Re: Session State - ASP.NET Discussion Boards

i want to check or select only one checkbox in the checkboxlist

pavankumarchakilam16-Nov-07 2:20

16-Nov-07 2:20

i have one checkboxlist control and it display two checkbox on pageload but i want to select only one checkbox at a time. that is if i select the first checkbox the second checkbox should be unchecked and vice versa.

plz help me

thanks in advance

Re: i want to check or select only one checkbox in the checkboxlist

N a v a n e e t h16-Nov-07 2:34

N a v a n e e t h

16-Nov-07 2:34

Then better use a radio button. Or assign a JS function to the onclick event of checkbox and loop through all checkboxes to find any other is checked

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Generating Dynamic Controls

www.Developerof.NET16-Nov-07 1:57

www.Developerof.NET

16-Nov-07 1:57

Hi all,

I have been assigned a weird project of all times.Its basically a form thats used for creating tables in the database. This is scenario...

There are three panels viz left ,right,bottom. The left panel contains a listbox containing the name of the controls(HTML/Server). Once he selects a control the right panel displays what properties that can be set for the controls and the constraints on that field(Primary key,Identity..).Once properties are set and the user hits add button, the selected control with selected properties is added to the bottom panel.

Once all contols are added,the user fills in the fields generated (textbox,dropdown.datepicker..) and on submit a database table should be created on the server with column names as the entered values and with constraints provided by the user.

Problems ..
>How to go about this stuff(.. only hint will do)
>retaining entered values during postback
>Setting database constraints

any help will be highly appreciated....

When you fail to plan, you are planning to fail.

Re: Generating Dynamic Controls

N a v a n e e t h16-Nov-07 2:52

N a v a n e e t h

16-Nov-07 2:52

www.Developerof.NET wrote:
The left panel contains a listbox containing the name of the controls(HTML/Server)

For creating a database table and setting the attributes, why user has to select ASP.NET controls and add it dynamically ?

www.Developerof.NET wrote:
Once all contols are added,the user fills in the fields generated (textbox,dropdown.datepicker..) and on submit a database table should be created on the server with column names as the entered values and with constraints provided by the user.

How about putting the required controls in a DataGrid/GridView ? Then you don't need to bother about managing the state on postbacks. I guess this will be enough.

In first columns put a textbox where user can enter field name, next column could be a dropdown where he can select the attributes like primary key. When add button is pressed, iterate through all the rows, find the controls and create a table creation statement and pass it to ExecuteNonQuery() method.

www.Developerof.NET wrote:
retaining entered values during postback

Applicable when you are not using the DataGrid/Gridview method : You can create dynamic controls in any event before viewstate is loaded. Init() would be an ideal place for dynamic controls, and ASP.NET will maintain state for that.

www.Developerof.NET wrote:
Setting database constraints

Create a table through design view (Enterprise manager). Right click on the table and choose copy which copies table creation statements to the clip board. Paste it somewhere and learn how constraints are applied through a query. Formulate your query in a similar way.

Hope it helps

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Re: Generating Dynamic Controls

Brady Kelly16-Nov-07 4:22

Brady Kelly

16-Nov-07 4:22

N a v a n e e t h wrote:
Applicable when you are not using the DataGrid/Gridview method : You can create dynamic controls in any event before viewstate is loaded. Init() would be an ideal place for dynamic controls, and ASP.NET will maintain state for that.

Sorry, just jumping in on seeing that: will it maintain custom attributes I add to controls if I do there and not in Load?

Cranial Apocalypse

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Re: Generating Dynamic Controls

www.Developerof.NET16-Nov-07 20:17

www.Developerof.NET

16-Nov-07 20:17

Will it be possible to generate dynamic controls on a button click(which causes postback) and add the newly created controls in a panel/div.

Since the init event is called only once i cannot use it on a button click event. Is there any other way round to manage the viewstate

When you fail to plan, you are planning to fail.

Session State

scorpion_man198216-Nov-07 1:46

scorpion_man1982

16-Nov-07 1:46

hi
i want know how i can save user Session For part of time that in this time
data that store in session for user not remove if close or leave the web site
but if the same user again open and browse same address can retrive data and information for user

i think and know that i can save sessionID in cookie for client and Session data in database for same ID and can retrive info but firs i know asp.net 2 have any default way for this and second my way is true or false

for example:
i want save user basket for almost 20 min that if user leave or close can retrive data if user come back in this min

Please Help Me
thaks

Re: Session State

N a v a n e e t h16-Nov-07 3:00

N a v a n e e t h

16-Nov-07 3:00

scorpion_man1982 wrote:
i want save user basket for almost 20 min that if user leave or close can retrive data if user come back in this min

Which is your session mode. inproc ? When will you restore the data ? Immediately after user opens your site, or he/she has to login ? If you are restoring the data immediately after he/she took your site, another user can see the shopping cart of this user if he is using the system within the specified 20 minutes.

Alternatively, you can store the cart details in a table, and access it with user id. Make sure user has logged in and take the records from this table depending on the user id. Put a scheduled job in SQL server which checks this shopping table and removes old data (over than 20mins). This will be ideal and secure.

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Re: Session State

scorpion_man198216-Nov-07 8:44

scorpion_man1982

16-Nov-07 8:44

thanks N a v a n e e t h
i can use all session mode that help me
but i want other shop and site can get shop & accounting service from my site
and all of user when come my site is GUEST and no id

only way to khnow and save data for user use sessionID but i want use way that can retrive shopping data for user if user close your browser window and come back in 20 min

can you help me or any guide for solve this problem?

Image in Datalist

Ravi_2116-Nov-07 1:45

Ravi_21

16-Nov-07 1:45

can any one help me to display images in datalist

Re: Image in Datalist

Abhijit Jana16-Nov-07 2:30

Abhijit Jana

16-Nov-07 2:30

Check this one
How to Display Images in DataList Control using ASP.Net 2.0[^]

Best Regards
-----------------
Abhijit Jana
View My CodeProject Articles

"Success is Journey it's not a destination"

enable or disable form elements not working in firefox

sivarajanb16-Nov-07 1:43

sivarajanb

16-Nov-07 1:43

hi,
i want to enable a html element while the checkbox is in checked state.The following code works fine in IE but not in Firefox.

...

and my script is.......

function findselective()
{ if(document.getElementById("findOption").checked==true)
{document.getElementById("findBy").disabled=false;
}
else{
document.getElementById("findBy").disabled=true;
}
}

Pls help me to solve this problem.

by
siva

Re: enable or disable form elements not working in firefox

Michael Sync16-Nov-07 6:08

Michael Sync

16-Nov-07 6:08

sivarajanb wrote:
document.getElementById("findBy").disabled=false;

Can you change the "findBy" to "findby" ( small letter "B") and try again??

I have tested with the code below. I works well.

function findselective()<br />
{ <br />
  document.getElementById("findBy").disabled = !document.getElementById("findOption").checked;<br />
}

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

"Please vote to let me (and others) know if this answer helped you or not. A 5 vote tells people that your question has been answered successfully and that I've pitched it at just the right level. Thanks."

Re: enable or disable form elements not working in firefox

sivarajanb16-Nov-07 17:18

sivarajanb

16-Nov-07 17:18

thanks Michael its working...

regards
siva

i want to create a pdf file using asp.net using C#.

Khawar Abbas116-Nov-07 1:26

Khawar Abbas1

16-Nov-07 1:26

I want to create a pdf file using asp.net using C#. I also want to create some link in the pdf file e.g Table of contents.
Any suggestion....

Thanks in advance.

Do good and have good.

Re: i want to create a pdf file using asp.net using C#.

N a v a n e e t h16-Nov-07 3:01

N a v a n e e t h

16-Nov-07 3:01

Silent Eagle wrote:
I want to create a pdf file using asp.net using C#

1 - Use any third party libraries offering PDF creation.
2 - Use crystal reports and export options (recommended)

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how i can stop the zero bytes file uploading

jagan12316-Nov-07 1:12

jagan123

16-Nov-07 1:12

iam using file upload control to upload the file but when iam selecting the zero bites size file then i want to get the message that u have selected zero bytes file how can it be possible.

Re: how i can stop the zero bytes file uploading

N a v a n e e t h16-Nov-07 1:16

N a v a n e e t h

16-Nov-07 1:16

if (FileUpload1.PostedFile.ContentLength == 0)
{
//Your messagae goes here
}

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Re: how i can stop the zero bytes file uploading

jagan12316-Nov-07 1:22

jagan123

16-Nov-07 1:22

sir this can i write in button click event or where i can write sir

Re: how i can stop the zero bytes file uploading

aswini16-Nov-07 1:25

aswini

16-Nov-07 1:25

Hi,,,

U write the code in button click

Aswini

regular expressions

Sonia Gupta16-Nov-07 1:09

Sonia Gupta

16-Nov-07 1:09

i want to learn the regular expression .i mean the meaning of each character in the regular expression.can somebody please refer me a site that belongs to the detail overview of the same.

Yesterday is a canceled check. Tomorrow is a promissory note. Today is the ready cash. USE IT.

Re: regular expressions

N a v a n e e t h16-Nov-07 1:15

N a v a n e e t h

16-Nov-07 1:15

Is Google broken where you live ? Check http://www.regular-expressions.info/[^]

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Re: regular expressions

Sun Rays16-Nov-07 1:17

Sun Rays

16-Nov-07 1:17

Miss,
open the site.. www.google.com and in search write regular expression C#.

U will be having lots and lots of information..

Thanks,
Sun Rays

Rate this post if you like answer.

Re: regular expressions

Sonia Gupta16-Nov-07 1:27

Sonia Gupta

16-Nov-07 1:27

i have gone through such sites . i want detailed view(meaning of each letter)
u know any site that gives the e-book free fo the same ?

Yesterday is a canceled check. Tomorrow is a promissory note. Today is the ready cash. USE IT.

Re: regular expressions

aswini16-Nov-07 1:24

aswini

16-Nov-07 1:24

Hi...

See basic rules are simple..

for range.. of characters use [ ]
for repeating the characteres use { }...
or undefined times means use *..

eg: [a-z]{5} -- means...

5 characters from a to 5

Aswini

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