Draw border around any controls in C#

This topic helps to draw border to any controls in C#.
Here we show how to draw border around the TextBox control in C#.

C#.NET – Draw border around any controls in C#

C# is an Object Oriented Programming language from Microsoft that mainly combines the computing power of C++ with the programming ease of Visual Basic.
C# is mainly based on C++.
The most recent version is C#4.0.
C# language is simple, modern, general-purpose, object-oriented language.

Graphics Class – Draw border around any controls in C#

Graphics class encapsulates a GDI+ drawing surface.
This class cannot be inherited.

Namespace: System.Drawing

Assembly: System.Drawing (in System.Drawing.dll)

Syntax for Graphics Class

public sealed class Graphics : MarshalByRefObject, 
	IDeviceContext, IDisposable

1 2	public sealed class Graphics : MarshalByRefObject, IDeviceContext, IDisposable

Draw border around the Textbox control or any controls in C# – Working

First you have to add a TextBox control to the form for drawing border around the TextBox in C#.
Then we draw border around the TextBox control using graphics class, this is done by drawing rectangle around the border of the TextBox controls in C#.

Draw border around the Textbox control or any controls in C# – Complete Code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            using (Graphics g = e.Graphics)
            {

                using (Pen pen = new Pen(Color.Red, 2))
                {

                    foreach (Control ctr in this.Controls)
                    {

                        if (ctr is TextBox)
                        {
                            g.DrawRectangle(pen, new Rectangle(ctr.Location, ctr.Size));

                        }

                    }

                }

            }
        }
    }
}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication1

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void Form1_Paint(object sender, PaintEventArgs e)

{

using (Graphics g = e.Graphics)

{

using (Pen pen = new Pen(Color.Red, 2))

{

foreach (Control ctr in this.Controls)

{

if (ctr is TextBox)

{

g.DrawRectangle(pen, new Rectangle(ctr.Location, ctr.Size));

}

Note: Draw borders around other controls, just change name ‘TextBox’

If you have any doubts in how to create border around any controls in C#, please feel free to contact us… our mail id: codingangel@gmail.com