Specifies whether a text field can be deleted by the end-user while a TX Text Control document is being edited. The default setting of this property is true.
public bool Deleteable { get; set; }
The following example uses the 'Text
TXTextControl.TextField field = new TXTextControl.TextField("Product");
field.Name = "product";
field.DoubledInputPosition = true;
field.Deleteable = false;
field.Editable = false;
field.ShowActivated = true;
textControl1.TextFields.Add(field);
Text Fields and Hypertext Links - Editing Marked Text Fields.