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Converting images from RGB to CMYK

Posted By:      Posted Date: April 14, 2011    Points: 0   Category :.NET Framework

Is there a way to convert images from RGB to CMYK? Thanks!

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Images in WPF

How to create a Thumbnail of an Image. How to automatically crop an image. The following method allows you to automatically crop an image to it's content.

Reading and Writing Images From a Windows Mobile Database using UltraLite 10(C#)

Periodically I get a request for information on how to read and write binary data to a database running on Windows Mobile. If you search the Internet you can typically find examples that are available on Windows Desktops or allow you to read and write to a local file system. The problem is that it can take a bit of work to get this code to work on Windows Mobile accessing a database.

Ultimately you might be asking, why would I want to store and image in a database? Well in an environment where you synchronizing data between a local mobile database and a consolidated (central) database this can be extremely useful. Imagine if an insurance adjuster went to an accident scene, took a picture of a damaged car, loaded it into his Windows Mobile database and then replicated that image up to the Insurance headquarters for approval. All of this could be done in a very short period of time when using images in the database. Another good example might be a doctor who was waiting for a patient chart to become available. If you could store the image in a database this chart could be sent down to the doctor's device once it became available.

For this article I am not going to get into how to synchronize the images to and from a remote and central database as this is typically fairly straightforward when using a data synchronization technologies like MobiLink

Save images to SQL CE

Storing binary objects (such as image, office document etc.) into database is a little cumbersome when it comes to retrieval. Hence the most commonly accepted way is only store the file path in the database, and to store the documents on a file share.

Store and Display Images from MS Access Database Using C#

There is only the difference of coding syntax to stream the binary data of image content type to upload it into MS Access Database using C#/VB in ASP.Net 2.0

Namespaces required:-
using System.Data.OleDb;

OleDb is used to connect the web site forms with MS Access Database using Microsoft.Jet.OLEDB.4.0

Open File Print File Excel

Batch print many Excel files without having to open each one at a time. Quickly print mass amounts of xls files at once with this program. You must have Excel installed on your machine..

The Free Barcode Creator produces barcode images one at a time, and allows easy saving to a file or

The Free Barcode Creator produces barcode images one at a time, and allows easy saving to a file or pasting into an application. 2D versions are also available:

Browsing all Images in Directory ... ?! asp.net & C#


Hi every one ... How are you ??

OK ... I want to make album ... I try to make it using buttons( next & pre ) using imageButton control and variable (i)

So ... each next (++i) & pre ( --i) to show allimages in directory ("photo")

Here my code in C#  ::

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
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 System.Xml.Linq;
using System.IO;
using System.Collections.Generic;

namespace iThinkerWebSite
    public partial class photos : System.Web.UI.Page

       // LinkedList<string> names = admin.getNames();
        DirectoryInfo dir;
        FileInfo[] files;
        static int i = -1;
        static int l = 0;

        protected void Page_Load(object sender, EventArgs e)
            dir = new DirectoryInfo(MapPath("photo"));
            files = dir.GetFiles();
            //l = (int)names.LongCount();
            l = files.Length;
            if (l == 0)
                Label2.Text = "No Photo to Display !!";
            Image2.ImageUrl = "images/ith.png";

Displaying Dicom images..........



Please guide

  1. How to display Dicom images in .net web apllications.
  2. How can i convert Dicom images to Jpeg.
  3. Can uplease provide me with a sample web application??

WebMatrix conversion failed when converting from a character string to uniqueidentifier?


I am trying to retrieve xml from a small function in my .cshtml page. Its throwing me an error. This however, runs fine in a console/form environment.

It takes 3 parameters and 1 exception.

myDll.GetXML(year, username, uniqueidentifier, out ex);

When I run this page I get the error, "Conversion failed when converting from a character string to uniqueidentifier."

Or a stack of.

System.Data.SqlClient.SqlException (0x80131904): Conversion failed when converting from a character string to uniqueidentifier.

   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)

   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)

   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()

   at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)

   at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()

   at System.Data.SqlClient.SqlDataReader.get_MetaData()

   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)

   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBeha

css and images gone on url rewriting


 I have a program which rewrites a url to a form     website.com/Default.aspx/name/articleid

The Program works fine ,but after URL rewriting my css sheet and images are gone . 

I am new to this and I have read that I should map my css and images to root. 

So ,I hav done some change to the path files of css and images but it stilll doesnt work .

Plz help me over this ...... 

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="TBV.aspx.cs" Inherits="TBV" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Article Page</title>
    <link rel="index" href="~/" title="Home" />
    <link rel="Stylesheet" media="screen,projection" type="text/css" href="~/css/main.css" />
    <link rel="stylesheet" media="print" type="text/css" href="~/css/print.css" />
    <link rel="stylesheet"

image.save not saving images


I have a piece of code that writes string into an image and save it. It works on one of my site and but not the other. The image.save is not working. If this is a permission problem, which account should I change? I use win server 2003 and IIS 6, and have given ASPNET, NETWORK SERVICE, and anonymous user write access.

Converting ReportDocument object into byte array ?


Hi All,

          Is it possible to convert the Report Document object as a byte array and store it in SQL , later retrieve and assing it to a report ?


Problems converting VS 2003 project to VS 2008



I'm having problems converting a VS 2003 project to VS 2008 (tried 2005 as well, same problem). There are several problems;
a) I don't have VS 2003 installed.
b) The project is a web service, however I'm not sure what type of VS project it was created as.
c) The general knowledge about the project setup is..slim.

I get a error message using the conversion wizard, however, I'm not familiar with the tool and I cannot quite find any good information on Google for it, so I am left with a error message I do not understand.

Conversion Issues - myProject.csproj:
Unable to open the Web site 'C:\local\path\to\project\myProject.csproj'. The Web site 'C:\local\path\to\project\myProject.csproj' does not exist.

The web service is not intended to run on the dev machine, it is copied to a test or a prod server. However, I do not know how this was done previously. I'm thinking that in order to convert, it has to access the server on which it should run (which is set somehow in a config maybe). But that doesn't actually make any sence..

If anyone could shed light on this, I would really appreciate it.

Thank you.

Converting Time formats


Hi guys,

So ive been converting an asp website to asp.net. What i did was run the migration wizard in the old VS2003, then when importing it bk into vs2008, i belive it upgraded it agin. I have been plodding along correcting basic erros and have come stuck with this one. Originallany the site has two input types, one for date and one for time. the new script is below with error im getting. I manged to get the date correct but the time is more tricky. Any suggestions would be appreciated.



Date = FormatdateTime(IIF(IsDBNull(MyRs1.Fields.Item("").Value), Nothing, MyRs1.Fields.Item("").Value), DateFormat.ShortDate)

Time = FormatdateTime(IIF(IsDBNull(MyRs1.Fields.Item("").Value), Nothing, MyRs1.Fields.Item("").Value), DateFormat.ShortTime)


Exception Details: System.InvalidCastException: Conversion from type 'Double' to type 'Date' is not valid.

Source Error:

Line 74: 
Line 75: 'TODO Need to correct the format 
Line 76:   Time= FormatDateTime(IIf(IsDBNull(MyRs1.Fields.Item("").Value), Nothing, MyR

Help converting vbscript to vb.net


Can anyone help me convert the below vbscript to vb.net:


On Error Resume Next

Dim sRunTime,sSitupCount,sPushupCount,sRunMin,sRunSec,sRunScore,sCompScore,sBodyComp
Dim iCompositeScore

Set oRE = New RegExp

sRunTime = InputBox("Enter your run time")
oRE.Pattern = "[0-5][0-9]:[0-5][0-9]"

If oRE.Test(sRunTime) = True Then
 WScript.Echo "Pattern Match"
 MsgBox "You must enter a valid run time in the following format: ""mm:ss""." & vbCr & "Please run the application again."
End If

sRunMin = Left(sRunTime,InStr(sRunTime,":")-1)
sRunSec = Right(sRunTime,InStr(sRunTime,":")-1)

sBodyComp = InputBox("Enter your waiste measurement")
oRE.Pattern = "[2-6][0-9].[0,5]"

If Len(sBodyComp) = 2 Then
 sBodyComp = sBodyComp + ".0"
End If

If oRE.Test(sBodyComp) = True Then
 WScript.Echo "Pattern Match"
 MsgBox "You must enter a waiste measurement in the following format: ""nn.n""." & vbCr & "Please run the application again."
End If

sSitupCount = InputBox

Converting from PHP to ASP


Dear all friends

 Hi to you all. I am now looking for not only your help but als your advices and suggestions to my situation.

here is the url of my current running PHP server http://www.yarnxchange.com/index.php

FIrst things I wish to know is which asp controls can replace the current PHP ones to act the same way

1.  In the top of the page the Latest news (News Ticker).

2. Under the banner logo the black line has a streamer that read data from database and view them in sme way like marquee and when roll over it stops and when click i can go to the details page.

3. In the bottom page The Yarn offers section . it shows data from mutiple tables but in the same place when click each item it displays the rows of its table in the right section . I think that there is a way or a data controller that can act the same way I wish your advice.

For sure after that I wish to know your ideas , recommendations and advices to make the full conversion in the best way

C# to VB: Converting to Boolean


I am converting some C# code to VB, the following code is part of a function

if (bool.Parse(v["Parent"].ToString()))
e.Row.CssClass = "Parent";

V is System.Data.DataRowView When I convert this to.

If Boolean.Parse(v("Parent").ToString()) Then
	e.Row.CssClass = "Parent"
End If

The code throws an error "String was not recognized as a valid Boolean" But if I use this code

If CBool(v("Parent").ToString) = True Then
e.Row.CssClass = "Parent"
End If

It works fine, which is great, I am just curious why?

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