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    <p>Other framework or libraries, or programming languages, have an object hierarchy where an instance of an object can copy the values of its fields and properties to other objects, from related, but, not exactly the same class, objects. Because, it has specific methods for copying fields or properties.</p> <pre><code>public class classRoot { public string Name { get; set; } public virtual void assignFrom(myRootClass objSource) { if (objSource != null) { this.Name = objSource.Name; } } public virtual void assignTo(ref myRootClass objDest) { if (objDest != null) { objDest.Name = this.Name; } } } public class classFoo: classRoot { public Color Color { get; set; } public override void assignFrom(myRootClass objSource) { updateChanges(); } public override void assignTo(ref myRootClass objDest) { updateChanges(); } } public class classBar: classRoot { public int Age { get; set; } public override void assignFrom(myRootClass objSource) { updateChanges(); } public override void assignTo(ref myRootClass objDest) { updateChanges(); } } public class classDemo { public void anyMethod() { classFoo objFoo = new classFoo("Foo1"); classFoo objBar = new classBar("Bar2"); MessageBox.Show("Name: " + objFoo); objBar.AssignTo(ref objFoo); MessageBox.Show("Name: " + objFoo); } } </code></pre> <p>Don't confuse this concept, with the make a "clone()", or make a "deepCopy()" or make "shallowCopy()", altought in some cases are solved with this function.</p> <p>Those functions help when you want to make a new object with the same class, and you want to copy data from an existing object to another existing object, where the classes are related, but may not be exactly the same thing.</p>
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    1. POWhich pattern to use to copy all properties from instance of parent class to instance of child class?
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    1. COOk and in the assignFrom/assignTo I would then write like: this.Name = myRootClass.Name? (including the same constraints and potential source of error as in fiver's suggestion above)
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    2. CO@bonifaz, I add some extra code, its just an example, not finished code ;-)
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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