Add multiple rectangles to maximum size and location of panel in

Question

hello I need to draw rectangle within panel and panel size(890,850),location(274,12) in this area only i need to draw rectangle inside this area,if overlaps one another that also okay keep that old rectangles untill i click reset button. if the user given data exceed panel size and location show message box in c# windows application....

Sachin Singh · Answer

it is already like that please try the code once

Sachin Singh · Answer

Try to optimize it, i have below solution for you. public partial class Form1 : Form { List Rectangles = new List (); Pen pen1; bool IsValid = false ; int x = 274, y = 12, w = 100, h = 200; public Form1() { InitializeComponent(); panel1.Height = 890; panel1.Width = 850; } private void button1_Click(object sender, EventArgs e) { if (Validate()) { panel1.Invalidate(); } } private void panel1_Paint(object sender, PaintEventArgs e) { if (IsValid){ Rectangle rect = new Rectangle(x, y, w, h); Rectangles.Add(rect); foreach (Rectangle re in Rectangles) { e.Graphics.DrawRectangle(Pens.Black, re); } } } private bool Validate() { x = Convert.ToInt32(textBox3.Text); y = Convert.ToInt32(textBox4.Text); w = Convert.ToInt32(textBox2.Text); h = Convert.ToInt32(textBox1.Text); if (x>274||y>12||w>850||h>890){ MessageBox.Show( "Please Enter appropriate value ex: x ); IsValid = false ; return IsValid; } IsValid = true ; return IsValid; } private void button2_Click(object sender, EventArgs e) { textBox1.Text = "" ; textBox2.Text = "" ; textBox3.Text = "" ; textBox4.Text = "" ; IsValid = false ; panel1.Invalidate(); } }

S J · Answer

how to do Undo/redo functionality when undo button clicks draw rectangles to be go undo,like same when we use in our paint like that only in c# windows application