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try to put the showdata() inside the post back. that is the error...
code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Page.IsPostBack = False Then
Session("r") = 0
'dv.Table.Rows(1)(1) = "xx"
showdata()
End If
End Sub
Padmanabhan
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Thanks a lot padmanabhan N. It is working fine; but it is really new to me how it is working now; when page's postback event has been fired and i have following in showdata:
Public Sub showdata()
dv = CType(SqlDataSource1.Select(DataSourceSelectArguments.Empty), System.Data.DataView)
TextBox1.Text = dv.Table.Rows(Session("r"))(1).ToString()
End Sub
what is the relation with the postback's true/false?
I wish to thanks for providing the the answer and shall be more informative for the question i asked above please.
Best Regards
Girish Sharma
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with pleasure,
The postback is doing all the things. The loop your write inside the postback will fire only when the page is loaded and the value will be maintained and the loop wont be executed after that. So, if we write the code after the loop will be fired in even and every postback. just keep the breakpoint in the page load and check. You can see for each and every postback the pageload event is fired.
So each and every time the button click it fires the page load first and then the button event. So, the showdata() will clears your modification and the original data will be set. For this only you got the old values.
I hope you understand now.
Padmanabhan
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padmanabhan N
Thank you so much for clearing doubts and nice explanation.
Best Regards
Girish Sharma
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its ok, Happy coding..
Padmanabhan
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i am unable to connect database to my web page in visual studio. i have created a separate web form in my project. i add an sqlDataSource from the tool box . i just entered into configure data source option and created a new connection. i got an add connection pop up window in which i have selected sqlexpress as my server. i have selected my database name and when i click ok i am getting an error as follows
object reference not set to an instance of an object
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where is the code you have used.... please make your question clear...
Padmanabhan
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Sundar 2009 wrote: i am unable to connect database to my web page in visual studio
How did you tried to connect with DB? What problem are you getting ? You have to more clear and specific while asking question in the forum. Please read forum guidelines before post.
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Hi...
Im given an assignment i wil b thankful if any1 helps me out...
I hav to create a login form in C#.net and the username and passwords r verified from the login table present in sql database... now as per the user logged in the edit,delete and insert option should be enabled or disabled in the grid view present in the form after successful login in....
for eg: if i log in as admin im given permission 2 edit,delete and insert. if i log in as a student im allowed 2 just view the records.. i must create the table in the sql database accordingly 2 satisfy these conditns...
Do any1 plzz help me 4 god sake..
Thanx in advance...
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Is this[^] what you need? There is an article[^] in CP as well.
जय हिंद
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nofear5535 wrote: Im given an assignment i wil b thankful if any1 helps me out...
Is this a school assignment???
nofear5535 wrote: Do any1 plzz help me 4 god sake..
Please don't involve god for all these pity matters. You are capable enough to handle this all by your own.
nofear5535 wrote: i must create the table in the sql database accordingly 2 satisfy these conditns...
There can be many options. I would create tables like : UserDetails, UserRoles, RolePermissions
UserRole
UserID
UserName
FirstName
LastName
...
UserRoles
UserID
RoleID
RolePermissions
RoleID
PermissionType
This is just an example, but you may come up with your design too. ![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.
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gud day...
actually i must create a table dat has username & password.. If i login as admin i must be able 2 alter de gridveiw, for dis should i add any other additional column in database table hw do i make the username and password match and enable the alter option according 2 the user logged... Im using sql2005 and coding used is C#.net...
Do plzz help me...
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nofear5535 wrote: hw do i make the username and password match
Use ASP.Net's login control (or have your own textboxes and labels) and ADO.Net to validate the UserID and password.
nofear5535 wrote: enable the alter option according 2 the user logged
Your database must have a table that relates each user to a role. Now each role will have certain rights (updating data in your case) in the application. When the user logs in, check the role and grant the rights that the role has.(Enabling disabling the update link or whatever you use).
There are plenty of articles on net that implement this kind of thing.
जय हिंद
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Ok, let me make it more simple for you.
1.) Create a table(UserDetails) something like this
UserID
UserName
Password
IsAdmin
2.) Create a Stored Procedure with parameters username, password
Select * from UserDetails Where UserName = @UserName and Password = @Password
3.) Call this stored procedure from your C# code.
4.) Check if the result contains any row. If it does than the user has been authenticated[^].
5.) If the user has been authenticated, check if he is authorised for Administrator persmission. You will do this by checking the value of IsAdmin.
Well, this is the maxmimum I can do.
And I again suggest you to buy a book on C# and start reading. You may also look at some of the starter article at CP.
Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.
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nofear5535 wrote: wil b thankful if any1
nofear5535 wrote: hav
nofear5535 wrote: r verified
nofear5535 wrote: Do any1 plzz help me 4 god sake..
Don't talk like a retard, please. You're not on a phone, you have a full keyboard in front of you.
nofear5535 wrote: Im given an assignment
Is this homework ? Talk to your teacher, they should know you are this lost. Is it paid work ? What a disgrace, if permissions are in the hands of someone who has not the first clue how to impliment them.
Christian Graus
Driven to the arms of OSX by Vista.
"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.
I can do things with my brain that I can't even google. I can flex the front part of my brain instantly anytime I want. It can be exhausting and it even causes me vision problems for some reason. - CaptainSeeSharp
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Hello.
I have an aspx page with a literal thet I'm building a table inside it.
the table rows come from db with an id num in each row.
Now, I want to add a button to each row that in his click will run a function with the id.
How can I add a button that on his click will run a server side function with the id?
Thanks.
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Create the object of button class and set the relevant properties as you do in the markup. Also handle the click event for it. Then you can place it in the page(or any other container) using Controls.Add method.
जय हिंद
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So, what you have tried for this? Create object of the button , assign unique ID , add event handler with the button and add them inside the table row.
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Hi,
Sorry for the poor question before. My mistake.
The problem is that I'm programing for the web (asp.net) and I more easy with the winForm version of this.
I want each button the appear inside a row in the table with a unique id.
I am not sure how to create the unique button at run time.
For example:
I have the code (i replace the < with | since it look bad even in a code scope):
<br />
literal.Text = "|table|[LOOP START]|tr||td|I want to add button here |td||tr|[LOOP END]|table|<br />
as you can see, I'm creating the html tags of the rows in a loop. not the best way, I know, but thats what I have.
So how can I create all the buttons there?
Thanks.
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polycom123 wrote: I want each button the appear inside a row in the table with a unique id.
Easy way is to use a grid view rather building the table yourself. Put the button in a template column and when grid view is generated, button will appear in each row.
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N a v a n e e t h wrote: Easy way is to use a grid view rather building the table yourself. Put the button in a template column and when grid view is generated, button will appear in each row.
make perfect sense. 
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Happy Birthday friend
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But I'm not sure I'm looking for the easy way,
I'm looking for the best way for me so it will look like I want it to look.
When I'm building my own table I have complete control over every thing and that's the easy way to build the table exactly like I want it to be (all the rows and columns with divs inside them and pictures and so on).
It worked pretty good until now when I need to add an action button for each row that will get the row information and send it to a server side function.
Thanks.
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polycom123 wrote: I'm looking for the best way for me so it will look like I want it to look.
Whatever I said would be the best and easy way.
polycom123 wrote: When I'm building my own table I have complete control over every thing and that's the easy way to build the table exactly like I want it to be (all the rows and columns with divs inside them and pictures and so on).
Well, if you need more control over the HTML generation, use repeater. You can use a template column here and put the required controls and design.
As CG mentioned, problem with manually created tables are ASP.NET won't maintain viewstate for it. So either you have to create your table before page_load or stay with the controls what I suggested. When you use controls like repeater or gridview, viewstate will be managed by ASP.NET and you don't have to add extra coding for that.
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