FileStream Object - To Render Some Reports As PDF Format
Apr 15, 2010
I'm having this weird issue with the FileStream Object. I'm using this object to render some reports as PDF format.
This is the code;
PrivateSub ExporttoPDF(ByVal NameAsString)
Dim warningsAs Warning() =Nothing
Dim streamidsAsString() =Nothing
[CODE]...
Name is a parameter I'm passing to this subroutine from another one. When the application passes the first name, creates the pdf file fine, on the second name parameter fails to create the pfd file saying that Could not find a part of the path and it showing the path. I don't understand why is doing this.
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Aug 24, 2011
Filestream URI format not supported?
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Feb 17, 2011
I have an error when converting a text string to date, I've tried all the date conversions I can think of and still get the same error (cdate, date.parse and Convert.ToDateTime) this happens after I export an RDLC report to a PDF. As you can see in the below code, there are 2 identical variables called newDate1 and newDate2, one being declared before the render and the other being declared after the render. The first one works no problem but the second one I get the error: Conversion from string "16/02/2011" to type 'date' is not valid. This now becomes a program wide error and affects every date conversion done in the program, this problem remains until the program is restarted.
In short: CDate converts MM/DD/YYYY no problem, but after a PDF export it tries to convert to DD/MM/YYYY which gives an error
Public Function ExportPDFReport(ByVal ReportPath As String) As String
Dim newDate1 As Date = CDate("16/02/2011")
Dim bytes As Byte() = uxReportViewerRDLC.LocalReport.Render("PDF")
[CODE]...
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Mar 6, 2009
I'd like to make a custom control that allows the end user to format the text, similar to an HTML or RichText control. The idea is that it will be static like a label, but allow end user to specify certain tags around words to make them bold, italic, underline, hyperlink, etc, either at design time or runtime. My question more specifically is how to best approach this. My intention is to use GDI+ methods, like DrawString, etc. But my concern is the inefficiency of having to parse the text each Paint cycle to determine which tags are present in order to use the correct font style, etc. I'm not really asking HOW to do this, but more of a hint on which architectural approach to take on this. Maybe there is already some examples of this out there?
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Sep 7, 2011
I've always wanted to make a drawing program like Sketchup or AutoCAD, obviously just a lot simpler. I want to make this a long term project to be able to render the objects with a shade so that they seem 3D. I think I have been putting of this project because I don't really know how to accomplish the task of defining a curved object like a curve or ball.
[Code]...
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Sep 7, 2009
I am generating Reports on Note Pad or Excel or WordPad. But I want to generate report on PDF Format.
How To generate PDF Format Reports through Vb 6.0 or Vb.Net
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Nov 25, 2008
The goal is to write data to a SQL Server 2008 FILESTREAM file using VB.Net. An "Access Denied" message occurs when creating a FileStream object in the code(see red underlined code below). SQL Server 2008 is configured to "Allow remote clients to have streaming access to FILESTREM data" along with "Enable FILESTREAM for Transaction-SQL access"... What configuration setting is missing and causing the "Access Denied" message? Figure 1.) Code used to stream data to SQL Server managed file
[Code]...
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Jun 1, 2009
I'm having a problem with converting from one source type to a destination type. I have a form with 2 buttons (button 2 uses the OpenFileDialog to have the user open an excel file set to NewFile),(button 1 takes the contents from specific cells in NewFile and arranges them how I need into oXLApp1).
The error I get is "Unable to cast object of type 'System.IO.FileStream' to type 'Excel.Application'." in line 14 of the code below.
Public Class Form1
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
[Code]....
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Jul 26, 2011
I am a bit new to crystal reports even though I've been doing a bit of heavy lifting with it.I have this crystal report that has a datetime field.This field has a default datetime of 1753-01-01 00:00. Now I want this field to display only date like "01-03-2011" and also anywhere it sees the default date, it should display an empty string like To achieve this I used this formular (in the display string)
if CurrentFieldValue = DateValue('1753-01-01 00:00:00') then
''
else
totext(CurrentFieldValue)
This successfully changes the default date to empty string. But now I can no longer change the format to dates only.
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Jun 1, 2010
I have got a code snippet as follows:
Dim fstream = new filestream(some file here)
dim bwriter = new binarywriter(fstream)
while not end of file
read from source file
bwriter.write()
bwriter.flush()
end while
The question I have is the following. When I call bwriter.flush() does it also flush the fstream object? Or should I have to explicitly call fstream.flush() such as given in the following example:
[Code]...
A few people suggested that I need to call fstream.flush() explicitly to make sure that the data is written to the disk (or the device). However, my testing shows that the data is written to the disk as soon as I call flush() method on the bwriter object.
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Jan 29, 2012
I'm trying to set the format of a column in a datagridview.When I put the format statement in the on load event for the form, it has no effect. When I put it in the cellformatting event I get the "Object reference not set to an instance of an object" error. I checked the column name. What I am doing wrong?
This is the code:Private Sub MeetingTblDataGridView_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles MeetingTblDataGridView.CellFormatting
Me.MeetingTblDataGridView.Columns("Starttime").DefaultCellStyle.Format = "HH:mm:ss"
End Sub What I'm trying to do is get rid of the date part of a Date/Time field (stored in an Access database) in a datagridview column.
dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('09dde30f062e451a854266e66205b1cf')
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Aug 26, 2011
I am creating reports in Crystal Reports that is integrated within Visual Studio 2008, and I noticed that some of the features are disabled. One is the ability to link tables with a Right Outer Join or Full Outer Join. I also cannot "Show SQL Query" in Crystal Reports. Is this something I can enable or do I have to purchase or upgrade?
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Dec 9, 2010
Basically, I am looking for a method on how to preview reports from a datagrid or it can be from the access database which populates the data to the datagrid (then displays this in the datagridview) in vb.net vs 2010.I believe there are two methods using the ReportViewer or using Crystal Reports, but so far, I have no idea how to get them to work. The first idea would be favourable - using the data from a datagridview (which may of already been sorted, filter etc) and be able to produce a report on that.
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Jun 17, 2009
When I'm generating my database scripts for my project I'd like to manage the date format that is used in the comments in the SQLScript.I have my regional settings set to Australian format, but they seem to be disregarded.
[Code]...
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Feb 10, 2012
I am trying to pass a list in string.format as the parameters to the SQL statement, but I get the following error: Index (zero based) must be greater than or equal to zero and less than the size of the argument list. I know that I can get it to work when I list out each individual list member as the arguments, but I am wondering if there is a shortcut so I can just use the list object as the only argument.
[Code]....
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Apr 28, 2011
i am developing an application in vb.net having crystal reportsi have stored all my reports in a folder called report in my applicationbut initally when i executed i got a error msg like the report doesnot exixts in debug folderso i copied all the reports from report folder to debug folder & its workingany changes that i mke in report folder needs to be copied into the debug folder alsois it possible that the reports be executed from reports folder only & not from debug folder as everytime i need to make changes in the debug folderhow can i chnage the path to reports folder
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Dec 1, 2011
How can we create a report in vb.net without using any crystal reports
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Jun 21, 2010
I am working on VB.NET(Visual studio 2008)..I completed developing my application and i need to deploy the application. I tried it and faced problems in some areas like adding crystal reports to the setup and deployment. I created a setup file to my application and everything is fine except crystal reports...its showing the error like; An error occurred in crystalDecisions.Reports, crystalEngine threw exception.
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Aug 25, 2011
I am attempting to read specific lines of GIANT text files (> 150 MB) with hundreds of thousands of lines. The files are contained on an FTP site. I can successfully open the files using FTPwebrequest and streamreader but to get to a specific line using streamreader, you have to read every line before it. Obviously this takes a lot of time when you need to get to the millionth line.
A much faster way, I think, would be to use filestream and the filestream.position function. However, I'm not sure how to open a file as a filestream from FTP. I have tried:
Dim ftpaddress as string = "ftp://####@ftp.textfile.asc+"
Dim fileStream1 As New FileStream(ftpaddress, IO.FileMode.Open, IO.FileAccess.Read)
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Feb 23, 2011
I'm making a type of download manager which downloads parts of a file using HTTPREQUEST.addrange. The parts download without a problem and currently I use 5 instances of the same class to download the parts simultaneously each one downloading a different section of the file. Now my problem is that I don't want to save each part as a file then merge them later, I want to use a singular filestream and append everything asynchronously. In the code below I attempted to use the seek method but it feels like it changes the seek for all of the other parts as well.
[Code]...
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Aug 15, 2011
i searched a bit but i cant find something useful.i need to take my files to filestream (i can do this with file paths)and i wanna save this files to somewhere else on my program. Is it possible that with the using FileStream?
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Feb 23, 2009
I am trying to read in a file and store the byte position of each line read so that I can write out to another file the records in any order that I want. I am doing more manipulation of the lines, hence why I need the line position from the original file, but for simplicity sake, I am just including code to display the problem I am encountering. When I read in the file, I am getting the correct file position, but when I write out the lines, every 1024 characters it is re-writing whatever current line it is on. I am assume there is some buffer that is coming into play that I am not familiar with,
[Code]...
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Jul 27, 2009
VB.NET application which allows user to split a file in smaller files. However the stand alone executable of the application,had a permission problem using filestream to read a file without an OutOfMemory exception, while selecting to split locatein certain directories like "C:".To solve the problem i checked My Project window and the "Security" tab, and i tried checking the checkbox: "Enable ClickOnce Security Setting" and selecting "fulltrust application". This added to my app.manifest these lines of code:
<applicationRequestMinimum>
<defaultAssemblyRequest permissionSetReference="Custom" />
<PermissionSet class="System.Security.PermissionSet" version="1" Unrestricted="true"
[code].....
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Jul 5, 2011
I'm working on a project to extract documents from a SQL Database and writing those documents to a network drive. However some of the files pointed at in the DB are encrypted files (RijndaelManaged)that reside on another network driveI have been able to retrieve, and decrypt the files using streams. Now aving problems saving or converting the Memorystream into an actual file.
Here is my code
Public
Sub ExtractDocument(ByVal ThisDocumentInfo
[code].....
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Mar 1, 2009
I am using BinaryFormatters (System.Runtime.Serialization.Formatters.Binary.BinaryFormatter) and FileStreams (System.IO.FileStream) to perform simple Open, Save, and Save As commands. I am using a separate FileStream and BinaryFormatter in each method.
My issue is that there is a delay for between four and ten or so seconds after performing any of those abilities before you can perform any other of them. Apparently the file is open in "another process", which (my guess) is the FileStream.Let's say I save and close a file in my app. I then go File > Open and select the same file and go to open it. I get that error returned.This isn't really an issue with the code, it's more me asking what the reasons are for why this is happening. What would be a way to work around this?
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Feb 18, 2010
I have a filestream, and I want to save a file from that filestream? Like there are bytes in that file stream, and from those I want a "file.exe" to automatically appear on my desktop.
I'm using a code snippet, and I think this is the important part:
Dim fstr As New FileStream("file.exe", FileMode.OpenOrCreate, FileAccess.Write)
fstr.Write(validArg1, validArg2, validArg3)
fstr.Close()
Do I have to use a for loop? Or is there a function like this:
IO.File.WriteAllBytes(myPath, fstr.AllBytes)
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Jul 22, 2009
I am trying to build a resource file for a website basically jamming all the images into a compressed file that is then unpacked on the output buffers to the client. my question is in vb2005 can a filestream be multi threaded if you know the size of the converted file, ala like a bit torrent and work on pieces of the filestream ( the individual files in this case) and add them to the resource filestream when they are done instead of one at a time?
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Jun 25, 2009
The file read is a mp3 or wav file.But my code Comb_Audio_Length, cannot determine the bitrate correctly as different mp3 and wav file have different bitrate....How can I read the bitrate value so as to calculate the audio length correctly?
Dim fs As FileStream
fs = New FileStream(strFilePath, FileMode.Open, FileAccess.Read)
Dim filesize As Int32
[code].....
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May 24, 2012
making a WCF service before or do know anything about them, so this should be pretty simple. I have to get this "program" to take an excel file from a folder, and send it to this service but I keep getting this very specific error message:
The remote server returned an unexpected response: (400) Bad Request.
Probably one of the most specific error messages I have come across in my days. This is my code for the program, and what I have as his "service reference".
vb
Imports System.IOImports System.ThreadingImports System.Net.MailImports System.TextImports WindowsApplication1.ServiceReference1Imports SystemImports Microsoft.VisualBasicPublic Class Form1 Const Processfolder As String = "C:TestScottsCrap" Const Processedfolder As String = "C:TestScottsCrapCrap" Const ErrorFolder As String = "C:TestScottsCrapError" Private Sub Button1_Click(sender As
[code]....
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Aug 6, 2009
My goal is to upload a string to a txt file on an ftp server.Here is what I have found so far:
vb
Dim clsRequest As System.Net.FtpWebRequest = _
DirectCast(System.Net.WebRequest.Create(RemoteFilename), System.Net.FtpWebRequest)
clsRequest.Credentials = New System.Net.NetworkCredential("usr", "pw")
[code]....
Is there a way to convert a String into something that clsStream.Write will accept?
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