Thread: C#, passing variables between forms

Hello all,

I have a hopefully simple issue. I am trying to take a large block of code and move it to its own CodeFile.cs so I can just reference it with 1 line instead of posting the same code multiple times.

So I have my code file in place inside of CodeFile.cs which refers to textboxes and such on Form1. My problem is that my CodeFile.cs doesn't have the objects defined in there since they only exist in Form1. How can I fix this so it matches? Hope this made sense.

Alright so I have Form1.cs and CodeFile.cs (Add > New Item > Code File)

I want to add multiple functions in CodeFile.cs and call them in Form1 so I don't have to paste multiple instances of the same code. Example

[In CodeFile.cs]

public void returnValue1 ()

{
int val1;

A + B = C

val1 = c;

}


[In Form1]

Textbox1.Text = CodeFile.returnValue1.val1


hope this clears it up.

After reading my post I still don't think I am being clear in my needs so here is the test code I am trying out, perhaps it will help too.

Code.cs

Code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.Management;
using System.Threading;
using System.IO;

namespace ServerReview
{
    public class myGlobalClass
    {

        public static void test()
        {
          string report;

           report = "This is a test from Code.cs";
        }


    }
}

And Form 1

Code:

    private void label7_Click(object sender, EventArgs e)
        {

            textbox1.Text = myGlobalClass.test.report();
           
        }

Guess I had to just work through the problem myself because I got it.

Code.cs

Code:

namespace ServerReview
{
    public class myGlobalClass
    {

        public static string passTest()
        {
           string report = "This is a test from Code.cs";
           return report;
        }


    }
}

Form 1

Code:

      private void label7_Click(object sender, EventArgs e)
        {

            textbox1.Text = myGlobalClass.passTest();
           
        }

using static methods from external file is one good solution.

if your need is just split your code to several files, you can use the "partial" keyword:
--File1.cs

Code:

public partial class MyFormClass
{
   ....declaring objects and elements....
}

--File2.cs

Code:

public partial class MyFormClass
{
   ....using the objects and elements declared in File1.cs....
}

you can have more than one file using the same class name, thus allowing
several programmers to work on the same class in the same time.