C#

The type or namespace name 'ArrayList' could not be found (are you missing a using directive or an assembly reference?)

using System.Collections.Generic 
using System.collection

std::map<CString,CString>m_mapId;  // Declared a Map

         m_mapId["AA"];
	 m_mapId["AAA"];       //storing values in the list
         m_mapId["BB"];
         m_mapId["BBB"];

CTest1View::OnEditchangeCombo1() 
{
	
	CString strvalue;  	
	CString strTemp;	
	m_ctrlCombo.GetWindowText(strvalue);	
	std::map<CString,CString>::iterator it=m_mapId.begin();
	m_ctrlCombo.ResetContent();	
	for(; it!=m_mapId.end();it++)
	{
		strTemp = it->first;		
		if(strTemp.Find(strvalue)==0)
			m_ctrlCombo.AddString(strTemp);
	
	}

	m_ctrlCombo.SetWindowText(strvalue);	
        m_ctrlCombo.ShowDropDown();	
	
	
}

List<string> cities = new List<string>(); // Declared a list

cities.Add("AAA");                        //storing values in the list
            cities.Add("AA");
            cities.Add("BBBB");
            cities.Add("BB");

comboBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            foreach (string A in cities)   //How to loop till end
            {
                MessageBox.Show(AA);        //  Get the result related to A
            }
      }

//Server side code
MemoryStream ms = new MemoryStream();
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(ms, lst);
byte[] byt = new byte[1024]; 
byt = ms.ToArray(); 
streamWrite.Write(byt); 

string regexstring="\\bhtml\\b|[.]net\\b";
Regex rgx = new Regex(regexstring, RegexOptions.IgnoreCase);
MatchCollection matcol = null;
            string st_data = "I am a .net developer, but also know about asp.net, vb.net ; I work on c#/asp.net platform. I also know dhtml, html4.0, html/xml etc etc.";
//I want the regex to capture all occureneces for html where html is a word seperated \b-->word boundary or is surrounded by decimals like html4.0 above.
            st_data = System.Web.HttpUtility.HtmlDecode(Regex.Replace(st_data, @"<(.|\n)*?>", string.Empty));
            matcol = rgx.Matches(st_data);

            foreach (Match mat in matcol)
            {
                //I WILL GET the mat.value here.
            }