" type="text" name="SteelWashQuan" value=@ViewBag.steelq>
        <br>    <br>

    <label for="IWQ">Isolating Washer Quantity:</label>
          <br>

    <input class="foo" id="IWQ" type="text" name="IsoWashQuan" value=@ViewBag.isoq>
        <br>

        <br>

    <label for="SQ">Sleeve Quantity:</label>
            <br>
    <input class="foo" id="SQ" type="text" name="SleeveQuan" value=@ViewBag.sleeveq>
        <br>

        <br>

    <label for="SP">Sleeve Price:</label>
     <br>
    <input class="foo" id="SP" type="text" name="SleevePrice" value=@ViewBag.sleevepr>
        <br>

        <br>


    <label for="IWP">Isolating Washer Price: </label>
         <br>
    <input class="foo" id="IWP" type="text" name="IsoPrice" value=@ViewBag.isopr>
        <br>

        <br>

                <label for="CS"> Cost</label>

        <br>
    <input class="foo" id="CS" type="number" value=@ViewBag.result />


                <input type="submit" value="Submit" />


}

        <br><br><br><br>

以下是我的模型的代码，我希望从一半，三十，六百等几个类中访问数据。

    using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;
using System.ComponentModel.DataAnnotations;
using System.Web.Mvc;

namespace WebApplication4.Models
{



    public class oneFifty
    {
        [Key]
        public int sizeID { get; set; }

        public int PipeSize { get; set; }

        public int KammID { get; set; }

        public int KammOD { get; set; }


        public int SpacerID { get; set; }

        public int SpacerOD { get; set; }
        public int WashersOD { get; set; }
        public int SteelWasherID { get; set; }
        public int IsoWasherID { get; set; }
        public int WasherQuan { get; set; }
        public int SleeveQuan { get; set; }

        public int FilamicSleeveCost { get; set; }

        public int G10SleeveCost { get; set; }
        public int G10WasherCost { get; set; }

    }



    public class threeHund
    {
        [Key]
        public int sizeID { get; set; }

        public int PipeSize { get; set; }



        public int KammID { get; set; }

        public int KammOD { get; set; }


        public int SpacerID { get; set; }

        public int SpacerOD { get; set; }
        public int WashersOD { get; set; }
        public int SteelWasherID { get; set; }
        public int IsoWasherID { get; set; }
        public int WasherQuan { get; set; }
        public int SleeveQuan { get; set; }

        public int FilamicSleeveCost { get; set; }

        public int G10SleeveCost { get; set; }
        public int G10WasherCost { get; set; }

    }
    public class sixHund
    {
        [Key]
        public int sizeID { get; set; }

        public int PipeSize { get; set; }


        public int KammID { get; set; }

        public int KammOD { get; set; }


        public int SpacerID { get; set; }

        public int SpacerOD { get; set; }
        public int WashersOD { get; set; }
        public int SteelWasherID { get; set; }
        public int IsoWasherID { get; set; }
        public int WasherQuan { get; set; }
        public int SleeveQuan { get; set; }

        public int FilamicSleeveCost { get; set; }

        public int G10SleeveCost { get; set; }
        public int G10WasherCost { get; set; }

    }
    public class nineHund
    {
        [Key]
        public int sizeID { get; set; }

        public int PipeSize { get; set; }


        public int KammID { get; set; }

        public int KammOD { get; set; }


        public int SpacerID { get; set; }

        public int SpacerOD { get; set; }
        public int WashersOD { get; set; }
        public int SteelWasherID { get; set; }
        public int IsoWasherID { get; set; }
        public int WasherQuan { get; set; }
        public int SleeveQuan { get; set; }

        public int FilamicSleeveCost { get; set; }

        public int G10SleeveCost { get; set; }
        public int G10WasherCost { get; set; }

    }

    public class fifteenhundred
    {
        [Key]
        public int sizeID { get; set; }

        public int PipeSize { get; set; }



        public int KammID { get; set; }

        public int KammOD { get; set; }


        public int SpacerID { get; set; }

        public int SpacerOD { get; set; }
        public int WashersOD { get; set; }
        public int SteelWasherID { get; set; }
        public int IsoWasherID { get; set; }
        public int WasherQuan { get; set; }
        public int SleeveQuan { get; set; }

        public int FilamicSleeveCost { get; set; }

        public int G10SleeveCost { get; set; }
        public int G10WasherCost { get; set; }

    }








    public class CoreSheetsDBContext : DbContext
    {


        public System.Data.Entity.DbSet<WebApplication4.Models.oneFifty> oneFifties { get; set; }

        public System.Data.Entity.DbSet<WebApplication4.Models.threeHund> threeHunds { get; set; }

        public System.Data.Entity.DbSet<WebApplication4.Models.sixHund> sixHunds { get; set; }

        public System.Data.Entity.DbSet<WebApplication4.Models.nineHund> nineHunds { get; set; }

        public System.Data.Entity.DbSet<WebApplication4.Models.fifteenhundred> fifteenhundreds { get; set; }


    }




}

如果你帮我拖动根据两个下拉选项从桌子上扔掉一个数据，我应该可以轻松完成其余的工作！

感谢您提前阅读和任何帮助，我需要更新原始问题的其他任何片段，

干杯

EDIT在

下添加了控制器选择列表代码

public ActionResult Iflexcst（）         {

        CoreSheetsDBContext db = new CoreSheetsDBContext();





        List<SelectListItem> ClassSize = new List<SelectListItem>();

        ClassSize.Add(new SelectListItem { Text = "Select Class", Value = "0" });

        ClassSize.Add(new SelectListItem { Text = "150", Value = "1" });

        ClassSize.Add(new SelectListItem { Text = "300", Value = "2" });

        ClassSize.Add(new SelectListItem { Text = "600", Value = "3" });

        ClassSize.Add(new SelectListItem { Text = "900", Value = "4" });

        ClassSize.Add(new SelectListItem { Text = "1500", Value = "5" });



        ViewData["class"] = ClassSize;

        List<SelectListItem> PipeSize = new List<SelectListItem>();

        PipeSize.Add(new SelectListItem { Text = "Select Pipe", Value = "0" });

        PipeSize.Add(new SelectListItem { Text = "0.5", Value = "1" });

        PipeSize.Add(new SelectListItem { Text = "0.75", Value = "2" });

        PipeSize.Add(new SelectListItem { Text = "1", Value = "3" });

        PipeSize.Add(new SelectListItem { Text = "1.25", Value = "4" });

        PipeSize.Add(new SelectListItem { Text = "1.5", Value = "5" });

        PipeSize.Add(new SelectListItem { Text = "2", Value = "6" });

        PipeSize.Add(new SelectListItem { Text = "2.5", Value = "7" });

        PipeSize.Add(new SelectListItem { Text = "3", Value = "8" });

        PipeSize.Add(new SelectListItem { Text = "4", Value = "9" });

        PipeSize.Add(new SelectListItem { Text = "5", Value = "10" });

        PipeSize.Add(new SelectListItem { Text = "6", Value = "11" });

        PipeSize.Add(new SelectListItem { Text = "8", Value = "12" });

        PipeSize.Add(new SelectListItem { Text = "10", Value = "13" });

        PipeSize.Add(new SelectListItem { Text = "12", Value = "14" });

        PipeSize.Add(new SelectListItem { Text = "14", Value = "15" });

        PipeSize.Add(new SelectListItem { Text = "16", Value = "16" });

        PipeSize.Add(new SelectListItem { Text = "18", Value = "17" });

        PipeSize.Add(new SelectListItem { Text = "20", Value = "18" });

        PipeSize.Add(new SelectListItem { Text = "24", Value = "19" });

        ViewData["pipe"] = PipeSize;



        return View(db.CoreSheets.ToList());
    }