I want to read a file from a FTP server without downloading it to a local file. I wrote a function but it does not work:
private string GetServerVersion()
{
WebClient request = new WebClient();
string url = FtpPath + FileName;
string version = "";
request.Credentials = new NetworkCredential(ftp_user, ftp_pas);
try
{
byte[] newFileData = request.DownloadData(new Uri(FtpPath)+FileName);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
}
catch (WebException e)
{
}
return version;
}
Here's a simple working example using your code to grab a file from the Microsoft public FTP servers:
WebClient request = new WebClient();
string url = "ftp://ftp.microsoft.com/developr/fortran/" +"README.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
try
{
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
Console.WriteLine(fileString);
}
catch (WebException e)
{
// Do something such as log error, but this is based on OP's original code
// so for now we do nothing.
}
I reckon you're missing a slash on this line here in your code:
string url = FtpPath + FileName;
Perhaps between FtpPath and FileName ?
Small binary file
If the file is small, the easiest way is using WebClient.DownloadData:
WebClient client = new WebClient();
string url = "ftp://ftp.example.com/remote/path/file.zip";
client.Credentials = new NetworkCredential("username", "password");
byte[] contents = client.DownloadData(url);
Small text file
If the small file is a text file, use WebClient.DownloadString:
string contents = client.DownloadString(url);
It assumes that the file contents is in UTF-8 encoding (a plain ASCII file will do too). If you need to use a different encoding, use WebClient.Encoding property.
Large binary file
If the file is large, so that you need to process it in chunks, instead of loading it to memory whole, use FtpWebRequest:
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.DownloadFile;
using (Stream stream = request.GetResponse().GetResponseStream())
{
byte[] buffer = new byte[10240];
int read;
while ((read = stream.Read(buffer, 0, buffer.Length)) > 0)
{
// process the chunk in "buffer"
}
}
You can also simplify the code by using WebClient.OpenRead.
Large text file
If the large file is a text file and you want to process it by lines, instead of by chunks of a fixed size, use StreamReader:
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.txt");
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.DownloadFile;
using (Stream stream = request.GetResponse().GetResponseStream())
using (StreamReader reader = new StreamReader(stream))
{
while (!reader.EndOfStream)
{
string line = reader.ReadLine();
// process the line
Console.WriteLine(line);
}
}
Again, this assumes UTF-8 encoding. If you want to use another encoding, use an overload of StreamReader constructor that takes also Encoding.
As previously, you can simplify the code by using WebClient.OpenRead.
Stream interface
Though, in many cases, you will want to use the downloaded data in some API that uses the Stream interface. In that case, instead of using any of the solutions above, directly use the stream returned by request.GetResponse().GetResponseStream() or WebClient.OpenRead in the API.
For an example, see Transferring files from FTP directly to Azure Blob storage in C#.
The code you have above is very simillar to another Stackoverlow example I found and used myself 2 days ago. Provided you set the URI, User and Password correctly, it will download the file and set the contents to FileString. I'm not sure what you mean by wanting to read the file without downloading it. This is not really an option.
If you want to look at file attributes (I see you mention "version"), you could use the code below to get all the file Name, Data, and Size from the FTP server without downloading the file.
Call GetFileInfo and pass in the file name (make sure you follow through the code to set the full FTP path, User and Password). This will give you back a FTPFileInfo object with a Name, Date and Size.
public static FTPFileInfo GetFileInfo(string fileName)
{
var dirInfo = WordstockExport.GetFTPDirectoryDetails();
var list = FTPFileInfo.Load(dirInfo);
try
{
FTPFileInfo ftpFile = list.SingleOrDefault(f => f.FileName == fileName);
return ftpFile;
}
catch { }
return null;
}
class FTPFileInfo
{
private DateTime _FileDate;
private long _FileSize;
private string _FileName;
public DateTime FileDate
{
get { return _FileDate; }
set { _FileDate = value; }
}
public long FileSize
{
get { return _FileSize; }
set { _FileSize = value; }
}
public string FileName
{
get { return _FileName; }
set { _FileName = value; }
}
public FTPFileInfo() { }
public static FTPFileInfo LoadFromLine(string line)
{
FTPFileInfo file = new FTPFileInfo();
string[] ftpFileInfo = line.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
file._FileDate = DateTime.Parse(ftpFileInfo[0] + " " + ftpFileInfo[1]);
file._FileSize = long.Parse(ftpFileInfo[2]);
file._FileName = ftpFileInfo[3];
return file;
}
public static List<FTPFileInfo> Load(string listDirectoryDetails)
{
List<FTPFileInfo> files = new List<FTPFileInfo>();
string[] lines = listDirectoryDetails.Split("\r\n".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
foreach(var line in lines)
files.Add(LoadFromLine(line));
return files;
}
}
private static string GetFTPDirectoryDetails()
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(App.Export_FTPPath);
request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
request.Credentials = new NetworkCredential(App.FTP_User, App.FTP_Password);
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
string fileLines = reader.ReadToEnd();
reader.Close();
response.Close();
return fileLines;
}
It is impossible to know what the issue is without details about the error/exception.
At a guess, you do not seem to be assigning a new value to version after the initial declaration
string version = "";
Try changing your code to
version = System.Text.Encoding.UTF8.GetString(newFileData);
C Sharp GUI app. Minimal ftp transfer, not elegant but it works fine.
GUI, not console.
Weather from noaa. Find your region (look for your metar)!
A METAR weather report is predominantly used by pilots in fulfillment of a part of a pre- flight
Build with vs 2012 premium RC (july 2012)
(click on label, not button)
using System;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.IO;
using System.Collections.Generic;
namespace getweather
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void CYYY_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYYY.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
private void CYSC_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYSC.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
private void CYQB_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYQB.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
private void CYUY_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYUY.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
private void CYHU_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYHU.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
}
}
WebClient request = new WebClient();
string url = "ftp://ftp.microsoft.com/developr/fortran/" +"README.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
request.Proxy = null;
try
{
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
Console.WriteLine(fileString);
}
catch (WebException e)
{
// Do something such as log error, but this is based on OP's original code
// so for now we do nothing.
}
I know this is an old question, but I thought I'd suggest using path.combine for the next guy reading this. Helps clean up these kinds of issues.
string url = Path.Combine("ftp://ftp.microsoft.com/developr/fortran", "README.TXT");
We can use below method to get the file attribute from ftp without downloading the file.This is working fine for me.
public DataTable getFileListFTP(string serverIP,string userID,string Password)
{
DataTable dt = new DataTable();
string[] fileListArr;
string fileName = string.Empty;
long fileSize = 0;
// DateTime creationDate;
string creationDate;
FtpWebRequest Request = (FtpWebRequest)WebRequest.Create(serverIP);
Request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
Request.Credentials = new NetworkCredential(userID,Password);
FtpWebResponse Response = (FtpWebResponse)Request.GetResponse();
Stream ResponseStream = Response.GetResponseStream();
StreamReader Reader = new StreamReader(ResponseStream);
dt.Columns.Add("FileName", typeof(String));
dt.Columns.Add("FileSize", typeof(String));
dt.Columns.Add("CreationDate", typeof(DateTime));
//CultureInfo c = new CultureInfo("ES-ES");
while (!Reader.EndOfStream)//Read file name
{
fileListArr = Convert.ToString(Reader.ReadLine()).Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
fileSize = long.Parse(fileListArr[4]);
creationDate = fileListArr[6] + " " + fileListArr[5] + " " + fileListArr[7];
//creationDate =Convert.ToDateTime(fileListArr[6] + " " + fileListArr[5] + " " + fileListArr[7], c).ToString("dd/MMM/yyyy", DateTimeFormatInfo.InvariantInfo);
fileName = Convert.ToString(fileListArr[8]);
DataRow drow = dt.NewRow();
drow["FileName"] = fileName;
drow["FileSize"] = fileName;
drow["CreationDate"] = creationDate;
dt.Rows.Add(drow);
}
Response.Close();
ResponseStream.Close();
Reader.Close();
return dt;
}
Take a look at my FTP class, it might be exactly what you need.
Public Class FTP
'-------------------------[BroCode]--------------------------
'----------------------------FTP-----------------------------
Private _credentials As System.Net.NetworkCredential
Sub New(ByVal _FTPUser As String, ByVal _FTPPass As String)
setCredentials(_FTPUser, _FTPPass)
End Sub
Public Sub UploadFile(ByVal _FileName As String, ByVal _UploadPath As String)
Dim _FileInfo As New System.IO.FileInfo(_FileName)
Dim _FtpWebRequest As System.Net.FtpWebRequest = CType(System.Net.FtpWebRequest.Create(New Uri(_UploadPath)), System.Net.FtpWebRequest)
_FtpWebRequest.Credentials = _credentials
_FtpWebRequest.KeepAlive = False
_FtpWebRequest.Timeout = 20000
_FtpWebRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile
_FtpWebRequest.UseBinary = True
_FtpWebRequest.ContentLength = _FileInfo.Length
Dim buffLength As Integer = 2048
Dim buff(buffLength - 1) As Byte
Dim _FileStream As System.IO.FileStream = _FileInfo.OpenRead()
Try
Dim _Stream As System.IO.Stream = _FtpWebRequest.GetRequestStream()
Dim contentLen As Integer = _FileStream.Read(buff, 0, buffLength)
Do While contentLen <> 0
_Stream.Write(buff, 0, contentLen)
contentLen = _FileStream.Read(buff, 0, buffLength)
Loop
_Stream.Close()
_Stream.Dispose()
_FileStream.Close()
_FileStream.Dispose()
Catch ex As Exception
MessageBox.Show(ex.Message, "Upload Error: ", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
End Sub
Public Sub DownloadFile(ByVal _FileName As String, ByVal _ftpDownloadPath As String)
Try
Dim _request As System.Net.FtpWebRequest = System.Net.WebRequest.Create(_ftpDownloadPath)
_request.KeepAlive = False
_request.Method = System.Net.WebRequestMethods.Ftp.DownloadFile
_request.Credentials = _credentials
Dim _response As System.Net.FtpWebResponse = _request.GetResponse()
Dim responseStream As System.IO.Stream = _response.GetResponseStream()
Dim fs As New System.IO.FileStream(_FileName, System.IO.FileMode.Create)
responseStream.CopyTo(fs)
responseStream.Close()
_response.Close()
Catch ex As Exception
MessageBox.Show(ex.Message, "Download Error: ", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
End Sub
Public Function GetDirectory(ByVal _ftpPath As String) As List(Of String)
Dim ret As New List(Of String)
Try
Dim _request As System.Net.FtpWebRequest = System.Net.WebRequest.Create(_ftpPath)
_request.KeepAlive = False
_request.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails
_request.Credentials = _credentials
Dim _response As System.Net.FtpWebResponse = _request.GetResponse()
Dim responseStream As System.IO.Stream = _response.GetResponseStream()
Dim _reader As System.IO.StreamReader = New System.IO.StreamReader(responseStream)
Dim FileData As String = _reader.ReadToEnd
Dim Lines() As String = FileData.Split(New String() {Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries)
For Each l As String In Lines
ret.Add(l)
Next
_reader.Close()
_response.Close()
Catch ex As Exception
MessageBox.Show(ex.Message, "Directory Fetch Error: ", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
Return ret
End Function
Private Sub setCredentials(ByVal _FTPUser As String, ByVal _FTPPass As String)
_credentials = New System.Net.NetworkCredential(_FTPUser, _FTPPass)
End Sub
End Class
To initialize:
Dim ftp As New FORM.FTP("username", "password")
ftp.UploadFile("c:\file.jpeg", "ftp://domain/file.jpeg")
ftp.DownloadFile("c:\file.jpeg", "ftp://ftp://domain/file.jpeg")
Dim directory As List(Of String) = ftp.GetDirectory("ftp://ftp.domain.net/")
ListBox1.Items.Clear()
For Each item As String In directory
ListBox1.Items.Add(item)
Next
https://stackoverflow.com/a/28669746/2701974
I am struggling a bit to populate my dropdown list, can anybody tell me where I am going wrong?
ASPX CODE it keeps looping after getting the connection string - back into the connection string method.
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindDropDownList();
}
}
private string GetConnectionString()
{
using (DataManager dmgr = new DataManager())
{
dmgr.Connect(ConfigurationManager.AppSettings["ProductionKey"]);
return BindDropDownList();
}
}
public string BindDropDownList()
{
DataTable dt = new DataTable();
SqlConnection connection = new SqlConnection(GetConnectionString());
try
{
connection.Open();
string sqlStatement = "SELECT * FROM Itemseriesmaster";
SqlCommand sqlCmd = new SqlCommand(sqlStatement, connection);
SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
sqlDa.Fill(dt);
if (dt.Rows.Count > 0)
{
DropDownList1.DataSource = dt;
DropDownList1.DataTextField = "Description"; // the items to be displayed in the list items
DropDownList1.DataValueField = "ID"; // the id of the items displayed
DropDownList1.DataBind();
}
}
catch (SqlException ex)
{
string msg = "Fetch Error:";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
connection.Close();
}
return AppRelativeTemplateSourceDirectory;
}
DataManager Code - where the code calls into
public DataSet ItemSeriesMaster(int id, string description)
{
object[] args = new object[2] { id, description };
return CallSp(MethodBase.GetCurrentMethod(), args) as DataSet; // i know this is not an sp call.. just testing
}
}
}
I am trying to go to my database and bring out the list.
I use Dapper to select data form Mssql, It result display "null"
(use stored procedure、 List to get data, and "myDictionary[0].Account" and myDictionary[0].Password to get detail information) ,
but MS SQL database have data.
How can I fix code ? thanks.
public void Do_Click(object sender, EventArgs e)
{
string strAccount = Request.Form["userAccount"];
string strPassword = Request.Form["userPwd"];
using (var conn = new SqlConnection(strConn))
{
try
{
conn.Open();
List<LoginModel> myDictionary =
conn.Query<LoginModel>(#"uspSelectLoginChk",
new { LoginAcc = strAccount, LoginPsd = strPassword }, commandType: CommandType.StoredProcedure).ToList();
string strAccountChk = myDictionary[0].Account;
string strPASChk = myDictionary[0].Password;
conn.Close();
if (strAccountChk != null && strAccountChk != null)
{
Response.Redirect("test.aspx");
}
else
{
}
}
catch (Exception ex)
{
response.write( ex.ToString());
}
}
}
Try this one,
// Modified your code
public void Do_Click(object sender, EventArgs e)
{
string strAccount = Request.Form["userAccount"];
string strPassword = Request.Form["userPwd"];
var _para = new DynamicParameters();
_para.Add("#LoginAcc", strAccount);
_para.Add("#LoginPsd", strPassword);
var _list = _con.Query<LoginModel>("uspSelectLoginChk", _para, commandType: CommandType.StoredProcedure); // _con is SqlConnection _con = new SqlConnection("your connection string")
if(_list != null) {
Response.Redirect("test.aspx");
}
}
you need to check:
execute sp in sql with parameter which can view in debug the code.
example:
exec uspSelectLoginChk 'LoginAccValue', 'LoginPsdValue'
if a any data in sql execute,your code is error,if no data, you can insert data before with a data debug result.
Thanks
I'm designing in my web page:
namespace photoshops
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
onflbload(sender, e);
}
public void onflbload(object sender, EventArgs e)
{
// Create a byte[] from the input file
int len = flbload.PostedFile.ContentLength;
byte[] pic = new byte[len];
flbload.PostedFile.InputStream.Read(pic, 0, len);
// Insert the image and comment into the database
SqlConnection connection = new SqlConnection(#"Data Source=DEVI\SQLEXPRESS;
Initial Catalog =cat; Integrated Security=SSPI");
try
{
connection.Open();
SqlCommand cmd = new SqlCommand("insert into tblphotosettings " +
"(BillNo,CustomerName,Address,StartDate,EndDate,Systemurl,Numberofcopies,Amount,Total)
values (#BillNo,#CustomerName,#Address,#StartDate,#EndDate,#Systemurl,#Numberofcopies,#Amount,#Total)", connection);
cmd.Parameters.Add("#BillNo", SqlDbType.NVarChar).Value = TextBox1.Text;
cmd.Parameters.Add("#CustomerName", SqlDbType.NVarChar).Value =TextBox2.Text;
cmd.Parameters.Add("#Address", SqlDbType.NVarChar).Value = TextBox3.Text;
cmd.Parameters.Add("#StartDate", SqlDbType.NVarChar).Value = Rdbsdate.SelectedDate;
cmd.Parameters.Add("#EndDate", SqlDbType.NVarChar).Value = Rdbddate.SelectedDate;
cmd.Parameters.Add("#Systemurl", SqlDbType.Image).Value = pic;
SqlParameter Src = new SqlParameter("#FilePath", SqlDbType.VarChar, 450);
Src.Value = pic.GetName();
cmd.Parameters.Add(Src);
cmd.Parameters.Add("#Numberofcopies", SqlDbType.NVarChar).Value =TextBox7.Text;
cmd.Parameters.Add("#Amount", SqlDbType.NVarChar).Value = TextBox8.Text;
cmd.Parameters.Add("#Total", SqlDbType.NVarChar).Value = TextBox9.Text;
cmd.ExecuteNonQuery();
}
finally
{
connection.Close();
}
}
}
}
My error
Error 1 'System.Array' does not contain a definition for 'GetName'
and no extension method 'GetName' accepting a first argument of type 'System.Array' could
be found (are you missing a using directive or an assembly reference?)
C:\Documents and Settings\Administrator\My Documents\Visual Studio
2008\Projects\photoshops\photoshops\photosetting.aspx.cs 52 29 photoshops
It sounds like you want the image location in the database.
Your code actually has the byte[] being used in the INSERT statement:
cmd.Parameters.Add("#Systemurl", SqlDbType.Image).Value = pic;
Suggest pick one:
Continue with saving the binary to the database as you have above.
Save the byte[] as a file to a location on disk. Use that filename like so:
cmd.Parameters.Add("#ImagePath", SqlDbType.NVarChar).Value = myImagePathOnDisk;
You just need to do code 2 line through that you can be able store image from filepath and can be able to store into database.
string flPath = "C:\\1\\noimg.png";
byte[] imageBytes = File.ReadAllBytes(flPath);
imageBytes is your part of interest holding whole arrays of bytes of your image, you just need to insert this to column of table of image datatype.
string filename = FileUpload1.FileName.ToString();
if (filename != "")
{
ImageName = FileUpload1.FileName.ToString();
ImagePath = Server.MapPath("Images");
SaveLocation = ImagePath + "\\" + ImageName;
SaveLocation1 = "~/Image/" + ImageName;
sl1 = "Images/" + ImageName;
FileUpload1.PostedFile.SaveAs(SaveLocation);
}...........try it for image
[Below is the almost full Code modified. Currently shows illegal character error when being read].
I have a C# ASP.NET application which is currently reading an XML file from the file system and then loading it into a GridView control. In the grid I can Delete rows. There is also an file upload button below the grid which upload PDF files and they show up in the grid. My code is basically a modified version of this code
The next stage of my work involves reading the XML data as String from a database field--instead of from the XML file. For that to happen, I think I can start out by just reading from the XML file, making changes in the aspx page, and the writing the 'dataset' into a database field called 'PDF_Storage'. How can I do that. Crucially, I need to be able to convert the dataset into some kind of string format for storage. Here is my code snippet.
My database is Oracle 10 but I can figure out the Update sql syntax.
SAMPLE XML FILE:
<DataSet>
<PDF>
<pdf>MyPDF1.pdf</pdf>
</PDF>
<PDF>
<pdf>MyPDF2.pdf</pdf>
</PDF>
<PDF>
<pdf>MyPDF3.pdf</pdf>
</PDF>
</DataSet>
And the corresponding code:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Oracle.DataAccess.Client;
using System.Web.Configuration;
using System.IO;
using System.Xml;
using System.Text.RegularExpressions;
public partial class XMLGridTest : System.Web.UI.Page
{
public static string GetConnString()
{
return WebConfigurationManager.ConnectionStrings["ConnectionString"].ToString();
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
binddata();
}
}
void binddata()
{
DataSet ds = new DataSet();
// ds.ReadXml(Server.MapPath("testxml.xml"));
String strConnect = GetConnString();
OracleConnection oracleConn = new OracleConnection();
oracleConn.ConnectionString = strConnect;
oracleConn.Open();
OracleCommand cmd = new OracleCommand();
cmd.Connection = oracleConn;
cmd.CommandType = CommandType.Text;
cmd.CommandText = "SELECT PDF_Storage FROM CampusDev.CU_POLY WHERE OBJECTID = " + Request.QueryString["OBJECTID"];
OracleDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
if (!reader.IsDBNull(0))
{
//## Line Below as the 'illegal characters' problem###
ds.ReadXml(reader[0].ToString(), XmlReadMode.IgnoreSchema);
gv.DataSource = ds;
gv.DataBind();
}
else
{
// Response.Write(reader.GetString(1));
// TextBox1.Text = reader.GetString(1);
}
}
// gv.DataSource = ds;//##Hard coded for XML. Works!
// gv.DataBind();
//Finally, close the connection
oracleConn.Close();
}
protected void Canceldata(object s, GridViewCancelEditEventArgs e)
{
gv.EditIndex = -1;
binddata();
}
protected void pageddata(object s, GridViewPageEventArgs e)
{
gv.PageIndex = e.NewPageIndex;
binddata();
}
protected void insert(object sender, EventArgs e)
{
/////////////////////////////////File Upload Code/////////////////////////////////
// Initialize variables
string sSavePath = "ParcelPDF/"; ;
if (fileupload.PostedFile == null)
{
Label1.Text = "Must Upload a PDF file!";
return;
}
HttpPostedFile myFile = fileupload.PostedFile;
int nFileLen = myFile.ContentLength;
// Check file extension (must be JPG)
if (System.IO.Path.GetExtension(myFile.FileName).ToLower() != ".pdf")
{
Label1.Text = "The file must have an extension of .pdf";
return;
}
// Read file into a data stream
byte[] myData = new Byte[nFileLen];
myFile.InputStream.Read(myData, 0, nFileLen);
// Make sure a duplicate file doesn’t exist. If it does, keep on appending an incremental numeric until it is unique
string sFilename = System.IO.Path.GetFileName(myFile.FileName);
int file_append = 0;
while (System.IO.File.Exists(Server.MapPath(sSavePath + sFilename)))
{
file_append++;
sFilename = System.IO.Path.GetFileNameWithoutExtension(myFile.FileName) + file_append.ToString() + ".pdf";
}
// Save the stream to disk
System.IO.FileStream newFile = new System.IO.FileStream(Server.MapPath(sSavePath + sFilename), System.IO.FileMode.Create);
newFile.Write(myData, 0, myData.Length);
newFile.Close();
binddata();
DataSet ds = gv.DataSource as DataSet;
DataRow dr = ds.Tables[0].NewRow();
// dr[0] = pdf.Text;
dr[0] = sFilename.ToString();
ds.Tables[0].Rows.Add(dr);
ds.AcceptChanges();
string blah = "blah";
Response.Write(ds.Tables.ToString());
// ds.WriteXml(Server.MapPath("testxml.xml"));
String strConnect = GetConnString();
OracleConnection oracleConn = new OracleConnection();
oracleConn.ConnectionString = strConnect;
oracleConn.Open();
OracleCommand cmd = new OracleCommand();
cmd.Connection = oracleConn;
cmd.CommandType = CommandType.Text;
// cmd.CommandText = "SELECT OBJECTID,COMMENTS FROM CampusDev.CU_POLY WHERE OBJECTID = " + Request.QueryString["OBJECTID"];
cmd.CommandText = "UPDATE CampusDev.CU_POLY SET PDF_Storage = :PDF_Storage WHERE OBJECTID = " + Request.QueryString["OBJECTID"];
StringWriter SW = new StringWriter();
ds.WriteXml(SW);
cmd.Parameters.Add(":PDF_Storage", SW.ToString());
cmd.ExecuteNonQuery();
oracleConn.Close();
binddata();
}
protected void Deletedata(object s, GridViewDeleteEventArgs e)
{
binddata();
DataSet ds = gv.DataSource as DataSet;
ds.Tables[0].Rows[gv.Rows[e.RowIndex].DataItemIndex].Delete();
// ds.WriteXml(Server.MapPath("testxml.xml"));//Disabled now. Do database. Irfan. 07/09/10
String strConnect = GetConnString();
OracleConnection oracleConn = new OracleConnection();
oracleConn.ConnectionString = strConnect;
oracleConn.Open();
OracleCommand cmd = new OracleCommand();
cmd.Connection = oracleConn;
cmd.CommandType = CommandType.Text;
cmd.CommandText = "UPDATE CampusDev.CU_POLY SET PDF_Storage = :PDF_Storage WHERE OBJECTID = " + Request.QueryString["OBJECTID"];
StringWriter SW = new StringWriter();
ds.WriteXml(SW,XmlWriteMode.IgnoreSchema);
Regex regex = new Regex(#"(\r\n|\r|\n)+");
string newText = regex.Replace(SW.ToString(), "");
cmd.Parameters.Add(":PDF_Storage", newText);
cmd.ExecuteNonQuery();
oracleConn.Close();
binddata();
string blah = "blah";
}
Here is how I have done this in the past. For the insert you can basically just write the dataset's xml representation out to a string and save it directly to a field in the database. In this case I leveraged Sql Server 2008 and an XML datatype for the database field. I think the datatype in Oracle is XMLTYPE.
Insert:
public static void InsertDataSet(string key, DataSet dataSet)
{
string xml = string.Empty;
using (MemoryStream ms = new MemoryStream())
{
dataSet.WriteXml(ms, XmlWriteMode.WriteSchema);
ms.Position = 0;
using (StreamReader sr = new StreamReader(ms))
{
xml = sr.ReadToEnd();
}
using (SqlServerConnection c = new SqlServerConnection(connectionString))
{
c.command.CommandType = CommandType.StoredProcedure;
c.command.CommandText = "some stored procedure to do the insert";
c.command.Parameters.Clear();
c.command.Parameters.Add(new SqlParameter("#key", key));
c.command.Parameters.Add(new SqlParameter("#xml", xml));
c.command.ExecuteNonQuery();
}
}
}
Getting the dataset back out of the database is as simple as reading the xml data from the database back into a TextReader and then building a new DataSet.
Get:
public static DataSet GetDataSet(string key)
{
using (SqlServerConnection c = new SqlServerConnection(connectionString))
{
c.command.CommandType = CommandType.StoredProcedure;
c.command.CommandText = "some stored procedure to get the xml";
c.command.Parameters.Clear();
c.command.Parameters.Add(new SqlParameter("#key", key));
dr = c.command.ExecuteReader();
if (dr == null)
{
return null;
}
if (dr.HasRows)
{
while (dr.Read())
{
if (dr["xml_field"] != DBNull.Value)
{
TextReader tr = new StringReader(dr["xml_field"].ToString());
result = new DataSet();
result.ReadXml(tr, XmlReadMode.ReadSchema);
}
}
}
}
return result;
}
Hope this helps.
Enjoy!