C# - How To Communicate An Excel Workbook

Apr 22, 2010

Is there a way to load an Excel document in a web page and communicate with the excel control using code behind? (JavaScript or Asp.NET) ?

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Convert Excel Workbook Into Byte Array?

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I have datatable with records and i have existng Excel file in my application temp folder i want to export datatable records in this excel file workbook and i want to convert this excel workbook into byte array and i want to send this byte array in reponse.write to user to give download excel file option

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Databases :: Reading Data From An Excel Workbook (.xls)

Mar 1, 2011

I have a scenario where I have to read an excel file to dump records in a mysql database. The code generates an exception Sheet1 not found. I have pasted the code below. Please let me know the solution to the exception. I have given the correct read/write/modify settings to my excel file.

if (fileUpload1.PostedFile.FileName.EndsWith(".xls") || fileUpload1.PostedFile.FileName.EndsWith(".XLS"))
{
string fileName = Server.MapPath(fileUpload1.PostedFile.FileName);
string connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties=Excel 8.0";
// Create the connection object
OleDbConnection oledbConn = new OleDbConnection(connString);
try
{
// Open connection
oledbConn.Open();
// Create OleDbCommand object and select data from worksheet Sheet1
OleDbCommand cmd = new OleDbCommand("SELECT * FROM [Sheet1$]" , oledbConn);
// Create new OleDbDataAdapter
OleDbDataAdapter oleda = new OleDbDataAdapter();
oleda.SelectCommand = cmd;
// Create a DataSet which will hold the data extracted from the worksheet.
DataSet ds = new DataSet();
// Fill the DataSet from the data extracted from the worksheet.
oleda.Fill(ds, "RestaurantExcelData");
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
Response.Write("Data: " + ds.Tables[0].Rows[i].ItemArray[0].ToString() + "");
}
}
catch(Exception e1)
{
}
finally
{
// Close connection
oledbConn.Close();
}
}
else
{
Response.Write("File Not Excel (xls||XLS)");
}

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Databases :: Type Excel.worksheet And Workbook Not Defined

May 8, 2010

am new to vb.net programming. i am trying to read an existing excel 2007 file from vb.net i used a form with single button and i written code in button click event

Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlWorkSheet As Excel.Worksheet
xlApp = New Excel.ApplicationClass
xlWorkBook = xlApp.Workbooks.Open("C:Documents and SettingsUSERDesktopd0805
[code]...

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Databases :: How To Connect With Excel Workbook 2003 For Storing Data

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ADO.NET :: Accessing Data From Excel Workbook And Displaying It In Windows Form?

Feb 7, 2011

I am building an windows application using visual studio 2005. I want to retreive data from excel workbook and i want to display the retreived data in a drop down menu.

I have few question regarding this process.

1. How do we connect to excel using ADODB.Connection.

let me know following code snippet works or not.

Dim cn as ADODB.Connection
Set cn = New ADODB.Connection
With cn
.Provider = "Microsoft.Jet.OLEDB.4.0"
.ConnectionString = "Data Source=C:MyFolderMyWorkbook.xls;" & _
"Extended Properties=Excel 8.0;"
.Open
End With

2:How do we access and manupilate individual column from excel worksheet?

Since i am new to .Net environment i need detailed explanation about whole process.

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How A Website And A Web Application Communicate

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The design as I picture it is a server (holding an ASP.Net website, the back-end application and the database), the design may get more hybrid with time. The website is the interactive interface for the users, the website needs (sometimes) intensive calculations and queries which better be handled by the back-end application, then the application delivers the website the info to be wrapped and formatted as HTML markup to be returned the user eventually.

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Keep in mind that its out of the question that we can shift the whole application to SL. We must have to stick to asp.net 3.5 or 4

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Visual Studio :: Exporting A .rdlc To Excel / Analagous Export Of That Report To Excel?

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i use this code to export data into word.

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[Code]....

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