Thank you for your time in reporting this problem. The Input controls in the filtering are indeed not affected by the EnableEmbeddedBaseStylesheet settings from the Grid.
Controls related to this issue are RadTextBox, RadNumericTextBox, RadTimePicker, RadDatePicker and RadDateTimePicker.
A possible workaround would be to access the controls following the Accessing Values and Controls article and disable their stylesheet explicitly.
protected void RadGrid1_ItemCreated(object sender, Telerik.Web.UI.GridItemEventArgs e)
{
if ((sender as RadGrid).AllowFilteringByColumn && e.Item is GridFilteringItem)
{
var grid = (sender as RadGrid);
var filterItem = (e.Item as GridFilteringItem);
foreach (var column in grid.MasterTableView.RenderColumns.Where(x => x.SupportsFiltering() & x.Visible))
{
var filterControl = filterItem[column.UniqueName].Controls[0];
if (filterControl is RadTextBox)
{
((RadTextBox)filterControl).EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
}
else if (filterControl is RadNumericTextBox)
{
((RadNumericTextBox)filterControl).EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
}
else if (filterControl is RadTimePicker)
{
var timePicker = (RadTimePicker)filterControl;
timePicker.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
timePicker.TimeView.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
timePicker.SharedTimeView.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
}
else if (filterControl is RadDatePicker)
{
var datePicker = (RadDatePicker)filterControl;
datePicker.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
datePicker.Calendar.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
datePicker.SharedCalendar.EnableEmbeddedBaseStylesheet = false;
}
else if (filterControl is RadDateTimePicker)
{
var dateTimePicker = (RadDateTimePicker)filterControl;
dateTimePicker.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
dateTimePicker.TimeView.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
dateTimePicker.SharedTimeView.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
dateTimePicker.Calendar.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
dateTimePicker.SharedCalendar.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet;
}
}
}
}
Protected Sub RadGrid1_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs)
If (TryCast(sender, RadGrid)).AllowFilteringByColumn AndAlso TypeOf e.Item Is GridFilteringItem Then
Dim grid = (TryCast(sender, RadGrid))
Dim filterItem = (TryCast(e.Item, GridFilteringItem))
For Each column In grid.MasterTableView.RenderColumns.Where(Function(x) x.SupportsFiltering() And x.Visible)
Dim filterControl = filterItem(column.UniqueName).Controls(0)
If TypeOf filterControl Is RadTextBox Then
CType(filterControl, RadTextBox).EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
ElseIf TypeOf filterControl Is RadNumericTextBox Then
CType(filterControl, RadNumericTextBox).EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
ElseIf TypeOf filterControl Is RadTimePicker Then
Dim timePicker = CType(filterControl, RadTimePicker)
timePicker.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
timePicker.TimeView.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
timePicker.SharedTimeView.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
ElseIf TypeOf filterControl Is RadDatePicker Then
Dim datePicker = CType(filterControl, RadDatePicker)
datePicker.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
datePicker.Calendar.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
datePicker.SharedCalendar.EnableEmbeddedBaseStylesheet = False
ElseIf TypeOf filterControl Is RadDateTimePicker Then
Dim dateTimePicker = CType(filterControl, RadDateTimePicker)
dateTimePicker.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
dateTimePicker.TimeView.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
dateTimePicker.SharedTimeView.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
dateTimePicker.Calendar.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
dateTimePicker.SharedCalendar.EnableEmbeddedBaseStylesheet = grid.EnableEmbeddedBaseStylesheet
End If
Next
End If
End Sub