/// <summary>
/// Handles the RequestTreeItems event of the grid control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="args">The <see cref="Syncfusion.Windows.Controls.Grid.GridTreeRequestTreeItemsEventArgs"/> instance containing the event data.</param>
static void grid_RequestTreeItems(object sender, GridTreeRequestTreeItemsEventArgs args)
{
GridTreeControl gridTree = sender as GridTreeControl;
//code showing how to use LoadAllAtStartUp property....
if (gridTree.InternalGrid.LoadAllAtStartUp && args.ParentItem == null)
{
//need to load all the GridNodes into g.Nodes....
IEnumerable <EmployeeInfo> rootNodes = viewModel.GetReportees(-1);
foreach (EmployeeInfo e in rootNodes)
{
gridTree.InternalGrid.RootNodes.Add(Populate(gridTree, e, null, 0, null));
}
return;
}
if (args.ParentItem == null)
{
//get the root list - get all employees who have no boss
args.ChildList = viewModel.GetReportees(-1); //get all employees whose boss's id is -1 (no boss)
}
else
{ //get the children of the parent object
EmployeeInfo emp = args.ParentItem as EmployeeInfo;
if (emp != null)
{
//get all employees that report to the parent employee
args.ChildList = viewModel.GetReportees(emp.ID);
}
}
}
/// <summary>
/// Handles the RequestTreeItems event of the AssociatedObject control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="args">The <see cref="Syncfusion.Windows.Controls.Grid.GridTreeRequestTreeItemsEventArgs"/> instance containing the event data.</param>
void AssociatedObject_RequestTreeItems(object sender, GridTreeRequestTreeItemsEventArgs args)
{
//when ParentItem is null, you need to set args.ChildList to be the root items...
if (args.ParentItem == null)
{
args.ChildList = (IEnumerable)viewModel.DriveDetails;
}
else //if ParentItem not null, then set args.ChildList to the child items for the given ParentItem.
{
FileInfoModel item = args.ParentItem as FileInfoModel;
args.ChildList = viewModel.GetChildFolderContent(item);
}
}
/// <summary>
/// Handles the RequestTreeItems event of the AssociatedObject control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="args">The <see cref="Syncfusion.Windows.Controls.Grid.GridTreeRequestTreeItemsEventArgs"/> instance containing the event data.</param>
void AssociatedObject_RequestTreeItems(object sender, GridTreeRequestTreeItemsEventArgs args)
{
//when ParentItem is null, you need to set args.ChildList to be the root items...
if (args.ParentItem == null) //requesting the root list...
{
//get all employees whose boss's id is -1 (no boss)
EmployeesDataSet.EmployeesDataTable dt = viewModel.dataAdapter.GetReportees(-1);
args.ChildList = dt.DefaultView;
}
else //if ParentItem not null, then set args.ChildList to the child items for the given ParentItem.
{ //get the children of the parent object
DataRowView drv = args.ParentItem as DataRowView;
EmployeesDataSet.EmployeesDataTable dt = viewModel.dataAdapter.GetReportees((int)drv["ID"]);
args.ChildList = dt.DefaultView; //get all employees whose boss's id is -1 (no boss)
}
}
/// <summary>
/// Handles the RequestTreeItems event of the AssociatedObject control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="args">The <see cref="Syncfusion.Windows.Controls.Grid.GridTreeRequestTreeItemsEventArgs"/> instance containing the event data.</param>
void AssociatedObject_RequestTreeItems(object sender, GridTreeRequestTreeItemsEventArgs args)
{
if (args.ParentItem == null)
{
//get the root list - get all employees who have no boss
args.ChildList = viewModel.EmployeeDetails.Where(x => x.ReportsTo == -1); //get all employees whose boss's id is -1 (no boss)
}
else //if ParentItem not null, then set args.ChildList to the child items for the given ParentItem.
{ //get the children of the parent object
EmployeeInfo emp = args.ParentItem as EmployeeInfo;
if (emp != null)
{
//get all employees that report to the parent employee
args.ChildList = viewModel.GetReportees(emp.ID);
}
}
}
/// <summary>
/// Handles the RequestTreeItems event of the InternalGrid control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="args">The <see cref="Syncfusion.Windows.Controls.Grid.GridTreeRequestTreeItemsEventArgs"/> instance containing the event data.</param>
void InternalGrid_RequestTreeItems(object sender, GridTreeRequestTreeItemsEventArgs args)
{
//when ParentItem is null, you need to set args.ChildList to be the root items...
if (args.ParentItem == null)
{
//get the root list - get all employees who have no boss
//get all employees whose boss's id is -1 (no boss)
args.ChildList = viewModel.CarDetails.Where(x => x.ReportsTo == -1);
}
else //if ParentItem not null, then set args.ChildList to the child items for the given ParentItem.
{ //get the children of the parent object
CarInfo car = args.ParentItem as CarInfo;
if (car != null)
{
//get all employees that report to the parent employee
args.ChildList = viewModel.CarDetails.Where(x => x.ReportsTo == car.ID);
}
}
}
/// <summary>
/// Handles the RequestTreeItems event of the AssociatedObject control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="args">The <see cref="Syncfusion.Windows.Controls.Grid.GridTreeRequestTreeItemsEventArgs"/> instance containing the event data.</param>
void AssociatedObject_RequestTreeItems(object sender, GridTreeRequestTreeItemsEventArgs args)
{
//if (viewModel != null)
//{
//when ParentItem is null, you need to set args.ChildList to be the root items...
if (args.ParentItem == null)
{
//get the root list - get all employees who have no boss
args.ChildList = (this.AssociatedObject.DataContext as ViewModel).GetReportees(-1); //get all employees whose boss's id is -1 (no boss)
}
else //if ParentItem not null, then set args.ChildList to the child items for the given ParentItem.
{ //get the children of the parent object
EmployeeInfo emp = args.ParentItem as EmployeeInfo;
if (emp != null)
{
//get all employees that report to the parent employee
args.ChildList = (this.AssociatedObject.DataContext as ViewModel).GetReportees(emp.ID);
}
}
//}
}
