}
}
public class InsHierarchicalDataSourceView : HierarchicalDataSourceView
{
string viewPath;
InsTreeViewDataSource owner;
public InsHierarchicalDataSourceView(InsTreeViewDataSource owner, string viewPath)
{
this.viewPath = viewPath;
this.owner = owner;
}
public override IHierarchicalEnumerable Select()
{
//DataView dv = (DataView)this.owner.Select(DataSourceSelectArguments.Empty);
DataView dv = (DataView)this.owner.DataView;
InsHierarchicalEnumerable data = new InsHierarchicalEnumerable();
bool hasParent = false;
foreach (DataRowView crow in dv)
{
object[] array1 = crow.Row.ItemArray;
hasParent = false;
foreach (DataRowView prow in dv)
{
object[] array2 = prow.Row.ItemArray;
//子节点
string a = crow[owner.DataParentIdField].ToString();
//根节点
string b = prow[owner.DataIdField].ToString();
if (a == b)
{
hasParent = true;
break;
}
}
//添加根节点
if (!hasParent)
data.Add(new InsHierarchyData(owner.DataParentIdField, owner.DataIdField, owner.DisplayField, crow));
}
return data;
}
}
public class InsTreeViewDataSource : IHierarchicalDataSource
{
private InsHierarchicalDataSourceView view = null;
private string parentIdField;
private string idField;
private DataTable dataSource;
private string displayField;
public InsTreeViewDataSource(string parentIdField, string idField, string displayField,DataTable dataSource)
{
this.parentIdField = parentIdField;
this.idField = idField;
this.displayField = displayField;
this.dataSource = dataSource;
}
public DataView DataView
{
get
{
return this.dataSource.DefaultView;
}
}
HierarchicalDataSourceView IHierarchicalDataSource.GetHierarchicalView(string viewPath)
{
if (null == this.view)
this.view = new InsHierarchicalDataSourceView(this, viewPath);
return this.view;
}
public string DataParentIdField
{
get { return parentIdField; }
set { parentIdField = value; }
}
public string DataIdField
{
get { return idField; }
set { idField = value; }
}
public string DisplayField
{
get { return displayField; }
set { displayField = value; }
}
public event EventHandler DataSourceChanged;
}
客户端代码:
DataTable dt = null;//自定义数据源
InsTreeViewDataSource dataSource = new InsTreeViewDataSource("Parent_Id", "ID", "FULL_NAME", dt);
this.itvTree.DataSource = dataSource;
this.itvTree.DataBind();
