Passing values from one windows form to another windows form using c#.net

Question

Currently, I am doing a project. I don't know how to pass a value from one windows form to another
windows form using c#.net. Suppose, I have two form: parent form and child form. Parent form consists of a
combo box & button and I want to pass selected item of combo box to my child form and that item will be
showing in a textbox of child form.

I want immediate help regarding this problem.

Note: I am using MS visual 2005

Thank you.

Answer 1

 

pretty simple. pass in the values you want to pass via the constructor for your child form then set the values in the global variables in that form so your form can access them. Here is an example:

 

//this is the main form. we are doing this code:

 

Form2 child = new Form2("Bob", 22); //2 parameters being passed via constructor

child.Show();

 

//this is Form2. Modify the constructor:

 

public void Form2(string name, int age)

{

   InitializeComponent(); //this is default

   //set the values coming in to the global variables so we can access it in this form throughout the life of this form  

   this._name = name;

   this._age = age;

}

 

//declare these globally in form2 (after the form class decleration)

 

private string _name = String.Empty;

private int _age;

 

and thats it. Now say from Button1 on Form2, we want to read those values. Do this:

 

MessageBox.Show(this._name + " " + this._age.ToString()); //should show "Bob 22" since we passed "Bob" and 22 from the parent form

Answer 2

Hi,

I have similar question. I am working on project that has 3 child forms and MDI PARENT. In my form1 i have file upload button that captures filepath.In my 2nd form i have few user selected values(strings). My third form has a button which when clicked should actualy take the filepath from first form and values from 2nd form and do modifications to the file. how should i proceed. Your replies will be appreciated.

Answer 3

The best way to proceed would be to start a new thread/question of your own.

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Mark the best replies as answers. "Fooling computers since 1971."

Answer 4

ahmedilyas
Thanks a ton....

Answer 5

this looks like it would help me, i got the same prob. Gonna try this out.

Answer 6

worked for me. Just what I needed, thanks

David F

Answer 7

Thanks. It helps a lot.

Answer 8

This is a Visual Basic forum, NOT a C# forum!

Please direct your questions to the proper forum.

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Solitaire

Answer 9

hi ahmedilyas

if these 2 forms are MDI Childs ,  normal Calling of any MDI CHILD Form uses the Default Constructor , i tried to add Parametrized Constructor, on execution , i tried to call one MDI Child to another , its  calling twice.

my Code problem:

FORM -A  and FORM -B    (2 MDI Childs)

In Form - A :  if Call Form B as :     FormB  objB=new FormB(this);   //     this calling on RadioButton Checked

                                                      objB.ShowDialog();                    //

it calling FormB , then im returning a String Value to FormA. it returning string Value to FormA.

it works fine ,  the values passing are getting   but the FormB executes Twice how?. this is Problem.

Thanks in Advance.

Answer 10

Hi check the below link. this will help you.

http://dotnetpools.com/Article/ArticleDetiail/?articleId=47