public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (value != null && !(value is SortExpressionCollection))
{
throw new Exception(string.Format("Unable to convert type '{0}'!", value.GetType()));
}
SortExpressionCollection sortExpressionCollection = value as SortExpressionCollection;
if (destinationType != typeof(string))
{
return(base.ConvertTo(context, culture, value, destinationType));
}
if (value == null)
{
return(string.Empty);
}
StringBuilder stringBuilder = new StringBuilder();
TypeConverter converter = TypeDescriptor.GetConverter(typeof(SortExpression));
foreach (SortExpression sortExpression in sortExpressionCollection)
{
if (stringBuilder.Length > 0)
{
stringBuilder.Append(';');
}
string str = (string)converter.ConvertTo(sortExpression, typeof(string));
stringBuilder.Append(str);
}
return(stringBuilder.ToString());
}
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value == null)
{
return(new SortExpressionCollection());
}
string str = value as string;
if (str == null)
{
return(base.ConvertFrom(context, culture, value));
}
if (str.Length < 1)
{
return(new SortExpressionCollection());
}
string[] strArrays = str.Split(new char[] { ';' });
if ((int)strArrays.Length < 1)
{
return(new SortExpressionCollection());
}
SortExpressionCollection sortExpressionCollection = new SortExpressionCollection();
TypeConverter converter = TypeDescriptor.GetConverter(typeof(SortExpression));
string[] strArrays1 = strArrays;
for (int i = 0; i < (int)strArrays1.Length; i++)
{
SortExpression sortExpression = converter.ConvertFrom(strArrays1[i]) as SortExpression;
if (sortExpression != null)
{
sortExpressionCollection.Add(sortExpression);
}
}
return(sortExpressionCollection);
}
public static string Serialize(SortExpressionCollection collection)
{
return((string)TypeDescriptor.GetConverter(typeof(SortExpressionCollection)).ConvertTo(collection, typeof(string)));
}
public string Serialize()
{
return(SortExpressionCollection.Serialize(this));
}
