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I have a user control with a ComboBox and a TextBox. Everything is working great except I noticed that from my user control's instance object, I can access those two controls. They shouldn't be accessible except via my own exposed properties.
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User controls. User controls are containers into which you can put markup and Web server controls. You can then treat the user control as a unit and define properties and methods for it. Custom controls. A custom control is a class that you write that derives from Control or WebControl.
Definition of C# User Control. C# user control is defined as an implementation in programming language of C# to provide an empty control and this control can be leveraged to create other controls. This implementation provides additional flexibility to re-use controls in a large-scale web project.
A UserControl is a collection of controls placed together to be used in a certain way. For example you can place a GroupBox that contains Textbox's, Checkboxes, etc. This is useful when you have to place the same group of controls on/in multiple forms or tabs.
You can use the x:FieldModifier attribute on your controls, thusly:
<TextBox x:Name="textBox1" x:FieldModifier="private" /> Interestingly the MSDN page for x:FieldModifier doesn't give "private" as a valid value for the attribute, but I've tested it and it works.
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