problem with DateTime objects

[cppwxwidgetsss]

hi, i used an object of date time and to be sure i fill it by hard code and i tried to change it by add functions like AddYears() and the others but it don't change i don't know where is the problem i send two part of code the first one is the related code and the second is the whole i appreciate your attention the related code :

DateTime myDateTime = new DateTime(2007, 1, 1, 1, 1, 1);
MessageBox.Show("before:" + myDateTime.ToString());
myDateTime.AddDays(6);
myDateTime.AddYears(1);
myDateTime.AddMonths(4);

        MessageBox.Show("after:" + myDateTime.ToString());

the whole function is :

    private void settings\_Load(object sender, EventArgs e)
    {
        myButtonClass1.dayOfWeek = 1;
        myButtonClass2.dayOfWeek = 2;
        myButtonClass3.dayOfWeek = 3;
        myButtonClass4.dayOfWeek = 4;
        myButtonClass5.dayOfWeek = 5;
        myButtonClass6.dayOfWeek = 6;
        myButtonClass7.dayOfWeek = 7;
        myButtonClass8.dayOfWeek = 8;
        myButtonClass9.dayOfWeek = 9;
        myButtonClass10.dayOfWeek = 10;
        myButtonClass11.dayOfWeek = 11;
        myButtonClass12.dayOfWeek = 12;
        myButtonClass13.dayOfWeek = 13;
        myButtonClass14.dayOfWeek = 14;
        myButtonClass15.dayOfWeek = 15;
        myButtonClass16.dayOfWeek = 16;
        myButtonClass17.dayOfWeek = 17;
        myButtonClass18.dayOfWeek = 18;
        myButtonClass19.dayOfWeek = 19;
        myButtonClass20.dayOfWeek = 20;
        myButtonClass21.dayOfWeek = 21;
        myButtonClass22.dayOfWeek = 22;
        myButtonClass23.dayOfWeek = 23;
        myButtonClass24.dayOfWeek = 24;
        myButtonClass25.dayOfWeek = 25;
        myButtonClass26.dayOfWeek = 26;
        myButtonClass27.dayOfWeek = 27;
        myButtonClass28.dayOfWeek = 28;
        myButtonClass29.dayOfWeek = 29;
        myButtonClass30.dayOfWeek = 30;
        myButtonClass31.dayOfWeek = 31;
        myButtonClass32.dayOfWeek = 32;
        myButtonClass33.dayOfWeek = 33;
        myButtonClass34.dayOfWeek = 34;
        myButtonClass35.dayOfWeek = 35;
        myButtonClass36.dayOfWeek = 36;
        myButtonClass37.dayOfWeek = 37;
        myButtonClass38.dayOfWeek = 38;
        myButtonClass39.dayOfWeek = 39;
        myButtonClass40.dayOfWeek = 40;
        myBu

[Mycroft Holmes]

I suggest you get someone who is an englsh speaker to help rephrase your question - it did not make sense to me. I even read through your code X| hoping it would throw a ligh on your problem - what a mess. Take a look at cultureinfo.

Never underestimate the power of human stupidity RAH

[Juan1R]

According to the .Net Documentation of AddYears: "This method does not change the value of this DateTime. Instead, a new DateTime is returned whose value is the result of this operation."

[DaveyM69]

DateTime is immutable - it can't change. AddDays and the other functions return a new DateTime with the new value. You should do

myDateTime = myDateTime.AddDays(6);
// etc...

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus)

[Vikram A Punathambekar]

DateTime.AddXXX creates a new DateTime object with the added value. Use this:

DateTime myDateTime = new DateTime(2007, 1, 1, 1, 1, 1);
MessageBox.Show("before:" + myDateTime.ToString());
myDateTime = myDateTime.AddDays(6);
myDateTime = myDateTime.AddYears(1);
myDateTime = myDateTime.AddMonths(4);
MessageBox.Show("after:" + myDateTime.ToString());

Cheers, Vıkram.

Carpe Diem.