variable that can't be modified

Question

Does C# allow a variable that can\'t be modified? It\'s like a const, but instead of having to assign it a value at declaration, the variable does not have any

Answer 1

You can roll your own using a custom setter (but don't use Object unless you have to, choose the correct class):

private Object myObj = null;
private Boolean myObjSet = false;

public Object MyObj
{
    get { return this.myObj; }
    set 
    { 
        if (this.myObjSet) throw new InvalidOperationException("This value is read only");
        this.myObj = value;
        this.myObjSet = true;
    }
}

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EDIT:

This doesn't stop the private field being changed by the class internals.