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How can i edit a cell from the datgridview?

I have asked this question yesterday and i didn't get good response. i am working on a resx file. I have read the file and load it on data-gridview. now i wanted to be able to edit from the file and save.I have tried many ways but i didn't come with the solution. yesterday i tried this code below. I don't know how i can edit. please help me.
private void btnSave_Click(object sender, EventArgs e)
{
foreach (DataGridViewRow _row in Gridview_Output.Rows)
{
DataRow dt1 = oDataTable.NewRow();
for (int i = 0; i < Gridview_Output.ColumnCount; i++)
{
Gridview_Input.SelectedRows[0].Cells[1].Value = oDataSet.Tables["data"].Rows[0][1].ToString();
Gridview_Input.SelectedRows[0].Cells[2].Value = oDataSet.Tables["data"].Rows[0][2].ToString();
Gridview_Input.SelectedRows[0].Cells[3].Value = oDataSet.Tables["data"].Rows[0][3].ToString();
Gridview_Input.SelectedRows[0].Cells[4].Value = oDataSet.Tables["data"].Rows[0][4].ToString();
oDataTable.Rows.Add(dt1);
}
oDataSet.Tables.Add(oDataTable);
oDataSet.WriteXml(PathSelection);
}

This will help you almost the way you want it.
Code snippet from Modifying .resx file in c#
public static void UpdateResourceFile(Hashtable data, String path)
{
Hashtable resourceEntries = new Hashtable();
//Get existing resources
ResXResourceReader reader = new ResXResourceReader(path);
if (reader != null)
{
IDictionaryEnumerator id = reader.GetEnumerator();
foreach (DictionaryEntry d in reader)
{
if (d.Value == null)
resourceEntries.Add(d.Key.ToString(), "");
else
resourceEntries.Add(d.Key.ToString(), d.Value.ToString());
}
reader.Close();
}
//Modify resources here...
foreach (String key in data.Keys)
{
if (!resourceEntries.ContainsKey(key))
{
String value = data[key].ToString();
if (value == null) value = "";
resourceEntries.Add(key, value);
}
}
//Write the combined resource file
ResXResourceWriter resourceWriter = new ResXResourceWriter(path);
foreach (String key in resourceEntries.Keys)
{
resourceWriter.AddResource(key, resourceEntries[key]);
}
resourceWriter.Generate();
resourceWriter.Close();
}

How can I pass a function with one parameter to an ICommand?

Here's my ICommand:
public ICommand ConfirmLotSavedCommand {
get
{
return new RelayCommand(ConfirmLotSaved);
}
}
The problem is I have deserialized data that I want to store into database after a user clicks confirm button. If the user does not click on confirm or the lot number already exists, then I don't want to save the deserialized string in db.
I had trouble calling a function with one parameter inside my ConfirmLotSaved() method because of scope.
So I created a set the deserialized lot as a field and put the code to save to db inside of ConfirmLotSaved(). However, the field is null for some strange reason... I'm not sure why.
Here's my attempt:
private LotInformation lot; //field that is supposed to contain all the deserialized info
private void ConfirmLotSaved()
{
using (var db = new DDataContext())
{
bool lotNumDbExists = db.LotInformation.Any(r => r.lot_number == DeserialLotNumber);
if (lotNumDbExists == false)
{
successWindow.Message = "Successfully Saved Lot";
dialogService.ShowDialog(successWindow.Message, successWindow);
LotInformation newLot = new LotInformation();
if (newLot != null)
{
newLot.Id = lot.Id;
newLot.lot_number = lot.lot_number;
newLot.exp_date = lot.exp_date;
LotNumber = Lot.lot_number;
ExpirationDate = Lot.exp_date.ToString();
foreach (Components comp in lot.Components)
{
newLot.Components.Add(comp);
}
ComponentsList = newLot.Components;
foreach (Families fam in lot.Families)
{
newLot.Families.Add(fam);
}
FamiliesList = newLot.Families;
try
{
db.LotInformation.Add(newLot);
db.SaveChanges();
//Grabs the lot_number column from db that is distinct
var lotNum = db.LotInformation.GroupBy(i => i.lot_number).Select(group => group.FirstOrDefault());
//Loops through the lot numbers column in db and converts to list
foreach (var item in lotNum)
{
Console.WriteLine(item.lot_number);
}
LotNumList = lotNum.ToList();
Console.WriteLine("successfully");
}
catch
{
//TODO: Add a Dialog Here
}
}
else if (lotNumDbExists == true)
{
// Inform user that the lot_number already exists
errorWindow.Message = LanguageResources.Resource.Lot_Exists_Already;
dialogService.ShowDialog(LanguageResources.Resource.Error, errorWindow);
logger.writeErrLog(LanguageResources.Resource.Lot_Exists_Already);
return;
}
}
}
}
Deserialization function to see where lot is grabbing data:
public void DeserializedStream(string filePath)
{
XmlRootAttribute xRoot = new XmlRootAttribute();
xRoot.ElementName = "lot_information";
xRoot.IsNullable = false;
// Create an instance of lotinformation class.
LotInformation lot = new LotInformation();
// Create an instance of stream writer.
TextReader txtReader = new StreamReader(filePath);
// Create and instance of XmlSerializer class.
XmlSerializer xmlSerializer = new XmlSerializer(typeof(LotInformation), xRoot);
// DeSerialize from the StreamReader
lot = (LotInformation)xmlSerializer.Deserialize(txtReader);
// Close the stream reader
txtReader.Close();
LotInformation newList = new LotInformation();
using (var db = new DDataContext())
{
bool isDuplicate = db.LotInformation.Any(r => r.lot_number == lot.lot_number);
if (newList != null && isDuplicate == false)
{
newList.Id = lot.Id;
newList.lot_number = lot.lot_number;
newList.exp_date = lot.exp_date;
DeserialLotNumber = newList.lot_number;
DeserialExpirationDate = newList.exp_date.ToString();
foreach (Component comp in lot.Components)
{
newList.Components.Add(comp);
}
DeserialComponentsList = newList.Components;
foreach (Families fam in lot.Families)
{
newList.Families.Add(fam);
}
DeserialFamiliesList = newList.Families;
}
else if (isDuplicate == true)
{
DeserialAnalytesList = null;
DeserialFamiliesList = null;
// Inform user that the lot_number already exists
errorWindow.Message = LanguageResources.Resource.Lot_Exists_Already;
dialogService.ShowDialog(LanguageResources.Resource.Error, errorWindow);
logger.writeErrLog(LanguageResources.Resource.Lot_Exists_Already);
return;
}
}
}

I figured out what was wrong:
After setting private LotInformation lot; field before constructor, I redeclared locally my mistake:
LotInformation lot = new LotInformation();
Changed it to:
lot = new LotInformation();
and it works.

I suggest you to use RelayCommand's generic edition http://www.kellydun.com/wpf-relaycommand-with-parameter/
It will allow you to pass lot to your command from view, all you need to store lot in current DataContext.

Control validation against XmlSchemaSimpleTypeRestriction.Facets

I have a a desktop application with a System.Windows.Form containing some TextBox controls. I need to validate the control values against restrictions of an xml schema.
For each TextBox I can retrieve the relevant XmlSchemaSimpleTypeRestriction from its type and then use a method as follows to validate its value:
public static bool Validate(XmlSchemaSimpleTypeRestriction restriction, string value)
{
bool isENum = false;
bool isValidEnum = false;
foreach (var item in restriction.Facets)
{
XmlSchemaLengthFacet lengthFacet = item as XmlSchemaLengthFacet;
if (lengthFacet != null)
{
int length = Int32.Parse(lengthFacet.Value);
if (!(value.Length == length))
return false;
}
XmlSchemaMinLengthFacet minLenghtFacet = item as XmlSchemaMinLengthFacet;
if (minLenghtFacet != null)
{
int length = Int32.Parse(minLenghtFacet.Value);
if (!(value.Length >= length))
return false;
}
XmlSchemaMaxLengthFacet maxLenghtFacet = item as XmlSchemaMaxLengthFacet;
if (maxLenghtFacet != null)
{
int length = Int32.Parse(maxLenghtFacet.Value);
if (!(value.Length <= length))
return false;
}
XmlSchemaPatternFacet patternFacet = item as XmlSchemaPatternFacet;
if (patternFacet != null)
{
Regex re = new Regex(patternFacet.Value);
if (!re.IsMatch(value))
return false;
}
XmlSchemaEnumerationFacet enumFacet = item as XmlSchemaEnumerationFacet;
if (patternFacet != null)
{
isENum = true;
if (StringComparer.InvariantCultureIgnoreCase.Compare(value, enumFacet.Value) == 0)
isValidEnum = true;
}
if (isENum && (!isValidEnum))
return false;
return true;
}
I am going to use this method in the Validating event of the controls. Is there any simpler way of doing this?

Ok, it's a little more complicated than I initially thought. Basically, you need create an XmlSchema that expects a single element with the provided restriction. Then you create an XML element with the provided value and validate it against the schema using an XmlReader:
public static bool Validate(XmlSchemaSimpleTypeRestriction restriction, string value)
{
var schema = new XmlSchema();
schema.Items.Add(new XmlSchemaElement
{
Name = "value",
SchemaType = new XmlSchemaSimpleType { Content = restriction }
});
var schemaSet = new XmlSchemaSet();
schemaSet.Add(schema);
var readerSettings = new XmlReaderSettings
{
ValidationType = ValidationType.Schema,
ValidationFlags = XmlSchemaValidationFlags.ReportValidationWarnings,
Schemas = schemaSet
};
string xml = new XElement("value", value).ToString();
try
{
var reader = XmlReader.Create(new StringReader(xml), readerSettings);
while (reader.Read()) ;
return true;
}
catch (XmlSchemaValidationException)
{
return false;
}
}
I tested it with this code:
static void Main(string[] args)
{
var restriction = new XmlSchemaSimpleTypeRestriction { BaseTypeName = new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema") };
restriction.Facets.Add(new XmlSchemaMinLengthFacet { Value = "3" });
Console.WriteLine(Validate(restriction, "str"));
}

Extract text from a XPS Document [closed]

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i need to extract the text of a specific page from a XPS document.
The extracted text should be written in a string. I need this to read out the extracted text using Microsofts SpeechLib.
Please examples only in C#.
Thanks

Add References to ReachFramework and WindowsBase and the following using statement:
using System.Windows.Xps.Packaging;
Then use this code:
XpsDocument _xpsDocument=new XpsDocument("/path",System.IO.FileAccess.Read);
IXpsFixedDocumentSequenceReader fixedDocSeqReader
=_xpsDocument.FixedDocumentSequenceReader;
IXpsFixedDocumentReader _document = fixedDocSeqReader.FixedDocuments[0];
IXpsFixedPageReader _page
= _document.FixedPages[documentViewerElement.MasterPageNumber];
StringBuilder _currentText = new StringBuilder();
System.Xml.XmlReader _pageContentReader = _page.XmlReader;
if (_pageContentReader != null)
{
while (_pageContentReader.Read())
{
if (_pageContentReader.Name == "Glyphs")
{
if (_pageContentReader.HasAttributes)
{
if (_pageContentReader.GetAttribute("UnicodeString") != null )
{
_currentText.
Append(_pageContentReader.
GetAttribute("UnicodeString"));
}
}
}
}
}
string _fullPageText = _currentText.ToString();
Text exists in Glyphs -> UnicodeString string attribute. You have to use XMLReader for fixed page.

Method that returns text from all pages (modified Amir:s code, hope that's ok):
/// <summary>
/// Get all text strings from an XPS file.
/// Returns a list of lists (one for each page) containing the text strings.
/// </summary>
private static List<List<string>> ExtractTextFromXps(string xpsFilePath)
{
var xpsDocument = new XpsDocument(xpsFilePath, FileAccess.Read);
var fixedDocSeqReader = xpsDocument.FixedDocumentSequenceReader;
if (fixedDocSeqReader == null)
return null;
const string UnicodeString = "UnicodeString";
const string GlyphsString = "Glyphs";
var textLists = new List<List<string>>();
foreach (IXpsFixedDocumentReader fixedDocumentReader in fixedDocSeqReader.FixedDocuments)
{
foreach (IXpsFixedPageReader pageReader in fixedDocumentReader.FixedPages)
{
var pageContentReader = pageReader.XmlReader;
if (pageContentReader == null)
continue;
var texts = new List<string>();
while (pageContentReader.Read())
{
if (pageContentReader.Name != GlyphsString)
continue;
if (!pageContentReader.HasAttributes)
continue;
if (pageContentReader.GetAttribute(UnicodeString) != null)
texts.Add(pageContentReader.GetAttribute(UnicodeString));
}
textLists.Add(texts);
}
}
xpsDocument.Close();
return textLists;
}
Usage:
var txtLists = ExtractTextFromXps(#"C:\myfile.xps");
int pageIdx = 0;
foreach (List<string> txtList in txtLists)
{
pageIdx++;
Console.WriteLine("== Page {0} ==", pageIdx);
foreach (string txt in txtList)
Console.WriteLine(" "+txt);
Console.WriteLine();
}

private string ReadXpsFile(string fileName)
{
XpsDocument _xpsDocument = new XpsDocument(fileName, System.IO.FileAccess.Read);
IXpsFixedDocumentSequenceReader fixedDocSeqReader
= _xpsDocument.FixedDocumentSequenceReader;
IXpsFixedDocumentReader _document = fixedDocSeqReader.FixedDocuments[0];
FixedDocumentSequence sequence = _xpsDocument.GetFixedDocumentSequence();
string _fullPageText="";
for (int pageCount = 0; pageCount < sequence.DocumentPaginator.PageCount; ++pageCount)
{
IXpsFixedPageReader _page
= _document.FixedPages[pageCount];
StringBuilder _currentText = new StringBuilder();
System.Xml.XmlReader _pageContentReader = _page.XmlReader;
if (_pageContentReader != null)
{
while (_pageContentReader.Read())
{
if (_pageContentReader.Name == "Glyphs")
{
if (_pageContentReader.HasAttributes)
{
if (_pageContentReader.GetAttribute("UnicodeString") != null)
{
_currentText.
Append(_pageContentReader.
GetAttribute("UnicodeString"));
}
}
}
}
}
_fullPageText += _currentText.ToString();
}
return _fullPageText;
}

Full Code of Class:
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Xps.Packaging;
namespace XPS_Data_Transfer
{
internal static class XpsDataReader
{
public static List<string> ReadXps(string address, int pageNumber)
{
var xpsDocument = new XpsDocument(address, System.IO.FileAccess.Read);
var fixedDocSeqReader = xpsDocument.FixedDocumentSequenceReader;
if (fixedDocSeqReader == null) return null;
const string uniStr = "UnicodeString";
const string glyphs = "Glyphs";
var document = fixedDocSeqReader.FixedDocuments[pageNumber - 1];
var page = document.FixedPages[0];
var currentText = new List<string>();
var pageContentReader = page.XmlReader;
if (pageContentReader == null) return null;
while (pageContentReader.Read())
{
if (pageContentReader.Name != glyphs) continue;
if (!pageContentReader.HasAttributes) continue;
if (pageContentReader.GetAttribute(uniStr) != null)
currentText.Add(Dashboard.CleanReversedPersianText(pageContentReader.GetAttribute(uniStr)));
}
return currentText;
}
}
}
that return a list of string data from custom page of custom file.

C# Extract text from PDF using PdfSharp

Is there a possibility to extract plain text from a PDF-File with PdfSharp?
I don't want to use iTextSharp because of its license.

Took Sergio's answer and made some extension methods. I also changed the accumulation of strings into an iterator.
public static class PdfSharpExtensions
{
public static IEnumerable<string> ExtractText(this PdfPage page)
{
var content = ContentReader.ReadContent(page);
var text = content.ExtractText();
return text;
}
public static IEnumerable<string> ExtractText(this CObject cObject)
{
if (cObject is COperator)
{
var cOperator = cObject as COperator;
if (cOperator.OpCode.Name== OpCodeName.Tj.ToString() ||
cOperator.OpCode.Name == OpCodeName.TJ.ToString())
{
foreach (var cOperand in cOperator.Operands)
foreach (var txt in ExtractText(cOperand))
yield return txt;
}
}
else if (cObject is CSequence)
{
var cSequence = cObject as CSequence;
foreach (var element in cSequence)
foreach (var txt in ExtractText(element))
yield return txt;
}
else if (cObject is CString)
{
var cString = cObject as CString;
yield return cString.Value;
}
}
}

I have implemented it somehow similar to how David did it.
Here is my code:
...
{
// ....
var page = document.Pages[1];
CObject content = ContentReader.ReadContent(page);
var extractedText = ExtractText(content);
// ...
}
private IEnumerable<string> ExtractText(CObject cObject)
{
var textList = new List<string>();
if (cObject is COperator)
{
var cOperator = cObject as COperator;
if (cOperator.OpCode.Name == OpCodeName.Tj.ToString() ||
cOperator.OpCode.Name == OpCodeName.TJ.ToString())
{
foreach (var cOperand in cOperator.Operands)
{
textList.AddRange(ExtractText(cOperand));
}
}
}
else if (cObject is CSequence)
{
var cSequence = cObject as CSequence;
foreach (var element in cSequence)
{
textList.AddRange(ExtractText(element));
}
}
else if (cObject is CString)
{
var cString = cObject as CString;
textList.Add(cString.Value);
}
return textList;
}

PDFSharp provides all the tools to extract the text from a PDF. Use the ContentReader class to access the commands within each page and extract the strings from TJ/Tj operators.
I've uploaded a simple implementation to github.