I get a error when trying to print.

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ASP.NET

I have a print button on a web project form. When a user clicks the print button nothing happens. When the user clicks the print button again an error is thrown. How can this be fixed and why does it happen?

Code Error:

 Conversion failed when converting the varchar value 'inst_id' to data type int.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Conversion failed when converting the varchar value 'inst_id' to data type int.

Source Error:


Line 51:         SqlDataReader dr3 = scmd3.ExecuteReader();
Line 52: 
Line 53:         if (dr.Read())
Line 54:         if (dr2.Read())
Line 55:         if (dr3.Read())


Source File: C:\Users\khopkins\Documents\Visual Studio 2010\Projects\SACSCOCLogin1.1\SACSCOCLogin1.1\FinancialProfileFormA.aspx.cs    Line: 53

Stack Trace:


[SqlException (0x80131904): Conversion failed when converting the varchar value 'inst_id' to data type int.]
   System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +1767866
   System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5352418
   System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +244
   System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +1691
   System.Data.SqlClient.SqlDataReader.TryHasMoreRows(Boolean& moreRows) +322
   System.Data.SqlClient.SqlDataReader.TryReadInternal(Boolean setTimeout, Boolean& more) +230
   System.Data.SqlClient.SqlDataReader.Read() +34
   FinancialProfileFormA.Page_Load(Object sender, EventArgs e) in C:\Users\khopkins\Documents\Visual Studio 2010\Projects\SACSCOCLogin1.1\SACSCOCLogin1.1\FinancialProfileFormA.aspx.cs:53
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +92
   System.Web.UI.Control.LoadRecursive() +54
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772

Here is code for the Print button:

protected void ButtonPrint_Click(object sender, EventArgs e)
    {
        Session["inst_id"] = TextBoxINST_ID;
        ClientScript.RegisterStartupScript(this.GetType(), "onclick", "<script language=javascript>window.open('ReportFormA.aspx','PrintMe','height=300px,width=300px,scrollbars=1');</script>");
    }
}

Here is the code for the Print Helper:

sing System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
using System.Web.SessionState;

public class PrintHelper
{
    public PrintHelper()
    {
    }

    public static void PrintWebControl(Control ctrl)
    {
        PrintWebControl(ctrl, string.Empty);
    }

    public static void PrintWebControl(Control ctrl, string Script)
    {
        StringWriter stringWrite = new StringWriter();
        System.Web.UI.HtmlTextWriter htmlWrite = new System.Web.UI.HtmlTextWriter(stringWrite);
        if (ctrl is WebControl)
        {
            Unit w = new Unit(100, UnitType.Percentage); ((WebControl)ctrl).Width = w;
        }
        Page pg = new Page();
        pg.EnableEventValidation = false;
        if (Script != string.Empty)
        {
            pg.ClientScript.RegisterStartupScript(pg.GetType(), "PrintJavaScript", Script);
        }
        HtmlForm frm = new HtmlForm();
        pg.Controls.Add(frm);
        frm.Attributes.Add("runat", "server");
        frm.Controls.Add(ctrl);
        pg.DesignerInitialize();
        pg.RenderControl(htmlWrite);
        string strHTML = stringWrite.ToString();
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.Write(strHTML);
        HttpContext.Current.Response.Write("<script>window.print();</script>");
        HttpContext.Current.Response.End();
    }
}

Here is the code for the Report Form A page:

using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using CrystalDecisions.Web;
using System.Web.UI.WebControls.WebParts;
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Xml.Linq;
using System.Web.SessionState;


namespace SACSCOCLogin1._1
{
    public partial class ReportFormA : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Session["inst_id"] = "inst_id";
            CrystalReportViewer1.Visible = true;
            ReportDocument crystalReport = new ReportDocument();
            crystalReport.Load(Server.MapPath("~/Reports/ReportA.rpt"));
            CrystalReportViewer1.ReportSource = crystalReport;
        }
        
    }
}