[RESOLVED] [3.0/LINQ] Get Value from Other Form

[jbatman]

Hi, I've tried a lot of manipulations to get the current data in a textbox from other form but it always return an empty. How to get the recent value? below is part of the code i hv started:

--code in Form2
Form1 frm1 = new Form1();
frm2txtbox.text=frm1.frm1txtbox.text;

i keep changing the text value of frm1txtbox at run time, but still frm2txtbox.text still empty. i've already set the modifier of the frm1txtbox into Public. need ur advise..

[gep13]

Hey,

By default, TextBox are set to private in C#, so in order to access the control on another form, you either have to change the protection level of the form, or create a public property that will set and get the text.

The code that you have above will always return null, since you are creating a new instance of Form2, which will always reset the Text Property of the form. However, I am going to assume that above it not all of the code.

Here is one way of doing it, but bear in mind there are other ways:

Main Form Code:

    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            SecondForm secondForm = new SecondForm();
            secondForm.Owner = this;
            secondForm.Show();
        }

        public string TextBoxText
        {
            get
            {
                return this.textBox1.Text;
            }
            set
            {
                this.textBox1.Text = value;
            }
        }
    }

Second Form Code:

    public partial class SecondForm : Form
    {
        public SecondForm()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MainForm mainForm = (MainForm)this.Owner;
            mainForm.TextBoxText = this.textBox1.Text;
        }
    }

Here I have used the Owner Property to expose a reference to the first form from the second one.

That make sense?

Gary

[tuhin]

Thank u Gray.By your help i solved my problem

[gep13]

Hey,


Glad to hear it.

If you question has been answered, remember to mark your thread as resolved. If you are unsure how to do that, there is a link in my signature explaining how.

Gary

[jbatman]

Thanks gep13

[gep13]

Ha ha, when tuhin responded, I just assumed that they were the original poster of the thread Glad it is working for you as well jbatman.

Gary