根据控件可见性C＃.Net动态自动调整窗口大小

Question

While creating a windows form application, initially I am keeping all the controls like Button, TextBox, Label invisible. Once, the user do a proper activity like select correct directory then the next control appears (In general, the user won't be having much freedom but to give a correct directory). I know, there is no sense keeping other control invisible all the time but I want to do it as my learning process.

Now, the question is, how do I make the form change it's size each time a new control appears.

eg at start only one TextBox and Browse button are visible. Here the windows form should scaled to the visible controls only. Then once user gives a proper directory path and the program recognizes it, next control like a button and a richTextBox will show up and the form then should change itself dynamically to fit new controls.

Thanks for help,

Answer 1

This is all simple enough, you can alter the visibility of a control with the Visible property, and change the size of your form by altering the Height and Width properties of the form.

If you create a form named Form1 , add two buttons named button1 and button2 and copy and paste the following code, this will demonstrate both resizing the form and changing the visibility of controls.

button2 gets set to invisible as the form loads, and the width and height get set to 100px each. Whenever button1 is pressed, the form is resized and button2 is set to visible:

using System;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            button2.Visible = false;

            Width = 100;
            Height = 100;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Width = 200;
            Height = 200;
            button2.Visible = true;
        }
    }
}