compare date from one form to another

[virusisfound]

I have two forms and i have retrive controls from one form to another.

In form 1
Two controls
1 datetimepicker1
2 datetimepicker2

in form 2
1 Datetimepicker1

now i retrive form1 controls on form2 and i want to compare form1 datetimepicker with form2 datetimepicker.

here is code:

/

Form2 fr2 = new Form2("", "");
            DateTime cdt = dateTimePicker1.Value;
            if ((fr2.dateTimePicker1.Value<=cdt) && (fr2.dateTimePicker2.Value>=cdt))
            {
              MessageBox.Show("This Date Is Not Valid In Current Accounting Year", "Correct Date");
            }

            else
{
 MessageBox.Show("You Can Save");
}
            {

but this code not giving me the proper output. it always goes in else condition.

either the form2 datetimepicker1 value not properly change.

but can you solve this problem.

[Momerath]

You never show Form2 so how does the date get set?

[Mitja Bonca]

When you open form2, pass a parameter of dateTimePicker (a value of it) in constructor to form2. So now you have both values on forms. You only get a value of dateTimePicker from form2 and compare them.

[virusisfound]

Form 2 is always display on the top of the screen and all these forms are run under the form2 because it is MDI Form.

[Momerath]

In line 1 of your sample code you create a new Form2 that is not displayed and then you pull the date from it. If you already have a Form2 displayed, then you don't need that line at all.

[virusisfound]

Form2 fr2 = new Form2("", "");

This line is for creating an object of that form because we can't access that controls directly we have to create the object.

http://www.daniweb.com/forums/thread298003-2.html

this coding i use to access forms controls.

[Momerath]

Yes, you create an object of that form, but it has no relationship to the other form2 that you are showing. It is a different object. You have to get a reference to the original form2 or your code will not work.

[virusisfound]

how to do that please tell me.

[Momerath]

Since you've posted no code nor explained anything about where your method is, no.

[akshintlakalyan]

For this kind of problems, i hav a solution. Instead of Creating the Object for Form2 in Form1, u create that Object Globally in Program.cs and Use every where Program.<object>.<Controll Name>, which will work fine.

Hope it will Help U.

[virusisfound]

I am sorry momerath I realy dont have so much of knowledge about this but I want to learn it. but thank you for reply my post.

Thank you akshintlakalyan for telling me another solution I tried it but i hope you will tell me how to do it.

I am totaly new in the C# with this concept.

I have create an object in program.cs
here is the code

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace WindowsApplication15
{
    
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]

        
      
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
           
            Form2 fr2 = new Form2();
        }
    }
}

is it is correct.

thanks....