Re: Build solution using NAnt - C# Discussion Boards

Re: List View search

Eduard Keilholz18-Jul-07 0:16

Eduard Keilholz

18-Jul-07 0:16

Next time, please ask your question in English...

loop through your listview items

<br />
foreach (ListViewItem itm in yourListView.Items)<br />
{<br />
// User regular expression to test if text matches<br />
if (match)<br />
itm.BackColor = Color.Red;<br />
}<br />

For regular expressions help, see This[^] website

.: I love it when a plan comes together :.
http://www.zonderpunt.nl

C#.net error: Attempt to read or write protected memory or often this is the indication that other memory is currupt

Rao Rafique17-Jul-07 22:44

Rao Rafique

17-Jul-07 22:44

the code that causes error is boldfaced...see below the inner most loop code.

private void toolStripButton3_Click(object sender, EventArgs e)
{
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// GDI+ still lies to us - the return format is BGR, NOT RGB.
///Cover Image Code
Bitmap bmp1 = new Bitmap(textBox1.Text); ///takes image from openfiledlg textbox1

///takes an object of BitmapData & apply LocBits()
BitmapData bmp1data = bmp1.LockBits(new Rectangle(0, 0, bmp1.Width, bmp1.Height), ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);
///finds out Bitmap's stride
int stride1 = bmp1data.Stride;
///defines pointer's to scan0 (1st byte of BimapData array
System.IntPtr Scan1 = bmp1data.Scan0;
///end of Cover Image Code
///////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

/// Stego Image code
Bitmap bmp2 = new Bitmap("f:\\bb.jpg");
BitmapData bmp2data = bmp2.LockBits(new Rectangle(0, 0, bmp2.Width, bmp2.Height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
int stride2 = bmp2data.Stride;
System.IntPtr Scan2 = bmp2data.Scan0;
unsafe
{
///unsafe stego code
byte* ptr2 = (byte*)(void*)Scan2;
int offset2 = stride2 - bmp2.Width * 3;
byte b2;
///end of unsafe stego
////////////////////////////////////////////////////////////////
///unsafe cover code
/// defines a byte type pointer to scan0
byte* ptr1 = null;
ptr1 = (byte*)(void*)Scan1;
/// finds offset of the BitmapData
int offset1 = stride1 - bmp1.Width * 3;
/// defines RGB values
byte b1,index=0;
bool bitt;
int x1, x2, y1, y2;

///iterates through the BitmapData
///end of unsafe cover code
////////////////////////////////////////////////////////////////
for (y2 = 0; y2 <= bmp2.Height; ++y2)
{

for (x2 = 0; x2 <= bmp2.Width; ++x2)
{
b2 = ptr2[0];

////embedding a bitt
for (y1 = 0; y1 <= bmp1.Height; y1++)
{
index = 0;
x1 = 0;
while(index<8 || x1<=bmp1.Width )
{
//////erroenous code
b1 = ptr1[0]; //gives error..access voilation
bitt = GetBit(b2, index);

/// sets LSB
ptr1[0] = SetBit(b1,6,bitt);
////end of erroneouscode //increments index by 1 ++index;
x1 = x1 + 1; ;
/// increments the pointers
ptr1 += 1;
} ///end of while
/// incremnets the pointer by offset value
ptr1 += offset1;
} ///end of outer for loop

}///3rd for loop

ptr2 += 1;
}//2nd for loop
ptr2 += offset2;
}//1st for loop

//end of unsafe1....
/// end of stego Image Code

bmp1.UnlockBits(bmp1data);
bmp2.UnlockBits(bmp2data);
/// Displays grayscale picture in picturebox.
pictureBox1.Image = bmp1;
///End of Embedding.....

}

I am getting B.S. degree in Computer Science.And want to enhance career in Software development.

Cannot implicitly convert type 'test.Str.StrEnumerator' to 'System.Collections.IEnumerator'. An explicit conversion exists (are you missing a cast?)

abhishek.mumbai17-Jul-07 22:42

abhishek.mumbai

17-Jul-07 22:42

Hi Chetan
Well i went through your code which was given in one of your articles
"Enumerating Objects in C#" posted on "8 May 2007". No doubt that the article is very easy to understand but Well when i run this code
it gave the following error

"the Cannot implicitly convert type 'test.Str.StrEnumerator' to 'System.Collections.IEnumerator'. An explicit conversion exists (are you missing a cast?)"

May you please tell me how to get rid of this?

Thanks and Regards
Abhishek
abhishek@entech.us

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;

namespace test
{
class Demo
{
public static void Main()
{
Str spp = new Str();
foreach (string i in spp)
System.Console.WriteLine(i);
}
}
class Str : IEnumerable // To impliment GetEnumerator method
{
string[] str_arr = new string[5] { "one", "two", "three", "four", "five" };
public IEnumerator GetEnumerator()
{
IEnumerator r = new StrEnumerator(this);
return r;
}
class StrEnumerator
{
int index;
Str sp;

public StrEnumerator(Str str_obj)
{
index = -1;
sp = str_obj;
}
public object Current
{
get
{
return sp.str_arr[index];
}
}
public bool MoveNext()
{
if (index < sp.str_arr.Length - 1)
{
index++;
return true;
}
return false;
}
public void Reset()
{
index = -1;
}
}
}
}

//error -- An explicit conversion exists (are you missing a cast?)

Abhishek
Mumbai

Re: Cannot implicitly convert type 'test.Str.StrEnumerator' to 'System.Collections.IEnumerator'. An explicit conversion exists (are you missing a cast?)

J4amieC17-Jul-07 23:09

J4amieC

17-Jul-07 23:09

abhishek.mumbai wrote:

class StrEnumerator : IEnumerator

---

How to get answers to your questions[^]

Re: Cannot implicitly convert type 'test.Str.StrEnumerator' to 'System.Collections.IEnumerator'. An explicit conversion exists (are you missing a cast?)

Colin Angus Mackay17-Jul-07 23:10

Colin Angus Mackay

17-Jul-07 23:10

Use the forum on the article page itself if you want to communicate with the author. There is no guarantee that the author will be reading this forum, but if you post on their article's forum then they will get an email to tell them a message exists.

Upcoming events:
* Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ...

"I wouldn't say boo to a goose. I'm not a coward, I just realise that it would be largely pointless."

My website

How do you know the current level of datagrid when nested

Muammar©17-Jul-07 22:33

Muammar©

17-Jul-07 22:33

Hello guys,
I have a datagrid control in which I have 2 relationships to make a 3 level nested datagrid, the problem is I need to know in what level I'm now, please save my a$$ as I'm in a mission now and have no time Cry | :((

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

Build solution using NAnt [modified]

deep717-Jul-07 22:31

deep7

17-Jul-07 22:31

I need to compile the solution written in windows application using C#.
My build file is as follows:

<?xml version="1.0" ?>
<project name="TestNANT" default="build" basedir=".">
<target name="build">
<solution solutionfile="TestNANT.sln" configuration="Release" >
</solution>
<property name="expected.output" value="bin/${configuration}/TestNANT.exe"/>
<fail unless="${file::exists(expected.output)}">Output file doesn't exist in ${expected.output}</fail>
</target>
</project>

when i execute 'nant' command in command prompt, i get the following error:

BUILD FAILED

Microsoft Visual Studio.NET 2005 solutions are not supported.

Total time: 0 seconds.

Could anyone please help me out here or tell me the correct way to write the script...

Thanks...
Deepa

-- modified at 5:15 Wednesday 18th July, 2007

Re: Build solution using NAnt

Scott Dorman18-Jul-07 7:24

Scott Dorman

18-Jul-07 7:24

This really isn't the right forum (or even the right site) to be posting an NAnt question.

That being said, the last time I used NAnt (about 6 months ago), the solution task did not support Visual Studio 2005 formatted solution or project files. The work around for this is to use the exec task and run devenv.exe or msbuild with the appropriate command line. I believe there was an actual msbuild task that is part of the NAnt Contrib project, but I'm not 100% sure.

-----------------------------
In just two days, tomorrow will be yesterday.

http://geekswithblogs.net/sdorman

C#.net error: Attempt to read or write protected memory or often this is the indication that other memory is currupt

Rao Rafique17-Jul-07 22:15

Rao Rafique

17-Jul-07 22:15

Hi Fellows:

I am facing an error of access voilation while running a piece of code with Unsafe Context...I am developing steganographic application.And I want to embedd DataImage into Cover image using LSB method with the help of Lockbits() and UnLockBits () methos..

But when I compile the code it is compiled & Build succesfully.But at run time the app. frozes and with the following error message for the statement.

<code>byte bb=ptr1[0] //where ptr1 is byte type pointer that points to Scan0 ,i.e 1st byte of locked image array. </code>

<b>Error :AccessVoilationUnhandelled exception</b>
Plateform :Visual C# Express edition VS.Net 2.0,Win XP

<b>Error Message:</b>
AcessVoilation: attempt to read or write protected memory.This is the oftenindication that other memeory is currupt.

also I am thanfull to Chorrina John...who write very helpful articles on Steganography...I request If she is there please help & Supervise me in my project.
Waiting for ur good response...
Thanks

I am getting B.S. degree in Computer Science.And want to enhance career in Software development.

Re: C#.net error: Attempt to read or write protected memory or often this is the indication that other memory is currupt

Guffa17-Jul-07 22:21

Guffa

17-Jul-07 22:21

Obviously ptr1 is not at all a pointer to a part of the image, but points somewhere else.

If you can show a bit more of the code, it might be possible to say anything more about it.

---
single minded; short sighted; long gone;

How to Export an Excel (xls) document that's compatible to all office versions - C#

OhrmaZd17-Jul-07 22:00

OhrmaZd

17-Jul-07 22:00

Hi everyone.
I have created an application that exports a new xls document, I did that using the com component "Microsoft Excel 9.0 object library" but of course that made my application dependant to this library. That shouldn't work on another client machine that don't have this version of Excel installed.
How can i make an application independent from my office. I mean it should be compatible with 'ALL' excel versions
any idea how to do this. and forget about the 'csv' format.
thanks

Re: How to Export an Excel (xls) document that's compatible to all office versions - C#

originSH17-Jul-07 22:12

originSH

17-Jul-07 22:12

http://blogs.iis.net/carlosag/archive/2005/08/27/Generating-Excel-Workooks-without-Excel.aspx[^]

Re: How to Export an Excel (xls) document that's compatible to all office versions - C#

DavieL17-Jul-07 22:30

DavieL

17-Jul-07 22:30

Hi, Im convinced i did this many years ago, but I cant find the code.
I did find this on Google Groups tho'

You can use the Microsoft OLE BD provider for Jet to dynamically
create an Excel workbook. Specifying a non-existent but valid path,
workbook name and Excel 'table' in a SELECT..INTO query results in it
being created.

Hope this helps

David

Re: How to Export an Excel (xls) document that's compatible to all office versions - C#

OhrmaZd17-Jul-07 23:47

OhrmaZd

17-Jul-07 23:47

thank you guys, I think both of your suggests might work, but the first one looks like used in a web app, and the second one is cool.
Though i haven't tried any. Coz I think i found what i wanted,
http://support.microsoft.com/kb/302902/[^]
go to 'late binding', it's working for now, there's the test stuff later.but so far it worked on two workstations with MSoffice 2003 and the other 2000.
Thanks a lot for your help though, and i might use one of these methods if the current one fails, if not it's still good knowledge for me and ppl who might face such problems.
thanks

Report problem

manoj_ce17-Jul-07 21:26

manoj_ce

17-Jul-07 21:26

I have 2 things in reportviewer but print only one.

First one is datafields and anotherone is Image or Text.

I want see both in reportviewer but print only datafields.

If u have any idea in any report like RDLC,Crystal Report .... and any one then replay me....

Please replay fast...

Thanks in Advance.....

Manoj Patel

Verify Certificate Revocation using x509chain offline check

suprajav17-Jul-07 20:52

suprajav

17-Jul-07 20:52

Hi All,

Hi,

I am developing a digital signature verification component in C# in .NET framework version 2.0.
In this verification I need to check the Certificate revocation status against a Offline CRL stored in a directory? I didnt find any api to initialize a CRL object or any examples to check revocation status?
Could some one please let me know how to use X509Chain object for offline CRL verification? I didnt find any examples. Or is there any other mechanism to do this checking?

Thanks-
Supraja

Setting Focus problem...

Dotnetkanna17-Jul-07 20:31

Dotnetkanna

17-Jul-07 20:31

Hi everyone..

My TreeView Structure is like this....

TextBox
|
|_Textbox1
|_Textbox2

and im having two Textboxes Name Textbox1 and TextBox2.
My need is on selecting or clicking the Textbox1 in the tree node
the focus should be set on the Textbox1 if i clicked any other node
means the focus should be set on the coressponding Textbox..How should i achieve it?

My code is below..
private void TV_AfterSelect(object sender, TreeViewEventArgs e)
{

Control[] ctrl = this.Controls.Find(TV.SelectedNode.Text, true);
if (ctrl.Length > 0) ((TextBox)ctrl[0]).Focus();

}

But i getting only just a blink in the textbox and the focus is not appear permanently..

Rgrds
Kanna..

.Net 2.0

razanabanu17-Jul-07 20:20

razanabanu

17-Jul-07 20:20

Hi friend,From Today Im going to work with Web Parts...Please let me know regarding to this...

Hi,Im Razana

Re: .Net 2.0

Michael Sync17-Jul-07 20:33

Michael Sync

17-Jul-07 20:33

What do you wanna know about Web Parts? If you have no idea about this, it is better if you google with the keywork "ASP.NET Web Parts"[^]

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

Re: .Net 2.0

Michael Sync17-Jul-07 20:34

Michael Sync

17-Jul-07 20:34

Plus, it would be the best if you ask in ASP.NET forum.. thank you!

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

Re: .Net 2.0

Sathesh Sakthivel17-Jul-07 20:36

Sathesh Sakthivel

17-Jul-07 20:36

Webparts[^]

Regards,

Satips. Rose | [Rose]

Don't walk in front of me, I may not follow;
Don't walk behind me, I may not lead;
Walk beside me, and just be my friend. - Albert Camus

Exporting crystal report in excel

Khushbu Patel17-Jul-07 20:20

Khushbu Patel

17-Jul-07 20:20

Sir,
My coding for exprting crystal report in excel is as below. I can get result very well in my pc. But i can't export it in web server. I think something is missing like patches or drivers which are required for crystal reports at web server. I am giving error description also ... pls reply me quickly.

Coding Part :

MemoryStream oStream;

Response.Clear();
Response.Buffer = true;
oStream = (MemoryStream)oRD.ExportToStream(ExportFormatType.Excel);
Response.ContentType = "application/vnd.ms-excel";

try
{
//write report to the Response stream
Response.BinaryWrite(oStream.ToArray());
Response.End();
}

catch (Exception ex)
{
strScript = "<script language=javascript>\n";
strScript += "\tstrShow='CMTL';strErr='Y';strValue = '";
strScript += Server.HtmlEncode(ex.Message.ToString());
strScript +="';\n";
strScript += "</script>\n";
RegisterStartupScript ("warning", strScript);
return;

}

finally
{
//clear stream
oStream.Flush();
oStream.Close();

}

Error part at web server :

Error Message: Error in File E:\NET_Portals\CMTL\Weekly_Reports\crpCommonFieldCom.rpt:
Error detected by export DLL:
Page Error Occurred: /cmtl/cmtl_concrete_field_com.aspx
ExceptionType: CrystalDecisions.CrystalReports.Engine.ExportException
Stack Trace: at '.'I(String , EngineExceptionErrorID )
at '.'D(Int16 , Int32 )
at '.'C(Int16 )
at CrystalDecisions.CrystalReports.Engine.FormatEngine.ExportToStream(ExportRequestContext reqContext)
at CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToStream(ExportFormatType formatType)
at CMTL_PROJECT.cmtl_concrete_field_com.btnGraph_Click(Object sender, EventArgs e) in f:\webdevelopment\cmtl_project\cmtl_concrete_field_com.aspx.cs:line 272
at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
at System.Web.UI.Page.ProcessRequestMain()

khushbu patel
Reliance Industries Limited,
Software Engineer,
Jamnagar.

multiline textbox problem

srinivassam17-Jul-07 20:07

srinivassam

17-Jul-07 20:07

hi i have multiline textbox i want 3 lines visible at a time , after typeing then i click on next button ,
it gives me Redirect URI cannot contain newline characters.

Whts the solution to this does anybody know....
this line is showing error
<pre>
Response.Redirect("survey.aspx?Count=" + Convert.ToInt32(i + 1)+ "&temp="+Session["Query"].ToString());
</pre>

srinivas

Re: multiline textbox problem

Vasudevan Deepak Kumar17-Jul-07 20:10

Vasudevan Deepak Kumar

17-Jul-07 20:10

Does your browser addressbar is multi-line enabled? It is an URL right?

See this discussion thread also at: http://www.dotnetspider.com/qa/Question19127.aspx[^]

Vasudevan Deepak Kumar
Personal Homepage
Tech Gossips

How do i know in which drive windows is installed

Iftekhar Naim17-Jul-07 18:42

Iftekhar Naim

17-Jul-07 18:42

i need to invoke a windows method. For this i call an exe file from windows\system32 directory. But i need to know in which drive winodws is installed. I think it is not wise to hard-code my code -"c:\windows\system32". So can any one tell me how do i know this path from my program in run time?

Thanks

Chayan

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.