I'm trying to copy data from excel to sql server but facing the following error.
The Microsoft Office Access database engine could not find the object 'sheet1$'. Make sure the object exists and that you spell its name and the path name correctly.
My code is:
protected void importdatafromexcel(string filepath)
{
string sqltable = "PFDummyExcel";
string exceldataquery = "select EmployeeId,EmployeeName,Amount from [Sheet1$]";
string excelconnectionstring = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Extended Properties=Excel 12.0;Persist Security Info=False";
string sqlconnectionstring = System.Configuration.ConfigurationManager.ConnectionStrings["HRGold"].ConnectionString;
SqlConnection con = new SqlConnection(sqlconnectionstring);
OleDbConnection oledb = new OleDbConnection(excelconnectionstring);
OleDbCommand oledbcmd = new OleDbCommand(exceldataquery, oledb);
oledb.Open();
OleDbDataReader dr = oledbcmd.ExecuteReader();
SqlBulkCopy bulkcopy = new SqlBulkCopy(sqlconnectionstring);
bulkcopy.DestinationTableName = sqltable;
while (dr.Read())
{
bulkcopy.WriteToServer(dr);
}
oledb.Close();
}
Please tell me how i solve this..
This error is raised because of you are trying to access sheet (which name is sheet1) in excel file. By default first sheet name is "sheet1" but user have either rename this name or delete this sheet.
To resolved this issue first of all you have to get all sheet name from excel file, then you have to pass this sheet name in your above code to import data.
string filePath = "your file path";
string excelconnectionstring = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Extended Properties=Excel 12.0;Persist Security Info=False";
OleDbConnection Connection = new OleDbConnection(excelconnectionstring);
DataTable activityDataTable = Connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
if(activityDataTable != null)
{
//validate worksheet name.
var itemsOfWorksheet = new List<SelectListItem>();
string worksheetName;
for (int cnt = 0; cnt < activityDataTable.Rows.Count; cnt++)
{
worksheetName = activityDataTable.Rows[cnt]["TABLE_NAME"].ToString();
if (worksheetName.Contains('\''))
{
worksheetName = worksheetName.Replace('\'', ' ').Trim();
}
if (worksheetName.Trim().EndsWith("$"))
itemsOfWorksheet.Add(new SelectListItem { Text = worksheetName.TrimEnd('$'), Value = worksheetName });
}
}
// itemsOfWorksheet : all worksheet name is added in this
so you can use itemsOfWorksheet[0] as sheet name in-place of "sheet1"
I had similar issue, I sorted it out by
Saving the excel file from fileuploader to a temporary folder inside website folder.
Using path to that file in my connection string
Rest all was same and now the error: The Microsoft Office Access database engine could not find the object 'sheet1$' was gone.
Related
I am using a function in order to open an .xls file with multiple worksheets and copy the entire content into a .csv file.
Everything works just fine on my local machine: no exceptions, no errors etc.
But when I am running it on windows server 2012R I am getting an exception when the connection is opened.
Here is the code where I am trying to open an OleDB connection and then query through the file:
static void ConvertExcelToCsv(string excelFilePath, string csvOutputFile, int worksheetNumber)
{
// connection string
var cnnStr = String.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelFilePath + ";Extended Properties=\"Excel 8.0;HDR=no;Format=xls\"");
var cnn = new OleDbConnection(cnnStr);
// get schema, then data
var dt = new DataTable();
try
{
cnn.Open();
var schemaTable = cnn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
if (schemaTable.Rows.Count < worksheetNumber) throw new ArgumentException("The worksheet number provided cannot be found in the spreadsheet");
string worksheet = schemaTable.Rows[worksheetNumber - 1]["table_name"].ToString().Replace("'", "");
string sql = String.Format("select * from [{0}]", worksheet);
var da = new OleDbDataAdapter(sql, cnn);
da.Fill(dt);
....
The excelFilePath is my source excel file (.xls) and csvOutputFile is the file were the content is going to be passed to.
Does anyone has any ideas why I am getting this exception??
I need to check Excel files for a sheet containing a specific header in C#.
The sheet names, order and quantity are variable. I need to check all the sheets for the one containing a specific header and then store the name in a variable for later processing.
I can currently get all the sheet names but I am not able to check if it contains what I am looking for or not.
The goal is to get the sheet name and insert it in a SQL statement to process the file in a SSIS package.
This is the code I am currently using:
public void Main()
{
string excelFile;
string connectionString;
OleDbConnection excelConnection;
DataTable tablesInFile;
string[] excelTables = new string[5];
excelFile = Dts.Variables["User::var_MonitoringFile"].Value.ToString();
connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" +
"Data Source= "+ excelFile +
";Extended Properties=\"EXCEL 8.0;HDR=YES; IMEX=1;\"";
excelConnection = new OleDbConnection(connectionString);
excelConnection.Open();
tablesInFile = excelConnection.GetSchema("Tables");
DataRow tableInFile = tablesInFile.Rows[0];
Dts.Variables["User::var_ExcelSheet"].Value = tableInFile["TABLE_NAME"].ToString();
excelConnection.Close();
Dts.TaskResult = (int)ScriptResults.Success;
}
Here's my situation. I'm designing a program that takes Excel files (which may be in csv, xls, or xlsx format) from a remote network drive, processes the data, then outputs and stores the results of that process. The program provides a listbox of filenames that are obtained from the remote network drive folder using the method detailed in the accepted answer here. Once the user selects a filename from the listbox, I want the program to find the file and obtain the information from it to do the data processing. I have tried using this method to read the data from the Excel file while in a threaded security context, but that method just fails without giving any kind of error. It seems to not terminate. Am I going about this the wrong way?
Edit - (Final Notes: I have taken out the OleDbDataAdapter and replaced it with EPPlus handling.)
I was able to scrub sensitive data from the code, so here it is:
protected void GetFile(object principalObj)
{
if (principalObj == null)
{
throw new ArgumentNullException("principalObj");
}
IPrincipal principal = (IPrincipal)principalObj;
Thread.CurrentPrincipal = principal;
WindowsIdentity identity = principal.Identity as WindowsIdentity;
WindowsImpersonationContext impersonationContext = null;
if (identity != null)
{
impersonationContext = identity.Impersonate();
}
try
{
string fileName = string.Format("{0}\\" + Files.SelectedValue, #"RemoteDirectoryHere");
string connectionString = string.Format("Provider=Microsoft.ACE.OLEDB.14.0; data source={0}; Extended Properties=Excel 14.0;", fileName);
OleDbDataAdapter adapter = new OleDbDataAdapter("SELECT * FROM Sheet1", connectionString);
DataSet ds = new DataSet();
adapter.Fill(ds, "Sheet1");
dataTable = ds.Tables["Sheet1"];
}
finally
{
if (impersonationContext != null)
{
impersonationContext.Undo();
}
}
}
Additional Edit
Now xlsx files have been added to the mix.
Third Party
Third party solutions are not acceptable in this case (unless they allow unrestricted commercial use).
Attempts - (Final Notes: Ultimately I had to abandon OleDb connections.)
I have tried all of the different connection strings offered, and I have tried them with just one file type at a time. None of the connection strings worked with any of the file types.
Permissions
The User does have access to the file and its directory.
Your connection string might be the issue here. As far as I know, there isn't 1 that can read all xls, csv, and xlsx. I think you're using the XLSX connection string.
When I read xls, i use the following connection string:
#"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + sFilePath + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1;'"
Having said that, I recommend using a 3rd party file reader/parser to read XLS and CSV since, from my experience, OleDbDataAdapter is wonky depending on the types of data that's being read (and how mixed they are within each column).
For XLS, try NPOI https://code.google.com/p/npoi/
For CSV, try http://www.codeproject.com/Articles/9258/A-Fast-CSV-Reader
For XLSX, try EPPlus http://epplus.codeplex.com/
I've had great success with the above libraries.
Is it really important that you use an OleDb interface for this? I've always done it with Microsoft.Office.Excel.Interop, to wit:
using System;
using Microsoft.Office.Interop.Excel;
namespace StackOverflowExample
{
class Program
{
static void Main(string[] args)
{
var app = new Application();
var wkbk = app.Workbooks.Open(#"c:\data\foo.xls") as Workbook;
var wksht = wkbk.Sheets[1] as Worksheet; // not zero-based!
for (int row = 1; row <= 100; row++) // not zero-based!
{
Console.WriteLine("This is row #" + row.ToString());
for (int col = 1; col <= 100; col++)
{
Console.WriteLine("This is col #" + col.ToString());
var cell = wksht.Cells[row][col] as Range;
if (cell != null)
{
object val = cell.Value;
if (val != null)
{
Console.WriteLine("The value of the cell is " + val.ToString());
}
}
}
}
}
}
}
As you will be dealing with xlsx extension, you should rather opt for the new connection string.
public static string getConnectionString(string fileName, bool HDRValue, bool WriteExcel)
{
string hdrValue = HDRValue ? "YES" : "NO";
string writeExcel = WriteExcel ? string.Empty : "IMEX=1";
return "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + fileName + ";" + "Extended Properties=\"Excel 12.0 xml;HDR=" + hdrValue + ";" + writeExcel + "\"";
}
Above is the code for getting the connection string. First argument expects the actual path for file location. Second argument will decide whether to consider first row values as column headers or not. Third argument helps decide whether you want to open the connection to create and write the data or simply read the data. To read the data set it to "FALSE"
public static ReadData(string filePath, string sheetName, List<string> fieldsToRead, int startPoint, int endPoint)
{
DataTable dt = new DataTable();
try
{
string ConnectionString = ProcessFile.getConnectionString(filePath, false, false);
using (OleDbConnection cn = new OleDbConnection(ConnectionString))
{
cn.Open();
DataTable dbSchema = cn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
if (dbSchema == null || dbSchema.Rows.Count < 1)
{
throw new Exception("Error: Could not determine the name of the first worksheet.");
}
StringBuilder sb = new StringBuilder();
sb.Append("SELECT *");
sb.Append(" FROM [" + sheetName + fieldsToRead[0].ToUpper() + startPoint + ":" + fieldsToRead[1].ToUpper() + endPoint + "] ");
OleDbDataAdapter da = new OleDbDataAdapter(sb.ToString(), cn);
dt = new DataTable(sheetName);
da.Fill(dt);
if (dt.Rows.Count > 0)
{
foreach (DataRow row in dt.Rows)
{
string i = row[0].ToString();
}
}
cn.Dispose();
return fileDatas;
}
}
catch (Exception)
{
}
}
This is for reading 2007 Excel into dataset
DataSet ds = new DataSet();
try
{
string myConnStr = "";
myConnStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=MyDataSource;Extended Properties=\"Excel 12.0;HDR=YES\"";
OleDbConnection myConn = new OleDbConnection(myConnStr);
OleDbCommand cmd = new OleDbCommand("select * from [Sheet1$] ", myConn);
OleDbDataAdapter adapter = new OleDbDataAdapter();
adapter.SelectCommand = cmd;
myConn.Open();
adapter.Fill(ds);
myConn.Close();
}
catch
{ }
return ds;
I have met the error: Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done. I'm using SQL Server 2005 and Visual Studio 2005.
I met this error during the import of an excel filesheet to a table in my sql table. Below is my code:
#region Using directives
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.OleDb;
using System.Data.SqlClient;
using System.IO;
using System.Configuration;
#endregion Using directives
namespace CSASPNETExcelImportExport
{
public partial class ExcelImport : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
// Get the row counts in SQL Server table.
protected int GetRowCounts()
{
int iRowCount = 0;
using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Data Source=<IP>;Initial Catalog=SOD;Persist Security Info=True;User ID=<username>;Password=<password>"].ToString()))
{
SqlCommand cmd = new SqlCommand("select count(*) from <database>", conn);
conn.Open();
// Execute the SqlCommand and get the row counts.
iRowCount = (int)cmd.ExecuteScalar();
}
return iRowCount;
}
// Retrieve data from the Excel spreadsheet.
protected DataTable RetrieveData(string strConn)
{
DataTable dtExcel = new DataTable();
using (OleDbConnection conn = new OleDbConnection(strConn))
{
// Initialize an OleDbDataAdapter object.
OleDbDataAdapter da = new OleDbDataAdapter("select * from <database>", conn);
// Fill the DataTable with data from the Excel spreadsheet.
da.Fill(dtExcel);
}
return dtExcel;
}
// Import the data from DataTable to SQL Server via SqlBulkCopy
protected void SqlBulkCopyImport(DataTable dtExcel)
{
using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Data Source=<ip>;Initial Catalog=SOD;Persist Security Info=True;User ID=<username>;Password=<password>"].ToString()))
{
// Open the connection.
conn.Open();
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(conn))
{
// Specify the destination table name.
bulkCopy.DestinationTableName = "<database>";
foreach (DataColumn dc in dtExcel.Columns)
{
// Because the number of the test Excel columns is not
// equal to the number of table columns, we need to map
// columns.
bulkCopy.ColumnMappings.Add(dc.ColumnName, dc.ColumnName);
}
// Write from the source to the destination.
bulkCopy.WriteToServer(dtExcel);
}
}
}
protected void btnImport_Click(object sender, EventArgs e)
{
// Before attempting to import the file, verify
// that the FileUpload control contains a file.
if (fupExcel.HasFile)
{
// Get the name of the Excel spreadsheet to upload.
string strFileName = Server.HtmlEncode(fupExcel.FileName);
// Get the extension of the Excel spreadsheet.
string strExtension = Path.GetExtension(strFileName);
// Validate the file extension.
if (strExtension != ".xls" && strExtension != ".xlsx")
{
Response.Write("<script>alert('Please select a Excel spreadsheet to import!');</script>");
return;
}
// Generate the file name to save.
string strUploadFileName = "~/UploadFiles/" + DateTime.Now.ToString("yyyyMMddHHmmss") + strExtension;
// Save the Excel spreadsheet on server.
fupExcel.SaveAs(Server.MapPath(strUploadFileName));
// Generate the connection string for Excel file.
string strExcelConn = "";
// There is no column name In a Excel spreadsheet.
// So we specify "HDR=YES" in the connection string to use
// the values in the first row as column names.
if (strExtension == ".xls")
{
// Excel 97-2003
strExcelConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath(strUploadFileName) + ";Extended Properties=\"Excel 8.0;HDR=Yes;\"";
//if the above doesn't work, you may need to prefix OLEDB; to the string, e.g.
//strExcelConn = "OLEDB;Provider=Microsoft.Jet.OLEDB.4.0;Data Source=<URL>" + Server.MapPath(strUploadFileName) + ";Extended Properties=\"Excel 8.0;HDR=Yes;\"";
}
else
{
// Excel 2007
strExcelConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=<URL>" + Server.MapPath(strUploadFileName) + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES\"";
}
DataTable dtExcel = RetrieveData(strExcelConn);
// Get the row counts before importing.
int iStartCount = GetRowCounts();
// Import the data.
SqlBulkCopyImport(dtExcel);
// Get the row counts after importing.
int iEndCount = GetRowCounts();
// Display the number of imported rows.
lblMessages.Text = Convert.ToString(iEndCount - iStartCount) + " rows were imported into Person table";
if (rblArchive.SelectedValue == "No")
{
// Remove the uploaded Excel spreadsheet from server.
File.Delete(Server.MapPath(strUploadFileName));
}
}
}
}
}
Is it because my connectionstring error?
I have changed my connection strings as of what Nathan suggested. Now I met the following error:
http://i.stack.imgur.com/nWyte.png
What error is it this time? D:
It looks like you actually have several things wrong with your connection strings. For one thing, Excel connection strings should not include an "Initial Catalog", and they should include a Data Source referring to the file, not a server.
Try this instead:
// There is no column name In a Excel spreadsheet.
// So we specify "HDR=YES" in the connection string to use
// the values in the first row as column names.
if (strExtension == ".xls")
{
// Excel 97-2003
strExcelConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath(strUploadFileName) + ";Extended Properties=\"Excel 8.0;HDR=Yes;\"";
//if the above doesn't work, you may need to prefix OLEDB; to the string, e.g.
//strExcelConn = "OLEDB;Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath(strUploadFileName) + ";Extended Properties=\"Excel 8.0;HDR=Yes;\"";
}
else
{
// Excel 2007
strExcelConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + Server.MapPath(strUploadFileName) + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES\"";
}
Fyi, http://connectionstrings.com is a good resource for these kind of things.
Try removing "Persist Security Info=True" from your connection strings.
http://support.microsoft.com/kb/269495
I am trying to import a .csv file into my database. I am able to import an excel worksheet into my database, however due to different file format as .csv as from .xls, I need to make an import function specially for .csv.
Below is my code:
protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
// Get the name of the Excel spreadsheet to upload.
string strFileName = Server.HtmlEncode(FileUpload1.FileName);
// Get the extension of the Excel spreadsheet.
string strExtension = Path.GetExtension(strFileName);
// Validate the file extension.
if (strExtension != ".xls" && strExtension != ".xlsx" && strExtension != ".csv" && strExtension != ".csv")
{
Response.Write("<script>alert('Failed to import DEM Conflicting Role Datasheet. Cause: Invalid Excel file.');</script>");
return;
}
// Generate the file name to save.
string strUploadFileName = #"C:\Documents and Settings\rhlim\My Documents\Visual Studio 2005\WebSites\SoD\UploadFiles\" + DateTime.Now.ToString("yyyyMMddHHmmss") + strExtension;
// Save the Excel spreadsheet on server.
FileUpload1.SaveAs(strUploadFileName);
// Create Connection to Excel Workbook
string connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + strUploadFileName + ";Extended Properties=Text;";
using (OleDbConnection ExcelConnection = new OleDbConnection(connStr)){
OleDbCommand ExcelCommand = new OleDbCommand("SELECT [columns] FROM +userrolelist", ExcelConnection);
OleDbDataAdapter ExcelAdapter = new OleDbDataAdapter(ExcelCommand);
ExcelConnection.Open();
using (DbDataReader dr = ExcelCommand.ExecuteReader())
{
// SQL Server Connection String
string sqlConnectionString = "Data Source=<IP>;Initial Catalog=<DB>;User ID=<userid>;Password=<password>";
// Bulk Copy to SQL Server
using (SqlBulkCopy bulkCopy =
new SqlBulkCopy(sqlConnectionString))
{
bulkCopy.DestinationTableName = "DEMUserRoles";
bulkCopy.WriteToServer(dr);
Response.Write("<script>alert('DEM User Data imported');</script>");
}
}
}
}
else Response.Write("<script>alert('Failed to import DEM User Roles Data. Cause: No file found.');</script>");
}
The file has been successfully saved, but the error says that the path for the file is not valid, even though the file has been successfully saved as .csv, therefore I am not able to continue with the process of importing the data into my database.
Below are the screenshots of my error:
In conclusion I am having the error that the file path which the csv file is saved is not valid, although the csv file is successfully saved. Need some help from experienced. Thank You
If you're reading a CSV file, your connection string should specify the directory containing your CSV file.
string connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +
Path.GetDirectoryName(strUploadFileName);
You then use the filename in your SELECT statement:
"SELECT * FROM [" + Path.GetFileName(strUploadFileName) + "]"
I think you have this problem because you use "/" instead of "\"
Try to modify the path C:\.....
You need to use the backward slashes(\) on the file path.
string strUploadFileName = #"C:\Documents and Settings\rhlim\My Documents\Visual Studio 2005\WebSites\SoD\UploadFiles\" + DateTime.Now.ToString("yyyyMMddHHmmss") + strExtension;
EDIT 1: I believe FileUpload1.SaveAs converts the / to \ internally to identify the correct location.
EDIT 2: Its the problem with your connectionstring, even though you are using .csv format, you need to set Excel 8.0 or Excel 12.0 Xml as the Extended Properties
Here is the sample:
string connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + strUploadFileName + ";Extended Properties=Excel 12.0 Xml;";
For other types, check the code of OLEDB section of my article.
To avoid the connection open you can use like
// Read the CSV file name & file path
// I am usisg here Kendo UI Uploader
string path = "";
string filenamee = "";
if (files != null)
{
foreach (var file in files)
{
var fileName = Path.GetFileName(file.FileName);
path = Path.GetFullPath(file.FileName);
filenamee = fileName;
}
// Read the CSV file data
StreamReader sr = new StreamReader(path);
string line = sr.ReadLine();
string[] value = line.Split(',');
DataTable dt = new DataTable();
DataRow row;
foreach (string dc in value)
{
dt.Columns.Add(new DataColumn(dc));
}
while (!sr.EndOfStream)
{
value = sr.ReadLine().Split(',');
if (value.Length == dt.Columns.Count)
{
row = dt.NewRow();
row.ItemArray = value;
dt.Rows.Add(row);
}
}
For more help you can also See This Link