Wednesday, 30 November 2011 10:23 by
mhaIf you’re a ASP.NET (WebForm) web developer and you worry about Viewstate (which you should!) – you might find this Firefox add-on very useful:
https://addons.mozilla.org/en-US/firefox/addon/aspnet-viewstate-viewer/?src=api
The add-on displays the viewstate of the current ASP.NET page in the statusbar – very handy when trying to limit the Viewstate size.
8fbda784-fea7-42db-bbe7-9d73651a37e6|0|.0
Monday, 28 November 2011 09:53 by
mhaOften you need to make a copy of a LinqToSQL (Entity) Object with all the values intact. For some reason the .NET framework does not have a method for this.
However the below code will make a “clean copy” of a LinqToSQL object.
// Instanciate new object and copy all properties from old Bill ("clean" copy)
Bill billNew = (Bill)Entity.Copy(billOld, new Bill());
And the method actually doing the work, looks like this:
public static class Entity
{
/// <summary>
/// Copies an LinqToSQL entity object ("clean" copy)
/// </summary>
/// <param name="source">Source Entity object</param>
/// <param name="destination">Destination Entity object</param>
/// <returns>Destination Entity object with all properties copied from Source object</returns>
public static object Copy(object source, object destination)
{
System.Reflection.PropertyInfo[] sourceProps = source.GetType().GetProperties();
System.Reflection.PropertyInfo[] destinationProps = destination.GetType().GetProperties();
foreach (System.Reflection.PropertyInfo sourceProp in sourceProps)
{
ColumnAttribute column = Attribute.GetCustomAttribute(sourceProp, typeof(ColumnAttribute)) as ColumnAttribute;
if (column != null && !column.IsPrimaryKey)
{
foreach (System.Reflection.PropertyInfo destinationProp in destinationProps)
{
if (sourceProp.Name == destinationProp.Name && destinationProp.CanWrite)
{
destinationProp.SetValue(destination, sourceProp.GetValue(source, null), null);
break;
}
}
}
}
return destination;
}
}
96899a54-75bc-435e-afbf-bb53c85e6c6b|1|4.0