C# edge.js在windows窗体下没有响应
以下给出了1-2秒后的结果:C# edge.js在windows窗体下没有响应,c#,async-await,edgejs,C#,Async Await,Edgejs,以下给出了1-2秒后的结果: [STAThread] static void Main() { // Application.EnableVisualStyles(); // Application.SetCompatibleTextRenderingDefault(false); //
[STAThread]
static void Main()
{
// Application.EnableVisualStyles();
// Application.SetCompatibleTextRenderingDefault(false);
// Application.Run(new Form1());
Task mainTask = MainAsync();
mainTask.Wait();
}
static async Task MainAsync()
{
var func = Edge.Func(@"
var esprima = require('esprima');
var stringify = require('json-stable-stringify');
var esprimaast = esprima.parse('var a=1;', { loc: true });
var esprimaStr = stringify(esprimaast, { space: 3 });
return function (data, callback) {
callback(null, esprimaStr);
}
");//end Edge.Func
var result = await func(null);
Console.WriteLine(result.ToString());
JavaScriptSerializer serializer = new JavaScriptSerializer();
Object myresult = serializer.Deserialize<JSProgram>(result.ToString());
Console.WriteLine(serializer.Serialize(myresult));
}
并在点击按钮下触发它
private void button1_Click(object sender, EventArgs e)
{
Task mainTask = MainAsync();
mainTask.Wait();
}
async Task MainAsync()
{
var func = Edge.Func(@"
var esprima = require('esprima');
var stringify = require('json-stable-stringify');
var esprimaast = esprima.parse('var a=1;', { loc: true });
var esprimaStr = stringify(esprimaast, { space: 3 });
return function (data, callback) {
callback(null, esprimaStr);
}
");//end of Edge.Func
var result = await func(null);
txtEsprima.Text = result.ToString();
JavaScriptSerializer serializer = new JavaScriptSerializer();
Object myresult = serializer.Deserialize<JSProgram>(result.ToString());
txtMe.Text=serializer.Serialize(myresult);
}
private void按钮1\u单击(对象发送者,事件参数e)
{
Task mainTask=MainAsync();
mainTask.Wait();
}
异步任务mainsync()
{
var func=Edge.func(@)
var esprima=需要('esprima');
var stringify=require('json-stable-stringify');
var esprimaast=esprima.parse('var a=1;',{loc:true});
var-esprimaStr=stringify(esprimaast,{space:3});
返回函数(数据、回调){
回调(null,esprimaStr);
}
“”;//Edge.Func的结尾
var结果=等待函数(空);
txtEsprima.Text=result.ToString();
JavaScriptSerializer serializer=新的JavaScriptSerializer();
对象myresult=serializer.Deserialize(result.ToString());
Text=serializer.Serialize(myresult);
}
根本没有回复,问题出在哪里?似乎您已经与常见的“混合异步与
.Result()
/.Wait()
死锁”问题发生冲突。您的.Wait()
会阻止WinForms UI线程,直到任务完成。但是,在Windows消息循环上下文中,任务继续的方式是向消息循环发布执行继续委托的请求。由于您使用阻塞.Wait()
停止了消息循环,因此出现了死锁,它将永远留在那里
要修复此问题,请使按钮1\u Click()
异步,并等待主任务,而不是等待()
在第一个示例中,原因是您还没有活动的消息循环,因此延续策略是不同的
private void button1_Click(object sender, EventArgs e)
{
Task mainTask = MainAsync();
mainTask.Wait();
}
async Task MainAsync()
{
var func = Edge.Func(@"
var esprima = require('esprima');
var stringify = require('json-stable-stringify');
var esprimaast = esprima.parse('var a=1;', { loc: true });
var esprimaStr = stringify(esprimaast, { space: 3 });
return function (data, callback) {
callback(null, esprimaStr);
}
");//end of Edge.Func
var result = await func(null);
txtEsprima.Text = result.ToString();
JavaScriptSerializer serializer = new JavaScriptSerializer();
Object myresult = serializer.Deserialize<JSProgram>(result.ToString());
txtMe.Text=serializer.Serialize(myresult);
}