Inserting Excel Contents into dataset

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Hi friends,
I am trying to upload excel file and adding excel content into dataset. have tried following solution but it gives me error:"External table is not in the expected format.". please help me.

C#

string Extension = "";
      string FileName = "";
      string fileExtension = "";
      string fileLocation = "";

      if (FuplAssetPath.HasFile)
      {
          FileName = FuplAssetPath.FileName;
          Directory.CreateDirectory(Server.MapPath(".") + "/UploadedCSV/");
          FuplAssetPath.PostedFile.SaveAs(Server.MapPath(".") + "/UploadedCSV/" + FileName);

          FileName = Path.GetFileName(FuplAssetPath.PostedFile.FileName);
          fileExtension = Path.GetExtension(FuplAssetPath.PostedFile.FileName);
          fileLocation = Server.MapPath("UploadedExcel/" + FileName);
          FuplAssetPath.SaveAs(fileLocation);




          DataSet ds = new DataSet();


          string SourceConstr = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source='"+fileLocation+"';Extended Properties= 'Excel 12.0;HDR=Yes;IMEX=1'";

          OleDbConnection con = new OleDbConnection(SourceConstr);

          string query = "Select * from [e_1_2_3]";

          OleDbDataAdapter data = new OleDbDataAdapter(query, con);

          data.Fill(ds);

Posted 13-Aug-12 1:31am

Vaishali P. Patil

Updated 13-Aug-12 1:32am

Kenneth Haugland

v2

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Kenneth Haugland 13-Aug-12 7:33am

DO you have the correct excel string in your connection string?

Vaishali P. Patil 13-Aug-12 7:37am

string SourceConstr = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source='"+fileLocation+"';Extended Properties= 'Excel 12.0;HDR=Yes;IMEX=1'";

in this i am using fileLocation is for where my file is stored

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Vani Kulkarni · Answer 1 · 2012-08-13T02:01:00

Solution 1

See if below link helps you:
excel-external-table-is-not-in-the-expected-format[^]

Posted 13-Aug-12 2:01am

Vani Kulkarni

Vaishali P. Patil · Answer 2 · 2012-08-14T03:00:00

I added exceldatareader.dll. i download it from
http://exceldatareader.codeplex.com/releases/view/31934[^]

protected void lnkDispaly_Click(object sender, EventArgs e)
{
string Extension = "";
string FileName = "";
string fileExtension = "";
string fileLocation = "";

if (FuplAssetPath.HasFile)
{
FileName = FuplAssetPath.FileName;
Directory.CreateDirectory(Server.MapPath(".") + "/UploadedExcel/");
FuplAssetPath.PostedFile.SaveAs(Server.MapPath(".") + "/UploadedExcel/" + FileName);

FileName = Path.GetFileName(FuplAssetPath.PostedFile.FileName);
fileExtension = Path.GetExtension(FuplAssetPath.PostedFile.FileName);
fileLocation = Server.MapPath("UploadedExcel/" + FileName);
FuplAssetPath.SaveAs(fileLocation);

//GetExcelSheets(fileLocation, fileExtension, "Yes");

///////////////............
FileStream oStream;

oStream = new FileStream(fileLocation, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read);
IExcelDataReader iExcelDataReader = null;
FileInfo fileInfo = new FileInfo(FuplAssetPath.PostedFile.FileName);
string file = fileInfo.Name;
//if (file.Split('.')[1].Equals("xls"))
//{
iExcelDataReader = ExcelReaderFactory.CreateBinaryReader(oStream);

iExcelDataReader.IsFirstRowAsColumnNames = true;
DataSet dsUnUpdated = new DataSet();
dsUnUpdated = iExcelDataReader.AsDataSet();
}
}

Kuthuparakkal · Answer 3 · 2012-08-14T03:13:00

1. Build a universal ConnString method:

C#

public string GetConnectionString(string FileNamePath, bool HasHeader)
        {
            string ConnectionString = "";
            string Extension = Path.GetExtension(FileNamePath).ToLower();

            string BinaryExcelProvider = "Microsoft.Jet.OLEDB.4.0";
            string XmlExcelProvider = "Microsoft.ACE.OLEDB.12.0";
            string BinaryExcelExtProperties = "Excel 8.0";
            string XmlExcelExtProperties = "Excel 12.0";
            string XmlMacroExcelExtProperties = "EXCEL 12.0 Macro";

            string Provider = "";
            string ExtendedProperties = "";

            switch (Extension)
            {
                case ".xls":
                    Provider = BinaryExcelProvider;
                    ExtendedProperties = BinaryExcelExtProperties;
                    break;

                case ".xlsx":
                    Provider = XmlExcelProvider;
                    ExtendedProperties = XmlExcelExtProperties;
                    break;

                case ".xlsm":
                    Provider = XmlExcelProvider;
                    ExtendedProperties = XmlMacroExcelExtProperties;
                    break;
            }

            string Header = ";HDR=NO";
            if (HasHeader)
                Header = ";HDR=YES";
            string ConnectionStringFormat = "Provider={0};Data Source={1};Extended Properties=\"{2}{3}\";";

            ConnectionString = string.Format(ConnectionStringFormat, Provider, FileNamePath, ExtendedProperties, Header);
            return ConnectionString;
        }

2. Create DataSets

C#

  private DataSet GetDataSet(string excelFile, string WorkSheet, out bool Success)
        {
            Success = false;
            System.Data.DataSet excelDataSet = new DataSet();
            string connectionString = this.GetConnectionString(excelFile, true);


            using (OleDbConnection objConn = new System.Data.OleDb.OleDbConnection(connectionString))
            {
                try
                {
                    objConn.Open();
                    OleDbDataAdapter cmd = new OleDbDataAdapter("select * from " + WorkSheet, objConn);
                    cmd.Fill(excelDataSet, WorkSheet);
                    cmd.Dispose();
                }
                catch { }
                finally
                {
                    if (objConn != null)
                    {
                        objConn.Close();
                        objConn.Dispose();
                    }

                }
            }
return excelDataSet;
}

Inserting Excel Contents into dataset

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