Question

我正在使用API的MVC应用程序，我想从API调用一个方法，以便它将数据加载到组合框。我不知道如何解决这个问题，因为我是新手。

感谢。

来自获得此功能的API的

ClaimController函数。

[RoutePrefix("api/Claim")]
[Route("GetScheme")]
[HttpGet]
public HttpResponseMessage GetScheme()
{
    try
    {

        using (IBusinessLogic logic = new BusinessLogic.Implementation.BusinessLogic())
        {
            Request.Headers.Clear();
            var tmpresults = logic.GetScheme();
            var results = (from x in tmpresults.Result select new { text = x.Description, value = x.Id }).ToArray();
            var response = Newtonsoft.Json.JsonConvert.SerializeObject(results);
            return Request.CreateResponse(HttpStatusCode.OK, results);
        }
    }
    catch (Exception ex)
    {
        return Request.CreateResponse(HttpStatusCode.BadRequest, ex);
    }
}

来自客户端的视图，即UI 我想从API调用该函数将数据加载到组合框

    function GetAllScheme() {
    var select = $("#ddlScheme");

    $.ajax({

        type: "GET",
        url: "http://localhost:55393/_Api/Claim",

        dataType: "json",
        success: function (data) {
            debugger;
            var datavalue = data;
            var serverResponse = datavalue;
            contentType: "application/json";
            $.each(serverResponse, function (i, serverResponse)
            {
                select.append("<option value='" + serverResponse.Description + "'>" + serverResponse.Description + "</option>")

            });

        },
        error: function (xhr) {
            alert(xhr.responseText);
        }
    });
}

下拉

<select class="dropdown form-control input-xs required" id="ddlScheme" onclick="GetAllScheme()(this)">
                                                                 <select 
                                                                </select>
                                                            </div>

Answer 1

获得服务器响应后，必须将选项元素附加到select（下拉）元素中。像这样：

    function GetAllScheme() {
        // get the dropwdown by its id
        var select = $("#ddlScheme");

        $.ajax({
            ...
            success: function (data) {
                $.each(myJsonObject, function (i, mobj) {
                    $("#Cartbl").append('<tr><td width="50px">' + mobj.Description + '</td></tr>');

                    // for each element, add an option into the dropdown
                    select.append('<option>"+ mobj.Description +"</option>')
                }
            });
            ...
        )}

请参阅jsfiddle https://jsfiddle.net/n4mtj9om/

Answer 2

如果使用Chrome进入开发人员工具，请查看服务器在服务器响应后如何设置断点的响应，因为可能会使用把这个

function GetAllScheme() {
      $.ajax({
        type: "GET",
        url: "http://localhost:32359/api/Claim",

        dataType: "json",
        success: function(data) {
          $.each(data.responseJSON, function(i, mobj) {
            $("#Cartbl").append('<tr><td width="50px">' + mobj.Description +
              '</td></tr>');
          });

        },
        error: function(xhr) {
          alert(xhr.responseText);
        }
      });

    }

如何从API填充数据并加载到下拉列表中

2 个答案: