I used a css hack to achieve a workaround

in the main TelerikGrid node, add event hook OnRowRender="@OnRowRenderHandler"

that handler is something like:

    void OnRowRenderHandler(GridRowRenderEventArgs args)
    {
        OrgUnit item = args.Item as OrgUnit;

        args.Class = item.Children.length ? "has-children" : "no-children";
    }

Then in the site.css I override display of the hierarchy sign

tr.no-children .k-hierarchy-cell *{
    display:none !important;
}

it's not perfect, but acceptable until Telerik implement an official feature

 

we would also need this feature in our hierarchy grid, thanks

wei

 

I would also like the option for a conditional detail template added to the grid. We are using it to show a hierarchical set of data with uneven paths in a set of generic grid components and would like the expand to only be visible when it has further data to expand. 

Hi Martin, I understand, but I've built a system that generates and configures a grid for a generic EF Entity, so in my mind the detailstemplate is always configured with my version of generic grid that is the same for every entity, but I need to activate it only if the entity has a particular collection of items...

Would be great a bool flag to disable the details view at grid level, the detailstemplate and virtual scrolling are incompatible

I would also really appreciate this option.  I have a list of 50-100 items, but only ~10 have sub-data.  I have added an additional field to show there is data and allow sort by that field to help my users see if there is data, but it's a little clunky.   The visual of the +/- is a little confusing for them.

It would be great if we could have some optional parameter to remove the +/- option for the items with no sub-data, related to a field from the context data.  I would have no problem adding an extra member function to my data class that could return true/false if the sub-data was valid.  

class GridItem {

    public Product p;

    public List<obj> details;

    public boolean hasData { get { return this.details.Count() > 0; } }

 

<TelerikGrid  >…. 

     <DetailTemplate ShowDetail="hasData"> 

     …

 

Thanks!  I can't wait to see what you come up with!  :) 

One approach would be to add an event that allows us to hook into the creation of the row.  Here's an example:

 

<TelerikGrid Data="salesTeamMembers">
    <DetailTemplate>
        @{
            var employee = context as MainModel;
            <TelerikGrid Data="employee.Orders" Pageable="true" PageSize="5" OnRowRender="@RowRenderHandler">
                <GridColumns>
                    <GridColumn Field="OrderId"></GridColumn>
                    <GridColumn Field="DealSize"></GridColumn>
                </GridColumns>
            </TelerikGrid>
        }
    </DetailTemplate>
    <GridColumns>
        <GridColumn Field="Id"></GridColumn>
        <GridColumn Field="Name"></GridColumn>
    </GridColumns>
</TelerikGrid>

@code {
public async Task RowRenderHandler(GridRowRenderEventArgs args)
    {
var row = args.Row;
var data = (MainModel) args.Item;
if (data.HasSomeProperty)
{
row.DetailEnabled = false;
}
}
}