我正在尝试将参数从AJAX传递到我的[WebMethod]，这样我就可以根据用户提供的ID返回SP的结果。
我遇到的问题是，只要我将参数名称添加到[WebMethod]，我的控制器就不再被调用，这让我觉得我必须错误地编写[WebMethod]。
首先我们有HTML / AJAX，它没有问题，但返回所有数据库结果：
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="Scripts/jquery-3.1.1.min.js"></script>
<script>
$(document).ready(function() {
$('#btnGetAllStudent').on('click', function() {
var StudentID = $("#StudentID").val();
$.ajax({
type: "POST",
url: "StudentTest.aspx/getAllStudent",
data: {"StudentID": StudentID},
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
$('#divStudentContainer').html('');
$.each(msg.d, function (index, item) {
studentIdElement = $('<span></span>').html(item.StudentId);
firstNameElement = $('<span></span>').html(item.FirstName);
lastNameElement = $('<span></span>').html(item.LastName);
courseIdElement = $('<span></span>').html(item.CourseId);
$('#StudentName').val(item.StudentName);
$('#CourseName').val(item.CourseName);
$('#PhoneNo').val(item.PhoneNo);
$('#PhoneType').val(item.PhoneType);
$('#CourseStartDate').val(item.CourseStartDate);
$('#CourseEndDate').val(item.CourseEndDate);
$('#CourseDuration').val(item.CourseDuration);
$('#Remaining').val(item.Remaining);
$('#Elapsed').val(item.Elapsed);
});
},
error: function (msg) {
console.log(msg.responseText);
}
});
});
});
</script>
</head>
<body>
<input type="button" id="btnGetAllStudent"
name="btnGetAllStudent" value="Get All Students" />
<div id="divStudentContainer"></div>
<p>Enter StudentID:</p>
<input type="text" id="StudentID" /> <br /><br />
<p>StudentName:</p>
<input type="text" id="StudentName" /> <br />
<p>CourseName:</p>
<input type="text" id="CourseName" /> <br />
<p>PhoneNo:</p>
<input type="text" id="PhoneNo" /> <br />
<p>PhoneType:</p>
<input type="text" id="PhoneType" /> <br />
<p>CourseStartDate:</p>
<input type="text" id="CourseStartDate" /> <br />
<p>CourseEndDate:</p>
<input type="text" id="CourseEndDate" /> <br />
<p>CourseDuration:</p>
<input type="text" id="CourseDuration" /> <br />
<p>Remaining:</p>
<input type="text" id="Remaining" /> <br />
<p>Elapsed:</p>
<input type="text" id="Elapsed" /> <br />
</body>
</html>
接下来我的[WebMethod]：
namespace Student
{
public partial class StudentTest : System.Web.UI.Page
{
[WebMethod]
public static List<object> getAllStudent(int StudentID)
{
StudentManager studentManager = new StudentManager();
List<object> studentList = new List<object>();
studentList = studentManager.getAllStudent();
return studentList;
}
And finally my controller:
namespace Student.StudentManagement.Domain
{
public class StudentManager
{
public List<object> getAllStudent()
{
List<object> studentList = new List<object>();
object student;
SqlConnection conn = new SqlConnection();
conn.ConnectionString = WebConfigurationManager.ConnectionStrings["StudentDB"].ToString();
SqlCommand cmd = new SqlCommand("[dbo].[GetStudentData]", conn);
cmd.Parameters.Add("StudentID", SqlDbType.Int);
SqlDataAdapter da = new SqlDataAdapter();
DataSet ds = new DataSet();
cmd.Connection = conn;
da.SelectCommand = cmd;
conn.Open();
da.Fill(ds, "StudentData");
conn.Close();
foreach(DataRow dr in ds.Tables["StudentData"].Rows)
{
student = new
{
StudentName = dr["StudentName"].ToString(),
CourseName = dr["CourseName"].ToString(),
PhoneNo = dr["PhoneNo"].ToString(),
PhoneType = dr["Name"].ToString(),
CourseStartDate = dr["CourseStartDate"].ToString(),
CourseEndDate = dr["CourseEndDate"].ToString(),
CourseDuration = dr["CourseDuration"].ToString(),
Remaining = dr["Remaining"].ToString(),
Elapsed = dr["Elapsed"].ToString()
};
studentList.Add(student);
}
return studentList;
}
}
}
如果有人能指出我正确的方向，我会感激不尽，因为我花了好几个小时无处可去，所有这些都发生在我调用函数btnGetAllStudents网页冻结时。
**更新 - 对于缓慢的回复道歉，我的主板已经死了，我不得不按要求建造一台新的PC，SP：
USE [StudentRecords]
GO
/****** Object: StoredProcedure [dbo].[GetStudentData] Script Date: 29/01/2017 16:12:27 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: DB
-- Create date: 02/01/2017
-- Description: Return all students data
-- =============================================
ALTER PROCEDURE [dbo].[GetStudentData]
@StudentID INT
AS
BEGIN
SELECT ([S].[FirstName] + ' ' + [S].[LastName]) AS 'StudentName'
,[C].[CourseName]
,[P].[PhoneNo]
,[PT].[Name]
,[C].[CourseStartDate]
,[C].[CourseEndDate]
,CAST(DATEDIFF(MM,[C].[CourseStartDate],[C].[CourseEndDate])
AS NVARCHAR(20)) + ' ' + 'Months' AS 'CourseDuration'
,CAST(DATEDIFF(MM,GETDATE(),[C].[CourseEndDate])
AS NVARCHAR(20)) + ' ' + 'Months Remaining' AS 'Remaining'
,CAST(DATEDIFF(MM,[C].[CourseStartDate], GETDATE())
AS NVARCHAR(20)) + ' ' + 'Months Passed' AS 'Elapsed'
FROM [dbo].[Student] [S]
INNER JOIN [dbo].[Course] [C] ON [C].[CourseID] = [S].CourseID
INNER JOIN [dbo].[Phone] [P] ON [P].[OwnerID] = [S].[StudentID]
INNER JOIN [dbo].[PhoneType] [PT] ON [PT].[PhoneTypeID] = [P].[PhoneTypeID]
WHERE [StudentID] = @StudentID
SET NOCOUNT ON;
END
谢谢， 丹尼