protected virtual IEnumerable GetData()
{
if (DataSource != null && IsBoundUsingDataSourceID)
{
throw new HttpException("Control bound using both DataSourceID and DataSource properties.");
}
if (DataSource != null)
{
return(DataSourceResolver.ResolveDataSource(DataSource, DataMember));
}
if (!IsBoundUsingDataSourceID)
{
return(null);
}
IEnumerable result = null;
DataSourceView boundDataSourceView = ConnectToDataSource();
boundDataSourceView.Select(DataSourceSelectArguments.Empty, delegate(IEnumerable data) { result = data; });
return(result);
}
IEnumerable GetData()
{
IEnumerable result;
#if NET_2_0
if (IsBoundUsingDataSourceID)
{
if (DataSourceID.Length == 0)
{
return(null);
}
if (boundDataSource == null)
{
return(null);
}
DataSourceView dsv = boundDataSource.GetView(String.Empty);
dsv.Select(SelectArguments, new DataSourceViewSelectCallback(SelectCallback));
result = data;
data = null;
}
else
#endif
result = DataSourceResolver.ResolveDataSource(DataSource, DataMember);
return(result);
}
protected virtual IDataSource GetDataSource()
{
if (IsBoundUsingDataSourceID)
{
Control ctrl = FindDataSource();
if (ctrl == null)
{
throw new HttpException(string.Format("A control with ID '{0}' could not be found.", DataSourceID));
}
if (!(ctrl is IDataSource))
{
throw new HttpException(string.Format("The control with ID '{0}' is not a control of type IDataSource.", DataSourceID));
}
return((IDataSource)ctrl);
}
IDataSource ds = DataSource as IDataSource;
if (ds != null)
{
return(ds);
}
IEnumerable ie = DataSourceResolver.ResolveDataSource(DataSource, DataMember);
return(new CollectionDataSource(ie));
}
protected override void OnDataBinding(EventArgs e)
{
base.OnDataBinding(e);
#if !NET_2_0
IEnumerable list = DataSourceResolver.ResolveDataSource(DataSource, DataMember);
PerformDataBinding(list);
#else
IEnumerable list = GetData().ExecuteSelect(DataSourceSelectArguments.Empty);
InternalPerformDataBinding(list);
#endif
}
protected override void CreateControlHierarchy(bool useDataSource)
{
Controls.Clear();
ItemList.Clear();
IEnumerable ds = null;
ArrayList keys = null;
if (useDataSource)
{
idx = 0;
if (IsBoundUsingDataSourceID)
{
ds = GetData();
}
else
{
ds = DataSourceResolver.ResolveDataSource(DataSource, DataMember);
}
keys = DataKeysArray;
keys.Clear();
}
else
{
idx = (int)ViewState ["Items"];
}
if ((ds == null) && (idx == 0))
{
return;
}
if (headerTemplate != null)
{
DoItem(-1, ListItemType.Header, null, useDataSource);
}
// items
int selected_index = SelectedIndex;
int edit_item_index = EditItemIndex;
ListItemType type;
if (ds != null)
{
string key = DataKeyField;
foreach (object o in ds)
{
if (useDataSource && !String.IsNullOrEmpty(key))
{
keys.Add(DataBinder.GetPropertyValue(o, key));
}
type = ListItemType.Item;
if (idx == edit_item_index)
{
type = ListItemType.EditItem;
}
else if (idx == selected_index)
{
type = ListItemType.SelectedItem;
}
else if ((idx & 1) != 0)
{
type = ListItemType.AlternatingItem;
}
DoItemInLoop(idx, o, useDataSource, type);
idx++;
}
}
else
{
for (int i = 0; i < idx; i++)
{
type = ListItemType.Item;
if (i == edit_item_index)
{
type = ListItemType.EditItem;
}
else if (i == selected_index)
{
type = ListItemType.SelectedItem;
}
else if ((i & 1) != 0)
{
type = ListItemType.AlternatingItem;
}
DoItemInLoop(i, null, useDataSource, type);
}
}
if (footerTemplate != null)
{
DoItem(-1, ListItemType.Footer, null, useDataSource);
}
ViewState ["Items"] = idx;
}
protected override void OnDataBinding(EventArgs e)
{
base.OnDataBinding(e);
/* Make sure Items has been initialised */
ListItemCollection listitems = Items;
listitems.Clear();
IEnumerable list;
#if NET_2_0
list = GetData();
#else
list = DataSourceResolver.ResolveDataSource(DataSource, DataMember);
#endif
if (list == null)
{
return;
}
foreach (object container in list)
{
string text = null;
string value = null;
if (DataTextField == String.Empty &&
DataValueField == String.Empty)
{
text = container.ToString();
value = text;
}
else
{
if (DataTextField != String.Empty)
{
text = DataBinder.Eval(container, DataTextField).ToString();
}
if (DataValueField != String.Empty)
{
value = DataBinder.Eval(container, DataValueField).ToString();
}
else
{
value = text;
}
if (text == null &&
value != null)
{
text = value;
}
}
if (text == null)
{
text = String.Empty;
}
if (value == null)
{
value = String.Empty;
}
ListItem item = new ListItem(text, value);
listitems.Add(item);
}
#if NET_2_0
RequiresDataBinding = false;
IsDataBound = true;
#endif
}
