ERROR : Exception from HRESULT: 0x800A03EC - ASP.NET Discussion Boards

Re: How to unload an assembly?

Paul Conrad28-Jul-08 19:58

Paul Conrad

28-Jul-08 19:58

What have you tried doing?

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: How to unload an assembly?

amit.jha28-Jul-08 20:08

amit.jha

28-Jul-08 20:08

I am creating a dll at run time. When i need to refer that dll i have to laod the assembly and get the reference. Till here its working fine but now if i recompile this assembly to modify it message comes that this assembly can't be loaded as it is in progress.So before recompiling i have to unload that assembly.

Re: How to unload an assembly?

Christian Flutcher28-Jul-08 20:25

Christian Flutcher

28-Jul-08 20:25

You can't unload assemblies. You can unload application domain which hosts these assemblies. So all the assemblies will get unloaded. BTW, what this has to do with ASP.NET ?

Re: How to unload an assembly?

amit.jha28-Jul-08 20:50

amit.jha

28-Jul-08 20:50

I have to dynamically load and unload assemblies in .net website so that the assembly can be modified at runtime and recompiled.Assemblies can not be unloaded but how using appdomain i can unload an assembly.I am compiling my assembly at one page and using it by loading the assemble in different page.

Re: How to unload an assembly?

satyaanand.andra@gmail.com28-Jul-08 20:35

satyaanand.andra@gmail.com

28-Jul-08 20:35

in the Page_Unload Event,
make the object to null

it will be nullified and no problem will be in future compiling

Re: How to unload an assembly?

amit.jha28-Jul-08 20:53

amit.jha

28-Jul-08 20:53

This is the object of the class i am making.This object is used to get the methods of the assembly using reflection.Can u pls tell me which object i will make null?

Dim asm As [Assembly] = [Assembly].LoadFile(System.Web.HttpRuntime.AppDomainAppPath & "Bin\Mytext.dll")
Dim objAssembly As System.Reflection.Assembly = asm
Dim objTheClass As Object = objAssembly.CreateInstance("DynamicClass")

Re: How to unload an assembly?

satyaanand.andra@gmail.com28-Jul-08 23:18

satyaanand.andra@gmail.com

28-Jul-08 23:18

objAssembly

Make it null in the page unload event

ERROR : Exception from HRESULT: 0x800A03EC

varshavmane28-Jul-08 19:53

varshavmane

28-Jul-08 19:53

Hello All,

I am using ASP.NET 2005(C#). I want to show and save the excel file on server. For this I opened excel file in iframe and kept a save button outside the iframe. On Page Load I have the following code:

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            try
            {
                string fileName = AppDomain.CurrentDomain.BaseDirectory + "SaveExcelFile\\Excel1.xls";
                Microsoft.Office.Interop.Excel.Application ObjExcel = new Microsoft.Office.Interop.Excel.Application();
                Microsoft.Office.Interop.Excel.Workbook ObjWB;
                Microsoft.Office.Interop.Excel.Worksheet ObjWS;
                Object missing = System.Reflection.Missing.Value;
                if (ObjExcel == null)
                {
                    //'throw an exception
                    throw (new Exception("Unable to Start Microsoft Excel"));
                }
                else
                {
                    ObjExcel.Visible = true;
                    ObjExcel.DisplayAlerts = false;
                    ObjWB = ObjExcel.Workbooks._Open(fileName, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing);
                    ObjWS = (Microsoft.Office.Interop.Excel.Worksheet)ObjWB.ActiveSheet;
                    Session["ExcelObject"] = ObjExcel;
                    Session["WorkBook"] = ObjWB;
                    Session["WorkSheet"] = ObjWS;
                    htxtFileName.Value = "SaveExcelFile/Excel1.xls";
                }
            }
            catch (Exception ex)
            {
                Response.Write("Page Load Error : " + ex.Message);
            }
        }
    }

and On Save Button Click event I have the following code:

protected void btnSaveFileToServer_Click(object sender, EventArgs e)
    {
        try
        {
            if (Session["ExcelObject"] != null && Session["WorkBook"] != null && Session["WorkSheet"] != null)
            {
                Microsoft.Office.Interop.Excel.Application ObjExcel = (Microsoft.Office.Interop.Excel.Application)Session["ExcelObject"];
                Microsoft.Office.Interop.Excel.Workbook ObjWB = (Microsoft.Office.Interop.Excel.Workbook)Session["WorkBook"];
                Microsoft.Office.Interop.Excel.Worksheet ObjWS = (Microsoft.Office.Interop.Excel.Worksheet)Session["WorkSheet"];
                ObjExcel.ThisWorkbook.Save();
            }
        }
        catch (Exception ex)
        {
            Response.Write("ERROR : " + ex.Message);
        }
    }

The above code works fine on my machine but when I deploy it on server it gives error "ERROR : Exception from HRESULT: 0x800A03EC" while saving the file back to server.

Please help me.

Thanks in advance.

Re: ERROR : Exception from HRESULT: 0x800A03EC

Paul Conrad28-Jul-08 19:58

Paul Conrad

28-Jul-08 19:58

Have you tried googling with the error message as the search string. You might find what it means.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: ERROR : Exception from HRESULT: 0x800A03EC

varshavmane28-Jul-08 20:08

varshavmane

28-Jul-08 20:08

Thanks Paul for replying. Yes I have tried but didnt get much help Frown | :(

I am not able to figure out what is the exact problem in the code.

Please help me...

Re: ERROR : Exception from HRESULT: 0x800A03EC

Paul Conrad28-Jul-08 20:15

Paul Conrad

28-Jul-08 20:15

I've seen this kind of thing happen when there is an instance of Excel, ( or Word, doesn't really matter when using Office Interop ) that is not closed, and a New is invoked the second time through. I'd put a check in your code to make sure you are creating a single instance of Excel, and closing that instance when done with it.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: ERROR : Exception from HRESULT: 0x800A03EC

Paul Conrad28-Jul-08 20:17

Paul Conrad

28-Jul-08 20:17

In btnSaveFileToServer_Click....

ASP.NET 2.0 wrote:
Microsoft.Office.Interop.Excel.Worksheet ObjWS = (Microsoft.Office.Interop.Excel.Worksheet)Session["WorkSheet"];
ObjExcel.ThisWorkbook.Save();

Add something like ObjExcel.Quit, so you can dispose of the Excel app when done with it.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: ERROR : Exception from HRESULT: 0x800A03EC

varshavmane28-Jul-08 20:23

varshavmane

28-Jul-08 20:23

thanks for the reply Paul, but its not working. now the error is coming on page load it self and excel file is not getting saved Frown | :(

Please help me...

Thanks again.

Re: ERROR : Exception from HRESULT: 0x800A03EC

Paul Conrad28-Jul-08 20:25

Paul Conrad

28-Jul-08 20:25

Well, it's late here. I'm curious as to why this is a problem. I'll write my own little mock up of your code you are trying to do and see what is up. Stay tuned Smile | :)

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: ERROR : Exception from HRESULT: 0x800A03EC

varshavmane28-Jul-08 20:29

varshavmane

28-Jul-08 20:29

hey thanks Paul. I am trying this from yesterday but Frown | :(

First I was getting Error "Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005."

I solved that but now getting this error.

Thanks again.

Re: ERROR : Exception from HRESULT: 0x800A03EC

OleHansen21-Jul-09 21:44

OleHansen

21-Jul-09 21:44

Hi, found a possible solution here: http://www.made4dotnet.com/Default.aspx?tabid=141&aid=15

Re: ERROR : Exception from HRESULT: 0x800A03EC

priya_velan19-Oct-10 15:30

priya_velan

19-Oct-10 15:30

Hi,

I tried your code, I get the error even in my local dev machine.
The error when executing the line "ObjExcel.ThisWorkbook.Save();" is : "Exception from HRESULT: 0x800A03EC".
If you find the solution for the above, pls help me out to solve.

Thanks
Priya

vs2003 setup

Kissy1628-Jul-08 19:40

Kissy16

28-Jul-08 19:40

How to create a setup file for a webbased project which is developed in vs2003/msaccess.
I have created and installed.but it is unable to open.
How to give url??and step step by process i need.please give the steps to create.
i found something on the net but it is now so useful.let me know if anybody is free.

kissy

Re: vs2003 setup

Paul Conrad28-Jul-08 19:59

Paul Conrad

28-Jul-08 19:59

Kissy16 wrote:
but it is unable to open.

What is unable to open?

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: vs2003 setup

Kissy1628-Jul-08 20:20

Kissy16

28-Jul-08 20:20

the generated setup file,i have installed in a PC but it is not opening.

kissy

Re: vs2003 setup

Paul Conrad28-Jul-08 20:24

Paul Conrad

28-Jul-08 20:24

Does the target PC have the installer requirements to open the setup file? I've run into some machines that need to have the latest version of the Windows Installer stuff installed before setup files will work. Not sure if this is the case in your situation, but I'd double check that.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

System.Net.WebException--The underlying connection was closed:

pubududilena28-Jul-08 19:28

pubududilena

28-Jul-08 19:28

Hi All,

I have developed a ASP.NET application and I am using XML webservice.

In there I have set the timeout property as 10 minitues. But I am getting following error after one minitue.

The underlying connection was closed: The connection was closed unexpectedly.

code part is as follows
lobjService = new MyService();
lobjService .Timeout = 10 * 60 * 1000;
object[] results = lobjService .AgentAvailabilities(lobjCriteria);

How can I avoid the exception and take results? .

thanks in advance.

update progree bar in modal popup

Member 387988128-Jul-08 19:24

Member 3879881

28-Jul-08 19:24

Hi i want to show my update progress bar in inside modal popup control...,

And same time the parent form have to be disable mode...,

Plz any one guide me

Thanks & Regards,
NeW OnE,
please don't forget to vote on the post

Re: update progree bar in modal popup

Christian Graus28-Jul-08 20:10

Christian Graus

28-Jul-08 20:10

To do this, you need to make your calls using AJAX, so that you can update your page during it's progress.

Christian Graus

No longer a Microsoft MVP, but still happy to answer your questions.

how import print option in Report viewer

Guvera28-Jul-08 18:48

Guvera

28-Jul-08 18:48

Hi friends

How import print options in Report viewer? I am using Report viewer control in

my application. But the print image doesnt appear in my application. what wil i

do? I searched in msdn also. They give that to install Activex control. I cant

understood friends. Because without print image how can i print the page?

please give the solutions. Its very important me.

Hopes for ur's reply.

Thanks Smile | :)

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