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IErrorInfo.GetDescription failed with E_FAIL(0x80004005) in asp.net c#?

I am trying to read an excel file and convert the contents of the file to a datatable but I keep getting this exception IErrorInfo.GetDescription failed with E_FAIL(0x80004005) pointing at a specific line POCCommand.Fill(dt);This is what I tried so far. What could I be doing wrong ?
string POCpath = #"p.xlsx";
string POCConnection = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + POCpath + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=1\";";
OleDbConnection POCcon = new OleDbConnection(POCConnection);
OleDbCommand POCcommand = new OleDbCommand();
DataTable dt = new DataTable();
OleDbDataAdapter POCCommand = new OleDbDataAdapter("select * from [Sheet1$] ", POCcon);
POCCommand.Fill(dt);
Console.WriteLine(dt.Rows.Count);

First, since you're using .NET, you need to wrap anything that inherits or implements from IDisposable into a using statement.
such as:
using (OleDbConnection connection = new OleDbConnection("connectionstring")){
//Do stuff here
}
Second:
Please refer to this great answer by MethodMan on this SO Answer.
It has everything you will need to know. He does both OleDb connections and a TextFieldParser which will be faster and less expensive.

xlsx file upload not working correctly - works when file is open but not when closed

I've been doing research on this problem for about a day and a half and haven't found a solution to my problem yet. This is my scenario:
I have a AsyncFileUpload and a button which is configured to accept only xls and xlsx files (Excel) file. This file that is uploaded is used to import information into a gridview. The old format xls files works fine. The problem comes when I want to upload the xlsx file. I've tested multiple scenarios and I have found that it works perfectly when the xlsx file is currectly/actively open. When it is closed it gives me errors. I have fiddled and explored solutions to this problem and the range of errors I have received is quite large. But the most prominent errors where the following:
1. External table is not in the expected format.
2. could-not-find-installable-isam
I have found an article relating to the second error (Could not find installable ISAM) but I haven't tried all the suggested solutions yet because I would rather avoid making changes to the windows registry because I do not have exstensive knowledge regarding this matter.
I'm attaching the code that I use to make the connection between the OleDb and the excel file:
protected void AsyncUpload_UploadedComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
{
string connString = "";
string strFileType = Path.GetExtension(e.FileName).ToLower();
string path = e.FileName;
////Connection String to Excel Workbook
if (strFileType.Trim() == ".xls")
{
connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
}
else if (strFileType.Trim() == ".xlsx")
{
connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 12.0;HDR=Yes;IMEX=1";
}
string query = "SELECT * FROM [sheet1$]";
OleDbConnection conn = new OleDbConnection(connString);
if (conn.State == ConnectionState.Closed)
conn.Open();
OleDbCommand cmd = new OleDbCommand(query, conn);
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
using (OleDbDataReader dr = cmd.ExecuteReader())
{
_InsertWrapper.clearLists();
while (dr.Read())
{
var row1Col0 = dr[0];
Console.WriteLine(row1Col0);
_InsertWrapper.GenerateList(dr);
}
}
da.Dispose();
conn.Close();
conn.Dispose();
InventoryGrid.DataBind();
ErrorsGrid.DataBind();
}
If someone has additional knowledge or an explanation that can contribute please add it so that more people that are struggling with the same type of problem can gain as much information from this question as possible.We are all still learning.
So, main idea: Need to find a solution to successfully upload the xlsx file

Try using third party tools. They work efficiently:
http://code.google.com/p/excellibrary/

Updating data in to a Excel sheet using c#

I am trying to update some data in an Excel sheet of the format "xlsx" using OLEDB connection, but I am unable to make out the connection establishment.
Here is my code:
String sConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source='" + "D:\abc1.xlsx" + "';Extended Properties='Excel 8.0;HDR=Yes'";
OleDbConnection con = new OleDbConnection(sConnectionString);
con.Open();
OleDbCommand com = new OleDbCommand("select * from Sheet1",con);
OleDbDataReader reader = null;
reader = com.ExecuteReader();
while (reader.Read())
{
Console.WriteLine(reader[0]);
}
con.Open();
Console.ReadLine();
}
When I run the code, I'm facing the following exception:
The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local
machine.
Any idea how to recover from this exception or any other suggestions from which i can update my data in excel is advisable.

This could be the provider you have stated try changing it to the one which matches the Excel version on your machine
Try
Provider=Microsoft.ACE.OLEDB.12.0;Data Source='D:\abc1.xlsx';Extended Properties="Excel 12.0 Xml;HDR=YES";
Instead
Could also be that excel isnt installed
Also check that you have referenced the OLEDB library for your project

Change your PlatformTarget Type from AnyCPU to X86.
Steps:
Goto Project Properties.
Select Build tab.
Select X86 from PlatformTarget options.

It is possible that there are multiple reasons for this exception.
1) You could use the OleDbEnumerator class to find out what providers are available.
Accordingly you set your connection string.
2) Before that just try out below connection string.
String sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source='" + "D:\abc1.xlsx" + "';Extended Properties='Excel 8.0;HDR=Yes'";
3) If you have a 64 bit OS, there is no 64-bit version of the JET provider available and there's no alternative. As long as you want to support JET, you'll need to set the build target to x86.

first save as your excel workbook as Excel 97-2003 Workbook
It will work in my project...
string filepath = Server.MapPath("~/ImportData/") + fileUpload.FileName;
OleDbConnection oconn = new OleDbConnection
(#"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";
Extended Properties=Excel 8.0");`
oconn.Open();
OleDbDataAdapter adp = new OleDbDataAdapter("select * from Sheet1", oconn);
DataSet ds = new DataSet();
adp.Fill(ds);
oconn.Close();`

OleDBConnection Connection string

When I try this code OleDBConnection.open() not work and didn't throw any error, just open windows form and say anything I see messageBox try1 but program didn't show try2 what is the wrong in my connection string please help I've tried also excel 12.0 but it looks in reference Excel 14.0 in References (Microsoft Excel 14.0 Object Library) and the file is exist in c:\product.xlsx
OleDbConnection conn_exel = new OleDbConnection(#"provider=Microsoft.Jet.OLEDB.12.0; Data Source=C:\product.xlsx; Extended Properties=""Excel 14.0;HDR=Yes;""");
conn_exel.Open();
MessageBox.Show("try2");
OleDbCommand command_exel = new OleDbCommand(#"SELECT * FROM [Sayfa1$] WHERE id = 1",conn_exel);
OleDbDataReader reader_exel = command_exel.ExecuteReader();
MessageBox.Show("try3");
while (reader_exel.Read())
{
MessageBox.Show(reader_exel.GetString(1));
}
conn_exel.Close();

Try like this
Provider=Microsoft.ACE.OLEDB.12.0;Data Source=c:\myFolder\myExcel2007file.xlsx;
Extended Properties="Excel 12.0 Xml;HDR=YES";
"HDR=Yes;" indicates that the first row contains columnnames, not data. "HDR=No;" indicates the opposite.
reference

Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + PathNam + ";
Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"
http://www.nullskull.com/q/10173180/hello-would-you-explain-imex-option-when-import-excel.aspx
for IMEX usage

Read Excel using c# .net Issue

I read data from excel sheet using C#.
Here is my code and it is working.
var fileName = #"C:\Users\yohan\Desktop\Brandix\y.xlsx";
var connectionString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0; data source= {0}; Extended Properties=Excel 12.0;", fileName);
var adapter = new OleDbDataAdapter("SELECT * FROM [BOM$]", connectionString);
var ds = new DataSet();
adapter.Fill(ds);
DataTable data = ds.Tables[0];
But it always skip the top row of the excel sheet why is that ?
Please help ...!!
Thank You
yohan

That is the normal behaviour of the DataAdapter. The top row is considered as an Header Row or a "Column Name" Row.
To change this behaviour add to the Extended Properties of your connection string the property "HDR=NO"
Example:
var fileName = #"C:\Users\yohan\Desktop\Brandix\y.xlsx";
var connectionString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0; data source={0}; Extended Properties=""Excel 12.0;HDR=NO;""", fileName);
var adapter = new OleDbDataAdapter("SELECT * FROM [BOM$]", connectionString);
var ds = new DataSet();
adapter.Fill(ds);
DataTable data = ds.Tables[0];

Try adding HDR=NO to the extended properties.
see this link for details

Try changing your connection string to ...
"Provider=Microsoft.ACE.OLEDB.12.0; data source={0}; Extended Properties=\"Excel 12.0;HDR:No\""
See this page for more possible connection strings to try. The HDR setting determines wether the provider considers the top row to be column names.

Recommended way to read an Excel file in Server side app is Open XML.
You can try installing ACE component but still it remains un-recommended and unsupported.
For using Open XML you can go through below links which will help you using Open XML in your code for reading excel files -
Link1
Link2
Link3