C#.Net Textbox

C#.Net TextBox control is used to display, or accept input from user. Provide the user with an area to write/edit text.

Common properties are:
Attributes	Description
AutoCompleteCustomSource	To use when the AutoCompleteSourceproperty is set to Custom Source.
AutoCompleteMode	Options that controls how automatic completion works for the TextBox.
BackColor	To change textbox background color.
BorderStyle	You can set 3 different types of border style i.e. None, FixedSingle and fixed3d
CharacterCasing	Use to modify the case of characters as they are typed.
Enabled	Set to false to make the text box read-only.
Font	Change the font of the text displayed by the control.
ForeColor	Change the foreground color of the control.
MaxLength	Set the maximum length for the text in the control.
Multiline	To change the textbox from single line to multi line mode.
PasswordChar	Generally use to enter passwords.
Readonly	Tells whether the text in the form can be edited.
RightToLeft / TextAlign	To change the alignment of the textbox. eg Left, Center, Right.
ScrollBars	Specify how scroll bars should appear in a multiline TextBox control. None, Horizontal, Vertical, Both.
TabIndex	Specify the tab order of the control.
Text	Specify the text display in the text box.
Visible	Tells whether the text box is visible inside the form.
WordWrap	Automatically transfer cursor to the next line.
Height/Width	To change textbox height and width.

Common Methods are:
Attributes	Description
AppendText	Appends text to the current text of a text box.
Clear	Clears all text from the text box control.
Copy	Copies the current selection in the text box to the Clipboard.
Cut	Moves the current selection in the text box to the Clipboard.
Paste	Replaces the current selection in the text box with the contents of the Clipboard.
ResetText	Resets the Text property to its default value.
Undo	Undoes the last edit operation in the text box.

Common Events are:
Attributes	Description
Click	When the control is clicked.
DoubleClick	When the control is double-clicked.
Enter	Control got focus or active.
Leave	Control lost focus or no longer active.
KeyDown, KeyPress, KeyUp	Keyboard Events.
MouseDown, MouseEnter, MouseHover, MouseLeave, MouseMove, MouseUp	Mouse Events.
TextChanged	Event raised when the value of the text changed.
Validated
Validating

Example 1: Identify the key pressed.

private void textBox1_keydown(object sender, keyEventArgs e)
{
    if(e.KeyCode == Keys.Enter)
    {
        MessageBox.Show("You Press Enter Key");
    }
}

Example 2: Display Text in Label while changing in textbox.

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Updated: 30-Jan-20

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