ClanKiller.com
http://forums.clankiller.com/

c# code snippets
http://forums.clankiller.com/viewtopic.php?f=24&t=2314		 Page 1 of 1
Author:  Satis [ Thu Apr 19, 2007 7:26 am ]
Post subject:  c# code snippets
Ok, so I have one for javascript, now I'm making one for c# (in an asp.net context).

how to tell if a number is even or odd
[php]
if ((i & 1) != 1) //if odd
{
rowclass = " class='shaded'";
}

or

if ((i & 1) == 1) //if even
{
rowclass = " class='shaded'";
}
[/php]

multidimensional array initialization
I always forget this, it's just different enough from php to confuse me
[php]
string [,] varname= new string[2,3];
or
string[,] varname= new string[,]{
{ "whatever","things","doh" },
{ "","spacer","" },
{ "things","radioheader","" },
}
[/php]

and a quick how to iterate through it
[php]for (int i = 0; i < (varname.Length / 3); i++)
{
returnstring += varname[i, 0] + " " + varname[i, 1] + " " + varname[i, 2] + "<br>";
}[/php]

I'm sure I'll have more later
Author:  Satis [ Tue Jul 24, 2007 12:47 pm ]
Post subject: 
some more stuff....

getting the current executing page
[php]
Path.GetFileName(Request.FilePath)
[/php]

do a page redirect
[php]
Response.Redirect("login.aspx", true);
//true means to stop script execution.
//otherwise script execution of the current page continues
[/php]

setting cookies
[php]
//set cookies
HttpCookie usernameCookie = new HttpCookie("username");
HttpCookie passwordCookie = new HttpCookie("password");
usernameCookie.Value = this.Username;
passwordCookie.Value = this.EncryptedPassword;
usernameCookie.Expires = System.DateTime.Now.AddHours(cookietime);
passwordCookie.Expires = System.DateTime.Now.AddHours(cookietime);
HttpContext.Current.Response.Cookies.Add(usernameCookie);
HttpContext.Current.Response.Cookies.Add(passwordCookie);
[/php]

killing cookies
[php]
HttpCookie username_cookie = HttpContext.Current.Request.Cookies["username"];
HttpCookie password_cookie = HttpContext.Current.Request.Cookies["password"];
try
{
username_cookie.Expires = DateTime.Now.AddDays(-1);
HttpContext.Current.Response.Cookies.Add(username_cookie);
}
catch{ }
try
{
password_cookie.Expires = DateTime.Now.AddDays(-1);
HttpContext.Current.Response.Cookies.Add(password_cookie);
}
catch { }
[/php]

sessions
[php]
//set sessions
Session["username"] = this.Username;
Session["password"] = this.EncryptedPassword;

Response.Write(Session["username"]);
Response.Write(Session["password"]);

//kill sessions
Session.Abandon();
[/php]
Author:  Satis [ Wed Jul 25, 2007 6:51 am ]
Post subject: 
building a multidimensional array from a database. Multidimensional arrays are one of c#'s major weaknesses and probably the biggest thing I don't like about it.

*edit* ok, the non breaking space thing is really annoying

[php]
string select = @"SELECT count(*)
FROM mytable
WHERE whatever > 0";
doQuery(select); //this is a method I built that sets an OleDbDataReader object with the query results.
dr.Read();
int numItems = Convert.ToInt16(dr.GetValue(0));
dr.Dispose();
conn.Close();

//create the array ... I made it a string... no mixed arrays without using some list type or something
int num_fields = 5;
string[,] multidimensionalArray = new string[numItems, num_fields];

select = @"SELECT one, two, three, four, five
FROM mytable
WHERE whatever > 0";
doQuery(select);
int i = 0;
while (dr.Read())
{
//populate the array
for (int k = 0; k < num_fields; k++)
{
multidimensionalArray[i, k] = Convert.ToString(dr.GetValue(k));
}
}
dr.Dispose();
conn.Close();

//you now have the array. You can iterate through it similarly as setting it
Response.Write("<table>");
for (i = 0; i < numItems; i++)
{
Response.Write("<tr>");
for (int k = 0; k < num_fields; k++)
{
Response.Write("<td>" + multidimensionalArray[i, k] + "</td>");
}
Response.Write("</tr>");
}
Response.Write("</table>");

//one gotcha. ... multidimensionalArray.Length() does not give you the number of rows,
//it gives you the number of elements, so you HAVE to know how many elements / row.
[/php]
Page 1 of 1 All times are UTC - 6 hours
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/