C# (CSharp) textBox Examples

Programming Language: C# (CSharp)

Class/Type: textBox

Examples at hotexamples.com: 3

The TextBox control is a part of the System.Windows.Forms library in C#. It is used to display and accept user input in graphical user interfaces. The control can be customized according to the need of the application by setting properties like background, foreground, font style, and size.

Example 1: Simple TextBox

// Create a new instance of the TextBox control
TextBox textBox = new TextBox(); 

// Set the location and size of the textBox control
textBox.Location = new Point(20, 20);
textBox.Size = new Size(150, 20);

// Add the textBox control to the form
this.Controls.Add(textBox);

This code creates a new instance of the TextBox control and sets its location and size. It then adds the control to the form.

Example 2: Password TextBox

// Create a new instance of the TextBox control
TextBox passwordBox = new TextBox(); 

// Set the location and size of the passwordBox control
passwordBox.Location = new Point(20, 20);
passwordBox.Size = new Size(150, 20);

// Set the passwordChar property to '*' to hide the input from the user
passwordBox.PasswordChar = '*';

// Add the passwordBox control to the form
this.Controls.Add(passwordBox);

This code creates a password TextBox by setting the passwordChar property to hide the user input.

Example 3: Numeric-only TextBox

// Create a new instance of the TextBox control
TextBox numericBox = new TextBox(); 

// Set the location and size of the numericBox control
numericBox.Location = new Point(20, 20);
numericBox.Size = new Size(150, 20);

// Set the textChanged event to filter non-numeric characters
numericBox.TextChanged += new EventHandler(delegate (object sender, EventArgs e)
{
    if (!int.TryParse(numericBox.Text, out int text))
    {
        numericBox.Text = "";
    }
});

// Add the numericBox control to the form
this.Controls.Add(numericBox);

This code creates a TextBox control that only accepts numeric inputs. It uses the textChanged event to filter out non-numeric characters. The package library used for the TextBox control is "System.Windows.Forms".

C# (CSharp) textBox - 3 examples found. These are the top rated real world C# (CSharp) examples of textBox extracted from open source projects. You can rate examples to help us improve the quality of examples.

Frequently Used Methods

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setText(2)

Delete(1)

KeyDisable(1)

getText(1)

Example #1

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File: TextBox.cs Project: Arkasian/GothicUntoldChapter

        public TextBox(int id, String text, String font, Vec2i position, Texture parent, ColorRGBA color, int resetKey, int startKey, int sendKey)
            : base(id, position)
        {
            this.parent = parent;

            //Creation:
            Process process = Process.ThisProcess();

            thisView = zCView.Create(Process.ThisProcess(), 0, 0, 0x2000, 0x2000);
            setFont(font);

            tB = new textBox(thisView, process);
            tB.setText(text);
            tB.resetKey        = resetKey;
            tB.startWritingKey = startKey;
            tB.sendKey         = sendKey;

            tB.vt.PosX    = this.position.X;
            tB.vt.PosY    = this.position.Y;
            tB.SendInput += new EventHandler <EventArgs>(tbSended);


            tB.Inputenabled = false;


            setColor(color);
        }

Example #2

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File: Utilidades.cs Project: sociio1908/CharlyRepo

        public static bool ValidarForm(Control Objform, ErrorProvider gp)
        {
            bool corredor = false;

            foreach (Control item in Objform.Controls)
            {
                if (item.Controls.Count > 0)
                {
                    bool corredor2 = ValidarForm(item, gp);
                    if (corredor2)
                    {
                        corredor = true;
                    }
                }
                if (item is textBox)
                {
                    textBox obj = (textBox)item;
                    if (obj.Validar)
                    {
                        if (string.IsNullOrEmpty(obj.Text.Trim()))
                        {
                            gp.SetError(obj, "Campo obligatorio.");
                            corredor = true;
                        }
                        else
                        {
                            gp.SetError(obj, "");
                        }
                    }
                }
            }
            //  MessageBox.Show("REgggggTONRO: "+corredor);
            return(corredor);
        }

Example #3

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File: 221633-4334836-9139693-2.cs Project: shendongnian/code

    public static int VisibleCharCount(this textBox textBox)
    {
        int count = 0;

        do
        {
            count++;
            var testString  = new string('X', count);
            var stringWidth = System.Drawing.Graphics.MeasureString(testString, textBox.Font);
        } while (stringWidth < textBox.Width);

        if (stringWidth == textBox.Width)
        {
            return(count);
        }
        else
        {
            return(count - 1);
        }
    }