Here is some code to create a replacement of the standard Edit control in VB .NET. I've added some properties, that could be useful. Besides that, it could be a good way to show you how to create a user control on your own in VB .NET.
-MinLength: Minimum length that the textbox must contain.
-AcceptedType: Any, Rounded numbers or Broken numbers.
-AcceptNumbersOnly: Only accept numbers from 0 to 9
-ErrorControl: If an error occurs, for example when you set AcceptedType to Rounded number, and you enter a broken number, the error message will be shown in this control.
-ErrorControlForeColor: The forecolor of the error message in the error control.
-ErrorKeyPress: Check for error in control on KeyPress event, or (internally) on the OnValidating event.
-ErrorMessageShow: If set to true, the error message will be shown in a messagebox when the ErrorControl property is not set.
-ErrorShowTooltip: Show the error message in the tooltip
-ErrorTBBackColor: BackColor of the Edit control when an error occurs.
ErrorTBForeColor: ForeColor of the Edit control when an error occurs.
-BackColorNormal and ForeColorNormal: replacements of the standard BackColor and ForeColor properties.
-IsRequired: Is this Edit control required to fill
-BackColorRequired: The backcolor of a required control.
-CanBeEmpty: Sometimes when a value is required, you want to allow an empty string. That is possible when this property is set to true (Maybe I should remove this property...)
-ErrorValidate: Here you can edit the ErrorMessage, and set the Validated variable to true or false.
Pick the code, and enjoy. Please report some bugs in here.