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Data not populating on expand - several tables at a level

13 Answers 179 Views

Grid

This is a migrated thread and some comments may be shown as answers.

13 Answers, 1 is accepted

answered on 04 Aug 2016, 12:27 PM

Hi,

The following approach works properly for me:

protected void CollapseAllClick(object sender, EventArgs e)

{

RadGrid1.MasterTableView.HierarchyDefaultExpanded = false;

RadGrid1.Rebind();

// If you not used Advance data binding then again Bind // RadGrid1.DataSource = ""; RadGrid1.DataBind();

}

protected void ExpandAllClick(object sender, EventArgs e)

{

RadGrid1.MasterTableView.HierarchyDefaultExpanded = true;

RadGrid1.Rebind();

// If you not used Advance data binding then again Bind // RadGrid1.DataSource = ""; RadGrid1.DataBind();

}

Please check your code and see if any errors appear when this code is executed that might prevent the expand.

Regards,
Maria Ilieva
Telerik by Progress

Do you need help with upgrading your ASP.NET AJAX, WPF or WinForms projects? Check the Telerik API Analyzer and share your thoughts.

answered on 04 Aug 2016, 03:15 PM

Okay, I found where I get hit.

This one is Grid - Hierarchy with tempaltes.

I am using filterCombos in the radgrid. Without filters, eveything works fine. But whenever I filter either the inbuilt filer or the filter combos, radgrid.rebind is called and then the toggle stops working. Any ideas ????

Protected Sub RadGrid1_PreRender(sender As Object, e As EventArgs) Handles RadGrid1.PreRender
Dim filterExp As String = RadGrid1.MasterTableView.FilterExpression.ToString()
If filterExp <> "" Then
filterExp = Replace(filterExp.ToUpper, "[", "")
filterExp = Replace(filterExp, "]", "")
RadGrid1.MasterTableView.DataSource = Nothing
RadGrid1.MasterTableView.Rebind()
End If
End Sub

Protected Sub RadGrid1_ItemCommand(sender As Object, e As GridCommandEventArgs) Handles RadGrid1.ItemCommand
If TypeOf e.Item Is GridCommandItem Then
If e.CommandName = "InitShowAll" Then
RadGrid1.MasterTableView.FilterExpression = String.Empty
For Each column As GridColumn In RadGrid1.MasterTableView.RenderColumns
If TypeOf column Is GridBoundColumn Then
Dim boundColumn As GridBoundColumn = TryCast(column, GridBoundColumn)
boundColumn.CurrentFilterValue = String.Empty
End If
Next
RadGrid1.MasterTableView.Rebind()
End If
End If
If e.CommandName = RadGrid.ExpandCollapseCommandName AndAlso TypeOf e.Item Is GridDataItem Then
DirectCast(e.Item, GridDataItem).ChildItem.FindControl("InnerContainer").Visible = Not e.Item.Expanded
End If
End Sub
Protected Sub RadGrid1_ItemCreated(sender As Object, e As GridItemEventArgs) Handles RadGrid1.ItemCreated
If TypeOf e.Item Is GridNestedViewItem Then
e.Item.FindControl("InnerContainer").Visible = DirectCast(e.Item, GridNestedViewItem).ParentItem.Expanded
End If
End Sub

Thanks

answered on 09 Aug 2016, 02:29 PM

expanded_row.jpg

expanded_row_nodata.jpg

Hi Maria,

I already have RetainExpandStateOnRebind="true" in the parent RadGrid and also in the Radpageview radGrids. But it is not working. I have attached the before and after filtering screen shots. You can see the toggle icon is shown as expanded but there is no grid visible. I even tried closing the row and expanding it again. Still nothing.

In Grid PreRender, I am calling the Rebind().

Thanks.

answered on 09 Aug 2016, 08:54 PM

I have RadGrid1_NeedDataSource() for the main grid, and declarative binding for the nested radgrids. Where should rebind?

Protected Sub RadGrid1_ItemCreated(sender As Object, e As GridItemEventArgs) Handles RadGrid1.ItemCreated

'BELOW LINES: if comment these lines - filter works for outer grid and not for inner grid; if uncommented - filter works for inner and not for outer grid. What piece of code am I missing ?
If TypeOf e.Item Is GridNestedViewItem Then
e.Item.FindControl("InnerContainer").Visible = DirectCast(e.Item, GridNestedViewItem).ParentItem.Expanded
End If
End Sub

Thanks.

answered on 10 Aug 2016, 04:51 PM

Update:

The parent filter works. I removed the Parent RadGrid1_ItemCreated() and I updated the Parent Prerender, but I couldn't perform expand/filter/sort in the inner grid after filtering the Parent grid.

LoopHierarchyRecursive((RadGrid1.MasterTableView))
End If
End Sub

Protected Sub LoopHierarchyRecursive(ByVal gridTableView As GridTableView)
gridTableView.Rebind()

For Each nestedViewItem As GridNestedViewItem In gridTableView.GetItems(GridItemType.NestedView)
nestedViewItem.FindControl("InnerContainer").Visible = DirectCast(nestedViewItem, GridNestedViewItem).ParentItem.Expanded
If nestedViewItem.NestedTableViews.Length > 0 Then
LoopHierarchyRecursive(nestedViewItem.NestedTableViews(0))
End If
Next
End Sub

This is so frustrating.

It would be really helpful if i can get a sample code for Grid - Hierarchy with Templates , with filters in both outer and inner grids.

Accepted