Getting “Database Logon Error” in Crystal Report While Navigating Next Page

Question

I have Developed Below Code for Crystal Report in ASP.NET and C# (Dataset), I have Multiple Pages in report i am getting 1st page Properly but while Navigating next page i am getting logon error.

public partial class WSDayBookReport : System.Web.UI.Page
{
    SQLClass sqlfunc = new SQLClass();
    DayBookDataSet dset = new DayBookDataSet();
    ReportDocument rdoc;
}
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Page_Unload(object sender, EventArgs e)
{
    try
    {
        rdoc.Close();
        rdoc.Dispose();
        rdoc = null;
    }
    catch (Exception ex)
    {
    }
}
public void OpeningStock()
{
    string qry = "select  i.ItemGroupID, ig.ItemGroupCode As ItemGroupCode, Sum(iss.RegularStock) As OpeningStock from ItemStock iss, Item i, ItemGroup ig where ig.ItemGroupID = i.ItemGroupID AND iss.ItemID = i.ItemId group by i.ItemGroupID,ig.ItemGroupCode";
    sqlfunc.GetDataFromDT(dset.ItemGroupStock, qry, "sqlcon");
    var q1 = from igs in dset.ItemGroupStock.AsEnumerable()
             select igs;
    foreach (var res in q1)
    {
        res.ConsumedStock = 0;
        res.ClosingStock = 0;
    }
    dset.AcceptChanges();
    //Response.Write(dset.ItemGroupStock.Rows.Count.ToString() + "=Opening Stock");
}
public void loadUser()
{
    string qry = "select pp.PersonnelParticularID As UserID, pp.PersonnelName As UserName from WineOrder wo, WineOrderDetail wod, PersonnelParticular pp, ItemGroup ig, Item i where pp.PersonnelParticularID = wo.IssuedToPersonnelID AND ig.ItemGroupID = i.ItemGroupID AND i.ItemID = wod.ItemID AND wod.IsOrderCancelled = 0 AND wod.WineOrderId = wo.WineOrderId AND wo.WineOrderDate ='" + Convert.ToDateTime(txtDate.Text).ToString("MM/dd/yyyy") + "' group by pp.PersonnelParticularID,pp.PersonnelName";
    sqlfunc.GetDataFromDT(dset.UserMaster, qry, "sqlcon");
    qry = "select  pp.PersonnelParticularID As UserID,ig.ItemGroupID, sum(wod.OrderQty) As ConsumptionQty from WineOrder wo, WineOrderDetail wod, ItemGroup ig, Item i, PersonnelParticular pp where pp.PersonnelParticularID = wo.IssuedToPersonnelID AND ig.ItemGroupID = i.ItemGroupID AND i.ItemID = wod.ItemID AND wod.IsOrderCancelled = 0 AND wod.WineOrderId = wo.WineOrderId AND wo.WineOrderDate='" + Convert.ToDateTime(txtDate.Text).ToString("MM/dd/yyyy") + "' group by ig.ItemGroupID, pp.PersonnelParticularID";
    sqlfunc.GetDataFromDT(dset.UserConsume, qry, "sqlcon");
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
    dset = new DayBookDataSet();
    OpeningStock();
    loadUser();
    //Deducting new RU Entry after the entered date...
    DataTable dtTemp = new DataTable();
    string qry2 = "select Sum(rs.Quantity) As Qty,i.ItemGroupID from RegularStock rs, Item i where i.ItemID = rs.ItemID AND rs.RSDate>='" + Convert.ToDateTime(txtDate.Text).ToString("MM/dd/yyyy") + "' Group by i.ItemGroupID";
    sqlfunc.GetDataFromDT(dtTemp, qry2, "sqlcon");
    if (dtTemp.Rows.Count > 0)
    {
        for (int i = 0; i < dtTemp.Rows.Count; i++)
        {
            var q5 = from igs in dset.ItemGroupStock.AsEnumerable()
                     where igs.ItemGroupID == Convert.ToInt32(dtTemp.Rows[i][1].ToString())
                     select igs;
            foreach (var res in q5)
            {
                res.OpeningStock -= Convert.ToDecimal(dtTemp.Rows[i][0].ToString());
            }
        }
    }
    //Adding cosumed stock from the entered date.
    dtTemp = new DataTable();
    string qry = "select  ig.ItemGroupID, sum(wod.OrderQty) As ConsumptionQty from WineOrder wo, WineOrderDetail wod, ItemGroup ig, Item i where ig.ItemGroupID = i.ItemGroupID AND i.ItemID = wod.ItemID AND wo.IssuedToPersonnelID is not null AND wod.IsOrderCancelled = 0 AND wod.WineOrderId = wo.WineOrderId AND wo.WineOrderDate>='10-01-2015' group by ig.ItemGroupID";
    sqlfunc.GetDataFromDT(dtTemp, qry, "sqlcon");
    if (dtTemp.Rows.Count > 0)
    {
        for (int i = 0; i < dtTemp.Rows.Count; i++)
        {
            var q5 = from igs in dset.ItemGroupStock.AsEnumerable()
                     where igs.ItemGroupID == Convert.ToInt32(dtTemp.Rows[i][0].ToString())
                     select igs;
            foreach (var res in q5)
            {
                res.OpeningStock += Convert.ToDecimal(dtTemp.Rows[i][1].ToString());
            }
        }
    }
    dset.AcceptChanges();
    var qry10 = from us in dset.UserConsume.AsEnumerable()
                group us by us.ItemGroupID into g
                select new
                {
                    TOTAL = g.Sum(x => x.ConsumptionQty),
                    IG = g.Key
                };
    foreach (var res in qry10)
    {
        //Response.Write(res.IG.ToString() +"-"+res.TOTAL.ToString()+ "----------");
        var qrry = from igs in dset.ItemGroupStock.AsEnumerable()
                   where igs.ItemGroupID == res.IG
                   select igs;
        foreach (var res2 in qrry)
        {
            res2.ClosingStock = res2.OpeningStock - res.TOTAL;
        }
    }
    rdoc = new ReportDocument();
    rdoc.Load(Server.MapPath("~/Report/WSDayBookRpt.rpt"));
    rdoc.SetDataSource(dset);
    CrystalReportViewer1.DataBind();
    CrystalReportViewer1.ReportSource = rdoc;
    CrystalReportViewer1.RefreshReport();
}
}

Please Help me out .. i have tried using session but in that i am not able to navigate after 2nd Page and if i use to write page number for navigation its working properly...

Thanks And Regards,

UPDATE

public partial class WSDayBookReport : System.Web.UI.Page

{
    SQLClass sqlfunc = new SQLClass();
    ReportDocument rdoc = new ReportDocument();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Page.IsPostBack)
        {
            if (Session["CRpt"] != null)
            {
                rdoc =(ReportDocument) Session["CRpt"];
            }
            CrystalReportViewer1.ReportSource = rdoc;
            CrystalReportViewer1.RefreshReport();
        }
        else
        {
            // 'NOT POSTBACK
        }
    }

    protected void Page_Unload(object sender, EventArgs e)
    {
        if (Session["CRpt"] != null)
        {
            Session.Remove("CRpt");
        }
        Session["CRpt"]=rdoc;
    }

protected void btnSubmit_Click(object sender, EventArgs e)
{
    DayBookDataSet dset = new DayBookDataSet();
    //OpeningStock();
    string qry = "select  i.ItemGroupID, ig.ItemGroupCode As ItemGroupCode, Sum(iss.RegularStock) As OpeningStock from ItemStock iss, Item i, ItemGroup ig where ig.ItemGroupID = i.ItemGroupID AND iss.ItemID = i.ItemId group by i.ItemGroupID,ig.ItemGroupCode";
    sqlfunc.GetDataFromDT(dset.ItemGroupStock, qry, "sqlcon");
    var q1 = from igs in dset.ItemGroupStock.AsEnumerable()
             select igs;
    foreach (var res in q1)
    {
        res.ConsumedStock = 0;
        res.ClosingStock = 0;
    }
    // loadUser();
    qry = "select pp.PersonnelParticularID As UserID, pp.PersonnelName As UserName from WineOrder wo, WineOrderDetail wod, PersonnelParticular pp, ItemGroup ig, Item i where pp.PersonnelParticularID = wo.IssuedToPersonnelID AND ig.ItemGroupID = i.ItemGroupID AND i.ItemID = wod.ItemID AND wod.IsOrderCancelled = 0 AND wod.WineOrderId = wo.WineOrderId AND wo.WineOrderDate='" + Convert.ToDateTime(txtDate.Text).ToString("MM/dd/yyyy") + "' group by pp.PersonnelParticularID,pp.PersonnelName";
    sqlfunc.GetDataFromDT(dset.UserMaster, qry, "sqlcon");
    if (dset.UserMaster.Rows.Count == 0)
    {
        lblStatus.Text = "No Consumption on selected date.";
        CrystalReportViewer1.ReportSource = null;
        if (Session["ssnRdoc"] != null)
        {
            Session.Remove("ssnRdoc");
        }

        return;
    }
    else
    {
        lblStatus.Text = "";
    }

    //user consumption
    qry = "select  pp.PersonnelParticularID As UserID,ig.ItemGroupID, sum(wod.OrderQty) As ConsumptionQty from WineOrder wo, WineOrderDetail wod, ItemGroup ig, Item i, PersonnelParticular pp where pp.PersonnelParticularID = wo.IssuedToPersonnelID AND ig.ItemGroupID = i.ItemGroupID AND i.ItemID = wod.ItemID AND wod.IsOrderCancelled = 0 AND wod.WineOrderId = wo.WineOrderId AND wo.WineOrderDate='" + Convert.ToDateTime(txtDate.Text).ToString("MM/dd/yyyy") + "' group by ig.ItemGroupID, pp.PersonnelParticularID";
    sqlfunc.GetDataFromDT(dset.UserConsume, qry, "sqlcon");
    dset.AcceptChanges();
    ViewState.Add("vsDset", dset);
    //Deducting new RU Entry after the entered date...
    DataTable dtTemp = new DataTable();
    string qry2 = "select Sum(rs.Quantity) As Qty,i.ItemGroupID from RegularStock rs, Item i where i.ItemID = rs.ItemID AND rs.RSDate>='" + Convert.ToDateTime(txtDate.Text).ToString("MM/dd/yyyy") + "' Group by i.ItemGroupID";
    sqlfunc.GetDataFromDT(dtTemp, qry2, "sqlcon");
    if (dtTemp.Rows.Count > 0)
    {
        for (int i = 0; i < dtTemp.Rows.Count; i++)
        {
            var q5 = from igs in dset.ItemGroupStock.AsEnumerable()
                     where igs.ItemGroupID == Convert.ToInt32(dtTemp.Rows[i][1].ToString())
                     select igs;
            foreach (var res in q5)
            {
                res.OpeningStock -= Convert.ToDecimal(dtTemp.Rows[i][0].ToString());
            }
        }
    }
    //Adding cosumed stock from the entered date.
    dtTemp = new DataTable();
    qry = "select  ig.ItemGroupID, sum(wod.OrderQty) As ConsumptionQty from WineOrder wo, WineOrderDetail wod, ItemGroup ig, Item i where ig.ItemGroupID = i.ItemGroupID AND i.ItemID = wod.ItemID AND wo.IssuedToPersonnelID is not null AND wod.IsOrderCancelled = 0 AND wod.WineOrderId = wo.WineOrderId AND wo.WineOrderDate>='" + Convert.ToDateTime(txtDate.Text.Trim()).ToString("MM/dd/yyyy") + "' group by ig.ItemGroupID";
    sqlfunc.GetDataFromDT(dtTemp, qry, "sqlcon");
    if (dtTemp.Rows.Count > 0)
    {
        for (int i = 0; i < dtTemp.Rows.Count; i++)
        {
            var q5 = from igs in dset.ItemGroupStock.AsEnumerable()
                     where igs.ItemGroupID == Convert.ToInt32(dtTemp.Rows[i][0].ToString())
                     select igs;
            foreach (var res in q5)
            {
                res.OpeningStock += Convert.ToDecimal(dtTemp.Rows[i][1].ToString());
            }
        }
    }
    dset.AcceptChanges();
    var qry10 = from us in dset.UserConsume.AsEnumerable()
                group us by us.ItemGroupID into g
                select new
                {
                    TOTAL = g.Sum(x => x.ConsumptionQty),
                    IG = g.Key
                };
    foreach (var res in qry10)
    {
        var qrry = from igs in dset.ItemGroupStock.AsEnumerable()
                   where igs.ItemGroupID == res.IG
                   select igs;
        foreach (var res2 in qrry)
        {
            res2.ClosingStock = res2.OpeningStock - res.TOTAL;
        }
    }
    ViewState.Add("vsDset", dset);
    rdoc.Load(Server.MapPath("~/Report/WSDayBookRpt.rpt"));
    rdoc.SetDataSource(dset);
    CrystalReportViewer1.DataBind();
    CrystalReportViewer1.ReportSource = rdoc;
    CrystalReportViewer1.RefreshReport();
    Session["CRpt"]= rdoc;
}
}

Answer 1

Your CrystalReportViewer control is probably loosing the ReportDocument on PostBack. You will have to do it as follows:

Declare your ReportDocument object at page level

ReportDocument rdoc = new ReportDocument();

In the Page_Load event load your ReportDocument from Session object

protected void Page_Load(System.Object sender, System.EventArgs e) {
    if (Page.IsPostBack) {
        if (Session.Item("CRpt") != null) {
            rdoc = Session.Item("CRpt");
        }
        CrystalReportViewer1.ReportSource = rdoc;
        CrystalReportViewer1.RefreshReport();
    } else {
        'NOT POSTBACK
        if (Session.Item("CRpt") != null) {
            Session.Remove("CRpt");
        }
        Session.Add("CRpt", rdoc);
    }
}

On the btnSubmit create and add your ReportDocument to Session

protected void btnSubmit_Click(object sender, EventArgs e) {

    //Populate Report 
    rdoc.SetDataSource(dset);
    CrystalReportViewer1.ReportSource = rdoc;
    Session.Add("CRpt", rdoc);
}

Besides this if you need specific help in setting LogOnInfo then you may also check this SO post Report asking for database login on setting DataTable as DataSource