public IColumnBuilder <TItem> Add(Expression <Func <TItem, object> > expression)
{
var memberAccessor = new MemberAccessor <TItem>(expression);
var column = new ColumnBuilder <TItem>(this, memberAccessor);
_columns.Add(column);
return(column);
}
private void GenerateColumns()
{
var memberInfos =
typeof(TItem).GetMembers(BindingFlags.Public | BindingFlags.Instance)
.Where(x => x.MemberType == MemberTypes.Field || x.MemberType == MemberTypes.Property);
var members = new List <Member>();
foreach (var memberInfo in memberInfos)
{
var columnFormat = memberInfo
.GetCustomAttributes(true)
.SingleOrDefault(x => x is ColumnAttribute) as ColumnAttribute;
if (columnFormat is null)
{
members.Add(new Member {
Index = 0, MemberInfo = memberInfo, ColumnAttribute = null
});
}
if (columnFormat != null)
{
members.Add(new Member {
Index = columnFormat.Index, MemberInfo = memberInfo, ColumnAttribute = columnFormat
});
}
}
foreach (var member in members.OrderBy(x => x.Index))
{
var memberAccessor = new MemberAccessor <TItem>(member.MemberInfo);
var column = new ColumnBuilder <TItem>(this, memberAccessor);
_columns.Add(column);
if (member.ColumnAttribute == null)
{
continue;
}
if (member.ColumnAttribute.Header != null)
{
column.NameAs(member.ColumnAttribute.Header);
}
column
.HorizontalAlignmentAs(member.ColumnAttribute.HorizontalAlignment)
.VerticalAlignmentAs(member.ColumnAttribute.VerticalAlignment)
.FormatAs(member.ColumnAttribute.Format);
}
}