Passing data between forms

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Helle theren i want to send data sotred in array from a from to another form but i didn't find a solution.
i can just send 1 data from a form to another

this is my code

C#

// form1

 private void Button1_Click_1(object sender, EventArgs e)
        {
int data= 15;

  Form2 xfrm = new Form1(data);
 xfrm.Show();

}

//form2
public Form5_1_5(int d)
        {
            InitializeComponent();

textbox1.text=d.tostring();

}

me i want to send an array for example
int[] data= new data[1000]

and in form 2 i can see all the data stored in that array
plese help

What I have tried:

// form1

private void Button1_Click_1(object sender, EventArgs e)
{
int data= 15;

Form2 xfrm = new Form1(data);
xfrm.Show();

}

//form2
public Form5_1_5(int d)
{
InitializeComponent();

textbox1.text=d.tostring();

}

Posted 26-May-16 0:11am

Jammes_Ca

Updated 26-May-16 0:19am

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2 solutions

Solution 1

Yes, but exactly how depends on the "relationship" between the forms.
The form that creates an instance of another:

C#

MyForm mf = new MyForm();
mf.Show();

Is the "parent", the other form is the "child".
Transferring information between two forms, Part 1: Parent to Child[^]
Transferring information between two forms, Part 2: Child to Parent[^]
Transferring information between two forms, Part 3: Child to Child[^]

Posted 26-May-16 0:14am

OriginalGriff

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Karthik_Mahalingam · Accepted Answer · 2016-05-26T00:19:00

Solution 2

Create a property in Form2

C#

public partial class Form2 : Form
  {
      public int[] MyArray { get; set; }

      public Form2()
      {
          InitializeComponent();
      }

Assign the value to the property of Form2 before calling show()

C#

int[] data = new int[1000];
           Form2 obj = new Form2();
           obj.MyArray = data;
           obj.Show();

and you can access those values in the Form_Load event

Posted 26-May-16 0:19am

Karthik_Mahalingam

Comments

Jammes_Ca 26-May-16 7:46am

hi thanks for teh replay, but i have error

in my form 1 i did this

int[] data = new int[1000];
Form2 obj = new Form2();
obj.MyArray = data;
obj.Show();

in form 2 i did this

public int[] MyArray { get; set; }

public Form2()
{
InitializeComponent();
}

}

i get this error
Form1' does not contain a definition for 'MyArray' and no extension method 'MyArray' accepting a first argument of type Form2' could be found (are you missing a using directive or an assembly reference?)

how do i resolve that please

Karthik_Mahalingam 26-May-16 7:51am

paste the code [ public int[] MyArray { get; set; } ] in Form2
the error message shows that 'Form1'

Karthik_Mahalingam 26-May-16 8:01am

post your Form1.cs code and Form2.cs code..

Jammes_Ca 26-May-16 8:09am

i have other question please :)
i have a .ini file that contaon some data.
could you tell me how do i to check if a specefic name existe in this file .ini ??

in my ini file i have the word "cat" for exemple how do i to check the word cat existe in my ini file ??

Karthik_Mahalingam 26-May-16 8:13am

check these it will help you.
c# - Reading/writing an INI file - Stack Overflow[^]
Read/Write settings to INI File using C#[^]
c# - Reading/writing an INI file - Stack Overflow[^]

if the above links didn't help, post a new question about it, people who are aware of it will respond quicker..

Jammes_Ca 26-May-16 8:48am

thanks a lot :)

Karthik_Mahalingam 26-May-16 8:54am

welcome :)

Jammes_Ca 26-May-16 9:00am

hi i have an other question :)
if i have 3 forms
form 1 form 2 and form 3

how do i to send the data from from 1 to form 2 and form 3 ???
int[] data = new int[1000];
please :)

Karthik_Mahalingam 26-May-16 9:09am

Same
Create the property in form
And before calling show function assign the value

Jammes_Ca 26-May-16 9:16am

ok thanks :)

Karthik_Mahalingam 26-May-16 9:24am

:)

BillWoodruff 26-May-16 10:22am

suggestion for Karthik: use names that are a bit more descriptive, like 'form2 instead of 'obj. the use of 'obj in your code to hold an instance of a Form will probably confuse newcomers like this one (who is, obviously, very confused). I voted your solution #5, and applaud your patience :)

Karthik_Mahalingam 26-May-16 10:40am

Thanks Bill,
Definitely i will consider your inputs. From next time i will post the solution with meaningfull/ Self-explanatory object names. :)