C# 从JQuery在代码隐藏中调用方法

我正在尝试从Jquery在ASP.NET中执行一个方法

$.ajax({
        type: "POST",
        contentType: "application/json; charset=utf-8",
        url: "MyMessages.aspx?id=66&epslanguage=sv/test",
        data: "{}",
        dataType: "json",
        error: function(xhr, err) {
        alert("readyState: " + xhr.readyState + "\nstatus: " + xhr.status);
        alert("responseText: " + xhr.responseText);
            },
        success: function() {
            alert("it works" );
        }
    })

代码隐藏：

    [WebMethod]
    protected void test()
    {
        test.Text = "works";
    }

---

执行此操作时，我会收到错误消息redayState:4和状态200。我不明白这个问题。我对这一点很陌生。：）

数据：{}，

应该只是

数据：{}，

或者如果不使用就删除它，…

首先，您的方法应该是静态的和公共的 所以不是这个

   [WebMethod]
protected void test()
{
    test.Text = "works";
}

应该是

[WebMethod]
public static void test()
{
    test.Text = "works";
}

这是第一次修复 第二次您无法访问test.text 所以，如果你想确保它的工作，你可以 这样写吧

$.ajax({
    type: "POST",
    contentType: "application/json",
    url: "MyMessages.aspx/test",
    data: "{}",
    dataType: "json",
    error: function(xhr, err) {
    alert("readyState: " + xhr.readyState + "\nstatus: " + xhr.status);
    alert("responseText: " + xhr.responseText);
        },
    success: function() {
        alert("it works" );
        // and here use jQuery to set the control test
        $("#<%=test.ClientID%>".text("Works");
    }
})

和Ajax方法

   $.ajax({
    type: "POST",
    contentType: "application/json",
    url: "MyMessages.aspx/test",
    data: "{}",
    dataType: "json",
    error: function(xhr, err) {
    alert("readyState: " + xhr.readyState + "\nstatus: " + xhr.status);
    alert("responseText: " + xhr.responseText);
        },
    success: function() {
        alert("it works" );
        // and here use jQuery to set the control test
        $("#<%=test.ClientID%>".text("Works");
    }
})

我希望它能帮助你 地址+“}”

欢迎访问SO，请访问可能的副本

   $.ajax({
    type: "POST",
    contentType: "application/json",
    url: "MyMessages.aspx/test",
    data: "{}",
    dataType: "json",
    error: function(xhr, err) {
    alert("readyState: " + xhr.readyState + "\nstatus: " + xhr.status);
    alert("responseText: " + xhr.responseText);
        },
    success: function() {
        alert("it works" );
        // and here use jQuery to set the control test
        $("#<%=test.ClientID%>".text("Works");
    }
})

    '{"fname":"' + fname + '","lname":"' + lname + '","email":"' + email + '","address":"' +