Mercurial > pub > bltoolkit
diff Tools/DocGen/Content/Doc/ComponentModel/ObjectBinder.htm @ 0:f990fcb411a9
Копия текущей версии из github
author | cin |
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date | Thu, 27 Mar 2014 21:46:09 +0400 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Tools/DocGen/Content/Doc/ComponentModel/ObjectBinder.htm Thu Mar 27 21:46:09 2014 +0400 @@ -0,0 +1,25 @@ +<p class="j"> +The <b>ObjectBinder</b> component has been designed to simplify binding controls on a form to objects for FW 1.x. +Since Microsoft has released FW 2.0 we can use the <b>BindingSource</b> component to bind controls to objects. +However the <b>ObjectBinder</b> still can be useful as it supports a few features which are not available for the <b>BindingSource</b>. +Those features are: +</p> + +<ul> +<li><p class="j">Support for field binding along with property binding.</p></li> +<li><p class="j">Support for inner class field and property binding such as <i>Order.Address.Line1</i>.</p></li> +<li><p class="j">Support for the <i>ObjectView</i> feature which is available by assigning an object view type to the +<b>ObjectBinder.ObjectViewType</b> property. An object view is an object that implements the <b>IObjectView</b> interface. +This interface includes only one property - <i>object <b>Object</b> { get; set; }</i>. +An object view can implement additional properties based on the assosiated object. +The <b>ObjectBinder</b> will combine all of these properties with main object properties and create a single <b>PropertyDescriptor</b> collection. +This feature can be used to separate UI presentation logic from business model objects and to keep them clean. +ObjectView should be a stateless, lightweight object as its single instance can be assigned to many assosiated objects.</p></li> +<li><p class="j">The <b>ObjectBinder</b> is optimized for high performance applications such real-time multithreaded message processing and +distribution banking systems. So it does not use reflection to access objects. +The standard way (which is used by the <b>BindingSource</b>) is to call the <b>TypeDescriptor.GetProperties</b> method +to get a <b>PropertyDescriptor</b> collection. This method creates property descriptors that access object properties by reflection. +The <b>ObjectBinder</b> has its own mechanism to avoid unnessasy reflection and boxing/unboxing operations.</p></li> +</ul> + +<p class="j">The dev version of BLToolkit contains a demo project (Demo\WinForms) showing the use of the <b>ObjectBinder</b>.</p>