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Session.Abandon lets you access the session variables until the page goes out of scope (e.g. you redirect the user to another page). Session.Clear removes the variables instantly.
Deja View - the feeling that you've seen this post before.
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Session.Abandon marks the Session object to be abandoned. When the current request is finished, the Session object will be removed, but it's available as long as the code is running. When the user makes another request, a new Session object will be created.
Session.Clear only removes the session variables from the current Session object. The Session object itself will not be removed.
---
single minded; short sighted; long gone;
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i am using the following code
Session["Sonia"] = "11";
Session["Sonia1"] = "12";
Session.Clear();
it renders the Session["Sonia"] and session["Sonia1"] to null.
Session["Sonia"] = "11";
Session["Sonia1"] = "12";
Session.Abandon();
leaves the session["Sonia"] AND Session["Sonia"] AS IT IS.
Is this what u mean to say.
Sonia Gupta
Soniagupta1@yahoo.co.in
Yahoo messengerId-soniagupta1
Love is Friendship and Friendship is Love....
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Sonia Gupta wrote: Session["Sonia"] = "11";
Session["Sonia1"] = "12";
Session.Abandon();
leaves the session["Sonia"] AND Session["Sonia"] AS IT IS.
Is this what u mean to say.
This is correct. Once you leave the scope of the request, Session["Sonia"] and Session["Sonia1"] will be removed, but until then you can still access these variables.
Deja View - the feeling that you've seen this post before.
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but the fucntion session.clear() clears the session values not the session key.
here session.clear() clears the session key as well, y this is happening
Sonia Gupta
Soniagupta1@yahoo.co.in
Yahoo messengerId-soniagupta1
Love is Friendship and Friendship is Love....
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Sonia Gupta wrote: but the fucntion session.clear() clears the session values not the session key.
No, it doesn't clear the values, it removes the items.
Sonia Gupta wrote: here session.clear() clears the session key as well, y this is happening
The Session.Keys collection is a collection of the names in the Session.Items collection. As Session.Clear removes all the items in Session.Items, the Session.Keys collection also becomes empty.
---
single minded; short sighted; long gone;
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one thing i wanted to make clarification about is that
session.abandon() does not remove the key or the value until we navigate to another page.Once the use navigates to another page , both the key and the value gets removed.
and as far as the removing of session key and value is concerned , session.clear() method is sufficient , according to my understanding . Then What's the need of session.abandon()?
Sonia Gupta
Soniagupta1@yahoo.co.in
Yahoo messengerId-soniagupta1
Love is Friendship and Friendship is Love....
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Suppose that you want to continue working with the session in the context of the page, but you want the session to be cleared when you leave the page. If your page hosts another page in an iframe, then the inner page also has access to the session variable. This means that you can abandon the variable in the Page_Load, and still access it in the inner page.
Deja View - the feeling that you've seen this post before.
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session.abandon removes the key and the value. right?
Sonia Gupta
Soniagupta1@yahoo.co.in
Yahoo messengerId-soniagupta1
Love is Friendship and Friendship is Love....
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Eventually yes.
Deja View - the feeling that you've seen this post before.
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in, Session.Clear()
Session key also remove.
coz..
foreach (string ste in Session.Keys)
{
Response.Write(ste + ":" + Session[ste]);
Response.Write("
");
}
O/p is nothing.
Never Think That You Have Failed Instead Always Think That u hav Better Chance Next Time...
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What does this have to do with Session.Abandon removing the keys?
Deja View - the feeling that you've seen this post before.
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in, Session.Clear()
Session key also remove.
coz..
foreach (string ste in Session.Keys)
{
Response.Write(ste + ":" + Session[ste]);
Response.Write("
");
}
O/p is nothing.
Never Think That You Have Failed Instead Always Think That u hav Better Chance Next Time...
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Sonia Gupta wrote: session.abandon removes the key and the value. right?
No, it doesn't.
It marks the Session object for removal. When the request finishes, the entire Session object is removed. The items are never removed from the Session object.
---
single minded; short sighted; long gone;
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Sonia Gupta wrote: i am using the following code
Session["Sonia"] = "11";
Session["Sonia1"] = "12";
Session.Clear();
it renders the Session["Sonia"] and session["Sonia1"] to null.
Actually, it removed the items. If it would just set the items to null, the Session.Count property would still return 2, but clearing the session items makes it return 0.
Sonia Gupta wrote: Session["Sonia"] = "11";
Session["Sonia1"] = "12";
Session.Abandon();
leaves the session["Sonia"] AND Session["Sonia"] AS IT IS.
Yes. The current session can't be removed until the current request is completed. That would be sawing off the branch you are sitting on.
---
single minded; short sighted; long gone;
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Guffa wrote: can't be removed until the current request is completed
What's the meaning of this line.
if u provide an example.
Sonia Gupta
Soniagupta1@yahoo.co.in
Yahoo messengerId-soniagupta1
Love is Friendship and Friendship is Love....
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public void generateTabularStructure(DataSet dsItems, HtmlTable tblTemp)
{
DataView dvItems = dsItems.Tables[0].DefaultView;
HtmlTableRow trTemp;
HtmlTableCell tdtemp;
for (int i = 0; i < dvItems.Count; i++)
{
HtmlTable objTable = null;
objTable = getArticleTable(dvItems[i]);
if (i % 2 == 0)
{
trTemp = new HtmlTableRow();
tblTemp.Rows.Add(trTemp);
}
tdtemp = new HtmlTableCell();
trTemp.Cells.Add(tdtemp);
tdtemp.Controls.Add(objTable);
tdtemp = new HtmlTableCell();
trTemp.Cells.Add(tdtemp);
tdtemp.InnerHtml = " ";
}
}
The above code when compiled gives error message
Use of unassigned local variable 'trTemp'
at the line which is bold
but for value i = 0 'trTemp' would be initialized in the if syntax before it is used so the error should not appear
any justification for this compilation error
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This is a compilation error. You have described a condition where the value is set at runtime, which the compiler can't know about.
To get round this, change your code to include the following:
HtmlTableRow trTemp = null;
HtmlTableCell tdtemp = null;
Deja View - the feeling that you've seen this post before.
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You're welcome.
Deja View - the feeling that you've seen this post before.
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I have 2 Excel files...
1. the original Excel file that was given to me to be converted to a dataset and so I could fill up the SQL Database.
2. the other is the one I retrieved from the database and then generated into an Excel document. used a similar procedure
to that of the tutorial here... a low-tech version of generating Excel files... using the XML spreadsheet style in one of the tutorials...
I open both Excel files (the original and generated excel file) and they look identical and they even contain the exact same data in each cells...
now here's the problem...I need to make a method that checks whether or not they're equivalent or not to see if any data is lost since checking each
cell of a large excel file would take a lot of time...
so I use OleDB that comes with C# Express since we're not suppose to use any 3rd party dlls...
for a temporary method to test whether they're equal is, I try to convert the 2 excel documents to 2 datasets and then compare the two generated datasets
whether or not they are equivalent to each other...
public static DataSet Method()
{
string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=FILE_PATH;Extended Properties=""Excel 8.0;HDR=YES;""";
OleDbConnection conn = new OleDbConnection(connectionString);
OleDbCommand cmd = new OleDbCommand("Select * from [Project List$]", conn);
cmd.CommandType = CommandType.Text;
OleDbDataAdapter myAdapter = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
try
{
myAdapter.Fill(ds);
return ds;
}
catch(OleDbException ex)
{
throw ex;
}
}
the original converts to a dataset with no problem but when I try to convert the one generated from the database is catches an OleDbException...
OleDBException was caught:
External table is not in the expected format.
how come? and is there any word around to this problem without using any 3rd party dlls? or downloading any additional dlls from Microsoft?
so we tried another method... used XmlDocument to get the dataset... and then compared it to one another and yet they were not equal? any suggestions?
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You are getting the exception because the excel file is in xml format. It should be in native xls file format for OleDb to work. You can use Excel object model to convert the xml file to excel format. I have described it here: Excel[^]
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I get the following error message when trying to run my tests (ctrl-shift-X) :
"column 'TestType' does not belong to table test".
Has anyone found a workaround for this ?
-- modified at 4:07 Monday 10th September, 2007
Johan Lombaard
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former - Albert Einstein
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This seems to be an issue with TFS (and possibly the testrun.config file0. To work round it, create a new test project and run with that.
Deja View - the feeling that you've seen this post before.
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Thanks Pete. I tried that, but I still get the stupid message 
Johan Lombaard
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former - Albert Einstein
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