how to generate autonumbers on form

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I need help with generating autonumbers for filling in data on the form.

I have 10 textboxes and one button, when I write in data in each of those textboxes and click button then all those data have been added to binded table. but one excluded textbox is for generating autonumbers or I wanna it to be that way
the form for making these autonumbers should be like this

current year_number

example
2011_13
2011_14
.......

Posted 16-May-11 0:03am

shonezi

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Sergey Alexandrovich Kryukov · Answer 1 · 2011-05-16T00:07:00

Solution 1

How come it can be a problem? You know the year, month, etc. from System.DateTime.Now.

See http://msdn.microsoft.com/en-us/library/system.datetime.aspx[^].

—SA

Posted 16-May-11 0:07am

Sergey Alexandrovich Kryukov

Comments

Programm3r 16-May-11 9:09am

I agree, you can make use of System.DateTime....

Sergey Alexandrovich Kryukov 16-May-11 12:28pm

I would say, OP just have to...
--SA

yesotaso 16-May-11 15:38pm

...write a COM+ application to hold global auto-incremented value?
...create an SQL table which holds counter value and a SP which auto increments table value and return current counter?
...create an application that holds a static variable and publishes that one via HLA-RTI?

fjdiewornncalwe 16-May-11 18:29pm

I think the OP expects some sort of magic control to do this for him/her. They need to understand that the "form" does not make these numbers, something in the code behind does the work and the form just displays the results. I don't even want to mention that these numbers should come from an object that knows about the current data store and the values in it.

fcronin · Answer 2 · 2011-05-16T09:28:00

Solution 2

when handling the click event...

int newVal = 0;

if (textbox.text != string.empty)
{
   string lastValStr = textbox.text.substring(5);
   if (Int.TryParse(lastValStr, out newVal))
      newVal++;
}

textbox.text = String.Format("{0}_{1}", DateTime.Now.Year, newVal);

Posted 16-May-11 9:28am

fcronin

Comments

shonezi 19-May-11 5:11am

this is ok but I always get zero at the end because newVal = 0, it doesnt change to to next number upon adding data

fcronin 19-May-11 13:17pm

If your textbox contains "2011_0" after the first run, it should contain "2011_1" after running through this code again. Step through it and see what the values are as it progresses to try and find the issue.