C＃Web应用程序入门经典笔记（下册）

Conn = new SqlConnection(ConfigurationSettings.AppSettings[“cnFriends.ConnectString”]);

 <appSettings> 
    <!--   User application and configured property settings go here.--> 
    <!--   Example: <add key="settingName" value="settingValue"/> --> 
<add key="cnFriends.ConnectionString" value="data source=(local)\NetSdk;initial catalog=FriendsData;user id=sa" />  </appSettings>

bool visible 
btnSearch.Text = visible? “New Search” : “Search” ;

dsResult.tables[“Users”].rows.count 
Conver.Tonint32(ConfigurationSettings.AppSettings[“Cokuale.number”]);

Session[“Search”] = dsResults; 
dsResults = (DataSet) Session[“Search”];

DataRow[] rows = dsResults.Tables[“Users”].Select(filter); 
dsResults = dsResults.Clone(); 
foreach(DataRow row in rows) 
{ 
         dsResults.Tables[“Tables”].ImportRow(row); 
}

ImageButton img = (ImageButton)e.Item.FindControl(“Selectbutton”)

Server.Transfer(“Caoxicao.aspx”);

imgShow.Attributes.Add(“onclick”,”document.getElementById(‘tbPrefs').style.display = ‘block';”);

img.Style.Add(“Cursor”,'Pointer');

ColorConvert cv = new ColorConvert(); 
Color selected = Color.Empty; 
Selected = (olor)cv.ConvertFromString(White);

Response.Cookies.Add(new HttpCookie(“backColor”,r))

Using FriendsReunion.Controls; 
Protectd override void Oninit(EventArgs e) 
{ 
         FriendsFooter _footer = (FriendsFooter)LoadControl(Request.ApplicationPath+”/Controls/ FriendsFooter.aspx”); 
         SubHeader _subHeader = new SubHeader(); 
} 
Page.Contros.AddAt(0,_footer); 
Page.Contros.AddAt(0,_subHeader); 
base.OnInit(e); 
}

HtmlGenericControl p = new HtmlGenericControl(“p”); 
p.Style.Add(“background-color”,bg);

Public DataSet Contact() 
{ 
         String sql = “@ Select * from … …”; 
         DataSet requests = new DataSet(); 
         New SqlDtaAdapter (sql,conn).Fill(requests); 
         //return requests.GetXml(); 
                   Return requests; 
}

DataSet results = new DataSet(); 
Results.ReadXml(new StringReader(fi.ContactRequest(userid)));

FriendsService.FriendsInfo fi = new FriendsService.FriendsInfo(); 
String userid; 
Userid = fi.GetUserID(“…”);

HyperLink reg = new HyperLink(); 
Reg.ToolTip = “… …”;

System.Web.Security.Forms.Authentication.SignOut(); 
Response.write (Request.ApplicaltionPath);

Trace.Write 
Trace.Warn

Try 
                  { 
                            … … 
                  } 
         Catch(ArgumentNullExeption e) 
                  { 
                            … 
                  }

<Custom Errors mode = “on” defaultRedriect = “customerror.aspx”; />