C# - Storing Session Id As A String And Casting It Back To GUID?
Jul 19, 2010
I´m trying to use session to store a value (id). The problem is that I have to store it as a string. When trying to use the instance of the id I get the error:
Exception Details: System.InvalidCastException: Specified cast is not valid.
Source Error:
Line 156:
Line 157: Nemanet_Navigation newFile = new Nemanet_Navigation();
Line 158: newFile.Nav_pID = (Guid)Session["id"];
Line 159:
Line 160:
This is where I get the id and that seems to work fine. Session["id"] gets the value.
[code].....
View 3 Replies
Similar Messages:
Mar 10, 2011
I would like to insert a GUID into my table, then pass that variable to another page where I will use it in an email validation. Is this how you create a GUID?
[Code]....
Is this how I would insert it into my table?
[Code]....
View 6 Replies
Mar 29, 2010
I'm calling a method like this:
DataTable dtModifiedData = detailsGrid.GenerateRowColumnDataTable(Request.Form)
The GenerateRowColumnDataTable method retrieves all form variables with <input> tags. My problem is that my columns are named in a strange format like this:
#X#_G1_NAME_1 so when I look at what's being rendered I see %23X%23_G1_NAME_1 so I thought I could use Server.URLEncode() around Request.Form but I'm getting an errot that it can't be converted to a string. What would you do in this case?
View 7 Replies
May 18, 2010
I am trying to save the every date clicked in a List of Date using a session variable. I am getting a casting error ..."when casting a number the number must be less than infinity".
[Code]....
View 1 Replies
Feb 27, 2011
i'm having a gridview with textboxes and i'm allowing user to enter all the textboxes and when submit button is clicked, I'm constructing the Object and adding all the rows to LIST class.,After that i'm putting that LIST elements in a session. Everything is fine, But when i try to cast the session object to LIST type and pass it to XML serialization, I cannot see the elements in the list and it is showing LIST as NULL. I can see the generated XML string with ROOT and my classname as attributes without no data.
Here is the below code:
[Code]....
View 16 Replies
Mar 8, 2011
i am currently storing my shopping cart in a datatable assigned to the session. but i wanted to know is it a good idea to store the GUID for the session shopping cart?
View 6 Replies
Jan 22, 2010
I have a problem while creating a web application using LinqTemplate here is the explanation step wise....
1.I have created a database with a table name UserTest with one column name UserId with uniqidentifier datatype2. I have created a classLiberary Project where i have used LinqTemplate of subsonic for code Generation of DAL and created a partial class for UserTest
public partial class TestUser:Classes
{
public int Insert(TestUser user)
[code]...
Now when I Build the project it build successfully and when i run the project it shows
the UserTest.aspx page with a button but when i click on button it must insert the new guid value into the table butit throws an exception
[InvalidCastException: Object must implement IConvertible.]
System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider) +2560525
System.Data.SqlClient.SqlParameter.CoerceValue(Object value, MetaType destinationType) +414
[InvalidCastException: Failed to convert parameter value from a Guid to a String.]
TestPages.UserEdit.btnCreateNewAccount_Click(Object sender, EventArgs e) in D:TestPagesUserEdit.aspx.cs:61
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
View 1 Replies
Sep 18, 2010
[Code]....
Column UserId = uniqueidentifier
Compilation Error
Description:
An error occurred during the compilation of a resource required to service
this request. Please review the following specific error details and modify your
source code appropriately. Compiler Error Message: CS0019:
Operator '==' cannot be applied to operands of type 'string' and
'System.Guid'Source Error:
[Code]....
Line 93:
Line 94: var creditcard = from c in db.tbl_Payments
Line 95: where UserID == c.UserId
Line 96: select c;
Line 97:
View 4 Replies
Aug 22, 2010
I am trying to get the UserRole from the logged in user and send it to the database table my code is:
[Code]....
View 1 Replies
Mar 6, 2011
I know there are about a million posts on this topic, and I have attempeted to use many of them. However, I keep getting an error when I attempt a simple SQL update. Here is my code:
[Code]....
Here is my error:
[Code]....
View 3 Replies
Jun 3, 2010
I am trying to get the 'userid' of the logged in user using the code below:
"MembershipUser myObject = Membership.GetUser();
String userId = myObject.ProviderUserKey.ToString();"
and later using it as a parameter to the stored procedure.
The logic here is, the user should login first in order to retrieve his/her album. when the user is logged in, im retrieving the 'userid' and using it as parameter to load the corresponding album from the database.
when i login and open the albumpage, im end up with this exception:
"Failed to convert parameter value from a String to a Guid".
What could be the reason and how can i avoid this exception.
by the way im using the aspnet_Users table's userid field.
View 7 Replies
Jun 25, 2010
I am using the following code to convert any valid object, to a date time:
[Code]....
When i call this mehod from my web pages, using a blank("") value in TextBox.Text property as a parameter, the method is throwing an FormatException exception.
[Code]....
Ironically, the same method does not throw any exception with the same input when tried in a different machine.
Are there any regional setting that need to be modified in .NET 2.0 for this to work ?
P.S:
The method also works when called using a string variable, like
[Code]....
[Code]....
View 4 Replies
Jan 29, 2011
How do you create a dictionary of objects in the session? More specifically, I have a list of objects: MyList stores MyObject as the result of a linq query with the date as a parameter.
List<MyObject> Mylist;
MyList = GetObjects(TheDate);
Now I'd like to store MyList in the session object in a dictionary with the date as the key. When the page needs a MyList for a specific date, first search the dictionary and if it's blank for that date, get the data from the GetObjects query and store the result in the dictionary in the session.
View 1 Replies
Aug 30, 2010
When 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 Replies
Jun 4, 2010
i m developing an application in .NET mvc2. i m using aspnetMembershipProvider for User registration and related activities. i need some custom information about user that i stored in a separate table (sysUser for example) and linked it to aspnetUser table through foreign key. after Login i need to fetch user's credentials from sysUser table and push it to the session. For this Account controller's Logon method seemed best to me and i pasted following code in my Logon ActionResult
[Code]....
The code is working perfectly for me and put my desired information in the session but the thing is that if a user selects Remember me and on his next visit he won't have to Log in and i would not find my desired information in the Session. where should i put my code that stores the user information in the session.
View 1 Replies
Jan 29, 2011
What is the difference between (Caching) and [storing] variables in session?
View 3 Replies
Feb 10, 2010
I have created a custom user creation wizard to store custom user information, This is working fine. I am now trying to create a new page to give the newly created user to create users in there own company, so i need to retrieve the company information from the user profile created and automaticlly fill that information into the new create user wizard. ie User from A company logs in. (company_id from profile is stored in session)
User A wants to make another user in company A (but cannot make a user in company B) User A fills in details for new user, Company A information is autofill into new user info. (possibly from session)
I have read alot about storing membership. info into session but i cannot find any code examples of how to do this. I need to find a way to store Company_id into session and then use that for creating a new user with the same Company_id.
View 7 Replies
Jan 19, 2011
i 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 Replies
Jan 29, 2011
I have this program in which I am trying to store a collection of values into a list and session
Example:
valueCollection = (List<Values>)Session["Value"];
I want to do the front end in a way which will show a table with each row showing a label and textbox. This would be too simple to do obviously but I want it to show 4 rows of the table by default and then the user can select "add another" this will then add another row onto the table with a label and textbox exactly similar to the 4 default. Everytime the user selects "add another" the table increments by 1.
View 1 Replies
Feb 16, 2010
Im in the process of developing a web application, and I wish to store a reasonable amount of data for each user.
This data will be accessed each time the page is refreshed.
The only 2 options that I have come up with is:
* Session Data
* Storing the information in a text file with random file names for each person
* Database
The first one I do not really want to use as it would bog down the server - the second one is cumbersome
Is there any other options?
If possible i was thinking using the database, but am hesitant because of the amount of times the accessing of the database would need (every refresh for every user)
I dont want to store the information inside the viewstate (i dont know what MS was thinking when they thought of viewstate)
View 2 Replies
Nov 11, 2010
anybody tell me how can i check session is storing value or not?
actully i am using first time session variable to store datatable gridview but do't know that is saving value or not actully in my grid when user inser first row entry then it is ok when click on new row button then new row generate but previous row value lost.
View 6 Replies
Oct 20, 2010
Is it possible to store gridview session data after each postback. I have a gridview and a checkbox within. Each time a user clicks the checkbox, I like to store the gridview ID in a session. After browsing through various pages, I like this session datato continuously store the information up to 20mins?
How can I continously store the session variable. Say a text box and if I enter 1 click on a hyperlink (where session variable is stored) return back to the page, enter 2 click hyperlink then I should get in the session 12?
View 6 Replies
Aug 24, 2010
I have an ASP.NET web form that has a "container" usercontrol that hosts several custom user controls on the page. The controls can be hosted directly in the container or can be children of other usercontrols. The container usercontrol has several public properties exposed that I sometimes need to get to from within the child user controls. I've been using some form of "this.Parent" or "this.Parent.Parent" to get back to the base control.
What would be the impact of storing a reference to "this" into Session from the base control so I can access it from within the event handlers within the user controls?
View 1 Replies
Dec 17, 2010
I 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...
View 6 Replies
Mar 31, 2011
I've read that you can store classes directly into a session variable i.e.
Session["var"] = myclass;
My question is how the memory management works. Does it automatically serialize this into the session on the client side?
Or does it hold the data for the instance of the class in server memory, and just holds a reference in the session object?
View 4 Replies
