Session array in c#

[NCZIMM]

I am trying to create a session array then use the array in a foreach. I get
an error saying: "foreach statement cannot operate on variables of type
'object' because 'object' does not contain a definition for 'GetEnumerator' ,
or it is inaccessible"

The session is necessary because of postback

There are three steps here:
1. populate an array.
2. copy the array to a session array.
3. do foreach om the session array.

//step 1.-------------------------------
private void Save_Click(obje ct sender, System.EventArg s e)
{
enrarray.Add(ne w
EnrollList(prog id,Int32.Parse( Session["enroleeid"].ToString()),In t32.Parse(Sessi on["sessionid"].ToString()),In t32.Parse(Sessi on["classid"].ToString()),In t32.Parse(Sessi on["tsid"].ToString()),Se ssion["enrolee"].ToString(),Ses sion["sessnm"].ToString(),Ses sion["classnm"].ToString(),Ses sion["tslot"].ToString()));

//step 2-----------------
Session["enr"]=enrarray;
}

//step 3-----------------------
private void Button1_Click(o bject sender, System.EventArg s e)
{

this.messagebox .Text="records "+enrarray.Coun t.ToString();

foreach(EnrollL ist tmp in Session["enr"])
{
tmp.saveenrl();
}
}

//error message---------------------------

c:\inetpub\wwwr oot\BrighamPR\E nroll.aspx.cs(4 81): foreach statement cannot
operate on variables of type 'object' because 'object' does not contain a
definition for 'GetEnumerator' , or it is inaccessible
Thanks in advance

NZ

[Morten Wennevik]

Hi NCZIMM,

Session variables are stored as objects so when you retrieve a variable
you will need to cast it to its original type before using it.

Your code doesn't appear to be telling what kind of array you are using,
so in case of a string array use this:

string[] s = (string[])Session("enr") ;
--
Happy Coding!
Morten Wennevik [C# MVP]

[NCZIMM]

Thanks, your help led to this solution:

ArrayList enrs = (ArrayList)Sess ion["enr"];

I have another issue with part of the same code. the following is intended
to allow me to add multiple persons to the array each time the save buttom is
clicked (Save_Click). But, When I activate the Button1_Click (what you just
helped me with) there is only one record in the array. This is a big HUH??
for me (I am new to C# and ASP).

private void Save_Click(obje ct sender, System.EventArg s e)
{
enrarray.Add(ne w
EnrollList(prog id,Int32.Parse( Session["enroleeid"].ToString()),In t32.Parse(Sessi on["sessionid"].ToString()),In t32.Parse(Sessi on["classid"].ToString()),In t32.Parse(Sessi on["tsid"].ToString()),Se ssion["enrolee"].ToString(),Ses sion["sessnm"].ToString(),Ses sion["classnm"].ToString(),Ses sion["tslot"].ToString()));
Session["enr"]=enrarray;
}

"Morten Wennevik" wrote:

Hi NCZIMM,

Session variables are stored as objects so when you retrieve a variable
you will need to cast it to its original type before using it.

Your code doesn't appear to be telling what kind of array you are using,
so in case of a string array use this:

string[] s = (string[])Session("enr") ;
--
Happy Coding!
Morten Wennevik [C# MVP]

[Morten Wennevik]

NCZIMM,

Try retrieving the stored arraylist before adding the new item

private void Save_Click(obje ct sender, System.EventArg s e)
{

enrarray = (ArrayList)Sess ion["enr"];
enrarray.Add(ne w
EnrollList(prog id,Int32.Parse( Session["enroleeid"].ToString()),In t32.Parse(Sessi on["sessionid"].ToString()),In t32.Parse(Sessi on["classid"].ToString()),In t32.Parse(Sessi on["tsid"].ToString()),Se ssion["enrolee"].ToString(),Ses sion["sessnm"].ToString(),Ses sion["classnm"].ToString(),Ses sion["tslot"].ToString()));

Session["enr"]=enrarray;
}
On Thu, 4 Nov 2004 12:55:03 -0800, NCZIMM
<NC****@discuss ions.microsoft. com> wrote:

Thanks, your help led to this solution:

ArrayList enrs = (ArrayList)Sess ion["enr"];

I have another issue with part of the same code. the following is
intended
to allow me to add multiple persons to the array each time the save
buttom is
clicked (Save_Click). But, When I activate the Button1_Click (what you
just
helped me with) there is only one record in the array. This is a big
HUH??
for me (I am new to C# and ASP).

private void Save_Click(obje ct sender, System.EventArg s e)
{
enrarray.Add(ne w
EnrollList(prog id,Int32.Parse( Session["enroleeid"].ToString()),In t32.Parse(Sessi on["sessionid"].ToString()),In t32.Parse(Sessi on["classid"].ToString()),In t32.Parse(Sessi on["tsid"].ToString()),Se ssion["enrolee"].ToString(),Ses sion["sessnm"].ToString(),Ses sion["classnm"].ToString(),Ses sion["tslot"].ToString()));
Session["enr"]=enrarray;
}

"Morten Wennevik" wrote:

Hi NCZIMM,

Session variables are stored as objects so when you retrieve a variable
you will need to cast it to its original type before using it.

Your code doesn't appear to be telling what kind of array you are using,
so in case of a string array use this:

string[] s = (string[])Session("enr") ;
--
Happy Coding!
Morten Wennevik [C# MVP]

--
Happy Coding!
Morten Wennevik [C# MVP]