How to disabled button for "next record" in C#

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Dear All,

I have a list of candidates and i'm using "Previous" and "Next" button to view candidates.

But for last page, i want to disable "Next" button.

And i dont want to use/create new variable/member as "Total No. of Records".

What I have tried:

private void ValidatePagination()
        {
            if (grdCandidate.Items.Count < ResultsPerPage || grdCandidate.Items.Count == 0)
                btnNext.Enabled = false;
            else
                btnNext.Enabled = true;

            if (_pageNumber == 1)
                btnPrevious.Enabled = false;
            else
                btnPrevious.Enabled = true;
        }

this code works fine, if grid count is lessthen max count or eqal to zero.

but for the last page, as its shows zero records.. its working fine.. but i dont want to allow user to get empty grid on last page.

for eg:
there are 10 records..

for page1 its shows 5 records
for page2 it will show next 5 records
for page3 it is showing 0 records...

i dont want to show zero rocords/empty gird to the user at the last page. How to disable the "Next" button here(on page2 but not on page3).

Can any one please help me...

Thanks

Posted 26-Feb-17 22:11pm

abdul subhan mohammed

Updated 27-Feb-17 1:17am

v2

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madhav_jain · Answer 1 · 2017-02-26T22:54:00

you will get the pageIndex when user click on page no

if (_pageNumber*5== 5) // if _pageNumber=1
{
btnNext.Enabled = false;
btnPrevious.Enabled = false;
}

 if (_pageNumber* 5 >= 21)//Total Record 21
            {
                btnNext.Enabled = false;
                btnPrevious.Enabled = true;
            }
            else
            {
                btnNext.Enabled = true;
            }

Try this hope it will help you.

Graeme_Grant · Answer 2 · 2017-02-26T22:55:00

Solution 2

If you check the "count" that you refer to, then you can set the button state.

Posted 26-Feb-17 22:55pm

Graeme_Grant

abdul subhan mohammed · Answer 3 · 2017-02-27T01:17:00

C#

private void ValidatePagination()
       {
           if (grdCandidate.Items.Count < ResultsPerPage || grdCandidate.Items.Count == 0)
               btnNext.Enabled = false;
           else
               btnNext.Enabled = true;

           if (_pageNumber == 1)
               btnPrevious.Enabled = false;
           else
               btnPrevious.Enabled = true;

           if (SearchCandidates(_pageNumber + 1).Count() == 0)
               btnNext.Enabled = false;//works great
       }

How to disabled button for "next record" in C#

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