it has been some days since I implemented in several PCs my Google Drive upload programme. It is developed in VB.NET console app and I can say it works out pretty good. Except that in some PCs it continues throwing the taskcanceled exception. Basically the programme works at night, where the internet traffic in the pcs should be likely to 0 and it continues trying to upload to a google folder until it succesfully do it OR the time (of an hour usually) runs out.
The Exception looks like this
Ex: System.AggregateException: One or more errors occured. ---> System.Threading.Tasks.TaskCanceledException: A task was canceled.
--- Fine della traccia dello stack dell'eccezione interna ---
in System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
in System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
in System.Threading.Tasks.Task`1.get_Result()
in Google.Apis.Upload.ResumableUpload.Upload() in C:\Apiary\2021-09-08.15-52-39\Src\Support\Google.Apis\Upload\ResumableUpload.cs:riga 388
in TeraDriveServ.Service1.UploadFile(String FilePath) in C:\Sviluppo\TeraDriveServ\Service1.vb:row 291
---> (Internal exception 0) System.Threading.Tasks.TaskCanceledException: A Task was canceled.<---
This is the code I use
Private Sub UploadFile(FilePath As String)
Dim pathDb As String = System.Configuration.ConfigurationManager.AppSettings("DB")
If Service.ApplicationName <> "Google Drive VB Dot Net" Then CreateService()
Dim mail As String = ""
Dim destinatari As String = ""
Dim TheFile As New Google.Apis.Drive.v2.Data.File()
Dim nome As String = Path.GetFileName(FilePath)
Dim infofile As New IO.FileInfo(FilePath)
' I get some data from the file
Dim dataultimaModifica As DateTime = infofile.LastWriteTime
Dim nomefileeffettivo As String = infofile.Name
Dim estensione = Path.GetExtension(FilePath)
'Getting the file folder
Dim folderId As String = System.Configuration.ConfigurationManager.AppSettings("CARTELLADRIVE")
TheFile.Parents = New List(Of ParentReference) From {New ParentReference() With {.Id = folderId}}
TheFile.Title = nome
TheFile.Description = ""
Dim esiste As Boolean = False
' A query to check if the file is uploaded
Using con As System.Data.SQLite.SQLiteConnection = New System.Data.SQLite.SQLiteConnection("data source=" & pathDb & "databaseFile.db3")
Using com As System.Data.SQLite.SQLiteCommand = New System.Data.SQLite.SQLiteCommand(con)
con.Open()
com.CommandText = "Select ID FROM CARICATI WHERE NOME = '" & nome & "' AND DATA='" & dataultimaModifica & "'"
Using reader As System.Data.SQLite.SQLiteDataReader = com.ExecuteReader()
While reader.Read()
esiste = True
End While
con.Close()
End Using
End Using
End Using
If esiste = True Then
' already loaded
Return
Else
Select Case estensione
Case ".bak"
TheFile.MimeType = "application/octet-stream"
Case ".zip"
TheFile.MimeType = "application/zip"
'Case ".jpeg", ".jpg"
' TheFile.MimeType = "image/ jpeg"
'Case ".txt"
' TheFile.MimeType = "text/plain"
'Case ".pdf"
' TheFile.MimeType = "application/pdf"
'Case ".xls"
' TheFile.MimeType = "application/ vnd.ms - excel"
'Case ".doc"
' TheFile.MimeType = "application/msword"
'Case ".docx"
' TheFile.MimeType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
'Case ".xlsx"
' TheFile.MimeType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
'Case ".odt"
' TheFile.MimeType = "application/ vnd.oasis.opendocument.text"
Case Else
' I dont like the file extension
Return
End Select
Dim fatto As Integer = 0
' I upload the file details in the DB
Using con As System.Data.SQLite.SQLiteConnection = New System.Data.SQLite.SQLiteConnection("data source=" & pathDb & "databaseFile.db3")
Using com As System.Data.SQLite.SQLiteCommand = New System.Data.SQLite.SQLiteCommand(con)
con.Open()
com.CommandText = "INSERT INTO CARICATI (NOME,DATA) VALUES('" & nome & "','" & dataultimaModifica & "') "
com.ExecuteNonQuery()
fatto = con.LastInsertRowId
' UPLOADED
con.Close()
End Using
End Using
End If
Try
Dim ByteArray As Byte() = System.IO.File.ReadAllBytes(FilePath)
Dim Stream As New System.IO.MemoryStream(ByteArray)
Dim UploadRequest As Google.Apis.Drive.v2.FilesResource.InsertMediaUpload = Service.Files.Insert(TheFile, Stream, TheFile.MimeType)
logger.Debug("Oggetto creato")
' UploadRequest.ContentStream.WriteTimeout = 600000
'If contaUp = 0 Then
' UploadRequest.Service.HttpClient.Timeout = Service.HttpClient.Timeout
'End If
'contaUp = 1
logger.Debug("Starting upload: " & DateTime.Now)
' Here is where the exception points at, the Google Upload() Method
UploadRequest.Upload()
logger.Debug("Upload completed: " & DateTime.Now)
Dim file As File = Nothing
file = UploadRequest.ResponseBody
If file Is Nothing Then
logger.Debug("Upload failed")
' deletes the data from db to try again
AnnulloCaricamento(nome, dataultimaModifica, pathDb)
Else
' I send some stuff to a server
logger.Debug("Cerco di fare POST")
Dim testoSucc As String = System.Configuration.ConfigurationManager.AppSettings("TESTOS")
POST(nomefileeffettivo, dataultimaModifica)
eseguito = True
End If
Catch ex As Exception
' deletes the data from db to try again
AnnulloCaricamento(nome, dataultimaModifica, pathDb) ''05/10/2021
End Try
End Sub
Thanks everyone
I am using the zip component to create a zip from memory and stream that file to download. It was working for a while, but in FireFox it won't let me download the file. Here is the code that I am using:
' NewZip initializes the zip object. It does not write
' the file. The "test.zip" file, in this case, will never be written.
success = zip.NewZip("lib-files.zip")
If (success <> True) Then
'MsgBox(zip.LastErrorText)
Exit Sub
End If
For Each oRow As Data.DataRow In oData.Tables(0).Rows
If System.IO.File.Exists(Application("LibUploadedDocumentPath") & oRow("DocFileName").ToString) = True Then
success = zip.AppendOneFileOrDir(Application("LibUploadedDocumentPath") & oRow("DocFileName").ToString, False)
Dim entry As Chilkat.ZipEntry
Dim fFile As FileInfo = New FileInfo(Application("LibUploadedDocumentPath") & oRow("DocFileName").ToString)
Dim sNewFileName As String = oRow("DocName").ToString
entry = zip.GetEntryByName(oRow("DocFileName").ToString)
If (entry Is Nothing) Then
MsgBox("Failed to find entry in .zip")
Exit Sub
End If
'Dim sTestName As String = ""
entry.FileName = sNewFileName & fFile.Extension.ToLower
Else
Response.Write("All the files are not found. Download aborted.")
Exit Sub
End If
Next
If (success <> True) Then
'MsgBox(zip.LastErrorText)
Exit Sub
End If
Dim Data As Byte()
Data = zip.WriteToMemory
Response.Clear()
Response.ContentType = "application/octet-stream"
Response.AddHeader("Content-Length", Data.Length.ToString())
Response.AddHeader("Content-Disposition",
"attachment; filename=""" & zip.FileName & """")
Response.BinaryWrite(Data)
Response.Flush()
Response.End()
In FireFox it says, "the source file cannot be saved, because the source file could not be read". I've tried it in Chrome, and it allows me to download there. Not sure if its the component that's being used, or something else I need to add. Any thoughts?
Maybe change the content type to "application/zip"?
Response.ContentType = "application/zip"
I am making an application in vb using UWP and epPlus along with it to save the current database to an excel file. I would create a pop up dialog box that will allow the client to select the directory they want to save the excel file to. There isn't a "Savefiledialog" in UWP... Ideas?
UPDATE
I tried to use FileSavePicker: if I save it in the principal directory (C:\, Desktop, Documents ...) epPlus doesn't work, but if I save it in another directory (D:\, USB...) it workes... How can I save it in the principal directory?
I post my code here:
Private Async Sub ButtonXls_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
OutputTextBlock.Text = ""
Dim savePicker As FileSavePicker = New FileSavePicker()
savePicker.SuggestedStartLocation = PickerLocationId.Desktop
savePicker.FileTypeChoices.Add("Microsoft Excel", New List(Of String)() From {
".xlsx"
})
savePicker.SuggestedFileName = "Riepilogo_Test"
Dim file As StorageFile = Await savePicker.PickSaveFileAsync()
If file IsNot Nothing Then
CachedFileManager.DeferUpdates(file)
Dim ExcelPkg As ExcelPackage = New ExcelPackage()
Dim wsSheet1 As ExcelWorksheet = ExcelPkg.Workbook.Worksheets.Add("Sheet1")
Using Rng As ExcelRange = wsSheet1.Cells(2, 2, 2, 2)
Rng.Value = "Text file on Excel here"
Rng.Style.Font.Size = 16
Rng.Style.Font.Bold = True
Rng.Style.Font.Italic = True
End Using
wsSheet1.Protection.IsProtected = False
wsSheet1.Protection.AllowSelectLockedCells = False
Dim filePath As FileInfo = New FileInfo(file.Path)
ExcelPkg.SaveAs(filePath)
Dim status As FileUpdateStatus = Await CachedFileManager.CompleteUpdatesAsync(file)
If status = FileUpdateStatus.Complete Then
OutputTextBlock.Text = "File " & file.Name & " was saved."
ElseIf status = FileUpdateStatus.CompleteAndRenamed Then
OutputTextBlock.Text = "File " & file.Name & " was renamed and saved."
Else
OutputTextBlock.Text = "File " & file.Name & " couldn't be saved."
End If
Else
OutputTextBlock.Text = "Operation cancelled."
End If
End Sub
My program has been using:
Dim DLLink1 As String
DLLink1 = Trim(TextBox2.Text)
Dim DownloadDirectory1 As String
DownloadDirectory1 = Trim(TextBox4.Text)
Try
Button3.Enabled = False
' My.Computer.Network.DownloadFile(DLLink1, (DownloadDirectory1 + "/UpdatedClient.zip"))
Dim HttpReq As HttpWebRequest = DirectCast(WebRequest.Create(DLLink1), HttpWebRequest)
Using HttpResponse As HttpWebResponse = DirectCast(HttpReq.GetResponse(), HttpWebResponse)
Using Reader As New BinaryReader(HttpResponse.GetResponseStream())
Dim RdByte As Byte() = Reader.ReadBytes(1 * 1024 * 1024 * 10)
Using FStream As New FileStream(DownloadDirectory1 + "/UpdatedClient.zip", FileMode.Create)
FStream.Write(RdByte, 0, RdByte.Length)
End Using
End Using
End Using
Finally
MsgBox("Finished Download.")
Button3.Enabled = True
Label4.Visible = True
I tried this previously, and it didn't work at all:
My.Computer.Network.DownloadFile(DLLink1, (DownloadDirectory1 + "/UpdatedClient.zip"))
The website requires you to be logged in, so I made a spare account for the program:
WebBrowser1.Navigate("http://www.mpgh.net/forum/admincp/")
Timer1.Start()
Button2.Enabled = False
Then
WebBrowser1.Document.GetElementById("vb_login_username").SetAttribute("value", "AutoUpdaterAccount")
WebBrowser1.Document.GetElementById("vb_login_password").SetAttribute("value", "password")
Dim allelements As HtmlElementCollection = WebBrowser1.Document.All
For Each webpageelement As HtmlElement In allelements
If webpageelement.GetAttribute("type") = "submit" Then
webpageelement.InvokeMember("click")
Timer1.Stop()
Label5.Text = "Authorized."
Button2.Enabled = True
So now you're logged into the account, on the website, but when the code above to download runs, it downloads a zip, but it's corrupted. So I opened it with notepad++ and this is what I get (Does this mean it didn't login for the download, and it only logged in with the webbrowser and they aren't linked? Or something? Like My firefox logins aren't linked with chrome?:
The code is huge, it's like a HTML coding. Here is the link to a online notepad I put it on:
http://shrib.com/nCOucdfL
Another thing, a webbrowser can't be showing on the program, it can be on the outside not showing, like I did with the login. They also can't click the save button like on a normal web browser when a window pops up, I want it to download automatically to where they set it using a button which sets the directory as DownloadDirectory1
It must be your lucky day because today I woke up and decided that I would like to help you with your cause. I first tried to get the download to work with the web browser control but unfortunately I am sure this is not possible without extending the web browser control and we don't want to do that today.
As I mentioned in the comments, the only way I really know that this is possible (without user interaction) is to log in via the HttpWebRequest method. It's pretty tricky stuff. Definitely not for beginners.
Now I must admit that this isn't the cleanest, most "proper" and user-friendly code around, so if anyone wants to suggest a better way to do things, I am all ears.
I suggest you test this first before you incorporate it into your existing app. Just create a new vb.net app and replace all of the code in Form1 with the code below. You will have to update the usernamehere and passwordhere strings with your real username and password. Also, the file is saving to C:\file.rar by default so you can change this path if you want. This code completely removes the need for the web browser control (unless you are using it for something else) so most likely you can remove that from your real application once you incorporate this properly:
Imports System.Net
Imports System.IO
Imports System.Text
Public Class Form1
Private Const gsUserAgent As String = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0"
Const sUsername As String = "usernamehere"
Const sPassword As String = "passwordhere"
Const sMainURL As String = "http://www.mpgh.net/"
Const sCheckLoginURL As String = "http://www.mpgh.net/forum/login.php?do=login"
Const sDownloadURL As String = "http://www.mpgh.net/forum/attachment.php?attachmentid=266579&d=1417312178"
Const sCookieLoggedInMessage As String = "mpgh_imloggedin=yes"
Dim oCookieCollection As CookieCollection = Nothing
Dim sSaveFile As String = "c:\file.rar"
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
StartScrape()
End Sub
Private Sub StartScrape()
Try
Dim bContinue As Boolean = True
Dim sPostData(15) As String
sPostData(0) = UrlEncode("vb_login_username")
sPostData(1) = UrlEncode(sUsername)
sPostData(2) = UrlEncode("vb_login_password")
sPostData(3) = UrlEncode(sPassword)
sPostData(4) = UrlEncode("vb_login_password_hint")
sPostData(5) = UrlEncode("Password")
sPostData(6) = UrlEncode("s")
sPostData(7) = UrlEncode("")
sPostData(8) = UrlEncode("securitytoken")
sPostData(9) = UrlEncode("guest")
sPostData(10) = UrlEncode("do")
sPostData(11) = UrlEncode("login")
sPostData(12) = UrlEncode("vb_login_md5password")
sPostData(13) = UrlEncode("")
sPostData(14) = UrlEncode("vb_login_md5password_utf")
sPostData(15) = UrlEncode("")
If GetMethod(sMainURL) = True Then
If SetMethod(sCheckLoginURL, sPostData, sMainURL) = True Then
' Login successful
If DownloadMethod(sDownloadURL, sMainURL) = True Then
MessageBox.Show("File downloaded successfully")
Else
MessageBox.Show("Error downloading file")
End If
End If
End If
Catch ex As Exception
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
End Sub
Private Function GetMethod(ByVal sPage As String) As Boolean
Dim req As HttpWebRequest
Dim resp As HttpWebResponse
Dim stw As StreamReader
Dim bReturn As Boolean = True
Try
req = HttpWebRequest.Create(sPage)
req.Method = "GET"
req.AllowAutoRedirect = False
req.UserAgent = gsUserAgent
req.Accept = "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"
req.Headers.Add("Accept-Language", "en-us,en;q=0.5")
req.Headers.Add("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7")
req.Headers.Add("Keep-Alive", "300")
req.KeepAlive = True
resp = req.GetResponse ' Get the response from the server
If req.HaveResponse Then
' Save the cookie info if applicable
SaveCookies(resp.Headers("Set-Cookie"))
resp = req.GetResponse ' Get the response from the server
stw = New StreamReader(resp.GetResponseStream)
stw.ReadToEnd() ' Read the response from the server, but we do not save it
Else
MessageBox.Show("No response received from host " & sPage, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
bReturn = False
End If
Catch exc As WebException
MessageBox.Show("Network Error: " & exc.Message.ToString & " Status Code: " & exc.Status.ToString & " from " & sPage, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
bReturn = False
End Try
Return bReturn
End Function
Private Function SetMethod(ByVal sPage As String, ByVal sPostData() As String, sReferer As String) As Boolean
Dim bReturn As Boolean = False
Dim req As HttpWebRequest
Dim resp As HttpWebResponse
Dim str As StreamWriter
Dim sPostDataValue As String = ""
Try
req = HttpWebRequest.Create(sPage)
req.Method = "POST"
req.UserAgent = gsUserAgent
req.Accept = "application/x-shockwave-flash,text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"
req.Headers.Add("Accept-Language", "en-us,en;q=0.5")
req.Headers.Add("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7")
req.Referer = sReferer
req.ContentType = "application/x-www-form-urlencoded"
req.Headers.Add("Pragma", "no-cache")
req.Headers.Add("Keep-Alive", "300")
If oCookieCollection IsNot Nothing Then
' Pass cookie info from the login page
req.CookieContainer = SetCookieContainer(sPage)
End If
str = New StreamWriter(req.GetRequestStream)
If sPostData.Count Mod 2 = 0 Then
' There is an even number of post names and values
For i As Int32 = 0 To sPostData.Count - 1 Step 2
' Put the post data together into one string
sPostDataValue &= sPostData(i) & "=" & sPostData(i + 1) & "&"
Next i
sPostDataValue = sPostDataValue.Substring(0, sPostDataValue.Length - 1) ' This will remove the extra "&" at the end that was added from the for loop above
' Post the data to the server
str.Write(sPostDataValue)
str.Close()
' Get the response
resp = req.GetResponse
If req.HaveResponse Then
If resp.Headers("Set-Cookie").IndexOf(sCookieLoggedInMessage) > -1 Then
' Save the cookie info
SaveCookies(resp.Headers("Set-Cookie"))
bReturn = True
Else
MessageBox.Show("The email or password you entered are incorrect." & vbCrLf & vbCrLf & "Please try again.", "Unable to log in", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
bReturn = False
End If
Else
' This should probably never happen.. but if it does, we give a message
MessageBox.Show("The email or password you entered are incorrect." & vbCrLf & vbCrLf & "Please try again.", "Unable to log in", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
bReturn = False
End If
Else
' Did not specify the correct amount of parameters so we cannot continue
MessageBox.Show("POST error. Did not supply the correct amount of post data for " & sPage, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
bReturn = False
End If
Catch ex As Exception
MessageBox.Show("POST error. " & ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
bReturn = False
End Try
Return bReturn
End Function
Private Function DownloadMethod(ByVal sPage As String, sReferer As String) As Boolean
Dim req As HttpWebRequest
Dim bReturn As Boolean = False
Try
req = HttpWebRequest.Create(sPage)
req.Method = "GET"
req.AllowAutoRedirect = False
req.UserAgent = gsUserAgent
req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"
req.Headers.Add("Accept-Language", "en-US,en;q=0.5")
req.Headers.Add("Accept-Encoding", "gzip, deflate")
req.Headers.Add("Keep-Alive", "300")
req.KeepAlive = True
If oCookieCollection IsNot Nothing Then
' Set cookie info so that we continue to be logged in
req.CookieContainer = SetCookieContainer(sPage)
End If
' Save file to disk
Using oResponse As System.Net.WebResponse = CType(req.GetResponse, System.Net.WebResponse)
Using responseStream As IO.Stream = oResponse.GetResponseStream
Using fs As New IO.FileStream(sSaveFile, FileMode.Create, FileAccess.Write)
Dim buffer(2047) As Byte
Dim read As Integer
Do
read = responseStream.Read(buffer, 0, buffer.Length)
fs.Write(buffer, 0, read)
Loop Until read = 0
responseStream.Close()
fs.Flush()
fs.Close()
End Using
responseStream.Close()
End Using
oResponse.Close()
End Using
bReturn = True
Catch exc As WebException
MessageBox.Show("Network Error: " & exc.Message.ToString & " Status Code: " & exc.Status.ToString & " from " & sPage, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
bReturn = False
End Try
Return bReturn
End Function
Private Function SetCookieContainer(sPage As String) As System.Net.CookieContainer
Dim oCookieContainerObject As New System.Net.CookieContainer
Dim oCookie As System.Net.Cookie
For c As Int32 = 0 To oCookieCollection.Count - 1
If IsDate(oCookieCollection(c).Value) = True Then
' Fix dates as they seem to cause errors/problems
oCookieCollection(c).Value = Format(CDate(oCookieCollection(c).Value), "dd-MMM-yyyy hh:mm:ss")
End If
oCookie = New System.Net.Cookie
oCookie.Name = oCookieCollection(c).Name
oCookie.Value = oCookieCollection(c).Value
oCookie.Domain = New Uri(sPage).Host
oCookie.Secure = False
oCookieContainerObject.Add(oCookie)
Next
Return oCookieContainerObject
End Function
Private Sub SaveCookies(sCookieString As String)
Dim sCookieStrings() As String = sCookieString.Trim.Replace(" HttpOnly,", "").Replace(" HttpOnly", "").Replace(" domain=.mpgh.net,", "").Split(";".ToCharArray())
oCookieCollection = New CookieCollection
For Each sCookie As String In sCookieStrings
If sCookie.Trim <> "" Then
Dim sName As String = sCookie.Trim().Split("=".ToCharArray())(0)
Dim sValue As String = sCookie.Trim().Split("=".ToCharArray())(1)
oCookieCollection.Add(New Cookie(sName, sValue))
End If
Next
End Sub
Private Function UrlEncode(ByRef URLText As String) As String
Dim AscCode As Integer
Dim EncText As String = ""
Dim bStr() As Byte = Encoding.ASCII.GetBytes(URLText)
Try
For i As Long = 0 To UBound(bStr)
AscCode = bStr(i)
Select Case AscCode
Case 48 To 57, 65 To 90, 97 To 122, 46, 95
EncText = EncText & Chr(AscCode)
Case 32
EncText = EncText & "+"
Case Else
If AscCode < 16 Then
EncText = EncText & "%0" & Hex(AscCode)
Else
EncText = EncText & "%" & Hex(AscCode)
End If
End Select
Next i
Erase bStr
Catch ex As WebException
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
Return EncText
End Function
End Class
i have the following code. which creates and saves an excel file with the content in grdview4 which is great. however at the end of the application it displays a disalog box which i do not want. is there anyways to get it do the dialog box does not show?
Response.ContentEncoding = System.Text.Encoding.Unicode
Response.ContentType = "application/vnd.ms-excel"
' Response.AddHeader("content-disposition", "attachment;filename=""C:\EchoBACs\RejectedBACSBACs\rejectedBacs" & NewDate & ".xls")
' Response.TransmitFile("C:\rejectedBacs" & NewDate & ".xls")
Response.Charset = ""
Me.EnableViewState = False
Dim oStringWriter As New System.IO.StringWriter
Dim oHtmlTextWriter As New System.Web.UI.HtmlTextWriter(oStringWriter)
GridView4.HeaderRow.Style.Add("background-color", "#FFFFFF")
GridView4.RenderControl(oHtmlTextWriter)
Dim helpme As String = oStringWriter.ToString()
' Response.Write(oStringWriter.ToString())
' HttpContext.Current.Response.End()
File.WriteAllText("C:\EchoBACs\RejectedBACS\rejectedBacs" & NewDate & ".xls", helpme)
oHtmlTextWriter.Close()
Do not use response in that case, this will ask the Save as dialog box. If you want to save the file to your disk without any prompt do something like this. I am giving you in C#
System.Web.UI.WebControls.DataGrid grid = new System.Web.UI.WebControls.DataGrid();
grid.HeaderStyle.Font.Bold = true;
grid.DataSource = datatable;
grid.DataMember = datatable.TableName;
grid.DataBind();
using(StreamWriter sw = new StreamWriter ("d:\\temp\test.xls"))
{
using (HtmlTextWriter hw = new HtmlTextWriter(sw))
{
grid.RenderControl(hw);
}
}