C#的RunWorkerAsync()不会触发的DoWork() [英] C#: RunWorkerAsync() doesn't trigger DoWork()
问题描述
我写一个基于小窗体应用程序连接到LDAP服务器,而我想要的连接按钮,在后台工作。所以,我是继信息和讨论 <一href="http://stackoverflow.com/questions/3065700/how-to-start-and-stop-a-continuously-running-background-worker-using-a-button">here
但由于某种原因,我的code似乎没有正常时:我在设置断点'worker.RunWorkerAsync();'它仅几步之遥的权利,通过它。
我是什么做错了吗?我工作在Visual Studio 2010中,如果它很重要。
使用系统;
使用System.Collections.Generic;
使用System.ComponentModel;
使用System.Data这;
使用System.Drawing中;
使用System.Linq的;
使用System.Text;
使用System.Windows.Forms的;
使用System.DirectoryServices中;
使用的System.Threading;
命名空间ldapconnect
{
公共部分类Form1中:形态
{
私人无效Form1_Load的(对象发件人,EventArgs的)
{
}
公共Form1中()
{
的InitializeComponent();
}
//服务器
公共字符串LDS;
//命名上下文
公共串根;
公共字符串的用户名;
公共字符串密码;
BackgroundWorker的工作人员=新的BackgroundWorker();
私人无效worker_DoWork(对象发件人,DoWorkEventArgs E)
{
工人=发件人为BackgroundWorker的;
的foreach(字符串s的连接(工人,E,LDS +/+根,txt_user.Text.ToString(),txt_pass.Text.ToString()))
{
rtb_results.Text + = S +\ r \ N的;
}
}
私人列表&LT;字符串&GT;连接(BackgroundWorker的工作者,DoWorkEventArgs即字符串SERV,串USR,串通)
{
//目录搜索code。考虑服务器的路径和creds从形式传递
康涅狄格州的DirectoryEntry =新的DirectoryEntry(SERV,USR,通过);
DirectorySearcher从DS =新DirectorySearcher从(康涅狄格州);
//我只希望用户
ds.Filter =对象类=用户;
名单&LT;字符串&GT; sendBack =新的名单,其中,串&GT;();
尝试
{
SearchResultCollection结果= ds.FindAll();
的foreach(信息搜索结果导致的结果)
{
sendBack.Add(result.ToString());
}
}
赶上(例外前)
{
sendBack.Clear();
sendBack.Add(ex.ToString());
}
返回sendBack;
}
//连接键式启动后台工作
私人无效btn_connect_Click(对象发件人,EventArgs的)
{
worker.RunWorkerAsync();
}
//退出按钮
私人无效btn_close_Click(对象发件人,EventArgs的)
{
this.Close();
}
//设置服务器路径
私人无效btn_server_Click(对象发件人,EventArgs的)
{
字符串SERV =输入框(LDAP://,IP或LDS服务器的DNS名称,);
LDS = SERV;
lbl_server.Text = LDS;
}
//设置默认的上下文
私人无效btn_context_Click(对象发件人,EventArgs的)
{
字符串CNTX =输入框(在CN =,DC =,DC =形式:,默认命名上下文,);
根= CNTX;
lbl_cntx.Text =根;
}
// VB交互盒
私人字符串输入框(字符串,字符串B,串c)
{
返回Microsoft.VisualBasic.Interaction.InputBox(A,B,C);
}
私人无效btn_Defaults_Click(对象发件人,EventArgs的)
{
LDS =LDAP://127.0.0.1;
根=DC =用户,DC =测试,DC =本地;
txt_user.Text =读者;
txt_pass.Text =密码;
lbl_server.Text = LDS;
lbl_cntx.Text =根;
}
}
}
您从来没有布线了该事件。
公共Form1中()
{
的InitializeComponent();
worker.DoWork + =新DoWorkEventHandler(worker_DoWork);
}
I am writing a small forms based application to connect to an LDAP server, and I wanted the "connect" button to work in the background. So I was following the information and discussion here
but for whatever reason my code doesn't appear to be working right: I set a breakpoint at 'worker.RunWorkerAsync();' And it just steps right through it.
What am I doing wrong? I am working in Visual Studio 2010, in case it matters.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.DirectoryServices;
using System.Threading;
namespace ldapconnect
{
public partial class Form1 : Form
{
private void Form1_Load(object sender, EventArgs e)
{
}
public Form1()
{
InitializeComponent();
}
//server
public string lds;
//naming context
public string root;
public string username;
public string password;
BackgroundWorker worker = new BackgroundWorker();
private void worker_DoWork(object sender, DoWorkEventArgs e)
{
worker = sender as BackgroundWorker;
foreach (string s in connect(worker, e, lds + "/" + root, txt_user.Text.ToString(), txt_pass.Text.ToString()))
{
rtb_results.Text += s + "\r\n";
}
}
private List<string> connect(BackgroundWorker worker, DoWorkEventArgs e, String serv, string usr, string pass)
{
//Directory search code taking server path and creds passed in from form
DirectoryEntry conn = new DirectoryEntry(serv, usr, pass);
DirectorySearcher ds = new DirectorySearcher(conn);
//I only want users
ds.Filter = "objectClass=user";
List<string> sendBack = new List<string>();
try
{
SearchResultCollection results = ds.FindAll();
foreach (SearchResult result in results)
{
sendBack.Add(result.ToString());
}
}
catch (Exception ex)
{
sendBack.Clear();
sendBack.Add(ex.ToString());
}
return sendBack;
}
//connect button start background worker
private void btn_connect_Click(object sender, EventArgs e)
{
worker.RunWorkerAsync();
}
//Exit Button
private void btn_close_Click(object sender, EventArgs e)
{
this.Close();
}
//set server path
private void btn_server_Click(object sender, EventArgs e)
{
string serv = inputBox("ldap://", "IP or DNS Name of LDS Server", "");
lds = serv;
lbl_server.Text = lds;
}
//set default context
private void btn_context_Click(object sender, EventArgs e)
{
string cntx = inputBox("In CN=,DC=,DC= Form:", "Default Naming Context", "");
root = cntx;
lbl_cntx.Text = root;
}
//VB interaction box
private string inputBox(string a,string b,string c)
{
return Microsoft.VisualBasic.Interaction.InputBox(a, b, c);
}
private void btn_Defaults_Click(object sender, EventArgs e)
{
lds = "LDAP://127.0.0.1";
root = "DC=USERS,DC=TEST,DC=LOCAL";
txt_user.Text = "reader";
txt_pass.Text = "password";
lbl_server.Text = lds;
lbl_cntx.Text = root;
}
}
}
You are never wiring up the event.
public Form1()
{
InitializeComponent();
worker.DoWork += new DoWorkEventHandler(worker_DoWork);
}
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