I have a telerik radgrid where columns and detail tables are declared like:
<telerik:RadGrid>
<Columns>
<telerik:GridBoundColumn/>
<telerik:GridBoundColumn/>
</Columns>
<DetailTables>
<telerik:GridTableView
<Columns>
<telerik:GridBoundColumn/>
<telerik:GridBoundColumn/>
</Columns>
</telerik:GridTableView
</DetailTables>
</telerik:RadGrid>
Which gives a nested grid like this:
Now, what I want is to be able to specify a detail table (those sub tables) per row, programmatically.
(I cannot be sure that the columns for the nested table that comes up when I expand the line fgvbvb will be the same as the columns when expanding the line xcxcv).
I have tried, without luck in the OnDataBound handler of the radgrid (in which I omitted <DetailTables>
) to access the data structure for nested tables like this:
protected void OnRadGridDataBound(object sender, EventArgs e)
{
foreach (GridDataItem item in grdActivitiesToCopy.MasterTableView.Items)
{
var dg = item.ChildItem.NestedTableViews[0];
}
}
This will overindex the array NestedTableViews because it is empty. Also, item.ChildItem.NestedTableViews has no setter.
How do I populate each row with a detail table one by one manually?
According to Telerik:
Creating a Hierarchical Grid Programmatically:
Code Sample:
Please refer to this help article for more details: http://docs.telerik.com/devtools/aspnet-ajax/controls/grid/defining-structure/creating-a-radgrid-programmatically#creating-a-hierarchical-grid-programmatically
First of all , because of the life cicle of a asp page. You can't access to a event on a detail table.
If you need to access detail tables , items etc ..
You need to add an method to the PreRender in the MasterTableView like this:
The method will recursively iterate through the grid.
The way you do it can change depending on your HieararchyLoadMode.
So this is my way to do it, easiest way exist if you are on Client or Serverbind mode.
Traversing and load mode by the telerik doc .
I'm pretty sure you don't want to :
You want to have Multiple table at a Sub Level in your grid and display the rigth one programmatically.
And this is can be done in two easy step:
1/. Create every Detail table in your apsx page.
Please refer to this documentation for more information : Several tables at a level
2/. Handle the display:
You can hide a detail table using :
Or you can hide the parent of the detail table you tested using the detail table that is in param of the controler :
HideExpandColumn will hide the expand control that stay sometimes even if you hide th detail table.
Bonus: If you need to access to a control in a detail table. You can use this:
Calling it in your controler like this :