如何使用ajax从委托使用MVC控制器获取结果 [英] how to get a result from MVC controller with delegate using ajax
问题描述
我很难从我的控制器获取结果,它有一个包含委托函数passint作为参数的函数。
所以结果它是空的,然后在完成后返回。
HTLM
I'm having a tough time getting the result from my controller, it has a function that contains a delegate funciont passint as a parameter.
so the result is awais empty and then goes back after its finished.
HTLM
<label>Name:</label>
<input id="txtName" type="text" />
<label>lastName:</label>
<input id="txtlastName" type="text" />
<pre lang="HTML"></pre><button onclick="SayHello()">HELLO</button>
JS
JS
function SayHello() {
alert("Início");
var user = CaptureElements();
var json = JSON.stringify(user);
var url = '@Url.Action("SayHello&", "Home")';
$.ajax({
url: url,
async: false,
data: json,
type: 'POST',
contentType: 'application/json',
dataType: 'json',
success: function (data) {
$("#aaa")[0].innerHTML = data;
alert(data);
}
});
function CaptureElements() {
var name = document.getElementById("txtName").value;
var lastname = document.getElementById("txtlastName").value;
return (name == "" ? null : { name: name, lastname: lastname })
}
C#
C#
[HttpPost]
public ActionResult SayHello(Usuario user)
{
var Proxy = content();
string hello= "";
Proxy.SayHello(user.name.ToString(), user.lastName.ToString(),
(String result) =>
{
hello= result;
}, ExceptionCallback);
return Json(hello);
}
CSharp / DataSnap
下面的代理类是由delphi xe5数据快照项目生成的。
CSharp / DataSnap
The "Proxy" class below was generated by delphi xe5 data snap project.
/**
* @param FirstName [in] - Type on server: string
* @param LastName [in] - Type on server: string
* @return result - Type on server: string
*/
public delegate void SayHelloCallback(String Result);
public void SayHello(String FirstName, String LastName, SayHelloCallback callback = null, ExceptionCallback ExCal = null)
{
DSRESTCommand cmd = getConnection().CreateCommand();
cmd.setRequestType(DSHTTPRequestType.GET);
cmd.setText("TServerMethods1.SayHello");
cmd.prepare(get_TServerMethods1_SayHello_Metadata());
InternalConnectionDelegate SayHelloDel = () =>
{
if (callback != null)
{
try
{
callback.DynamicInvoke(cmd.getParameter(2).getValue().GetAsString());
}
catch (Exception ex)
{
if (ExCal != null) getConnection().syncContext.Send(new SendOrPostCallback(x => ExCal.DynamicInvoke(ex.InnerException)), null);
else getConnection().syncContext.Send(new SendOrPostCallback(x => BaseExCal.DynamicInvoke(ex.InnerException)), null);
}
}
};
cmd.getParameter(0).getValue().SetAsString(FirstName);
cmd.getParameter(1).getValue().SetAsString(LastName);
getConnection().execute(cmd, this, SayHelloDel, ExCal);
}
我真的很感激任何帮助!
谢谢。
I would really appreciate any help!
Thanks.
推荐答案
.ajax({
url:url,
async: false ,
数据:json,
类型:' POST',
contentType:' application / json',
dataType: json',
成功: function (数据){
.ajax({ url: url, async: false, data: json, type: 'POST', contentType: 'application/json', dataType: 'json', success: function (data) {
( #aaa)[< span class =code-digit> 0 ]。innerHTML = data;
alert(data);
}
});
function CaptureElements(){
var name = document .getElementById( txtName)值;
var lastname = document .getElementById( txtlastName)。value;
return (name == ? null :{name:name,lastname:lastname})
}
("#aaa")[0].innerHTML = data; alert(data); } }); function CaptureElements() { var name = document.getElementById("txtName").value; var lastname = document.getElementById("txtlastName").value; return (name == "" ? null : { name: name, lastname: lastname }) }
C#
C#
[HttpPost]
public ActionResult SayHello(Usuario user)
{
var Proxy = content();
string hello= "";
Proxy.SayHello(user.name.ToString(), user.lastName.ToString(),
(String result) =>
{
hello= result;
}, ExceptionCallback);
return Json(hello);
}
CSharp / DataSnap
下面的代理类是由delphi xe5数据快照项目生成的。
CSharp / DataSnap
The "Proxy" class below was generated by delphi xe5 data snap project.
/**
* @param FirstName [in] - Type on server: string
* @param LastName [in] - Type on server: string
* @return result - Type on server: string
*/
public delegate void SayHelloCallback(String Result);
public void SayHello(String FirstName, String LastName, SayHelloCallback callback = null, ExceptionCallback ExCal = null)
{
DSRESTCommand cmd = getConnection().CreateCommand();
cmd.setRequestType(DSHTTPRequestType.GET);
cmd.setText("TServerMethods1.SayHello");
cmd.prepare(get_TServerMethods1_SayHello_Metadata());
InternalConnectionDelegate SayHelloDel = () =>
{
if (callback != null)
{
try
{
callback.DynamicInvoke(cmd.getParameter(2).getValue().GetAsString());
}
catch (Exception ex)
{
if (ExCal != null) getConnection().syncContext.Send(new SendOrPostCallback(x => ExCal.DynamicInvoke(ex.InnerException)), null);
else getConnection().syncContext.Send(new SendOrPostCallback(x => BaseExCal.DynamicInvoke(ex.InnerException)), null);
}
}
};
cmd.getParameter(0).getValue().SetAsString(FirstName);
cmd.getParameter(1).getValue().SetAsString(LastName);
getConnection().execute(cmd, this, SayHelloDel, ExCal);
}
我真的很感激任何帮助!
谢谢。
I would really appreciate any help!
Thanks.
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