measure of response in method

I had the task to test a method and measure how much time was taken.

Here is how i did it:


Stopwatch sw = new System.Diagnostics.Stopwatch();
sw.Start();

FillDropDownList();
buttonContinue.Text = "it take... (ms): " + sw.ElapsedMilliseconds;

sw.Stop();


Notice that in order to use StopWatch you will need the System.Diagnostics.

Send Mail on a quick way

here is a sending e-mail on a quick way

string strTo = "christophw@sleeper.Dev.AlfaSierraPapa.Com"; string strFrom = "webmaster@aspheute.com"; string strSubject = "Hi Chris";  SmtpMail.Send(strFrom, strTo, strSubject,   "A real nice body text here");  

Response.Write("Email was queued to disk");

File.Copy method in C#

this is a quick example of how to use the copy method of the System.IO namespace

using System;

using System.IO;

class Test

{

public static void Main()

{

string path = @"c:\temp\MyTest.txt";

string path2 = path + "temp";

try

{

// Create the file and clean up handles.

using (FileStream fs = File.Create(path)) {}

// Ensure that the target does not exist.

File.Delete(path2);

// Copy the file.

File.Copy(path, path2);

Console.WriteLine("{0} copied to {1}", path, path2);

so try it for the common use of files..

Example WebSiteMap

                                                       //close the node                                //close the node                                          //close the node
  

Polymorphism in C#

so here's a basic question on Polymorphism in C#, i found at SO. looking for the basics these days.

class A {
    public virtual void Method1(){}

    public void Method2() {
        Method1();
    }
}

class B:A {
    public override void Method1() { }
}

class main {
    A myobject = new B();
    myobject.Method2();
}

So which function gets called?

B.Method1();

gets called because it properly overrides the virtual method A.Method1();

VB.Net equivalent of C# “As”

Here is an equivalance of the as of C# to VB programmers.

in C# you do this:

var x = y as String;
if (x == null) ...

in VB you do this :

Dim x As String = TryCast(y, String)
If x Is Nothing Then ...

meaning  "as" = "TryCast"

setting value to a RadDatePicker on load

I had to come with a page who has a link and returns to the selected values of a list . So here is the way i did it.


private void SetDateRequest(string dateValue, RadDatePicker datePicker, DateTime valueDate)
{
DateTime dateOut;
datePicker.SelectedDate = valueDate;
if (DateTime.TryParseExact(dateValue, "yyyy-MM-dd", null, DateTimeStyles.None, out dateOut))
{
datePicker.SelectedDate = dateOut;
}
}

and this is how I call it :

SetDateRequest(dateTo, ToDateRadDatePicker, endDate);


Cheers,

DateTime.ToString() display “A.M.” or “P.M.”

Is there any way to use the DateTime.ToString() method to display the meridiem of the time portion as "A.M." instead of "AM"?

here is the work around.

using System;

using System.Globalization;

class Program {

public static void Main() {

CultureInfo c = (CultureInfo)CultureInfo.CurrentCulture.Clone();

c.DateTimeFormat.AMDesignator = "A.M.";

c.DateTimeFormat.PMDesignator = "P.M.";

Console.WriteLine(DateTime.Now.ToString("tt",c));

}

}

This are a second way to try with a designator. But here you have a static date format and therefore miss the culture.

DateTime time = DateTime.Now;

string s = time.ToString("yyyy.MM.dd hh:mm:ss t.\\M.");

Console.WriteLine(s);

Cheers

Dictionary on C#

this will get a mapping for values of page names and attach the resource to redirecto to each value.

string previousPage = Request.QueryString["Src"];

string DP = Request.QueryString["DP"];

var dictionary = new Dictionary();

dictionary["AccountingDetail"] = "AccountingDetail.aspx?DP="+DP;

dictionary["Fixing"] = "Fixing.aspx";

dictionary["Payment"] = "Payment.aspx";

if (dictionary.TryGetValue(previousPage, out pageMap ))

{

Response.Redirect(pageMap );

}

and here is the data format when you want to pass a datetime value in de parameters of an url from a source page:

DataNavigateURLFormatString="MyPage.aspx?product={0}&category={1}&date={2:d}"

here they are Semantics.

speaking about semantics...heres a short example.

class car {

int wheels = 4;

string engine;

}

car mybike = new car();

mybike.wheels = 2;

mybike.engine = null;

The code is error-free, but is semantically incorrect. It reflects poorly on the programmer

Adding a value with Insert instead of Add method

Adding a value with Insert instead of Add method, wich gets me to the index, as an first argument

and the text as second argument.

var query = from filtxxxr in db.Entity

where fxxxr.Page == thispage

where fixxxr.Shared || filterUser > 0

orderby fixxxr.id descending

select new

{

id,

Name,

Page,

Shared

};

DropDownList.DataSource = query;

DropDownList.Items.Insert(0,"No Applied Filter");

DropDownList.DataValueField = "id";

DropDownList.DataTextField = "Name";

DropDownList.DataBind();

formating a datetimepicker

Some times we want to give a certain format on a datepicker control that we created. here's a quick example

private void picker_Loaded(object sender, RoutedEventArgs e)// the datapicker's load event.
{
this.picker.Text = DateTime.Now.ToString("dd-MMM-yyyy");
}

private void picker_SelectedDateChanged(object sender, SelectionChangedEventArgs e)
{
this.picker.Text = this.picker.SelectedDate.Value.ToString("dd-MMM-yyyy");
}

a quit of a short example

var valueDate = valueDatePicker.SelectedDate.Value.ToString("s");

returns the set with the ISO format (yyyy-mm-dd)

getting done things

public static string GetFilterExpression(int filterId)

{

var db = new UserQuery();

var filter = db.Filters.Single(f => f.Id == filterId);

var filterExpressions = filter.FilterExpressions;

var expressions = new List();

foreach(FilterExpression expr in filterExpressions)

{

expressions.Add(string.Format(expr.Operator.Operation, expr.ColumnName, expr.Value));

}

string logicalOperator = (filter.MatchAll) ? " AND " : " OR ";

return String.Join(logicalOperator, expressions.ToArray());

}

about how to calculate a checkin -checkout at nights

the solution to the date is like these in the case we just care for the entrance.