/// <summary>
/// 呈现本元素的数据
/// </summary>
/// <param name="writer"></param>
protected override void RenderTagData(System.IO.TextWriter writer)
{
IEnumerable array = Utility.GetResolvedDataSource(this.From.GetValue());
int index = 0;
LoopIndex li = new LoopIndex(0);
if (this.Index != null)
{
this.Index.Value = li;
}
if (array != null)
{
IEnumerator list = array.GetEnumerator();
int groupSize = this.GroupSize == null ? 0 : TypeConvert.ToInt32(this.GroupSize.GetTextValue());
if (groupSize > 1)
{
list = Utility.SplitToGroup(list, groupSize);
}
list.Reset();
if (list.MoveNext())
{
li.IsLast = false;
while (!li.IsLast)
{
object v = list.Current;
li.Value = ++index;
li.IsFirst = (index == 1);
li.IsLast = !list.MoveNext();
if (this.Index != null)
{
this.Index.Reset();
}
if (this.Item != null)
{
this.Item.Value = v;
}
base.RenderTagData(writer);
}
}
}
if (index == 0 && this.Else != null)
{
//没有数据则输出Else节点的数据
this.Else.Render(writer);
}
}
/// <summary>
/// 呈现本元素的数据
/// </summary>
/// <param name="writer"></param>
protected override void RenderTagData(System.IO.TextWriter writer)
{
decimal from = Utility.ConverToDecimal(this.From.Value.GetValue());
decimal step = this.Step == null ? 1 : Utility.ConverToDecimal(this.Step.Value.GetValue());
decimal to = Utility.ConverToDecimal(this.To.Value.GetValue());
decimal index = from;
LoopIndex li = new LoopIndex(index);
if (this.Index != null)
{
this.Index.Value = li;
}
if (step >= 0)
{
while (index <= to)
{
li.Value = index;
li.IsFirst = (index == from);
li.IsLast = (index == to);
if (this.Index != null)
{
this.Index.Variable.Reset();
}
base.RenderTagData(writer);
index += step;
}
}
else
{
while (index >= to)
{
li.Value = index;
li.IsFirst = (index == from);
li.IsLast = (index == to);
if (this.Index != null)
{
this.Index.Variable.Reset();
}
base.RenderTagData(writer);
index += step;
}
}
}
