how can i pass value to a running form in C#

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Hi,
I have 2 forms : Form1 and Form2
Form1 start running with Application.Run()

and Form1 have a datagridview if user Start Edit the DataGridView
i run Form2 like this

Form2 addStock = new Form2(productNo, stockString, this);
addStock.Activate();
addStock.Show();

After Form2 finish the task, When i click a button on Form 2 i want to get value return to Form1 and show in the DataGridView on Form1 and close the Form2

i tried to pass the Form1's object
Form2 addStock = new Form2(productNo, stockString, this);

but on Form2 i can't access the Form1's DataGridview with that object

how can i do to accomplish this?

Posted 9-Nov-13 17:21pm

deva936

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Aniket Yadav · Answer 1 · 2013-11-09T20:18:00

Try this links

Passing Data Between Forms[^]

http://dotprogramming.blogspot.in/2013/08/passing-values-from-datagridview.html[^]

http://stackoverflow.com/questions/1559770/send-values-from-one-form-to-another-form-in-c-sharp-winforms-application[^]

These links will definitely give you some idea.
Hope this will help you.

OriginalGriff · Answer 2 · 2013-11-09T21:13:00

Since the Form2 instance is created from Form1, the easiest way is to create a property in Form2 which retrieves the data.
You then either display the form with
1) ShowDialog - the form displays, and when it closes from the OK button or otherwise your Form1 code will continue from that point and can fetch the data:

C#

Form2 f2 = new Form2()
if (f2.ShowDialog == DialogResult.OK)
   {
   string myData = f2.Data;
   ...
   }

2) Show - the form displays, but you need to add a handler to the FormClosed event and retrieve the data there:

C#

Form2 f2 = new From2();
f2.FormClosed += new FormClosedEventHandler(ClosedForm);
f2.Show();
...
private void Closed(object sender, FormClosedEventArgs e)
   {
   Form2 f2 = sender as Form2;
   if (f2 != null)
      {
      string myData = f2.Data;
      ...
      }
   }

NorouziFar · Answer 3 · 2013-11-09T18:11:00

Solution 1

in form1 set modifires for gridview = public

means DataGridview>properties>modifires=public

Posted 9-Nov-13 18:11pm

NorouziFar

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OriginalGriff 10-Nov-13 3:03am

Reason for my vote of one: This is a very, very poor idea. There are private by default for a reason! If you expose controls to the outside world, you lock the design of your form - you cannot make changes without considering the effects on form that you do not / should not even know exist! Please brush up on your OOPs principles before answering any further questions.

how can i pass value to a running form in C#

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