I am Importing Data in Student Record from excel sheet with .xls as it's file extension when i am calling the function to upload Excel that is
public ActionResult Importexcel()
{
if (Request.Files["FileUpload1"].ContentLength > 0)
{
string extension = System.IO.Path.GetExtension(Request.Files["FileUpload1"].FileName);
string path1 = string.Format("{0}/{1}", Server.MapPath("~/Content/UploadedFolder"), Request.Files["FileUpload1"].FileName);
if (System.IO.File.Exists(path1))
System.IO.File.Delete(path1);
Request.Files["FileUpload1"].SaveAs(path1);
string sqlConnectionString = #"Data Source=(LocalDb)\v11.0;AttachDbFilename=|DataDirectory|\aspnet-UserInfo-20140318063343.mdf;Initial Catalog=aspnet-UserInfo-20140318063343;Integrated Security=True";
//Create connection string to Excel work book
string excelConnectionString = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path1 + ";Extended Properties=Excel 12.0;Persist Security Info=False";
//Create Connection to Excel work book
OleDbConnection excelConnection = new OleDbConnection(excelConnectionString);
//Create OleDbCommand to fetch data from Excel
OleDbCommand cmd = new OleDbCommand("Select [Id],[Name],[StudentId] from [Sheet1$]", excelConnection);
excelConnection.Open();
OleDbDataReader dReader;
dReader = cmd.ExecuteReader();
SqlBulkCopy sqlBulk = new SqlBulkCopy(sqlConnectionString);
//Give your Destination table name
sqlBulk.DestinationTableName = "StudentRecords";
sqlBulk.WriteToServer(dReader);
excelConnection.Close();
// SQL Server Connection String
}
return RedirectToAction("Import");
}
I am getting the following Error
Invalid cast from 'System.String' to 'System.Guid'.
My model is below and i cant change Guid as it is necessary need of mine
public class StudentRecord
{
public long Id { get; set; }
public string Name { get; set; }
public Guid StudentId { get; set; }
}
studentRecord.Guid = new Guid("Mystring");
Maybe, you have to itarate trough the objects what sou got from db, and parse on by one for reach the statement above.
You could also look at using a TypeConverter.
Parse string to system Guid as below. it may help you
System.Guid.Parse(yourStringVariable);
Related
returning a workbook via an httpresponse in a get call, the method used for an older version of ClosedXML, now returns an empty workbook - workbook tabs are created and correctly named, but are empty.
Sample code - trimmed down for basic response
public HttpResponseMessage Get([FromUri]ControlReportsView model)
{
string client = "EU";
ClosedXML.Excel.XLWorkbook workbook = CreateWorkbook(model, client);
MemoryStream stream = new MemoryStream();
workbook.SaveAs(stream);
stream.Position = 0;
var response = Request.CreateResponse(HttpStatusCode.OK);
response.Content = new StreamContent(stream);
response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");
response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
response.Content.Headers.ContentDisposition.FileName = string.Format("{0}_{1:yyyyMMdd hhmmtt} to {2:yyyyMMdd hhmmtt}.xlsx", model.Type.ToString(), model.StartDate, model.EndDate);
response.Headers.CacheControl = new CacheControlHeaderValue()
{
Private = true,
MaxAge = TimeSpan.FromSeconds(300)
};
return response;
}
private static ClosedXML.Excel.XLWorkbook CreateWorkbook(ControlReportsView model, string client)
{
using (var workbook = new ClosedXML.Excel.XLWorkbook())
{
CreateTestTab(model, client, workbook);
return workbook;
}
}
private static void CreateTestTab(ControlReportsView model, string client, XLWorkbook workbook)
{
var worksheet = workbook.Worksheets.Add("Sample Sheet");
var firstRow = worksheet.FirstRow();
firstRow.Cell("A").Value = "Hello World!";
}
public class ControlReportsView
{
public enum ControlReportType
{
[Description("R")]
Inbound,
[Description("S")]
Outbound
}
public ControlReportType Type { get; set; }
public DateTime StartDate { get; set; }
public DateTime EndDate { get; set; }
}
I suspect there's a more elegant tool to do the response now, of which I'm unaware.
I have another file I'm returning successfully via another method, but I'm loath to make this big a change to the set up of the current file:
var stream = new MemoryStream();
workbook.SaveAs(stream);
byte[] fileArray = stream.ToArray();
//build file name
DashObject FarmInfo = (DashObject)MySession.Info;
string ProjName = FarmInfo.ProjectName;
string datemade = DateTime.Now.ToString("yyyyMMdd-HHmmss");
string docName = String.Format("Subscribers_{0}_{1}.xlsx", ProjName, datemade);
Response.ContentType = "application/octet-stream";
string attachVal = "attachment; filename=" + docName;
Response.AppendHeader("Content-Disposition", attachVal);
Response.BinaryWrite(fileArray);
Response.End();
Wow, that was weird.
The data was never making it into the worksheets, even tho they were getting created.
Removing the Using clause somehow sorted it:
private static ClosedXML.Excel.XLWorkbook CreateWorkbook(ControlReportsView model, string client)
{
ClosedXML.Excel.XLWorkbook workbook = new ClosedXML.Excel.XLWorkbook();
CreateTestTab(model, client, workbook);
return workbook;
}
I suspect somehow the worksheet in the using didn't pass back and forth properly for some reason - can anyone confirm?
My code works perfect if folders are private
For example if the folder belong to private message store tcFolderId="00000000C29BEF8308F4AD4188BDF6CB1517D65401008AC18FCDFD1EF64FBB5D946C26787598000000BC70750000"
Public Function mmks_ConvertMAPIFolderIdToEWSFolderId(tcFolderId As String, tcMailBox As String) As String
Dim loHexEntryID As New AlternateId(IdFormat.HexEntryId, tcFolderId, tcMailBox)
Dim loEntryId As AlternateId = _pmks_exchangeService.ConvertId(loHexEntryID, IdFormat.EntryId)
Return CType(_pmks_exchangeService.ConvertId(loEntryId, IdFormat.EwsId), AlternateId).UniqueId
End Function
But for public message store this code does not work.
When Public FolderId = "000000001A447390AA6611CD9BC800AA002FC45A0300D32A8E9A328D734A98B8E1E7D3C591F5012EE3EFFFB60000"
After conversion this code returns
"AAMkADkwZTlhMjA2LWQ1NTUtNDNkOS04N2M3LWYyZmFkZDFjMjlmNgAuAAAAAAAaRHOQqmYRzZvIAKoAL8RaAwDTKo6aMo1zSpi44efTxZH1AS7j7/+2AAA="
But this is wrong.
Because I rescan PublicFoldersRoot using FindFolders(WellKnownFolderName.PublicFoldersRoot) and this folder has UniqueId = "AQEuAAADGkRzkKpmEc2byACqAC/EWgMA0yqOmjKNc0qYuOHn08WR9QEu4+//tgAAAA=="
The questio is:
How to convert Public message store folder EntryID into EWS FolderId?
You need to use the AlternatePublicFolderId Class https://learn.microsoft.com/en-us/exchange/client-developer/web-service-reference/alternatepublicfolderid for public Folders eg
Public Function mmks_ConvertMAPIFolderIdToEWSFolderId(tcFolderId As String, tcMailBox As String) As String
Dim loHexEntryID As New AlternatePublicFolderId (IdFormat.HexEntryId, tcFolderId, tcMailBox)
Dim loEntryId As AlternatePublicFolderId = _pmks_exchangeService.ConvertId(loHexEntryID, IdFormat.EntryId)
Return CType(_pmks_exchangeService.ConvertId(loEntryId, IdFormat.EwsId), AlternatePublicFolderId).UniqueId
End Function
Hai I have to add details from one table to another which should be within to dates. These dates are read from text boxes.
But i'm getting Error:
"An exception of type 'MySql.Data.MySqlClient.MySqlException' occurred in MySql.Data.dll but was not handled in user code
Additional information: Incorrect datetime value: '11/25/2015 12:00:00 AM' for column 'debissuedate' at row 1"
The first table is t_bondridapp with fields : id,cancode,canname,debissuedate...etc
And I have to copy from this table to new one named as bondlocal with fields :
bondid,cancode,canname,bonddate.
I've used the code
public class DBConnection
{
private DBConnection()
{
}
private string dbname = string.Empty;
public string DBName
{
get { return dbname;}
set { dbname = value;}
}
public string Password { get; set; }
private MySqlConnection mycon = null;
public MySqlConnection Connection
{
get { return mycon; }
}
private static DBConnection _instance = null;
public static DBConnection Instance()
{
if(_instance==null)
_instance=new DBConnection();
return _instance;
}
public bool IsConnect()
{
bool result = true;
if(mycon==null)
{
if (String.IsNullOrEmpty(dbname))
result = false;
string constr = string.Format("server=localhost;user id=root;password=mysql;database=pnys;",dbname);
mycon = new MySqlConnection(constr);
mycon.Open();
result = true;
}
return result;
}
public void Close()
{
mycon.Close();
}
}
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click1(object sender, EventArgs e)
{
MySqlDateTime fdate =new MySqlDateTime(DateTime.Parse(TextBox3.Text));
MySqlDateTime sdate = new MySqlDateTime(DateTime.Parse(TextBox4.Text));
var dbCon = DBConnection.Instance();
dbCon.DBName = "pnys";
if (dbCon.IsConnect())
{
string query = "INSERT INTO bondlocal (cancode,canname,bonddate) SELECT t_bondridapp.cancode,t_bondridapp.canname,t_bondridapp.debissuedate FROM t_bondridapp WHERE debissuedate>='" + fdate + "'AND debissuedate<='" + sdate + "'";
MySqlCommand cmd = new MySqlCommand(query, dbCon.Connection);
cmd.ExecuteNonQuery();
}
Server.Transfer("ReportBonds.aspx");
}
Pls Help Me...
Basically, the problem is how you're passing parameters into the database. You shouldn't need to create a MySqlDateTime yourself - just use parameterized SQL and it should be fine:
// TODO: Use a date/time control instead of parsing text to start with
DateTime fdate = DateTime.Parse(TextBox3.Text);
DateTime sdate = DateTime.Parse(TextBox4.Text);
string query = #"INSERT INTO bondlocal (cancode,canname,bonddate)
SELECT t_bondridapp.cancode,t_bondridapp.canname,t_bondridapp.debissuedate
FROM t_bondridapp
WHERE debissuedate >= #fdate AND debissuedate <= #sdate";
using (var command = new MySqlCommand(query, dbCon))
{
command.Parameters.Add("#fdate", MySqlDbType.Datetime).Value = fdate;
command.Parameters.Add("#sdate", MySqlDbType.Datetime).Value = sdate;
command.ExecuteNonQuery();
}
Basically, you should never specific values within SQL by just using string concatenation. Parameterized SQL prevents SQL injection attacks and conversion issues, and improves code readability.
(As an aside, I would urge you to ditch your current connection sharing, and instead always create and open a new MySqlDbConnection and dispose of it at the end of your operation - rely on the connection pool to make it efficient.)
I'm trying to read the following json in a windows phone app using newtonsoft.json
I can't read anything. the also looks pretty strange to me.
{"type": "Menu","menu":
[{"0":"antipasto","tipo_piatto":"antipasto","1":"porchetta","nome_piatto":"porchetta","2":"1","prezzo":"1"},
{"0":"primo","tipo_piatto":"primo","1":"matriciana","nome_piatto":"matriciana","2":"5","prezzo":"5"},
{"0":"secondo","tipo_piatto":"secondo","1":"salsicce","nome_piatto":"salsicce","2":"4","prezzo":"4"},
{"0":"contorno","tipo_piatto":"contorno","1":"patate","nome_piatto":"patate","2":"2","prezzo":"2"},
{"0":"dolce","tipo_piatto":"dolce","1":"gelato","nome_piatto":"gelato","2":"6","prezzo":"6"}]}
this is my c# code for now
public class piatto_menu_giorno
{
public string tipo_piatto { get; set; }
public string nome_piatto { get; set; }
public string prezzo { get; set; }
}
public menu()
{
InitializeComponent();
WebClient webClient = new WebClient();
Uri uri = new Uri("http://www.stepapp.it/areacli/extDevice/getMenuOdierno_101.php");
webClient.OpenReadCompleted += new OpenReadCompletedEventHandler(fine_lettura_web);
webClient.OpenReadAsync(uri);
}
private void fine_lettura_web(object sender, OpenReadCompletedEventArgs e)
{
DataContractJsonSerializer json = null;
json = new DataContractJsonSerializer(typeof(ObservableCollection<piatto_menu_giorno>));
ObservableCollection<piatto_menu_giorno> menu = json.ReadObject(e.Result) as ObservableCollection<piatto_menu_giorno>;
if(menu==null)
menu_giorno.Text = "null";
else
foreach (piatto_menu_giorno piatto in menu)
{
menu_giorno.Text += piatto.nome_piatto + "\n";
}
}
sorry for all the variables name that are in italian
I am writing a code for you it will help you to deserialize the object from json to yourClassCustomObject.
private async Task<List<piatto_menu_giorno>> MyDeserializerFunAsync()
{
List<piatto_menu_giorno> book = new List<piatto_menu_giorno>();
try
{
//I am taking my url from appsettings. myKey is my appsetting key. You can write direct your url.
string url = (string)appSettings["mykey"];
var request = HttpWebRequest.Create(url) as HttpWebRequest;
request.Accept = "application/json;odata=verbose";
var factory = new TaskFactory();
var task = factory.FromAsync<WebResponse>(request.BeginGetResponse,request.EndGetResponse, null);
var response = await task;
Stream responseStream = response.GetResponseStream();
string data;
using (var reader = new System.IO.StreamReader(responseStream))
{
data = reader.ReadToEnd();
}
responseStream.Close();
DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(List<piatto_menu_giorno>));
MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(data));
book = (List<piatto_menu_giorno>)json.ReadObject(ms);
return book;
}
}
Above code is working in my wp8 application it is faster you can try, it will help you. I am performing asynchronous operation but you can create your simple method with piatto_menu_giorno return type.
I am using a function to import data from a access db into SQL server:
public string importDataFromAccess(string table, string fileName)
{
OleDbConnection OleDbConn = new OleDbConnection(String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0}", fileName));
try
{
string sSQLTable = table;
string myExcelDataQuery = "Select * from " + sSQLTable;
string sSqlConnectionString = connStr;
string sClearSQL = "DELETE FROM " + sSQLTable;
SqlConnection SqlConn = new SqlConnection(sSqlConnectionString);
SqlCommand SqlCmd = new SqlCommand(sClearSQL, SqlConn);
SqlConn.Open();
SqlCmd.ExecuteNonQuery();
SqlConn.Close();
OleDbCommand OleDbCmd = new OleDbCommand(myExcelDataQuery, OleDbConn);
OleDbConn.Open();
OleDbDataReader dr = OleDbCmd.ExecuteReader();
SqlBulkCopy bulkCopy = new SqlBulkCopy(sSqlConnectionString);
bulkCopy.DestinationTableName = sSQLTable;
while (dr.Read())
{
bulkCopy.WriteToServer(dr);
}
OleDbConn.Close();
return "Done";
}
catch (Exception ex)
{
OleDbConn.Close();
return ex.ToString();
}
}
I noticed it isnt importing the first record of each table, can anyone help notice why and how to fix? Hopefully it is only the first row...
You shouldn't need the
while (dr.Read())
{
bulkCopy.WriteToServer(dr);
}
And you just need to replace that with
bulkCopy.WriteToServer(dr);
The WriteToServer method
Copies all rows in the supplied IDataReader to a destination table
specified by the DestinationTableName property of the SqlBulkCopy
object.
But the dr.Read() that you have called has read the first line out of the Reader and advanced the IDataReader to the next record (so it is not accessible to the WriteServer method).