I am getting the following issue while importing the excel into database.

https://ibb.co/c4CL2H

An unhandled exception of type 'System.InvalidOperationException' occurred in System.Data.dll

Additional information: The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine.

 private void uploadUsingExcel()
        {
            int excelRows;

            OleDbConnection ExcelConnection;
            OleDbDataAdapter da;
            DataSet ds;

            string filename = txtUploadFlNm.Text.Trim();
            string fileExtension = filename.Substring(filename.Length - 4, 4);


            try
            {
                //string ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filename + ";Extended Properties=Excel 5.0";
                //ExcelConnection = new OleDbConnection(ConnectionString);


                string excelConnectionString=null;
                if (fileExtension == ".xls")
                {
                    excelConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filename + ";Extended Properties=Excel 5.0";
                }
                //connection String for xlsx file format.
                else if (fileExtension == "xlsx")
                {
                    excelConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" +
                    filename + ";Extended Properties=Excel 12.0";
                }

                ExcelConnection = new OleDbConnection(excelConnectionString);
              //  if (ExcelConnection.State == ConnectionState.Closed)
                //{
                //    ExcelConnection.Open();
                //}

                string ExcelQuery = "Select * from [Sheet1$] where [companyname] IS NOT NULL or [website] IS NOT NULL or [country] IS NOT NULL ";       // from Sheet1";                  

                ds = new DataSet();
                da = new OleDbDataAdapter(ExcelQuery, ExcelConnection);
                da.Fill(ds, "TEMP");

                DataTable tblWithBadEml = ds.Tables["TEMP"];

                DataTable cleanedEmailTbl = new DataTable();
                DataTable onlyBadEmailTbl = new DataTable();

                cleanedEmailTbl = ds.Tables["TEMP"].Clone();
                onlyBadEmailTbl = ds.Tables["TEMP"].Clone();


                Boolean email1Exist = tblWithBadEml.Columns.Contains("email1");
                Boolean email2Exist = tblWithBadEml.Columns.Contains("email2");

                string email1 = null;
                string email2 = null;
                int e1 = 0;
                int e2 = 0;

                for (int i = 0; i < tblWithBadEml.Rows.Count; i++)
                {
                   



                    string email = Convert.ToString(tblWithBadEml.Rows[i]["email"]).Trim();

                    if (email1Exist)
                    {
                        email1 = Convert.ToString(tblWithBadEml.Rows[i]["email1"]).Trim();
                        if (email1 != "")
                        {
                            e1++;
                        }
                    }
                    if (email2Exist)
                    {
                        email2 = Convert.ToString(tblWithBadEml.Rows[i]["email2"]).Trim();
                        if (email2 != "")
                        {
                            e2++;
                        }
                    }


                    if ((validEmail(email) == true) && (email1Exist && ((validEmail(email1) && email1 != "") || email1 == "")) && (email2Exist && ((validEmail(email2) && email2 != "") || email2 == "")))
                    {
                        DataRow dr = tblWithBadEml.Rows[i];
                        DataRow newRow = cleanedEmailTbl.NewRow();
                        newRow.ItemArray = dr.ItemArray;
                        cleanedEmailTbl.Rows.Add(newRow);
                    }
                    else
                    {
                        DataRow dr1 = tblWithBadEml.Rows[i];
                        DataRow newRow1 = onlyBadEmailTbl.NewRow();
                        newRow1.ItemArray = dr1.ItemArray;
                        onlyBadEmailTbl.Rows.Add(newRow1);

                    }
                }

                excelRows = Convert.ToInt32(cleanedEmailTbl.Rows.Count);
                int ExcelColumnCount = Convert.ToInt32(cleanedEmailTbl.Columns.Count);

                try
                {
                    
                    MyConnect myCnn = new MyConnect();  
                    String connString = myCnn.getConnect().ToString();    //call from class

                    SqlDataAdapter adapter;
                    SqlTransaction transaction;
                    DataSet ds1 = new DataSet();
                    SqlConnection conn=null;
                    conn = new SqlConnection(connString);
                    conn.Open();

                    transaction = conn.BeginTransaction();
                    SqlCommand command = new SqlCommand();
                    command.Transaction = transaction;

                    StringBuilder XML_TRANSACTIONDETAILS = new StringBuilder();

                    string guid = Guid.NewGuid().ToString().Replace("-", "");
                    string dataID;
                    string today = DateTime.Now.ToString();
                    int m = 1;


                    XML_TRANSACTIONDETAILS.Append("<master>");
                    for (int i = 0; i < excelRows; i++)
                    {
                        m = m + 1;
                        dataID = guid + "-" + today+m.ToString();

                        XML_TRANSACTIONDETAILS.Append("<TRANSACTION>");
                        XML_TRANSACTIONDETAILS.Append("<maxid>" + SecurityElement.Escape(dataID) + "</maxid>");

                        for (int j = 0; j < ExcelColumnCount; j++)
                        {
                            string xmlTag = cleanedEmailTbl.Columns[j].ToString();

                            XML_TRANSACTIONDETAILS.Append("<" + xmlTag + ">" + SecurityElement.Escape(cleanedEmailTbl.Rows[i][j].ToString().Trim()) + "</" + xmlTag + ">");
                        }

                        XML_TRANSACTIONDETAILS.Append("</TRANSACTION>");
                    }
                    XML_TRANSACTIONDETAILS.Append("</master>");


                    ExpoBusy.Visible = true;
                    ExpoBusy.Focus();
                    panel2.Visible = true;
                   // panel2.Enabled = true;
                    ExpoBusy.ForeColor = Color.Red;
                   // ExpoBuisy.Enabled = true;
                    panel1.Enabled = false;
                    this.Cursor = Cursors.WaitCursor;

                    SqlParameter prm = new SqlParameter("@XML_TRANSACTIONDETAILS", SqlDbType.NText);
                    SqlParameter prm1 = new SqlParameter("@status", cmbAllStatus.SelectedValue);
                    SqlParameter prm2 = new SqlParameter("@username", currentLoggedUserId);
                    SqlParameter prm3 = new SqlParameter("@urlorcatalog", tboxUrlCat.Text.Trim());
                    SqlParameter prm4 = new SqlParameter("@dataentrytype", cmbDataEntryType.Text.Trim());
                    SqlParameter prm5 = new SqlParameter("@exhibitor", txtExibitorList.Text.Trim());

                    prm.Value = XML_TRANSACTIONDETAILS.ToString();

                    try
                    {
                        command.Connection = conn;

                        command.CommandText = "InsertExcelUsingXmlExhibitorListNew";
                     
                        command.CommandType = CommandType.StoredProcedure;

                        command.Parameters.Add(prm);
                        command.Parameters.Add(prm1);
                        command.Parameters.Add(prm2);
                        command.Parameters.Add(prm3);
                        command.Parameters.Add(prm4);
                        command.Parameters.Add(prm5);

                        adapter = new SqlDataAdapter(command);
                        adapter.Fill(ds1, "rowsinserted");

                        transaction.Commit();

                        this.Cursor = Cursors.Default;
                        panel1.Enabled = true;
                       
                        ExpoBusy.Visible = false;

                      //  string duplicateemails = Convert.ToString(ds1.Tables["rowsinserted"].Rows[0][0]);
                        int duplicateemails = Convert.ToInt32(ds1.Tables["rowsinserted"].Rows[0][0]);
                        int totalemails=Convert.ToInt32(Convert.ToInt32(tblWithBadEml.Rows.Count)+(e1+e2));

                        DialogResult result;

                        if (onlyBadEmailTbl.Rows.Count == 0)
                        {
                            
                            int totalNewCompanies = totalemails - Convert.ToInt32(ds1.Tables["rowsinserted"].Rows[0][0]);
                            saveindatalog(totalemails, totalNewCompanies);
                            MessageBox.Show("Total Companies(emails):  " + totalemails + "\nNew Companies(emails): " + totalNewCompanies + "\nDuplicates :" + duplicateemails + "", "", MessageBoxButtons.OKCancel);
                        }
                        else
                        {
                            int totalNewCompanies =totalemails - Convert.ToInt32(ds1.Tables["rowsinserted"].Rows[0][0]) - Convert.ToInt32(onlyBadEmailTbl.Rows.Count);
                            saveindatalog(totalemails, totalNewCompanies);
                            int id = CustomMessageBox.ShowBox("Total Companies(emails):  " + totalemails + "\nDuplicates :" + duplicateemails + "\nBad Emails:  " + onlyBadEmailTbl.Rows.Count.ToString() + "\nclick view to save/view bad Email", "Expogroup");
                            
                            if (id==2)
                            {
                                ExportDTToExcel(onlyBadEmailTbl);
                            }
                        }
                        conn.Close();

                    }
                    catch (Exception ex1)
                    {
                        transaction.Rollback();
                        MessageBox.Show("Unable to add " + ex1.Message);
                    }

                    finally
                    {
                        if (conn.State == ConnectionState.Open)
                        {
                            conn.Close();
                        }
                        this.Cursor = Cursors.Default;
                        panel1.Enabled = true;

                        ExpoBusy.Visible = false;
                    }
                }
                catch (Exception)
                { }

            }
            finally
            {

            }
        }