AJAX 请求不适用于路由 C#
本文关键字:路由 适用于 不适用 请求 AJAX | 更新日期: 2023-09-27 18:37:08
我已经在我的ajax请求中包含以下内容:
$(function () {
$("#DropDownList1").change(function () {
alert($("#DropDownList1")[0].value);
$.ajax({
type: "POST",
url: '<%= Page.ResolveUrl("~/bikesearch.aspx/GetModels") %>',
data: '{id: "' + $("#DropDownList1")[0].value + '" }',
contentType: "application/json; charset=utf-8",
dataType: "text",
success: function (r) {
var ddlCustomers = $("[id*=DropDownList2]");
ddlCustomers.empty().append('<option selected="selected" value="0">Please select</option>');
$.each(r.d, function () {
ddlCustomers.append($("<option></option>").val(this['Value']).html(this['Text']));
});
}
});
});
});
以下是我的 Global.asax 文件的一部分的样子:
void Application_Start(object sender, EventArgs e)
{
RegisterRoutes(RouteTable.Routes);
}
static void RegisterRoutes(RouteCollection routes)
{
routes.MapPageRoute("", "bikesearch/{Manufacturer}", "~/bikesearch.aspx");
routes.MapPageRoute("", "bikesearch/{Manufacturer}/{Model}", "~/bikesearch.aspx");
}
以下是我的网络方法返回的内容:
[System.Web.Services.WebMethod]
public static List<ListItem> GetModels(int id)
{
connection conn = new connection();
string query = "SELECT Id, Model FROM Model where Manufacturer_Id = " + id;
using (SqlConnection con = new SqlConnection(conn.GetConnectionString()))
{
using (SqlCommand cmd = new SqlCommand(query))
{
List<ListItem> customers = new List<ListItem>();
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
con.Open();
using (SqlDataReader sdr = cmd.ExecuteReader())
{
while (sdr.Read())
{
customers.Add(new ListItem
{
Value = sdr["Id"].ToString(),
Text = sdr["Model"].ToString()
});
}
}
con.Close();
return customers;
}
}
}
尝试在 bikesearch.aspx 页面上触发 AJAX 请求时,请求失败。我可能做错了什么?任何帮助表示赞赏。
我注意到下面的网络方法在只返回一个字符串时工作正常:
[System.Web.Services.WebMethod]
public static string ebulten_Add()
{
return "test";
}
啊哈,你的最后一条评论帮助了我,如果你想把它传递给 Ajax 请求,你必须将你的对象序列化为 Json
:
JsonSerializerSettings settings = new JsonSerializerSettings();
settings.Converters.Add(new ListCompactionConverter());
settings.Formatting = Formatting.Indented;
var result = JsonConvert.SerializeObject(customers,settings);
return(result);