Passing data between 3 windows forms in visual studio using C?

I would recommend a change from using constructors to using properties. This will keep things properly 'contained' and it's pretty simple.

I would recommend a change from using constructors to using properties. This will keep things properly 'contained' and it's pretty simple. EX: public partial class Form3 : Form { public String form1Text {get; set;} public Form3() { InitializeComponent(); } } public partial class Form2 : Form { public Form2() { InitializeComponent(); string loginname = form2_textbox.

Text; } public String form2Text {get; set;} private void send_to_form1_button_Click(object sender, EventArgs e) { form2Text = form2_textbox. Text; this. DialogResult = DialogResult.

Ok; this.Close(); } } Then in form 1: public partial class Form1 : Form { string receivefromForm2a; public Form1() { InitializeComponent(); } private void openform3_Click(object sender, EventArgs e) { Form3 f3 = new Form3(); f3. Form1Text = receivefromForm2a; f3.Show(); } private void OPENFORM2_Click(object sender, EventArgs e) { Form2 f2 = new Form2(); if(f2.ShowDialog() == DialogResult. Ok) { receivefromForm2a = f2.

Form2Text; //New Property on Form2. } } }.

Create nonparametrized constructor for form3 like in form2: public Form3() { InitializeComponent(); } This usually to create abstract methods in forms and/or delegates for updating textboxes and sharing data between forms. Or create some data holder.

Create a Constructor which has an argument of type string in Form3.cs. Public Form3() { InitializeComponent(); } public Form3(string text):this() { this.txtName. Text=text; }.

That error is thrown because Form3 has no default Constructor anymore since you defined one with a string parameter. You need to create a default Constructor like this public Form3(){}. But Instead of doing all this mess you can handle events of you both forms.

Like if Form1 is the main Form then something like this can be done: In Form1 public string textFromForm2 = string. Empty; private void openform3_Click(object sender, EventArgs e) { Form3 f3 = new Form3(); f3. Controls"received_from_form1_textbox".

Text = textFromForm2 ; f3.Show(); } private void OPENFORM2_Click(object sender, EventArgs e) { Form2 f2 = new Form2(); //I am binding the event to a handler which will save text //you should check for null for f2. Controls returned any thing or not, I am leaving it for now f2. Controls"send_to_form1_button".

Click += (s,e)=>{ txtFromForm2 = f2. Controls"form2_textbox". Text; }; f2.Show(); } Update if you don't want to use Lambadas then bind events like this: First you will need a reference to the Form2 so declare in your class like this: Form2 f2; then bind the event (in place of the lambada I have given before) f2.

Controls"send_to_form1_button". Click += new Eventhandler(click_handler); then somewhere in Form1 class: protected void click_handler(object sender, EventArgs e) { if(f2! = null) txtFromForm2 = f2.

Controls"form2_textbox". Text; } similarly for Form3.

– sqlchild Feb 18 at 14:36 I have used Lambda and anonymous delegates to bind event.. if you are using . Net 2.0 (Whre they are not supported) then you can do usual binding I have explained in my update – Shekhar_Pro Feb 19 at 3:13 @Shekhar_Pro: sir, my problem hasn't been solved yet, please tell me where to put this code which you have given, am confused totally, am not able to implement a simple process of sending a textbox text from Form2 to Form1 and then from Form1 to form3, FORM1 being the main parent form. – sqlchild Feb 21 at 12:50 put this code in Form1.

If you still have problems.. Give us your whole code we will see nd tell you what to modify.. (post your code here or on pastebin) – Shekhar_Pro Feb 21 at 13:11 @Shekhar_Pro : sir, I have pasted the code above in my question itself.Do I have to make changes in that also? – sqlchild Feb 21 at 13:35.

Public partial class Form1 : Form { string receivefromForm2a; public Form1() { InitializeComponent(); } public void Method_Receive_From_Form2(string receivefromForm2) { receivefromForm2a = receivefromForm2; Form3 f3 = new Form3(receivefromForm2a); } private void openform2_Click(object sender, EventArgs e) { Form2 f2 = new Form2(); f2.Show(); } private void openform3_Click(object sender, EventArgs e) { Form3 f3 = new Form3(); //**----this line gives error:No overload for method Form3 takes 0 arguments** f3.Show(); } } public partial class Form2 : Form { public Form2() { InitializeComponent(); } //SENDING VALUE OF TEXTBOX ON FORM2 TO FORM1. Private void send_to_form1_button_Click(object sender, EventArgs e) { Form1 f1 = new Form1(); } } public partial class Form3 : Form { public Form3(string receive_from_Form1) { InitializeComponent(); received_from_form1_textbox. Text = receive_from_Form1; } }.

I fixed your code blocks. – Tony Abrams Feb 21 at 14:52.

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