Consider my dataTable contains 10,000 rows and i want to know the pitfall of storing datatable in a session variable... I want to use it until a new row has been added...What type of session mode should i use?
View 4 RepliesI am storing Datatable in Session variable in my project. Is it good practise to do so? The datatable has 20 fields and can run into 1000+ records. Will it hamper my application performance?
View 11 Repliesi have a list for my shopping cart which i currently store in my datatable and then store it in a session. to avoid using sessions is it best to create a class where the datatable is stored and can be accessed from anywhere?
View 2 RepliesWhen a use is logged in (Through open-id) we are creating a session variable named "UID" and storing the unique user-id in it. Later we are checking the session to see if the user is logged in. I think this is not the right way, but I could not force the team to change this, as I cannot show how this implementation can be cracked. why (If yes) this implementation is bad?
View 3 RepliesI am creating a website that allows users to login to their gameserver remotely and send / receive commands. The connection happens via an UDP socket and requires simply the IP of the gameserver, and a password.
On my website, users can add servers to their accounts, where the server IP and password are stored in a database. Then they can connect to any of their servers, which creates a new Socket object and connects to it using the IP and password of that server.
This Socket object, embedded in an object that also stores the server IP and password, is stored in a Session variable when the user connects, and is retrieved on every page. For example, there's a page where the user can view a list of the players on the server (and kick/ban them), a page with server settings, a page with messages, etc. All these pages require the Socket connection to get their information (they send a certain command and parse the response). When I need to send a command via the socket, I need to send the password of the server each time (otherwise it does not work). My question now is: how secure is this? The password of a server is sensitive information*, but I am storing it in a session variable and sending it (using the Send command of the Socket object) to the server.
i think the Session variable is stored on memory on the server, so I don't think so, but I'm really unsure about these kind of things and I'd like to be certain that my website is secure. Well, I think it will never be 100% secure but I want it to be at least not worth the effort for someone to hack the password. If it takes a lot of trouble then people wouldn't bother, but I don't want to find out that people's passwords are being thrown out on the street (so to speak) and that my website is completely insecure...
Im storing the user details in a session variable(session["userid"]) while login.
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Im using the session variables in other forms ,there im checking the session variable using the following code.
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In this form im having 'export to excel ' button.When i click this button session variable becomes empty and redirected to the login page.(Im having this problem in IE only but in FF it works fine).
I'm building a web system and various clients will have alternate text for default instances throughout the site. One place is the main nav but there are others. The default may be "project" but they may want to call it "event".I'm heading down the road of calling all the terminology settings (there's a list of about 15) and creating an ArrayList that has the id and either the default or their replacement as the items in the ArrayList.I've also got a enum key list called TermKey that has the defaults and the corresponding ID number.
Throughout the code I'll reference TermKey.Project and then do one of these things that I see as options.
1-pull the text from the session (if the client has set it to "event" then the text "event" will be waiting for the call there)2-pull the text from the database every time I need it.3-pull the client's list each time a page loads.Some thoughts on the impact each way or if there is a best practice for
I have heard alot about sql injection and how it is normally caused. Mostly sql injection in my opinion is caused through search boxes. Now my question is quite simple. Is it advisable to store the search keyword in a session variable to prevent sql injection? I don't want to expose the keyword through the querystring as it is prone to attacks. So in short there is no harm in using session variables to store the keyword right?
View 6 RepliesI have a gridview and a checkbox. I am able to pass the checkbox id to a textbox in the same page. This is then passed as a session variable. However, when I place an option to page and select the checkbox items in the next page, the session variable resets.Please see below code, how do I store "all checkbox" throughout all paging and store it in the session page?
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Behind code VB:
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I've got a DataTable that I'm appling to a session variable on inital page_load.
I need to check whether that Session Variable when the page is returned to - ie Not isPostback.
I can do If Session("var") = Nothing Then, but the problem with that is, if the Session variable already has the DataTable applied to it, it will throw back an error stating that
Operator '=' is not defined for type 'DataTable' and 'Nothing'.
How can I get around this?
I need to save data in a datatable on a web page where the user is adding items to order. I know how to create a datatable and add data to it. And I will be binding it to a gridview control. But I do not want to loose the data when the page does a postback. Do I need to save it to a session variable for this? Or will the data stay in the datatable?
I found this code posted online. Is this how I would save it to a session variable and then load it anytime?
Code:
Dim dt As New DataTable()
Session("MyDataTable") = dt
' To retrieve it from session
Dim dt As DataTable = DirectCast(Session("MyDataTable"), DataTable)
I am working on a web application that is consuming a Dataset returned by a web service. As the application is running I store that Dataset as a session variable to be used over and over again as the user navigates to the different pages that will edit the tables within the dataset. The idea was the user will only have to wait for the data once when the application loads then the application would use the session variable until the user saves the changes they made, when that happens it would pass the edited tables to the service to update the database. Is there problems with this design and the storage of the Dataset and Datatables as a session variable?
View 4 RepliesHow to Fetch Rows based on Values in a Session Variable
View 4 RepliesCurrently in an .aspx file, I am storing a value (filename that was created in that session) in an hidden text box. When the user clicks on the "Print" labeled Hyperlink control, it opens the file that was stored in the hidden text box control. But when the user goes to different screen (in the same session), I loose the filename value that is stored in the hidden text box control. So I would like to store the filename variable in a session variable. So that if the user leaves this .aspx file and comes back to this .aspx file I can load the value into the hidden text box from the session variable.
View 11 RepliesI have one big DataTable with X rows. I want to select Y rows from it and bind them to a new ViewList. While doing it, I want to delete these rows from the DataTable (Having X - Y rows).
What is the best and fast way to do it?
I don't know if it is better to create a new DataTable to have the Y and after that bind them to a ViewList or something else?
I'm also looking for example in code how to select/delete rows from DataTable.
I have a DataTable of available time slots. I have another DataTable of reserved time slots. I need to remove from the list of available slots the ones that have been reserved. The blocks are in 15 minute increments, but one of my problems is that the reservation can be longer than 15 minutes. I've had some luck removing one or two, but not all of the required columns.
Here's my code (it doesn't work right now).
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I have a datatable with morethan 100o records and around 6 to 7 columns. When I get the data into datatable, I use each field to get distinct values and display in different drodownlists. When all the dropdown lists are filled with data, user selects one of them to filter other dropdown lists with the selected value. I want to know how can I keep datatable data stored till I get all the filtering done. I dont want to store the datatable in session as it may occupy so much of memory. Is there any other way to store the datatable till the end of the process.
View 8 RepliesI have a datatable dt1 which has 3 columns a,b,c( of datatype string , float ,float resp). Then I've a datatable dt2 which is clone of dt1 , and the values of dt1 is merged into dt2.
Now the issue is for a particular condition :
when the first row is this
dt1.Rows.Add("xyz", 0.0, 0.0);
But I can see the value is taken as xyz,0,0 in the datatable. This i am merging to dt2 as
if (dt2 == null)
{
dt2 = dt1.Clone();
}
dt2.Merge(dt1, true);
Now when I merge for the second time with say some vale in dt1 as ("mnp",4.5,8.9) i get an error at dt2.Merge(dt1, true);
Error: .b and .b have conflicting properties: DataType property mismatch.
where b is the column name.
Have defined the table dt1 as :
DataTable dt1 = new DataTable();
dt1.Columns.Add("a", typeof(string));
dt1.Columns.Add("b", typeof(float));
dt1.Columns.Add("c", typeof(float));`
I have a LoginName1, LoginView and Login Status on my Master Page. Whenever a user logs himself in, the LoginName1 displays (as for example):
Welcome omarakhtar
Now the only thing I want is how to store this omarakhtar into some variable? Kindly, let me know.
I wanted a formatted text to be converted into unformatted text in the UI . for that I did the following
String strInput;
String strOutput;
strInput = txtEditorAnswer.Text;
strOutput = Regex.Replace(strInput, "<[^>]*>", String.Empty).Trim();
txtEditorAnswer.Text = strOutput;
txtEditorAnswer.Text = Server.HtmlEncode(txtEditorAnswer.Text);
but as it changes the value in the Database also, so its creating a problem for future. Now I need to change the text after being inserted into the database.
If I create a DataTable and give each column a type, such as Boolean, String, Int32, when I store it to a ViewState Variable will those types persist?
I'm using the DataTable in conjunction with a GridView that has an add row button. I'd like to store the current state in the DataTable then bind the GridView with the previous state.
I was having trouble at first trying to store objects in the DataTable, but now I'm treating like the SQL table I will eventually write to and it's making much more sense. That's why it has fields like boolean, for checkboxes.
I would like to store a collection of strings in the web.config. This collection would vary in size over time. I would like to be able to pull all of the strings in the collection into an array or collection in code. (.Net 4, asp.net)
i.e.
<customCodes>
<VendorCode vendorName="Name1" code="1234567891234567891324567987ddd" isActive="true"/>
<VendorCode vendorName="Name2" code="1sadfsadf1234567891324567987ddd" isActive="true" />
<VendorCode vendorName="Name3" code="123456789dfadfdsaf3324567987d32" isActive="true"/>
</customCodes>
I could use appsettings with the strings all in one value but I would like to seperate it out for organizational reasons. Not using the key/value pair complicates things a bit. I am now getting a message that states "you can't have duplicate elements in a section"
can we grab a global variable or Session or View State variable in the javascript or using jquery?
I have a web application which uses a session variable to store the logged in userid. If no user is logged in, of course this variable will be empty and the contents displayed on my website are meant for guests. If there is a user logged in, the user specific controls/access/links will then be a displayed.
I am now having issues with my hosting where on shared application pool, the worker recycle is triggered every 90 minutes, this will clear sessions causing all my users to be logged out. I opted for a dedicated application pool, which got worse because I am only allocated 50MB memory limit and if this is reached, the worker recycle is triggered and I lose my sessions again. I have tried as much as possible optimization techniques, e.g. dispose where possible, close connections, disable viewstate for static controls etc but my memory per instance keeps building up from page to page without any signs of improvement. I don't use loops nor store huge objects like bitmaps etc but my sessions are now gone even faster than 90 minutes in shared application pool before.
I have considered using SQL Session State but there isn't a simple guide on using this with MySQL. I am getting desperate and considering using a public variable, a string as a replacement to store logged in user id instead of in a session variable. I am pretty sure this will solve my issue with sessions being recycled but are there any negative consequences of doing this? One problem I can think of is if the user closes the browser, the system will never know that the user is now logged out and this public variable should be nothing. In this scenario, will the GC eventually clear this abandoned public variable.
What would be the proper syntax in ASP.NEt 3.5 C# to assign a TextBox value to a temporary or session variable to be manipulated (added, subtracted, multiplied, divided) at different points in the application? I want to add a decimal number to this variable in almost every instance as well.
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