This lesson describes the TextBox control
This control is a typical everyday text box. You can enter and modify text, click and drag to select text, press Ctrl+C to copy the selected text to the clipboard etc.
It is much simpler than the RichTextBox control described earlier in these tutorials.
It can use only one font, background color, and foreground color for all of its text.
It also cannot provide special formatting such as bullets, hanging indentation, and margins the way the RichTextBox control can.
Note: if you need those extra features, use a RichTextBox instead of a TextBox control.
Some of the most common TextBox properties are certainly MultiLine, MaxLength, ReadOnly and Text.
The MultiLine property determines whether the control displays multiple lines.
The MaxLength property determines the maximum number of characters the user can enter into the control.
The ReadOnly property determines whether the user can modify the control's text.
properties
The Text property simply gets or sets the text associated with the control.
' check if it's the initial text value
If TextBox1.Text.Contains--"your name here"-- Then
TextBox1.BorderStyle = BorderStyle.FixedSingle
TextBox1.ForeColor = Color.Red
TextBox1.Text = "The name is required"
Exit Sub
End If