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    <p>Here's the code used in one of our existing apps... not sure if it's ideal but it works well for us.</p> <pre><code>/// &lt;summary&gt; /// Attempts to convert a value using any customer TypeConverters applied to the member /// &lt;/summary&gt; /// &lt;param name="value"&gt;Object containing the value to be assigned&lt;/param&gt; /// &lt;param name="member"&gt;Member to be assigned to&lt;/param&gt; /// &lt;returns&gt;&lt;paramref name="value"/&gt; converted to the appropriate type&lt;/returns&gt; public static Object CustomTypeConversion ( object value, MemberInfo member ) { if ( value == null || value == DBNull.Value ) return value; if ( member == null ) throw new ArgumentNullException ( ); List&lt;TypeConverter&gt; converters = GetCustomTypeConverters ( member ); foreach ( TypeConverter c in converters ) { if ( c.CanConvertFrom ( value.GetType ( ) ) ) return c.ConvertFrom ( value ); } if ( member is PropertyInfo ) { PropertyInfo prop = member as PropertyInfo; return ConvertToNative( value , prop.PropertyType ); } return ConvertToNative ( value, member.MemberType.GetType ( ) ); } /// &lt;summary&gt; /// Extracts and instantiates any customer type converters assigned to a /// derivitive of the &lt;see cref="System.Reflection.MemberInfo"/&gt; property /// &lt;/summary&gt; /// &lt;param name="member"&gt;Any class deriving from MemberInfo&lt;/param&gt; /// &lt;returns&gt;A list of customer type converters, empty if none found&lt;/returns&gt; public static List&lt;TypeConverter&gt; GetCustomTypeConverters ( System.Reflection.MemberInfo member ) { List&lt;TypeConverter&gt; result = new List&lt;TypeConverter&gt;(); try { foreach ( TypeConverterAttribute a in member.GetCustomAttributes( typeof( TypeConverterAttribute ) , true ) ) { TypeConverter converter = Activator.CreateInstance( Type.GetType( a.ConverterTypeName ) ) as TypeConverter; if ( converter != null ) result.Add( converter ); } } catch { // Let it go, there were no custom converters } return result; } /// &lt;summary&gt; /// Attempts to cast the incoming database field to the property type /// &lt;/summary&gt; /// &lt;param name="value"&gt;Database value to cast&lt;/param&gt; /// &lt;param name="castTo"&gt;Type to cast to&lt;/param&gt; /// &lt;returns&gt;The converted value, if conversion failed the original value will be returned&lt;/returns&gt; public static object ConvertToNative ( object value , Type castTo ) { try { return Convert.ChangeType( value , castTo , System.Threading.Thread.CurrentThread.CurrentCulture ); } catch { return value; } } </code></pre> <p>Just call the CustomTypeConversion method and away you go... probably a <em>little</em> more than you need but being thorough isn't a crime (or is it?).</p>
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    1. POHow to lookup and invoke a .Net TypeConverter for a particular type?
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    1. USSteve Dignan
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    1. CONote that TypeConverter implementations can be added at runtime (via TypeDescriptor) - and the standard framework will pick that up - but reflection (above) *won't* pick up such additions; System.ComponentModel is designed to be very flexible at runtime...
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      1. USMarc Gravell
    2. COAh, good one... that issue has come up for us (yet) -- this code has been around our app for a while; it's good to have a fresh set of eyes review it. Thanks!
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    3. COTo be honest, in most cases you wouldn't ever see the difference... it isn't *that* common that people start adding runtime converters/descriptors. But it is possible (I've got an example on stackoverflow somewhere...)
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