为什么datatable上的ajax.reload禁用按钮？

Question

当我在数据表上使用ajax.reload时，它将禁用数据表中的按钮。

为什么？我正在使用它来将新数据重新加载到数据表中。但是它禁用了按钮。为什么会这样呢？如何解决？

create function dbo.CalculateClosestDayOfWeekDate
(
    @fromDate DATETIME,
    @targetDayOfWeek int -- 1: Monday ... 7: Sunday
)
returns DATETIME
as
begin
    -- AdjustedTargetDayOfWeek: ( 7 - @@DATEFIRST + @targetDayOfWeek ) % 7 + 1
    -- FromDateDayOfWeek: DATEPART( dw, @fromDate )
    -- DayOfWeekDiff = AdjustedTargetDayOfWeek - FromDateDayOfWeek

    declare @daysToAdd int
    set @daysToAdd = ( ( 7 - @@DATEFIRST + @targetDayOfWeek ) % 7 + 1 ) - DATEPART( dw, @fromDate )

    -- if the nearest previous day-of-week is all that's wanted,
    --   replace the below block with `if( 0 < @daysToAdd)`
    --   and subtract 7 from @daysToAdd if true
    if( 3 < ABS( @daysToAdd ) ) -- if magnitude greater than 3
    begin
        if( 3 < @daysToAdd ) -- if positive, subtract 7
        begin
            set @daysToAdd = @daysToAdd - 7
        end
        else -- negative, so add 7
        begin
            set @daysToAdd = @daysToAdd + 7
        end
    end

    return DATEADD( day, @daysToAdd, @fromDate )
end
go

declare @testData table
(
    FromDate dateTime,
    TargetDayOfWeek int
)

insert @testData values ( '2018-09-08', 2 ) -- target Tuesday from a Saturday
insert @testData values ( '2018-09-08', 3 ) -- target Wednesday from a Saturday
insert @testData values ( '2018-09-09', 3 ) -- target Wednesday from a Sunday
insert @testData values ( '2018-09-09', 4 ) -- target Thursday from a Sunday
insert @testData values ( '2018-09-10', 4 ) -- target Thursday from a Monday
insert @testData values ( '2018-09-10', 5 ) -- target Friday from a Monday

select
    td.FromDate
    , td.TargetDayOfWeek
    , dbo.CalculateClosestDayOfWeekDate( td.FromDate, td.TargetDayOfWeek ) ResultingDate
from
    @testData td