C# | TextBox Controls

In Windows forms, TextBox plays an important role. With the help of TextBox, the user can enter data in the application, it can be of a single line or of multiple lines. The TextBox is a class and it is defined under System.Windows.Forms namespace. In C#, you can create a TextBox in two different ways: 1. Design-Time: It is the simplest way to create a TextBox as shown in the following steps:

• Step 1: Create a windows form. As shown in the below image: Visual Studio -> File -> New -> Project -> WindowsFormApp
• Step 2: Drag the TextBox control from the ToolBox and drop it on the windows form. You can place TextBox anywhere on the windows form according to your need.
• Step 3: After drag and drop you will go to the properties of the TextBox control to modify the TextBox design according to your requirement.

2. Run-Time: It is a little bit trickier than the above method. In this method, you can create your own textbox using the TextBox class.

• Step 1 : Create a textbox using the TextBox() constructor provided by the TextBox class.

// Creating textbox
TextBox Mytextbox = new TextBox();

• Step 2 : After creating TextBox, set the properties of the TextBox provided by the TextBox class.

 
// Set location of the textbox
Mytextbox.Location = new Point(187, 51);

// Set background color of the textbox
Mytextbox.BackColor = Color.LightGray;

// Set the foreground color of the textbox
Mytextbox.ForeColor = Color.DarkOliveGreen;

// Set the size of the textbox
Mytextbox.AutoSize = true;

// Set the name of the textbox
Mytextbox.Name = "text_box1";

• Step 3 : And last add this textbox control to form using Add() method.

// Add this textbox to form
this.Controls.Add(Mytextbox);

• Example:

CSharp

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

namespace my {

public partial class Form1 : Form {

    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {

        // Creating and setting the properties of Lable1
        Label Mylablel = new Label();
        Mylablel.Location = new Point(96, 54);
        Mylablel.Text = "Enter Name";
        Mylablel.AutoSize = true;
        Mylablel.BackColor = Color.LightGray;

        // Add this label to form
        this.Controls.Add(Mylablel);

        // Creating and setting the properties of TextBox1
        TextBox Mytextbox = new TextBox();
        Mytextbox.Location = new Point(187, 51);
        Mytextbox.BackColor = Color.LightGray;
        Mytextbox.ForeColor = Color.DarkOliveGreen;
        Mytextbox.AutoSize = true;
        Mytextbox.Name = "text_box1";

        // Add this textbox to form
        this.Controls.Add(Mytextbox);
    }
}
}

• Output: