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Nullable Property

Returns or sets a value that specifies how the control handles empty values. Default is true.
Syntax
'Declaration
 
Public Property Nullable As Boolean
public bool Nullable {get; set;}
Remarks
This property controls how Value property reacts to empty text in control. If Nullable is set to True, the Value property will return DBNull if the entered text is empty. If Nullable is False, the Value property will return the last valid value.
Example
Following code sets some of the commonly used properties of UltraMaskedEdit in the Form's Load event

Imports Infragistics.Shared
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinMaskedEdit

  Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load

      ' Set the InputMask to the desired mask.
      Me.UltraMaskedEdit1.EditAs = EditAsType.Currency

      ' Optionally assign a culture to CultureInfo property.
      Me.UltraMaskedEdit1.CultureInfo = System.Globalization.CultureInfo.CreateSpecificCulture("en-GB")

      ' Optinally assign a DisplayStyle to desired display style.
      Me.UltraMaskedEdit1.DisplayStyle = EmbeddableElementDisplayStyle.OfficeXP

      ' Set the main appearance by using Appearance property.			
      Me.UltraMaskedEdit1.Appearance.TextHAlign = HAlign.Right
      Me.UltraMaskedEdit1.Appearance.FontData.Bold = DefaultableBoolean.True
      Me.UltraMaskedEdit1.Appearance.ForeColor = Color.DarkBlue

      ' Set the highlight colors. These colors get applied to the selected text
      ' in the masked edit.
      Me.UltraMaskedEdit1.SelectedTextBackColor = Color.LightBlue
      Me.UltraMaskedEdit1.SelectedTextForeColor = Color.Yellow

      ' Set the colors of the prompt and literal characters.
      Me.UltraMaskedEdit1.PromptCharacterAppearance.ForeColor = Color.Red
      Me.UltraMaskedEdit1.MaskLiteralsAppearance.ForeColor = Color.Green

      ' Set the Nullable to false and NullText to an appropriate string.
      Me.UltraMaskedEdit1.Nullable = False
  End Sub
using Infragistics.Shared;
using Infragistics.Win;
using Infragistics.Win.UltraWinMaskedEdit;
using System.Diagnostics;

private void Form1_Load(object sender, System.EventArgs e)
{
	// Set the InputMask to the desired mask.
	this.ultraMaskedEdit1.EditAs = EditAsType.Currency;

	// Optionally assign a culture to CultureInfo property.
	this.ultraMaskedEdit1.CultureInfo = System.Globalization.CultureInfo.CreateSpecificCulture( "en-GB" );

	// Optinally assign a DisplayStyle to desired display style.
	this.ultraMaskedEdit1.DisplayStyle = EmbeddableElementDisplayStyle.OfficeXP;

	// Set the main appearance by using Appearance property.			
	this.ultraMaskedEdit1.Appearance.TextHAlign = HAlign.Right;
	this.ultraMaskedEdit1.Appearance.FontData.Bold = DefaultableBoolean.True;
	this.ultraMaskedEdit1.Appearance.ForeColor = Color.DarkBlue;

	// Set the highlight colors. These colors get applied to the selected text
	// in the masked edit.
	this.ultraMaskedEdit1.SelectedTextBackColor = Color.LightBlue;
	this.ultraMaskedEdit1.SelectedTextForeColor = Color.Yellow;

	// Set the colors of the prompt and literal characters.
	this.ultraMaskedEdit1.PromptCharacterAppearance.ForeColor = Color.Red;
	this.ultraMaskedEdit1.MaskLiteralsAppearance.ForeColor = Color.Green;

	// Set the Nullable to false and NullText to an appropriate string.
	this.ultraMaskedEdit1.Nullable = false;
}
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also