【发布时间】：2022-01-15 19:11:06
【问题描述】：
我是 ASP.NET 的新手，但已经做了 20 年的桌面开发。我有一个Customer 类，字段为CustId, CustName, CustNotes。
我有一个名为CustView 的视图，其中包含一些输入框，这些输入框将使用CustID 预先填充上一个视图中的客户详细信息。
我可以在文本框中显示客户详细信息，但无法将用户编辑的文本框（即用户更改客户名称）返回到操作中的存储过程。
我使用名为Cust1DBHandle 的DB 类来调用存储过程。我设置了 3 个按钮和 3 个操作，以通过传递变量或使用 RequestString 使它们中的任何一个工作，但没有任何作用。
-
问题 #1：如何将新文本值作为全局变量、操作中的变量或使用数据模型传回？
-
问题 #2：在
CustViewDBHandle中，我填充了结果列表。如果只针对一行数据，这样做是否正确？ -
问题#3：当按下执行存储过程的SAVE按钮时，控制器中的动作是否必须有return？
谢谢。
Cust.cs 模型
public partial class Cust
{
[DisplayName("Cust ID")]
public Int32 CustID { get; set; }
[DisplayName("Customer Name")]
// [Required(ErrorMessage = "This field is required")]
public string CustName { get; set; }
[DisplayName("Customer Notes")]
public string CustNotes { get; set; }
public string ErrorMessageCust { get; set; }
}
CustView.cshtml:
@model IEnumerable<App22.Models.Cust>
@{
ViewBag.Title = "CustView";
}
<h2>@ViewBag.Title.</h2>
<h3>@ViewBag.Message</h3>
<header>
</header>
<meta name="viewport" content="width=device-width" />
<title>CustViewy</title>
<html>
<head>
</head>
<style>
th, td {
padding: 5px;
}
</style>
<body>
<p>
</p>
<p>CUSTOMER DETAILS ARE HERE</p>
<form name="1" method="post">
<fieldset>
<legend>Headline Details</legend>
<table>
@foreach (var item in Model)
{
<tr>
<td>
<label for="CustID">CustID:</label>
</td>
<td>
<input type="text" name="1CustID" value="@Html.DisplayFor(modelItem =>
item.CustID)" />
</td>
</tr>
<tr>
<td>
<label for="CustName">CustName:</label>
</td>
<td>
<input type="text" name="2CustName" value="@Html.DisplayFor(modelItem
=> item.CustName)" />
</td>
</tr>
<td>
<label for="CustNotes">Cust Notes:</label>
</td>
<td>
<input type="text" name="3CustNotes" value="@Html.DisplayFor(modelItem =>
item.CustNotes)" />
</td>
<tr>
<td></td>
<td>
<input type="submit" name="action:Save1" value="Save" />
<button style="background-color:red" type="button" name="tree0"
class="btn btn-primary" onclick="location.href='@Url.Action("SaveCust0","Cust1")'">
SAVE0 »
</button>
<button style="background-color:blue" type="button" name="tree1"
class="btn btn-primary" onclick="location.href='@Url.Action("SaveCust1","Cust1",new { CustyIDSave = item.CustID , CustyNameSave = item.CustName })'">
SAVE1 »
</button>
<button style="background-color:green" type="button" name="tree2" class="btn btn-primary" onclick="location.href='@Url.Action("SaveCust2","Cust1")'">
SAVE2 »
</button>
</td>
<td>
</td>
</tr>
}
</table>
</fieldset>
</form>
</body>
</html>
Cust1Controller.cs:
public class Cust1Controller : Controller
{
public ActionResult SaveCust0()
{
string message = "";
message = Request.Form["CustName"].ToString();
return Content(message);
CustViewDBHandle dbhandle = new CustViewDBHandle();
ModelState.Clear();
dbhandle.SaveCust(Convert.ToInt32(Request.Form["CustID"]),
Request.Form["CustName"].ToString());
}
public ActionResult SaveCust1(int CustyIDSave, string CustyNameSave)
{
CustViewDBHandle dbhandle = new CustViewDBHandle();
ModelState.Clear();
dbhandle.SaveCust(CustyIDSave, CustyNameSave);
return null;
}
[HttpPost]
public ActionResult SaveCust2(int CustyIDSave, string CustyNameSave)
{
CustViewDBHandle dbhandle = new CustViewDBHandle();
ModelState.Clear();
dbhandle.SaveCust(CustyIDSave, CustyNameSave);
return null;
}
// GET: Cust1
public ActionResult Index()
{
Cust1DBHandle dbhandle = new Cust1DBHandle();
ModelState.Clear();
return View("~/Views/Cust/Cust1.cshtml",dbhandle.GetCust(""));
// return View("~/Views/Cust/Cust1.cshtml"); //This works
}
[HttpGet]
public ActionResult Reload(string tree)
{
//tree = "Breaker2";
Cust1DBHandle dbhandle = new Cust1DBHandle();
ModelState.Clear();
return View("~/Views/Cust/Cust1.cshtml", dbhandle.GetCust(tree));
//Cust1DBHandle dbhandle = new Cust1DBHandle();
//ModelState.Clear();
//return View("~/Views/Cust/Cust1.cshtml", dbhandle.GetCust(SearchBy));
// return View("~/Views/Cust/Cust1.cshtml"); //This works
}
public ActionResult ViewCust(int CustyIDView)
{
//tree = "Breaker2";
CustViewDBHandle dbhandle = new CustViewDBHandle();
ModelState.Clear();
return View("~/Views/Cust/CustView.cshtml", dbhandle.GetCust(CustyIDView));
//Cust1DBHandle dbhandle = new Cust1DBHandle();
//ModelState.Clear();
//return View("~/Views/Cust/Cust1.cshtml", dbhandle.GetCust(SearchBy));
// return View("~/Views/Cust/Cust1.cshtml"); //This works
}
}
CustViewDBHandle.cs:
public class CustViewDBHandle
{
// ********** VIEW CUSTOMER DETAILS ********************
public List<Cust> GetCust(int CustyID)
{
GlobalVar.connection();
List<Cust> CustyChosen = new List<Cust>();
SqlCommand cmd = new SqlCommand("psv_CustView1", GlobalVar.con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@CustyID", CustyID);
SqlDataAdapter sd = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
GlobalVar.con.Open();
sd.Fill(dt);
GlobalVar.con.Close();
foreach (DataRow dr in dt.Rows)
{
CustyChosen.Add(
new Cust
{
CustID = Convert.ToInt32(dr["CustID"]),
CustName = Convert.ToString(dr["CustName"]),
CustNotes = Convert.ToString(dr["CustNotes"]),
});
GlobalVar.GlobCustName1 = Convert.ToString(dr["CustName"]); //This method uses
Global Var to get data to pass to form. Can pass anything that way.
}
return CustyChosen;
}
public int SaveCust(int CustyID, string CustyName)
{
GlobalVar.connection();
SqlCommand cmd = new SqlCommand("psu_CustSave1", GlobalVar.con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@CustyID", CustyID);
cmd.Parameters.AddWithValue("@CustyName", CustyName);
GlobalVar.con.Open();
cmd.ExecuteNonQuery();
//SqlDataAdapter sd = new SqlDataAdapter(cmd);
//DataTable dt = new DataTable();
//sd.Fill(dt);
GlobalVar.con.Close();
return 1;
}
}
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标签： c# asp.net-mvc