is it correct syntax for session Related

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SQL-Server-2005

C#

ASP.NET

, +

if (!IsPostBack) {
			con.Open();
			cmd.Connection = con;

			for (j = 0; j <= Session.Keys.Count - 1; j++) {
				  a[j]=Session.Keys[j];

			}

I got the error below Line;
a[j]=Session.Keys[j];

Exception Details: System.IndexOutOfRangeException: There is no row at position 1.

Source Error:


Line 39: Label l = default(Label);
Line 40: l = (Label)v.FindControl("Label1");
Line 41: l.Text = dt.Rows[ctr]["Serial"] + ".";
Line 42: l = (Label)v.FindControl("Label2");
Line 43: dt.Rows[ctr]["question"]=l.Text ;


Source File: e:\Documents and Settings\Administrator\My Documents\Visual Studio 2010\WebSites\Subbu\WebSite6\Default2.aspx.cs Line: 41

i got Error below line

l.Text = dt.Rows[ctr]["Serial"] + ".";