I'm using the following code to generate an openxml document and save it on the server and that works fine, however now i'm trying to generate it to a byte stream to serve out straight away without saving to the server but the document gets corrupted in the process.
Working Code
public static void CreateWordDoc(List<objReplace> lstReplace, String TemplateFile, String OutputPath)
{
File.Delete(OutputPath);
File.Copy(TemplateFile, OutputPath);
using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(OutputPath, true))
{
string docText = null;
using (StreamReader sr = new StreamReader(wordDoc.MainDocumentPart.GetStream()))
docText = sr.ReadToEnd();
foreach (var ro in lstReplace)
{
Regex regexText = new Regex(ro.Find);
docText = regexText.Replace(docText, ro.Replace);
}
using (StreamWriter sw = new StreamWriter(wordDoc.MainDocumentPart.GetStream(FileMode.Create)))
{
sw.Write(docText);
}
}
}
Code that produces currupted XML - that I want to get working
public static byte[] CreateWordDocToStream(List<objReplace> lstReplace, String TemplateFile)
{
string docText = null;
byte[] filebytes = File.ReadAllBytes(TemplateFile);
using (MemoryStream stream = new MemoryStream(filebytes))
{
using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(stream, true))
{
using (StreamReader sr = new StreamReader(wordDoc.MainDocumentPart.GetStream()))
docText = sr.ReadToEnd();
foreach (var ro in lstReplace)
{
Regex regexText = new Regex(ro.Find);
docText = regexText.Replace(docText, ro.Replace);
}
}
}
return Encoding.ASCII.GetBytes(docText);
}
Related
I was trying to read CSV file in C#.
I have tried File.ReadAllLines(path).Select(a => a.Split(';')) way but the issue is when there is \n multiple line in a cell it is not working.
So I have tried below
using LumenWorks.Framework.IO.Csv;
var csvTable = new DataTable();
using (TextReader fileReader = File.OpenText(path))
using (var csvReader = new CsvReader(fileReader, false))
{
csvTable.Load(csvReader);
}
for (int i = 0; i < csvTable.Rows.Count; i++)
{
if (!(csvTable.Rows[i][0] is DBNull))
{
var row1= csvTable.Rows[i][0];
}
if (!(csvTable.Rows[i][1] is DBNull))
{
var row2= csvTable.Rows[i][1];
}
}
The issue is the above code throwing exception as
The CSV appears to be corrupt near record '0' field '5 at position '63'
This is because the header of CSV's having two double quote as below
"Header1",""Header2""
Is there a way that I can ignore double quotes and process the CSV's.
update
I have tried with TextFieldParser as below
public static void GetCSVData()
{
using (var parser = new TextFieldParser(path))
{
parser.HasFieldsEnclosedInQuotes = false;
parser.Delimiters = new[] { "," };
while (parser.PeekChars(1) != null)
{
string[] fields = parser.ReadFields();
foreach (var field in fields)
{
Console.Write(field + " ");
}
Console.WriteLine(Environment.NewLine);
}
}
}
The output:
Sample CSV data I have used:
Any help is appreciated.
Hope this works!
Please replace two double quotes as below from csv:
using (FileStream fs = new FileStream(Path, FileMode.Open, FileAccess.ReadWrite, FileShare.None))
{
StreamReader sr = new StreamReader(fs);
string contents = sr.ReadToEnd();
// replace "" with "
contents = contents.Replace("\"\"", "\"");
// go back to the beginning of the stream
fs.Seek(0, SeekOrigin.Begin);
// adjust the length to make sure all original
// contents is overritten
fs.SetLength(contents.Length);
StreamWriter sw = new StreamWriter(fs);
sw.Write(contents);
sw.Close();
}
Then use the same CSV helper
using LumenWorks.Framework.IO.Csv;
var csvTable = new DataTable();
using (TextReader fileReader = File.OpenText(path))
using (var csvReader = new CsvReader(fileReader, false))
{
csvTable.Load(csvReader);
}
Thanks.
Hi I am trying to make working this piece of code, after the copy of the word file template into a memory stream, read it and replace some text, I would convert the stream writer to byte array which will be used to download the result. Thanks in advance
public byte[] GetWordFile()
{
try
{
string sourceFile = Path.Combine("C:/[...]/somefile.docx");
using (MemoryStream inStream = new MemoryStream())
{
using (Stream fs = File.Open(sourceFile, FileMode.Open, FileAccess.Read))
{
fs.CopyTo(inStream);
}
using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(inStream, true))
{
string docText = null;
using (StreamReader sr = new StreamReader(wordDoc.MainDocumentPart.GetStream()))
{
docText = sr.ReadToEnd();
}
docText = docText.Replace("numpol", "HAHAHHAHA");
using (MemoryStream outStream = new MemoryStream())
using (StreamWriter sw = new StreamWriter(wordDoc.MainDocumentPart.GetStream(FileMode.Create)))
{
sw.Write(docText);
sw.Flush();
sw.BaseStream.CopyTo(outStream);
outStream.Position = 0;
return outStream.ToArray();
}
}
}
}
catch (Exception ex)
{
///...
}
}
Currently, I was base on "Search and replace text in a document part (Open XML SDK)" on the Microsoft site. I've realized that the code got an issue after the file has downloaded to my drive.
So I opened that file and got a message
MEMORY STREAM IS NOT EXPANDABLE at sw.Write(docText);
How to fix that?
In GenerateDocxHelper class:
private readonly MemoryStream _mem;
private Dictionary<string, string> _dicData;
public GenerateDocxHelper(string path)
{
_mem = new MemoryStream(System.IO.File.ReadAllBytes(path));
_dicData = new Dictionary<string, string>();
}
public MemoryStream ReplaceTextInWord()
{
using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(_mem, true))
{
string docText = null;
using (StreamReader sr = new StreamReader(wordDoc.MainDocumentPart.GetStream()))
{
docText = sr.ReadToEnd();
}
foreach (var data in _dicData)
{
docText = docText.Replace(data.Key, data.Value);
}
using (StreamWriter sw = new StreamWriter(wordDoc.MainDocumentPart.GetStream(FileMode.Create)))
{
sw.Write(docText);
}
}
_mem.Seek(0, SeekOrigin.Begin);
return _mem;
}
You should create the MemoryStream with capacity = 0 which means it is resizeable,
and then add the bytes you have read from the file.
var allBytes = File.ReadAllBytes(path);
//this makes _mem resizeable
_mem = new MemoryStream(0);
_mem.Write(allBytes, 0, allBytes.Length);
Check this answer
When I execute the below code to save the word file following exception occurs.please help me to correct the issue.thanks.
Cannot get stream with FileMode.Create, FileMode.CreateNew, FileMode.Truncate, FileMode.Append when access is FileAccess.Read.
using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(path, false))
{
string docText = null;
using (StreamReader sr = new StreamReader(wordDoc.MainDocumentPart.GetStream()))
{
docText = sr.ReadToEnd();
}
//Regex regexText = new Regex("<var_Date>");
docText = docText.Replace("<var_Date>", DateTime.Now.ToString("MMM dd,yyyy"));
using (StreamWriter sw = new StreamWriter(wordDoc.MainDocumentPart.GetStream(FileMode.Create)))
sw.Write(docText);
}
Right here:
WordprocessingDocument.Open(path, false))
The second argument is isEditable, you passed false. So you've opened it as read-only.
Ref: https://msdn.microsoft.com/en-us/library/cc562234.aspx
Im a long time trying to solve one problem. I have one method that Serialize a string, follows the code:
XmlRetorno()
var algumasDef = new XmlWriterSettings {
Indent = true,
OmitXmlDeclaration = true
};
var nameSpace = new XmlSerializerNamespaces();
nameSpace.Add(string.Empty, "urn:sngpc-schema");
var meuXml = new XmlSerializer(GetType(), "urn:sngpc-schema");
using (var minhaString = new StringWriterWithEncoding(Encoding.GetEncoding("iso-8859-1"))) {
using (var escreve = XmlWriter.Create(minhaString, algumasDef)) {
meuXml.Serialize(escreve, this, nameSpace);
}
return minhaString.ToString();
}
Then, my next step is to compact that string to a zip file, my method to zip.
CompactXml()
string ziparEssaString = msg.XmlRetorno();
byte[] byteArray = new byte[ziparEssaString.Length];
int indexBA = 0;
foreach (char item in ziparEssaString.ToArray()) {
byteArray[indexBA++] = (byte)item;
}
//prepare to compress
using (MemoryStream ms = new MemoryStream()) {
using (GZipStream sw = new GZipStream(ms, CompressionMode.Compress)) {
sw.Write(byteArray, 0, byteArray.Length);
}
//transform bytes[] zip to string
byteArray = ms.ToArray();
StringBuilder sB = new StringBuilder(byteArray.Length);
foreach (byte item in byteArray) {
sB.Append((char)item);
}
return sB.ToString();
}
I need to compress a string that is formatted .xml and when I unpack I need the extension to be .xml too, my webservice return an error. Please, i need one light.