I am exporting Outlook contacts with a custom form to CSV from a specific Contacts folder. This folder is not the default location. It is a large folder with almost 7,000 contacts. This is a shared mailbox in Office 365, but we can't use the Outlook or Graph APIs because of the custom data.
My code below works fine, except that after iterating through 200-800 contacts, I get this error: "RPC Server is unavailable. (Exception from HRESULT: 0x800706BA)."
I also tried exporting the folder to a .pst and accessing that folder on my local machine. The result is essentially the same. UPDATE: I've been watching Outlook.exe in the task manager, and it steadily increases its memory consumption to around 300MB before crashing. I've tried the same code on a laptop running Office 2010, and I get an "Out of Memory" error.
I get the error whether Outlook is open or closed, but closing Outlook during program operation will immediately trigger this error. Outlook either starts (or restarts) following this error. I've read a number of SO posts and articles related to this error, but I'm not sure exactly what's going on. Any help is appreciated.
UPDATE: Code has been updated to use for loops instead of foreach loops per Dmitry Streblechenko's suggestion.
using System;
using Microsoft.Office.Interop.Outlook;
using System.Text;
using System.IO;
using System.Runtime.InteropServices;
namespace OutlookContacts
{
class Program
{
static void Main(string[] args)
{
var encoding = Encoding.UTF8;
string csvPath = #"myCSVPath";
Application outlook = new Application();
NameSpace ns = outlook.GetNamespace("MAPI");
MAPIFolder sharedContacts;
string recipientName = "myEmail#myDomain";
StringBuilder headerRow = new StringBuilder();
Recipient recip = ns.CreateRecipient(recipientName);
StreamWriter writer = new StreamWriter(csvPath, false, encoding);
recip.Resolve();
if (recip.Resolved)
{
try
{
//EntryID and StoreID of my folder
sharedContacts =
ns.GetFolderFromID(
"myEntryID",
"myStoreID"
);
Items contacts = sharedContacts.Items;
//Writing header row
ContactItem first = contacts.GetFirst();
var properties = first.ItemProperties;
for(int i = 0; i < properties.Count; i++)
{
try
{
headerRow.Append(string.Format("\"{0}\",", properties[i].Name));
}
catch (System.Exception ex)
{
headerRow.Append(string.Format("{0},", ex.Message));
}
}
headerRow.AppendLine(Environment.NewLine);
WriteToCSV(writer, headerRow);
Console.WriteLine("Header row written;");
Marshal.ReleaseComObject(properties);
Marshal.ReleaseComObject(first);
//Writing Records
for (int i = 1; i <= contacts.Count; i++)
{
object o = contacts[i];
if (o is ContactItem)
{
ContactItem contact = (ContactItem)o;
if (contact != null)
{
Console.Write(contact.FullName);
StringBuilder dataRow = new StringBuilder();
ItemProperties contactProps = contact.ItemProperties;
for (int j = 0; j < contactProps.Count; j++)
{
ItemProperty property = contactProps[j];
try
{
if (property.Value == null)
{
string value = "null,";
dataRow.Append(value);
}
//else if (property.Name == "Attachments")
//{
// //Attachment file names
// string attachment = "";
// for (int k = 1; k < contact.Attachments.Count; k++)
// {
// attachment = (string.Format("\"{0}\"; ", contact.Attachments[k].FileName));
// dataRow.Append(attachment);
// }
// dataRow.Append(",");
//}
else
{
string value = property.Value.ToString();
value = value.Replace("\r\n\r\n\r\n", "\r\n")
.Replace("\r\n\r\n", "\r\n")
.Replace("\"", "'");
value = (string.Format("\"{0}\",", value));
dataRow.Append(value);
}
}
catch (System.Exception ex)
{
string value = string.Format("{0}: {1},", property.Name, ex.Message);
dataRow.Append(value);
}
Marshal.ReleaseComObject(property);
}
dataRow.Append(Environment.NewLine);
WriteToCSV(writer, dataRow);
Marshal.ReleaseComObject(contactProps);
Marshal.ReleaseComObject(contact);
}
Marshal.ReleaseComObject(o);
counter++;
Console.WriteLine(": Written " + counter);
}
}
}
catch (System.Exception ex)
{
Console.WriteLine(dataRow.ToString(), ex.Message);
Console.ReadKey();
}
}
}
static void WriteToCSV(StreamWriter writer, StringBuilder row)
{
var data = row.ToString();
writer.WriteAsync(data);
}
}
}
Looks like you are running out of RPC channels. You need to avoid using foreach loops (they tend to keep all collection members referenced until the loop exits) and explicitly release all COM objects are soon as you are done with them.
Off the top of my head:
for(int i = 1; i <= contacts.Count; i++)
{
obejct o = contacts[i];
ContactItem contact = o as ContactItem;
if (o != null)
{
ItemProperties properties = contact.ItemProperties;
StringBuilder newLine = new StringBuilder();
for (int j = 1; j <= properties.Count; j++)
{
ItemProperty property = properties[j];
var value = "";
if (property.Value == null)
{
value = "null,";
Console.WriteLine(value);
newLine.Append(value);
}
else
{
value = property.Value.ToString() + ",";
newLine.Append(value);
}
Marshal.ReleaseComObject(property);
}
newLine.Append(Environment.NewLine);
WriteToCSV(writer, newLine);
Marshal.ReleaseComObject(properties);
Marshal.ReleaseComObject(contact);
}
Marshal.ReleaseComObject(o);
}
Related
I am working on addin to Outlook 2013. I added custom field to MailItem and used AdvancedSearch to find item. The last missing part is showing the results.
How can I show results of custom search in search results?
private void Application_AdvancedSearchComplete(Outlook.Search SearchObject)
{
string dx = SearchObject.Tag;
int x = SearchObject.Results.Count;
//What next?
}
private void button1_Click(object sender, RibbonControlEventArgs e)
{
Object selObject = Globals.ThisAddIn.Application.ActiveExplorer().Selection[1];
Outlook.MailItem mail = selObject as Outlook.MailItem;
if (mail != null)
{
Outlook.UserProperties mailUserProperties = null;
Outlook.UserProperty mailUserProperty = null;
mailUserProperties = mail.UserProperties;
foreach (var i in mailUserProperties)
{
var xx = i;
}
mailUserProperty = mailUserProperties.Add("TestUserProperty", Outlook.OlUserPropertyType.olText, true);
mailUserProperty.Value = "Eugene Astafiev";
mail.Save();
}
string str = "http://schemas.microsoft.com/mapi/string/{00020329-0000-0000-C000-000000000046}/TestUserProperty LIKE '%ugene%'";
Outlook.MAPIFolder inbox = Globals.ThisAddIn.Application.Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);
Globals.ThisAddIn.Application.AdvancedSearch("Inbox", str, false, "TestUserProperty");
}
You cannot display the results of Application.AdvancedSearch. To show search results in the UI you will have to use Explorer.Search, which is effectively just automating the user performing the search in the UI. However, you will not get the results back in code to work with. See here for an overview of your options:
https://msdn.microsoft.com/en-us/library/ff869846.aspx
You can save results to a search folder and then display it to a user. The Save method of the Search class saves the search results to a Search Folder. Note, the Save method displays an error if a Search Folder with the same name already exists.
Outlook.Results advancedSearchResults = advancedSearch.Results;
if (advancedSearchResults.Count > 0)
{
if (HostMajorVersion > 10)
{
object folder = advancedSearch.GetType().InvokeMember("Save",
System.Reflection.BindingFlags.Instance |
System.Reflection.BindingFlags.InvokeMethod |
System.Reflection.BindingFlags.Public,
null, advancedSearch,
new object[] { advancedSearchTag });
}
else
{
strBuilder = new System.Text.StringBuilder();
strBuilder.AppendLine("Number of items found: " +
advancedSearchResults.Count.ToString());
for (int i = 1; i < = advancedSearchResults.Count; i++)
{
resultItem = advancedSearchResults[i]
as Outlook.MailItem;
if (resultItem != null)
{
strBuilder.Append("#" + i.ToString());
strBuilder.Append(" Subject: " + resultItem.Subject);
strBuilder.Append(" \t To: " + resultItem.To);
strBuilder.AppendLine(" \t Importance: " +
resultItem.Importance.ToString());
Marshal.ReleaseComObject(resultItem);
}
}
if (strBuilder.Length > 0)
System.Diagnostics.Debug.WriteLine(strBuilder.ToString());
else
System.Diagnostics.Debug.WriteLine(
"There are no Mail items found.");
}
}
else
{
System.Diagnostics.Debug.WriteLine("There are no items found.");
}
You may find the Advanced search in Outlook programmatically: C#, VB.NET article helpful.
I've been having a little weekend project for myselff which involves getting all my ToDo tasks from Outlook, put them in a DataGridView and me being able to edit and export them.
The only problem I've been running into is me being unable to get the task specific properties for flagged emails while they still exist, I just don't see any way to access them.
Here is a portion of my current code.
private void retrieveTasks()
{
//Clear datagrid so we won't have duplicate information
taskList.Rows.Clear();
//Define some properties so we can use these to retrieve the tasks
Outlook.Application app = null;
_NameSpace ns = null;
Store outlookStore = null;
Outlook.MAPIFolder taskFolder = null;
Outlook.MAPIFolder specialFolder = null;
TaskItem task = null;
DateTime nonDate = new DateTime(4501, 1, 1);
try
{
//Connect to Outlook via MAPI
app = new Outlook.Application();
ns = app.GetNamespace("MAPI");
ns.Logon(null, null, false, false);
/*
outlookStore = ns.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderInbox).Store;
taskFolder = outlookStore.GetSpecialFolder(Microsoft.Office.Interop.Outlook.OlSpecialFolders.olSpecialFolderAllTasks);
*/
//Get the taskfolder containing the Outlook tasks
//taskFolder = ns.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderTasks);
outlookStore = ns.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderInbox).Store;
taskFolder = outlookStore.GetSpecialFolder(OlSpecialFolders.olSpecialFolderAllTasks);
//Console.WriteLine(specialFolder.Items[1].Subject.ToString());
/*for (int i = 1; i <= specialFolder.Items.Count; i++)
{
//task = (Outlook.TaskItem)specialFolder.Items[i];
Console.WriteLine(specialFolder.Items[i].ToString());
}*/
for (int i = 1; i <= taskFolder.Items.Count; i++)
{
//Get task from taskfolder
Object item = taskFolder.Items[i];
if (item is Outlook.MailItem)
{
MailItem mail = (Outlook.MailItem)item;
if (mail.TaskCompletedDate.Equals(nonDate))
{
string percentComplete = "";
string taskPrio = "";
if (mail.UserProperties.Find("Prio") == null)
{
taskPrio = "";
}
else
{
taskPrio = mail.UserProperties.Find("Prio").Value.ToString();
}
//mail.UserProperties.
if (mail.UserProperties.Find("% Complete") == null)
{
percentComplete = "";
}
else
{
percentComplete = mail.UserProperties.Find("% Complete").Value.ToString();
}
//Add the tasks details to the datagrid
taskList.Rows.Add(
i.ToString(),
checkForNull(mail.Subject),
parseDate(mail.TaskStartDate.ToString()),
parseDate(mail.TaskDueDate.ToString()),
percentComplete, "Taak voltooid",
//statusToFriendlyName(mail.Status.ToString()),
taskPrio
);
}
}
else if (item is Outlook.TaskItem)
{
task = (Outlook.TaskItem)item;
Console.WriteLine(task.Subject);
if (task.Complete == false)
{
string taskPrio = "";
//Make sure custom task property is failed or set it to empty text to prevent crashes
if (task.UserProperties.Find("Prio") == null)
{
taskPrio = "";
}
else
{
taskPrio = task.UserProperties.Find("Prio").Value.ToString();
}
//Add the tasks details to the datagrid
taskList.Rows.Add(
i.ToString(),
task.Subject.ToString(),
parseDate(task.StartDate.ToString()),
parseDate(task.DueDate.ToString()),
task.PercentComplete.ToString(),
statusToFriendlyName(task.Status.ToString()),
taskPrio
);
}
}
}
}
catch (System.Runtime.InteropServices.COMException ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
//Release Outlook sources
ns = null;
app = null;
}
}
So specifically I am looking for the "% complete" property and the status property, everything else I am able to work around on.
It would make my life SO MUCH EASIER if I can get this to work :)
Hope to hear from anyone on here!
Jeffrey
Do you mean you need to retrieve the task specific properties from a MailItem object (as opposed to the TaskItem object)?
Take a look at the message with OutlookSpy (I am its author) - click IMessage button, look at the MAPI properties in the GetProps tab. Any property can be accessed using MailItem.PropertyAccessor.GetProperty. The DASL name to be used by GetProperty is displayed by OutlookSpy (select the property in the IMessage window, see the DASL edit box).
I want to read properties of MSI in C# in desktop application.I am using following code:
public static string GetMSIProperty( string msiFile, string msiProperty)
{
string retVal= string.Empty ;
Type classType = Type.GetTypeFromProgID("WindowsInstaller.Installer");
Object installerObj = Activator.CreateInstance(classType);
WindowsInstaller.Installer installer = installerObj as WindowsInstaller.Installer;
Database database = installer.OpenDatabase("C:\\DataP\\sqlncli.msi",0 );
string sql = String.Format("SELECT Value FROM Property WHERE Property=’{0}’", msiProperty);
View view = database.OpenView(sql);
Record record = view.Fetch();
if (record != null)
{
retVal = record.get_StringData(1);
}
else
retVal = "Property Not Found";
return retVal;
}
But I am getting error as System.Runtime.InteropServices.COMException was unhandled.
the sqlncli.msi file is physically placed at c:\DataP location. While debugging I found that database does not contain the data after installer.OpenDatabase() statement.
How can I resolve this issue and get MSI properties in C#?
Windows Installer XML's Deployment Tools Foundation (WiX DTF) is an Open Source project from Microsoft which includes the Microsoft.Deployment.WindowsInstaller MSI interop library. It's far easier and more reliable to use this to do these sorts of queries. It even has a LINQ to MSI provider that allows you to treat MSI tables as entities and write queries against them.
using System;
using System.Linq;
using Microsoft.Deployment.WindowsInstaller;
using Microsoft.Deployment.WindowsInstaller.Linq;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
using(var database = new QDatabase(#"C:\tfs\iswix.msi", DatabaseOpenMode.ReadOnly))
{
var properties = from p in database.Properties
select p;
foreach (var property in properties)
{
Console.WriteLine("{0} = {1}", property.Property, property.Value);
}
}
using (var database = new Database(#"C:\tfs\iswix.msi", DatabaseOpenMode.ReadOnly))
{
using(var view = database.OpenView(database.Tables["Property"].SqlSelectString))
{
view.Execute();
foreach (var rec in view) using (rec)
{
Console.WriteLine("{0} = {1}", rec.GetString("Property"), rec.GetString("Value"));
}
}
}
Console.Read();
}
}
}
I did it in following way:
String inputFile = #"C:\\Rohan\\sqlncli.msi";
// Get the type of the Windows Installer object
Type installerType = Type.GetTypeFromProgID("WindowsInstaller.Installer");
// Create the Windows Installer object
WindowsInstaller.Installer installer = (WindowsInstaller.Installer)Activator.CreateInstance(installerType);
// Open the MSI database in the input file
Database database = installer.OpenDatabase(inputFile, 0);
// Open a view on the Property table for the version property
View view = database.OpenView("SELECT * FROM _Tables");
// Execute the view query
view.Execute(null);
// Get the record from the view
Record record = view.Fetch();
while (record != null)
{
Console.WriteLine(record.get_StringData(0) + '=' + record.get_StringData(1) + '=' + record.get_StringData(2) + '=' + record.get_StringData(3));
record = view.Fetch();
}
And its working for me.
The SQL string is incorrect. It should be:
SELECT `Value` FROM `Property` WHERE `Property`.`Property` = ’{0}’
I was trying to re-use this code, and the only change I had to make to get the code posted by Devashri to work is this line:
string sql = String.Format("SELECT `Value` FROM `Property` WHERE `Property`='{0}'", msiProperty);
Watch out for the single quotes!
as of 04/2020 it would be
Type installerType { get; set; }
WindowsInstaller.Installer installerObj { get; set; }
...
installerType = Type.GetTypeFromProgID("WindowsInstaller.Installer");
installerObj = (WindowsInstaller.Installer)Activator.CreateInstance(installerType);
var installer = installerObj as WindowsInstaller.Installer;
...
private void lnkSelectMsi_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
WindowsInstaller.Database msiDatabase = installerObj.OpenDatabase(txtMsiPath.Text, 0);
readMsiTableColumn(msiDatabase, cmbTable.Text, cmbColumn.Text);
}
private void readMsiTableColumn(WindowsInstaller.Database msiDatabase, string table)
{
WindowsInstaller.View msiView = null;
Record record = null;
string s = string.Empty;
try
{
msiView = msiDatabase.OpenView($"Select * from _Columns");
msiView.Execute();
record = msiView.Fetch();
int k = 0;
while (record != null)
{
if (record.StringData[1].Equals(table, StringComparison.OrdinalIgnoreCase))
{
k++;
s += $"{record.StringData[3],-50} ";
}
record = msiView.Fetch();
}
s += nl;
s += "".PadRight(50 * k, '-') + nl;
msiView.Close();
msiView = msiDatabase.OpenView($"Select * from {table}");
msiView.Execute();
record = msiView.Fetch();
while (record != null)
{
string recordValue = string.Empty;
for (int i = 1; i < record.FieldCount + 1; i++)
{
try { recordValue += $"{record.StringData[i],-50} "; }
catch (Exception ex) { recordValue += $"{i}. err {ex.Message}; "; }
}
s += recordValue + nl;
record = msiView.Fetch();
}
msiView.Close();
txtRes.Text = s;
}
catch (Exception ex) { txtRes.Text = ex.Message; }
}
I ve been searching for a while and all that i ve seen some OCR library requests. I would like to know how to implement the purest, easy to install and use OCR library with detailed info for installation into a C# project.
If posible, I just wanna implement it like a usual dll reference...
Example:
using org.pdfbox.pdmodel;
using org.pdfbox.util;
Also a little OCR code example would be nice, such as:
public string OCRFromBitmap(Bitmap Bmp)
{
Bmp.Save(temppath, System.Drawing.Imaging.ImageFormat.Tiff);
string OcrResult = Analyze(temppath);
File.Delete(temppath);
return OcrResult;
}
So please consider that I'm not familiar to OCR projects and give me an answer like talking to a dummy.
Edit:
I guess people misunderstood my request. I wanted to know how to implement those open source OCR libraries to a C# project and how to use them. The link given as dup is not giving answers that I requested at all.
If anyone is looking into this, I've been trying different options and the following approach yields very good results. The following are the steps to get a working example:
Add .NET Wrapper for tesseract to your project. It can be added via NuGet package Install-Package Tesseract(https://github.com/charlesw/tesseract).
Go to the Downloads section of the official Tesseract project (https://code.google.com/p/tesseract-ocr/ EDIT: It's now located here: https://github.com/tesseract-ocr/langdata).
Download the preferred language data, example: tesseract-ocr-3.02.eng.tar.gz English language data for Tesseract 3.02.
Create tessdata directory in your project and place the language data files in it.
Go to Properties of the newly added files and set them to copy on build.
Add a reference to System.Drawing.
From .NET Wrapper repository, in the Samples directory copy the sample phototest.tif file into your project directory and set it to copy on build.
Create the following two files in your project (just to get started):
Program.cs
using System;
using Tesseract;
using System.Diagnostics;
namespace ConsoleApplication
{
class Program
{
public static void Main(string[] args)
{
var testImagePath = "./phototest.tif";
if (args.Length > 0)
{
testImagePath = args[0];
}
try
{
var logger = new FormattedConsoleLogger();
var resultPrinter = new ResultPrinter(logger);
using (var engine = new TesseractEngine(#"./tessdata", "eng", EngineMode.Default))
{
using (var img = Pix.LoadFromFile(testImagePath))
{
using (logger.Begin("Process image"))
{
var i = 1;
using (var page = engine.Process(img))
{
var text = page.GetText();
logger.Log("Text: {0}", text);
logger.Log("Mean confidence: {0}", page.GetMeanConfidence());
using (var iter = page.GetIterator())
{
iter.Begin();
do
{
if (i % 2 == 0)
{
using (logger.Begin("Line {0}", i))
{
do
{
using (logger.Begin("Word Iteration"))
{
if (iter.IsAtBeginningOf(PageIteratorLevel.Block))
{
logger.Log("New block");
}
if (iter.IsAtBeginningOf(PageIteratorLevel.Para))
{
logger.Log("New paragraph");
}
if (iter.IsAtBeginningOf(PageIteratorLevel.TextLine))
{
logger.Log("New line");
}
logger.Log("word: " + iter.GetText(PageIteratorLevel.Word));
}
} while (iter.Next(PageIteratorLevel.TextLine, PageIteratorLevel.Word));
}
}
i++;
} while (iter.Next(PageIteratorLevel.Para, PageIteratorLevel.TextLine));
}
}
}
}
}
}
catch (Exception e)
{
Trace.TraceError(e.ToString());
Console.WriteLine("Unexpected Error: " + e.Message);
Console.WriteLine("Details: ");
Console.WriteLine(e.ToString());
}
Console.Write("Press any key to continue . . . ");
Console.ReadKey(true);
}
private class ResultPrinter
{
readonly FormattedConsoleLogger logger;
public ResultPrinter(FormattedConsoleLogger logger)
{
this.logger = logger;
}
public void Print(ResultIterator iter)
{
logger.Log("Is beginning of block: {0}", iter.IsAtBeginningOf(PageIteratorLevel.Block));
logger.Log("Is beginning of para: {0}", iter.IsAtBeginningOf(PageIteratorLevel.Para));
logger.Log("Is beginning of text line: {0}", iter.IsAtBeginningOf(PageIteratorLevel.TextLine));
logger.Log("Is beginning of word: {0}", iter.IsAtBeginningOf(PageIteratorLevel.Word));
logger.Log("Is beginning of symbol: {0}", iter.IsAtBeginningOf(PageIteratorLevel.Symbol));
logger.Log("Block text: \"{0}\"", iter.GetText(PageIteratorLevel.Block));
logger.Log("Para text: \"{0}\"", iter.GetText(PageIteratorLevel.Para));
logger.Log("TextLine text: \"{0}\"", iter.GetText(PageIteratorLevel.TextLine));
logger.Log("Word text: \"{0}\"", iter.GetText(PageIteratorLevel.Word));
logger.Log("Symbol text: \"{0}\"", iter.GetText(PageIteratorLevel.Symbol));
}
}
}
}
FormattedConsoleLogger.cs
using System;
using System.Collections.Generic;
using System.Text;
using Tesseract;
namespace ConsoleApplication
{
public class FormattedConsoleLogger
{
const string Tab = " ";
private class Scope : DisposableBase
{
private int indentLevel;
private string indent;
private FormattedConsoleLogger container;
public Scope(FormattedConsoleLogger container, int indentLevel)
{
this.container = container;
this.indentLevel = indentLevel;
StringBuilder indent = new StringBuilder();
for (int i = 0; i < indentLevel; i++)
{
indent.Append(Tab);
}
this.indent = indent.ToString();
}
public void Log(string format, object[] args)
{
var message = String.Format(format, args);
StringBuilder indentedMessage = new StringBuilder(message.Length + indent.Length * 10);
int i = 0;
bool isNewLine = true;
while (i < message.Length)
{
if (message.Length > i && message[i] == '\r' && message[i + 1] == '\n')
{
indentedMessage.AppendLine();
isNewLine = true;
i += 2;
}
else if (message[i] == '\r' || message[i] == '\n')
{
indentedMessage.AppendLine();
isNewLine = true;
i++;
}
else
{
if (isNewLine)
{
indentedMessage.Append(indent);
isNewLine = false;
}
indentedMessage.Append(message[i]);
i++;
}
}
Console.WriteLine(indentedMessage.ToString());
}
public Scope Begin()
{
return new Scope(container, indentLevel + 1);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
var scope = container.scopes.Pop();
if (scope != this)
{
throw new InvalidOperationException("Format scope removed out of order.");
}
}
}
}
private Stack<Scope> scopes = new Stack<Scope>();
public IDisposable Begin(string title = "", params object[] args)
{
Log(title, args);
Scope scope;
if (scopes.Count == 0)
{
scope = new Scope(this, 1);
}
else
{
scope = ActiveScope.Begin();
}
scopes.Push(scope);
return scope;
}
public void Log(string format, params object[] args)
{
if (scopes.Count > 0)
{
ActiveScope.Log(format, args);
}
else
{
Console.WriteLine(String.Format(format, args));
}
}
private Scope ActiveScope
{
get
{
var top = scopes.Peek();
if (top == null) throw new InvalidOperationException("No current scope");
return top;
}
}
}
}
Here's one: (check out http://hongouru.blogspot.ie/2011/09/c-ocr-optical-character-recognition.html or http://www.codeproject.com/Articles/41709/How-To-Use-Office-2007-OCR-Using-C for more info)
using MODI;
static void Main(string[] args)
{
DocumentClass myDoc = new DocumentClass();
myDoc.Create(#"theDocumentName.tiff"); //we work with the .tiff extension
myDoc.OCR(MiLANGUAGES.miLANG_ENGLISH, true, true);
foreach (Image anImage in myDoc.Images)
{
Console.WriteLine(anImage.Layout.Text); //here we cout to the console.
}
}
I'm using tesseract OCR engine with TessNet2 (a C# wrapper - http://www.pixel-technology.com/freeware/tessnet2/).
Some basic code:
using tessnet2;
...
Bitmap image = new Bitmap(#"u:\user files\bwalker\2849257.tif");
tessnet2.Tesseract ocr = new tessnet2.Tesseract();
ocr.SetVariable("tessedit_char_whitelist", "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.,$-/#&=()\"':?"); // Accepted characters
ocr.Init(#"C:\Users\bwalker\Documents\Visual Studio 2010\Projects\tessnetWinForms\tessnetWinForms\bin\Release\", "eng", false); // Directory of your tessdata folder
List<tessnet2.Word> result = ocr.DoOCR(image, System.Drawing.Rectangle.Empty);
string Results = "";
foreach (tessnet2.Word word in result)
{
Results += word.Confidence + ", " + word.Text + ", " + word.Left + ", " + word.Top + ", " + word.Bottom + ", " + word.Right + "\n";
}
Some online API's work pretty well: ocr.space and Google Cloud Vision. Both of these are free, as long as you do less than 1000 OCR's per month. You can drag & drop an image to do a quick manual test to see how they perform for your images.
I find OCR.space easier to use (no messing around with nuget libraries), but, for my purpose, Google Cloud Vision provided slightly better results than OCR.space.
Google Cloud Vision example:
GoogleCredential cred = GoogleCredential.FromJson(json);
Channel channel = new Channel(ImageAnnotatorClient.DefaultEndpoint.Host, ImageAnnotatorClient.DefaultEndpoint.Port, cred.ToChannelCredentials());
ImageAnnotatorClient client = ImageAnnotatorClient.Create(channel);
Image image = Image.FromStream(stream);
EntityAnnotation googleOcrText = client.DetectText(image).First();
Console.Write(googleOcrText.Description);
OCR.space example:
string uri = $"https://api.ocr.space/parse/imageurl?apikey=helloworld&url={imageUri}";
string responseString = WebUtilities.DoGetRequest(uri);
OcrSpaceResult result = JsonConvert.DeserializeObject<OcrSpaceResult>(responseString);
if ((!result.IsErroredOnProcessing) && !String.IsNullOrEmpty(result.ParsedResults[0].ParsedText))
return result.ParsedResults[0].ParsedText;
A new API is OcrEngine.RecognizeAsync from WinRT/UWP. It can also be used in WinForms:
...
//for AsBuffer
using System.Runtime.InteropServices.WindowsRuntime;
...
async private void button5_Click(object sender, EventArgs e)
{
OcrEngine ocrEngine = null;
ocrEngine = OcrEngine.TryCreateFromUserProfileLanguages();
if (ocrEngine == null) return;
//convert the image to BGRA8 format which is needed by SoftwareBitmap
//is there a better method for this?
Bitmap img = new Bitmap(#"1.png");
byte[] ba = new byte[img.Width * img.Height * 4];
int o = 0;
for (int y = 0; y < img.Height; y++)
{
for (int x = 0; x < img.Width; x++)
{
var p = img.GetPixel(x, y);
ba[o++] = p.B;
ba[o++] = p.G;
ba[o++] = p.R;
ba[o++] = p.A;
}
}
var buffer = ba.AsBuffer();
var outputBitmap = SoftwareBitmap.CreateCopyFromBuffer(
buffer,
BitmapPixelFormat.Bgra8,
img.Width,
img.Height);
var ocrResult = await ocrEngine.RecognizeAsync(outputBitmap);
}
To use WinRT/UWP API in WinForms, add Nuget package "Microsoft.Windows.SDK.Contracts" (version 10.0.17134.100 for Win10 1803 SDK tested here) as described here.
I have the following code to enumerate all the email address of my contacts but I am not able to do so with the exception point at this line
Outlook.ContactItem oAppt = (Outlook.ContactItem)oItems;
Could someone help me out so that I can enumerate all the email address of my contacts in Microsoft outlook ?
namespace RetrieveContacts
{
public class Class1
{
public static int Main(string[] args)
{
try
{
Outlook.Application oApp = new Outlook.Application();
Outlook.NameSpace oNS = oApp.GetNamespace("mapi");
Outlook.MAPIFolder oContacts = oNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderContacts);
Outlook.Items oItems = oContacts.Items;
Outlook.ContactItem oAppt = (Outlook.ContactItem)oItems;
for (int i = 0; i <= oItems.Count; i++)
{
System.IO.StreamWriter file = new System.IO.StreamWriter("C:\\EmailAddress.txt");
file.WriteLine(oAppt.Email1Address);
file.Close();
}
oNS.Logoff();
oAppt = null;
oItems = null;
oContacts = null;
oNS = null;
oApp = null;
}
catch (Exception e)
{
System.IO.StreamWriter file = new System.IO.StreamWriter("C:\\Exception.txt");
file.WriteLine(e);
file.Close();
}
return 0;
}
}
}
Without knowing Outlook's object model by heart I'd guess that Outlook.Items is a collection of ContactItems and thus cannot directly be cast to a single ContactItem. Other concerns:
You're creating and writing to your file within the loop, so it would get overwritten each time
You need to validate that the item is a ContactItem or your cast will throw an error.
the file access should be in a using block so it gets closed automatically if an Exception is thrown
Your for loop is going from 0 to Count when it should be going from 0 to Count-1 if the collection is 0-based
Try changing your loop to something like this:
Outlook.Items oItems = oContacts.Items;
using(System.IO.StreamWriter file = new System.IO.StreamWriter("C:\\EmailAddress.txt"))
{
for (int i = 0; i < oItems.Count; i++) // Note < instead of <=
{
// Will be null if oItems[i] is not a ContactItem
Outlook.ContactItem oAppt = oItems[i] as Outlook.ContactItem;
if(oAppt != null)
file.WriteLine(oAppt.Email1Address);
}
}
file.Close();
oNS.Logoff();