如何解决使用以下详细信息创建 Asp.Net Web 应用程序：
我有一个问题，那就是我做了一个 List 并将 Value 和 Text 放入其中，但问题是当我尝试从List 它只从列表中获取 ViewBag 并存储它，但我无法通过从 Value 调用 Text 来获取 List。这是我的代码：
ViewBag 类（模型）：
Departmentusing System.ComponentModel.DataAnnotations;
using System.Web.Mvc;
namespace Project_List.Models
{
public class Department
{
public int DepartmentID { get; set; }
[display(Name = "Select Department")]
public string Name { get; set; }
public List<SelectListItem> getDepartmentList()
{
return new List<SelectListItem>
{
new SelectListItem { Value = "1",Text = "Marketing"},new SelectListItem { Value = "2",Text = "Finance" },new SelectListItem { Value = "3",Text = "Operations Management" },new SelectListItem { Value = "4",Text = "IT" },new SelectListItem { Value = "5",Text = "Human Resource" }
};
}
public Employee employee { get; set; }
}
}
控制器代码
Employee使用 (ViewBag) 调用 [HttpPost]
public ActionResult Create(Employee employee,Department department)
{
//In case of Invalid user redirect to login
if (Session["login"] == null)
{
return RedirectToAction("Login","User");
}
if (ModelState.IsValid)
{
EmployeeEntity entity = new EmployeeEntity();
DepartmentEntity entity1 = new DepartmentEntity();
int count = entity.insert(employee,department);
int count1 = entity1.insert(employee,department);
if (count > 0 && count1 > 0)
{
ViewBag.successMessage = "Data insterted Successfully !";
}
ModelState.Clear();
}
ViewBag.DepartmentsList = getDepartmentList();
return View();
}
private List<SelectListItem> getDepartmentList()
{
List<SelectListItem> departmentList = new
Department().getDepartmentList();
return departmentList;
}
：
ListViewBag.DepartmentsList = getDepartmentList();
视图：
Create现在的问题是，每当我尝试将以下数据保存到数据库中时，它只会在数据库中存储 <!DOCTYPE html>
<html>
<head>
<Meta name="viewport" content="width=device-width" />
<link href="~/Content/bootstrap.min.css" rel="stylesheet" />
<title>Employee information</title>
</head>
<body>
@using (Html.BeginForm("Create","Employee"))
{
<div class="h4">
@Html.ActionLink("Back to Main Page","Index")
</div>
<div class="form-horizontal">
<h4 class="h1 text-center">Employee information</h4>
<hr />
<div class="form-group">
@Html.LabelFor(model => model.EmployeeID,htmlAttributes:
new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.EmployeeID,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.EmployeeID,"",new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.FirstName,htmlAttributes:
new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.FirstName,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.FirstName,new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.LastName,htmlAttributes:
new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.LastName,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.LastName,new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Gender,htmlAttributes: new
{ @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Gender,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Gender,new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.EmailAddress,htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.EmailAddress,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model =>
model.EmailAddress,new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.City,htmlAttributes: new {
@class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.City,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.City,new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Salary,htmlAttributes: new
{ @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Salary,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Salary,new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Age,htmlAttributes: new {
@class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Age,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Age,new
{ @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.EducationLevel,htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.EducationLevel,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model =>
model.EducationLevel,new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.HireDate,htmlAttributes:
new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.HireDate,new {
htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.HireDate,new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.department.Name,htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.DropDownListFor(x => x.department.DepartmentID,(List<SelectListItem>)ViewBag.DepartmentsList)
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btndefault" />
</div>
</div>
</div>
}
</body>
</html>
而不是 Value，这里是插入数据库的代码：
Text 类（模型）：
Employeepublic class Employee
{
public int EmployeeID { get; set; }
[required]
public string FirstName { get; set; }
public string LastName { get; set; }
[required]
public string Gender { get; set; }
[required]
[Range(20,60,ErrorMessage = "Age must be between 20 and 60")]
[display(Name = "Age")]
public int Age { get; set; }
[required]
[display(Name = "Education Level")]
public int EducationLevel { get; set; }
[Range(25000,500000,ErrorMessage = "Please enter correct value")]
[required]
/* We can control the display of data in a View (UI) using
display attributes */
[display(Name = "Salary")]
public int Salary { get; set; }
[required]
[EmailAddress]
public string EmailAddress { get; set; }
[required(ErrorMessage = "Please enter hire date")]
[display(Name = "Hire Date")]
[CustomHireDate(ErrorMessage = "Hire Date must be less than or equal to Today's Date")]
[DataType(DataType.Date)]
public DateTime? HireDate { get; set; }
public string City { get; set; }
public Department department { get; set; }
}
（类）：
EmployeeEntity string ConnectionString = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
sqlConnection sqlConnection = null;
sqlCommand cmd = null;
public int insert(Employee employee,Department department)
{
int effectedRows = 0;
try
{
sqlConnection = new sqlConnection(ConnectionString);
string query = @"insert into Employee(EmployeeID,FirstName,LastName,Gender,Age,EducationLevel,Salary,EmailAddress,HireDate,City,DepartmentID) values('" + employee.EmployeeID + "','" + employee.FirstName + "','" + employee.LastName + "','"
+ employee.Gender + "','" + employee.Age + "','" + employee.EducationLevel + "','" + employee.Salary + "','"
+ employee.EmailAddress + "','" + employee.HireDate + "','" + employee.City + "','"
+ employee.department.DepartmentID + "')";
sqlConnection.open();
cmd = new sqlCommand(query,sqlConnection);
effectedRows = cmd.ExecuteNonQuery();
sqlConnection.Close();
return effectedRows;
}
catch (Exception exp)
{
return effectedRows;
}
}
（类）：
DepartmentEntity数据库 ( string ConnectionString = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
sqlConnection sqlConnection = null;
sqlCommand cmd = null;
public int insert(Employee employee,Department department)
{
int effectedRows = 0;
try
{
sqlConnection = new sqlConnection(ConnectionString);
string query = @"insert into Department(DepartmentID,Name) values('"
+ employee.department.DepartmentID + "','" + department.Name + "')";
sqlConnection.open();
cmd = new sqlCommand(query,sqlConnection);
effectedRows = cmd.ExecuteNonQuery();
sqlConnection.Close();
return effectedRows;
}
catch (Exception exp)
{
return effectedRows;
}
}
) 输出：
正如您在 Department 表的输出中所见，当我尝试插入 Department 表时，名称未从列表中存储。我无法弄清楚这个问题，感谢任何可以解决这个问题的帮助。
数据库（Department 表）：
数据库（Employee 表）：
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