1.C#编写创建一个线程的代码
using System;
using System.IO;
using System.Threading ;
class MyThread{
public int count;
string thrdName;
public MyThread(string name){
count=0;
thrdName=name;
}
public void run(){
Console.WriteLine(thrdName+”starting.”);
do
{
Thread.Sleep(500);
Console.WriteLine(“In”+thrdName+”, count is “+count);
count++;
}
while(count<10);
Console.WriteLine(thrdName+” terminating.”);
}
}
class MultiThread{
public static void Main()
{
Console.WriteLine(“Main thread starting.”);
MyThread mt=new MyThread(“Child #1″);
Thread newThrd=new Thread(new ThreadStart(mt.run));
newThrd.Start();
do {
Console.Write(“.”);
Thread.Sleep(100);
}
while(mt.count!=10);
Console.WriteLine(“Main thread ending.”);
}
}
2.写出一个函数来实现去掉任意一个给定的XML文档的重复结点，以给定的”key”重复作为结点重复的标准，
如下例：Milk 4Milk 0.5Coffe 0.5
当以Name字段作为key时，第一个和第二个结点是重复的，当Amount作为key时，则第二个和第三个结点是重复结点。
所以函数应该是这样格式的：
string DeDup(string xml, string keyNode, string rootPath)
参考解决方案：
private static string RemoveDuplicates(string xml, string key, string rootXPath)
{
XmlDocument doc = new XmlDocument();
List sb = new List();
string keyValue;
try
{
doc.Load(xml);
XmlElement root = doc.DocumentElement;
XmlNodeList xnodelist = root.SelectNodes(rootXPath);
int i=0;
foreach (XmlNode item in xnodelist)
{
Console.WriteLine(i + "\b\b\b\b\b");
i++;
keyValue = item.SelectSingleNode(key).InnerXml;
if (sb.Contains(keyValue))
xnode.RemoveChild(item);
else
sb.Add(keyValue);
}
return doc.OuterXml;
}
catch (Exception ex)
{
// Log exception...
throw ex;
}
}
3.如何在C# winform中异步调用web services
如果webservice有一个Get()方法。
new出来一个Web Service得proxy以后，它会有一个GetAsync()的方法和一个GetCompleted的事件，注册GetCompleted事件，然后invoke GetAsync方法就可以了。
4.C#如何调用Word并打开一个Word文档
private void OpenMicrosoftWord(string urlorpath)
{
//启动线程
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.FileName = “WINWORD.EXE”;
startInfo.Arguments = urlorpath;
try
{
Process.Start(startInfo);
}
catch (Exception e)
{
MessageBox.Show(“Cannot start Microsoft Word, please make sure it is installed.”);
}
}
5.C#如何进行LDAP用户校验
private bool Authenticate(string userName, string password, string domain)
{
bool authentic = false;
try
{
DirectoryEntry entry = new DirectoryEntry(“LDAP://”+domain, userName, password);
object nativeObject = entry.NativeObject;
authentic = true;
}
catch (DirectoryServicesCOMException) { }
return authentic;
}
6.编写一个类体现构造，公有，私有方法，静态，私有变量
public class stu
{
private string name;
public static int count;
public stu()
{
}
public string Name
{
get{return name;}
set{name = value;}
}
private string Method1()
{
Response.Write(“私有方法”);
}
public string Method2()
{
Response.Write(“公有方法”);
}
}
7.C#语言写出在本地创建一个UDP接收端口的具体过程
：const int port = 8000 ;
//定义端口号
TcpListener tcplistener = new TcpListener(port);
Console.WriteLine(“侦听端口号： ” + port.ToString());
tcplistener.Start();
//侦听端口号
while (true)
{
Socket socket = tcplistener.AcceptSocket();
//并获取传送和接收数据的Scoket实例
Proxy proxy = new Proxy(socket);
//Proxy类实例化
Thread thread = new Thread(new ThreadStart(proxy.Run));
//创建线程
thread.Start();
//启动线程
}
8.C#语言写出与SQLSERVER访问时的具体过程
private SqlConnection conn;//定义一个数据库连接
private SqlCommand com;//定义执行命令
public data()
{
//在配置文件中设置
conn = new SqlConnection();
conn.ConnectionString = ConfigurationManager.AppSettings["connString"].ToString();
}
//打开数据库
public void open()
{
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
}
//关闭数据库
public void close()
{
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
}
//执行数据库操作,返回DataSet
public void getDataSet(string proc,SqlParameter[] parm,out DataSet ds)
{
com = getCommand(proc,parm);
SqlDataAdapter sda = new SqlDataAdapter(com);
ds = new DataSet();
sda.Fill(ds);
}
//返回SqlCommadn
public SqlCommand getCommand(string proc, SqlParameter[] parm)
{
SqlCommand com = new SqlCommand();
com.Connection = conn;
com.CommandType = CommandType.StoredProcedure;
com.CommandText = proc;
foreach (SqlParameter p in parm)
{
com.Parameters.Add(p);
}
return com;
}
//返回DataReader
public SqlDataReader getDataReader(string proc, SqlParameter[] parm)
{
com = getCommand(proc, parm);
return com.ExecuteReader();
}
//执行数据库操作,返回void
public void ExecuteCommand(string proc, SqlParameter[] parm)
{
com = getCommand(proc, parm);
open();
com.ExecuteNonQuery();
close();
}
注意：引用 using System.Data.SqlClient，如果是连接模式记得完了后断开连接，SqlDataReader记得关闭，出错了怎么处理
9.写一个实现对一段字符串翻转的方法，附加一些条件，如其中包括“，”、“.”，对其设计测试用 例 。
答： using System.Text;
string inputStr = “a,b,c,d,e,f,g,h,i,j,k,l”;
char[] inputChar = inputStr.ToCharArray();
int count = inputChar.Length;
StringBuilder sb = new StringBuilder();
for (int m = count – 1; m >= 0; m–)
{
sb.Append(inputChar[m]);
}