Where/How to validate fields on Form2

I got it!!!     The trick is to set the DialogResult for the OK button to none and then set with code to OK.    Read this in a few googled sites but it did not quite sink in what C# was doing.     Now it makes sense.
Thank you for replies.    Great forum!!
 

Fundamentally, I just want to know where fields from a second form are validated, in Form2 or back in Form1 that created Form2.   Where do I check that these required fields are filled?    I've tried in both Form1 and in Form2 with the same wrong results.     I believe it should take place in the if/else of Form2 and not leave Form2 until all required fields are filled.    That does not seem to be the case and I think it may have to do with who owns Form2 but I cannot figure out how to handle it.
I appreciate your response and effort to address this.
 
 

As you are calling the form with ShowDialog() try this in FormClosing, if validation fails cancel the close instruction.

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
           
        if(!validated) //but remember there may be cases where closing the form without validating is required.
           e.Cancel;
        }

Hai man..

It's just too confusing wat u have done..I guess this is a small thing...Wats ur requirement...explain it clearly i'll try to do and explain u the same.

wat i have understood is u require two fields case and reason,and thats need to be validated and a dialog box for ok and cancel..am i right..

With Regards
P.Krishna Prasad

I hope so,   here's some of the code.   I have tried validating the two fields (CaseNo, Reason) in Form1 too with the same results.   Thanx for your response.  This has been really frustrating and I bet it is something simple.
Form1.cs
{
            MessageBox.Show("The Last Name and First Name are required!!");
            return;
            }
            //  Above code handles Form1 textboxes


            //Call Form2 for CaseNo and Reason data
            GetForm2();                          
            ...
            ...
// Opens second Diaolog form (Form2) to get Case Number and Reason
        public void GetForm2()
        {
            Form2 qForm = new Form2();
          
           if (qForm.ShowDialog()== DialogResult.OK)
            {
                CaseNo = qForm.CaseNo;
                Reason = qForm.Reason;
                MessageBox.Show("Form2 Exists" + " " + CaseNo + "  " + Reason);
            }
            qForm.Dispose();
        }
Form2.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace DMV_Test_1
{
    public partial class Form2 : Form
    {
        public Form2()
        {
                InitializeComponent();
        }

        public string CaseNo
        {
            get { return textBox1.Text; }
        }
        public string Reason
        {
            get { return textBox2.Text; }
        }
       
  
        private void button1_Click(object sender, System.EventArgs e)
        {
            if (CaseNo == "")
            {
                MessageBox.Show("The Case No is required!!");
                this.textBox1.Focus();
                return;
            }

            else
            if (Reason == "")
            {
                MessageBox.Show("The Reason is required!!");
                this.textBox2.Focus();
                return;
            }
            else
            {
                this.DialogResult = DialogResult.OK; Close();
            } 
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Cancel;    Close();
        }
    }
}
 

Hai tony..

To an extent i can figure out ur problem..my doubt is how are u navigating from the first form to the next?

and if u provide a jist of the code..it would be easy to figure out ur problem


With Regards
P.Krishna Prasad