Question

我有一个自动完成文本框，我需要获取所有特定学位和学期的学生，因为这是收集degreeId并将其存储在全局声明的变量中并且正在收集学期，现在我需要通过自动完成文本框值，degreeId和semester ....为此我试着调用我的webservice，

$("#txtStudents").autocomplete({

        source: function (request, response) {
        $.ajax({
            type: "POST",
            url: "/DataService.asmx/SearchStudents",
            contentType: "application/json; charset=utf-8",

           data: "{ 'searchTerm': '"+ JSON.stringify($("#txtStudents").val())+ "','degreeId': '"+JSON.stringify(degreeId)+"','semester': '"+JSON.stringify($("#ddlSemester :selected").text())+"'}",

            dataType: "json",
            success: function (data) {

我在webservice中收到此调用，

public string SearchStudents(string searchTerm, string degreeId, string semester)
{}

我有一个课程来获取特定学期和特定学位的学生详细信息，如

public class SearchStudents : List<SearchStudent>
{
    DataAccess.Entities buDateEntities = new DataAccess.Entities();

    public SearchStudents(string searchTerm)
    {
        //int sem = Convert.ToInt32(semester);
        //int degree = Convert.ToInt32(degreeId);

        foreach (DataAccess.Student student in buDateEntities.Students.Where(s => s.IsDeleted == false
                                                                            // && s.DegreeId==degree
                                                                             //&& s.CurrentSemester==semester
                                                                             && ((s.FirstName.IndexOf(searchTerm) == 0 || s.MiddleName.IndexOf(searchTerm) == 0 || s.LastName.IndexOf(searchTerm) == 0)
                                                                               )|| s.USN.IndexOf(searchTerm) == 0).OrderBy(s => s.FirstName).Take(5))
        {
            this.Add(new SearchStudent(student.StudentId
                                    , student.FirstName
                                    , student.MiddleName
                                    , student.LastName
                                    , student.Photo
                                    , student.USN
                                    , student.Email
                                    , student.Mobile));
        }            
    }
}

如何从网络服务中调用（我需要传递searchTerm，degreeId，semester）这个类....

Answer 1

...

data: {
    searchTerm : $("#txtStudents").val(),
    degreeId   : degreeId,
    semester   : $("#ddlSemester :selected").text()
},

...

以这种方式定义它应该有效

Answer 2

data: {
    searchTerm : $("#txtStudents").val(),
    degreeId   : degreeId,
    semester   : $("#ddlSemester :selected").text()
},

将服务器函数参数转换为字符串，正如我所看到的那样，你正在传递字符串，并且在参数中你有int。

public string SearchStudents(string searchTerm, string degreeId, string semester)

注意：如果Json.Stringify所有参数都更好。

从jquery传递三个参数

2 个答案: