public string ConvertToCommonType( string type )
{
if (string.IsNullOrEmpty( type ))
type = "c:string";
else
{
if (type.StartsWith( "c:" ))
type = type.Substring( 2 );
if ("decimal".Equals(type))
type = "double";
else if ("char".Equals(type))
type = "string";
type = "c:" + type;
}
return type;
}