Current RadGrid (Q3 2015) does supports model binding of master/detail records.

Request the functionality to set ItemType on the detail gridview and pass the master's datakey as the id for the detail select method.

Or, alternatively, if the model has a virtual IQuerable binding, set the detail view's datasource to the models virtual entity

For example, a model with a one to many relationship to the color options for a car:
Model Cars()
{ string name
int colorRange
virtual colorOptionsModel colorOptions
}
Model colorOptionsModel
{
int colorRange
 string colorName;
} 

In the RadGrid:
<mastertable DataKeyName = "colorRange">
<DetailView datasource="Item.colorOptions">

In radgrid, the excel style filtering shows a checkbox list of values to filter a column.  This has limited use on a date + time column of a grid, because such a list would show basically every grid row value in the list.  I can bind date only to the filter checkboxes to shorten that list, but if I apply a selected checkbox to filter then there will be no records returned.  This checkbox filtering needs to work with the grid column attribute EnableTimeIndependentFiltering (when it is filtering a datetime column) but it does not - that attribute only works with the datepicker calendar and text entry.   

Set up to reproduce:

<telerik:RadGrid ID="RadGrid1" runat="server" ....>
    <MasterTableView EditMode="Batch" ....>
        <BatchEditingSettings HighlightDeletedRows="true" />
        <Columns>
            <telerik:GridBoundColumn DataField="OrderID" Display="false" UniqueName="OrderID">
            </telerik:GridBoundColumn>
            <telerik:GridDateTimeColumn DataField="OrderDate" DataType="System.DateTime"
                FilterControlAltText="Filter OrderDate column" HeaderText="OrderDate"
                SortExpression="OrderDate" UniqueName="OrderDate">
            </telerik:GridDateTimeColumn>
....

Because linq to entities no support DateTime.Parse() , So can you DateTime.Parse() to DateTime method

http://www.telerik.com/forums/how-override-filter-pattern-from-radgrid

When using RadGrid GridDropDownColumn that displays referenced data from a different table allow filter to be replaced with a dropdown of available values. For example if my database has a table called Groups with and Id field and Name field; and it also contains a Members table with a GroupId field which contains the Id from the Groups table when I configure the Members GroupId Field with GridDropDownColumn with ListTextField="Name" ListValueField="Id" DataField="GroupId" as the values for the dropdown I should be able to choose FilterType="DropDownControl" to get the functionality found here http://demos.telerik.com/aspnet-ajax/grid/examples/functionality/filtering/filter-templates/defaultcs.aspx for City and Country columns.

When using keyboard navigation, the ESC key currently does some things properly (like closing out of batch editing forms). However, it does not prevent the firing of certain update events (like BatchEditCellValueChanged). The ESC key should act like a "cancel" key, so no update events should fire when it is pressed.

Hello,
Please add support to bind to System.Dynamic.DynamicObject: 
https://msdn.microsoft.com/en-us/library/system.dynamic.dynamicobject%28v=vs.110%29.aspx?f=255&MSPPError=-2147217396
Regards,
Douw

When in batch edit mode, using standard asp.net validation controls will display the validation error within the cell, and expand the cell contents horizontally and possibly vertically as well.  This is a very ugly (and clunky) way to show validation messages in a batch edit mode.  

It would be nice if instead, we could set an grid attribute that specifies a row backcolor when validation fails for a row.  In addition, show that rows validation messages automatically in a tooltip or radtooltip as the user hovers the mouse over the row when it signifies the exception backcolor.  These messages could be assigned to a columns markup as an attribute.   

Another nice to have is to show a  section on the grid (perhaps under the header) that could display to alert the user when validation had failed.

We recently added row group functionality to our grids and we and our users are very happy with this.

Only thing that bothers us is the drop functionality on the grouppanel. We have a wish to make the drop functionality of the grouppanel much more intuitive. Especially when the RadGrid is already grouped on multiple columns.

The marker to indicate where the user will drop an existing grouping column is shown at the begin and the end of the group column connector between groups:

The drop indicator on the group column connector should not be shown at the side of the connector where the dragged column is at to inform the user nothing will happen/change when you drop it here.

 All of these cases can be reproduced on the RadGrid Grouping demo on your site:
 http://demos.telerik.com/aspnet-ajax/grid/examples/functionality/grouping/grouping/defaultcs.aspx

Forum reference:
http://www.telerik.com/forums/grouppanel-column-drop-and-reorder?actionMode=replyPost&postId=d7274118-f8a1-48e1-9ae3-f537fe8d78de

Please could you add an option to the NextPrevNumericAndAdvanced pager mode to allow the Page Size RadTextBox to be displayed as a RadComboBox like the NextPrevAndNumeric pager.
This would help us to have a more consistant look and feel between the 2 pager modes.

I would like to suggest that the Buttons in the RadGrid allow databinding to the CommandName and CommandArgument fields.  And pretty much all the buttons or anything that triggers an ItemCommand event that allow a CommandName and CommandArgument have their properties to be databound and accessible in the code behind.

Thanks!!!

Current RadGrid only has headers/header templates for column headers. The only way to have headers for each row would be to manipulate the grid data and adding the header for each row into the grid data itself. And if we wanted to group the row headers is another round of manipulating the grid data and also manually merging the cells. Is it possible to have to have it as a feature of the RadGrid just like column groups and column headers to simplify the task? example of the final output ->

Currently, the Headers are cycled by pressing the Tab key and this FeatureRequest is to improve the behavior and allow arrow navigation between headers, similar to the Kendo UI Grid:

• https://demos.telerik.com/kendo-ui/grid/keyboard-navigation 

Also, pressing Home/End should navigate to the first/last focusable cell in the row, while Ctrl+Home/Ctrl+End should navigate to the first/last focusable element in the Grid.

I think it would be a great addition to the grid control if there was an attribute that you could apply to the columns called "SortNullsLast" or something along those lines. This attribute would modify the grid's sorting functionality and only apply the ascending or descending sort to non-null values.

Currently when you sort ascending, null values are sorted to the top of the grid. This new attribute would allow the non-null values to show up at the top in ascending order.

An example of why this would be useful is having a grid that tracks an optional requested completion date of a task. You would want to be able to sort the grid so that the earliest date shows first in the grid. Right now, any records that don't have this optional date would show first, which doesn't make sense.

Would be nice to have RadGrid offer the feature to have options to Merge Cells with same contents so the report/grid won't be so busy. Users typically expect this kind of look and feel. 

Example & code included:
    http://www.marss.co.ua/2010/01/how-to-merge-cells-with-equal-values-in.html

This ticket discussed it also: 1091013

Others in forums asked about this also in the past since about 2009, if we google on: telerik grid asp.net merge cell. .
http://www.telerik.com/forums/problems-with-merge-row-in-radgrid

http://www.telerik.com/forums/merge-cells-by-column

http://www.telerik.com/forums/merge-rows

Then I found this link among the results from google. Though, I wish there are RowMerge and ColumnMerge properties in RadGrid for us to turn it on/off. That will be wonderful.

http://www.telerik.com/support/kb/winforms/details/radgridview-merge-celss

This example is also from the following link from the same google search result, the first link.

http://www.telerik.com/forums/merge-cell-in-radgrid

Thanks.

By changing the application's thread Culture to Persian (fa-IR) and the Grid's RenderMode to Lightweight, the application fails with "System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values."

To replicate the error

1. Change the application culture to Persian

protected void Page_Init(object sender, System.EventArgs e)
{
    var culture = new System.Globalization.CultureInfo("fa-IR");

    System.Threading.Thread.CurrentThread.CurrentCulture = culture;
    System.Threading.Thread.CurrentThread.CurrentUICulture = culture;
}

2. Change the RenderMode of the Grid to Lightweight

<telerik:RadGrid ID="RadGrid1" runat="server" RenderMode="Lightweight">
</telerik:RadGrid>