public bool MoveNext()
{
// se não tem mais elementos, não tem mais grupos
if (!en.MoveNext())
return false;
var page = new ArrayList(pageSize);
int n = pageSize;
do
{
page.Add(en.Current);
} while (--n > 0 && en.MoveNext());
this.currentPage = new PageEnumerable(page, pageIndex++);
return true;
}
/// <summary>
/// 读取模型实例列表。
/// </summary>
/// <param name="cancellationToken">取消标记。</param>
/// <returns>返回模型实例列表。</returns>
protected async Task <IPageEnumerable <TModel> > LoadPageAsync(CancellationToken cancellationToken = new CancellationToken())
{
var models = new PageEnumerable <TModel>();
models.Page = PageIndex ?? 1;
models.PageSize = Size ?? 20;
using (var reader = await _db.ExecuteReaderAsync(_sqlGenerator.Query(this).ToString(), cancellationToken: cancellationToken))
{
while (await reader.ReadAsync(cancellationToken))
{
models.Add(Entity.Read <TModel>(reader));
}
if (await reader.NextResultAsync(cancellationToken) && await reader.ReadAsync(cancellationToken))
{
models.Size = reader.GetInt32(0);
}
}
return(models);
}
/// <summary>
/// 读取模型实例列表。
/// </summary>
/// <returns>返回模型实例列表。</returns>
protected IPageEnumerable <TModel> LoadPage()
{
var models = new PageEnumerable <TModel>();
models.Page = PageIndex ?? 1;
models.PageSize = Size ?? 20;
using (var reader = _db.ExecuteReader(_sqlGenerator.Query(this).ToString()))
{
while (reader.Read())
{
models.Add(Entity.Read <TModel>(reader));
}
if (reader.NextResult() && reader.Read())
{
models.Size = reader.GetInt32(0);
}
}
return(models);
}
public bool MoveNext()
{
// se não tem mais elementos, não tem mais grupos
if (!en.MoveNext())
{
return(false);
}
var page = new ArrayList(pageSize);
int n = pageSize;
do
{
page.Add(en.Current);
} while (--n > 0 && en.MoveNext());
this.currentPage = new PageEnumerable(page, pageIndex++);
return(true);
}
public void Reset()
{
this.en = this.source.GetEnumerator();
this.currentPage = null;
this.pageIndex = 0;
}
public void Reset()
{
this.en = this.source.GetEnumerator();
this.currentPage = null;
this.pageIndex = 0;
}
