how to change picturebox image to another image?

thank you,
now the random number is work. and
yes, i was used textbox for no.of ticket and Button for proceed the calculating total ticket and payment.this is done by me.
but, the problem is that when user put value on textbox and click on proceed button the seats panel is visible and user select the no.of seat which values are put in textbox.
so, how to write function of this application?

when number of ticket i put 3 so select only 3 seat randomly in one selected class(exclusive, special,normal).
but it select in serial way.
 give me other solution if u have and
plz,give me another idea for the selection of seats

The code to produce random numbers is pretty standard in .NET and is working fine for me.

So what's not working?

If it's producing a seat that's already been taken, then you need to keep calling Next() until you get an unoccupied seat.

can u give me another solution.this is not work and plz,tell me when user select exclusive class and no.of ticket 2(or any number(1 to 10)) then seat panel visible and only selected in exclusive seat which seat picturebox become green seat picturebox and other class(special,normal) seat picturebox change gray color seat(mean u can not choose it.) same way special and normal.

If the seats are numbered from 1 to 150, you can get a random number between those two limits as follows:

// put this at form level

static Random rand = new Random();

// within some method

int seatNumber = rand.Next(1, 151); // note needs to be one more than upper limit


EDIT: Sorry GetNext should be just Next

plz,tell me how to select random seat give me function...i have total 150 seat..
ans me quickly...

hello,
i confirm that now i explain u briefly,
i use combobox control for the class(exclusive,special,normal) and use one textbox for no.of ticket. the value of ticket given by user.
when user select exclusive class and no.of ticket 2(or any number(1 to 10)) then seat panel visible and only selected in exclusive seat which seat picturebox become green seat picturebox and other class(special,normal) seat picturebox change gray color seat(mean u can not choose it.) same way special and normal.

I thought from the way you'd posed the question that you'd already figured out the logic for that and put it in the picturebox_Click handler. What you couldn't figure out was how to call the handler programatically.

However, if that's not the case, you'll need to tell me a lot more about the code you already have.

I'd imagine that you'll have:

1. An array of 150 pictureboxes to represent the seats.

2. A corresponding array recording the current class of seat (exclusive, special or normal).

3. Three images of the seats in white, green and gray.

4. A single Click handler shared by all the pictureboxes.

However, perhaps you could confirm this and also let me know how you determine which class a particular seat belongs to.

but how to change white color seat picturebox image in green color seat picturebox and grey color picturebox.
i have total 150 seats.
how to make function of this green color and gray color seat.  

I'm assuming you have the code to change the image in the picturebox's Click handler.

If you want to call this programatically, rather than having the user click the picturebox, then you can do so by just providing the appropriate arguments to the handler.

The first argument 'object sender' is easy - just pass the picturebox reference itself.

The second argument 'EventArgs e' is not so obvious but the value EventArgs.Empty is harmless so I'd use that.