Comments by Jafarinejadvazifehkhorani (Top 28 by date)

answer is updated

please provide the code in the case that you want us to help you.and there is a good example here
http://www.asp.net/web-forms/tutorials/data-access/accessing-the-database-directly-from-an-aspnet-page/inserting-updating-and-deleting-data-with-the-sqldatasource-cs

I tested your code, it seems everything is fine, please provide more information if you have the problem. every thing is controlled in your code but this part
string strpassword = Encryptdata(txtpassword.Text);
if it throws any exception, you might not be able to catch it. so to resolve that you need to move this line into try,catch block :)

could you provide the code of your login page and also web.config

Yes, that's right you need to kick it off from WF then while you are working on that you will need to study it anyways :). Please make it as answer if it helped

answer is updated :)

if my solution helped you , please vote or make it as an answer please.

if it helped please make it as an answer

it's not clear, please add more info

please provide the code in order to make it clearer.

please provide your 'drawVisualization' method implementation to make it clearer.

it's not very clear, can you provide more info?

if you provide the code, it is gonna be very helpful

then mark it as an answer

what do you mean by ' i dont understand how it make in image file'? you mean you can't save the image? please explain it a little bit more

as I mentioned in the solution you should change "_" to '_'

Thanks Agent-Spock for adding brackets :)

but I have the same code here , and it's working. anyways good to know that problem is resolved.

provide Form2.conecxionsyscon.Close(); and Form2.conecxionsyscon.CreateCommand(); code as well in order to be able to help you .

it seems that GUID is generating two times, one before saving the file and the other one just before inserting into the table. if you want us to help more, please add more details about the code

the answer is updated

string date = "01/08/2008";
DateTime dt = Convert.ToDateTime(date);

it's very simple

you can find some examples in the following link, I will publish a article with samples very soon

http://msdn.microsoft.com/en-us/library/hh545413(v=vs.110).aspx