Comments by rajesh@1989 (Top 50 by date)

Thank you Laurence!! and many many thank to Jonas
I got the solution...by using Jonas answer http://stackoverflow.com/questions/87795/how-to-prevent-flickering-in-listview-when-updating-a-single-listviewitems-text

I will soon update the exact answer for it.

I got the solution...

I want url based service without using wcf client just like asmx service.

[ServiceContract]
public interface IFileUpload
{
[OperationContract]
[WebInvoke(
Method = "POST",
BodyStyle = WebMessageBodyStyle.Bare, ResponseFormat=WebMessageFormat.Json,
UriTemplate = "/UploadedFiles/")]
void Upload(Stream data);
}
public class FileUpload : IFileUpload
{
public void Upload(Stream data)
{
StringBuilder sb = new StringBuilder();
try
{
string contentType = WebOperationContext.Current.IncomingRequest.ContentType;
if (!contentType.StartsWith("multipart/form-data; boundary="))
{
throw new ArgumentException("Error, invalid Content-Type: " + contentType);
}

MemoryStream ms = new MemoryStream();
byte[] buffer = new byte[1000];
int bytesRead = 0;
do
{
bytesRead = data.Read(buffer, 0, buffer.Length);
ms.Write(buffer, 0, bytesRead);
} while (bytesRead > 0);
sb.AppendLine("Request size: " + ms.Position);
string boundary = contentType.Substring("multipart/form-data; boundary=".Length);
byte[] boundaryBytes = Encoding.ASCII.GetBytes(boundary);
byte[] requestBytes = ms.ToArray();
int index = 0;
Debug.Assert(requestBytes[0] == (byte)'-', "First char is '-'");
Debug.Assert(requestBytes[1] == (byte)'-', "Second char is '-'");
index = 2;
string boundaryLine = ReadLine(requestBytes, ref index);
Debug.Assert(boundaryLine == boundary, "First line is boundary");
string contentDispositionLine = ReadLine(requestBytes, ref index);
Debug.Assert(contentDispositionLine.StartsWith("Content-Disposition"), "First line of part is Content-Disposition");
sb.AppendLine(contentDispositionLine);
string contentTypeLine = ReadLine(requestBytes, ref index);
Debug.Assert(contentTypeLine.StartsWith("Content-Type"), "Second line of part is Content-Type");
sb.AppendLine(contentTypeLine);
string emptyLine = ReadLine(requestBytes, ref index);
Debug.Assert(emptyLine == "", "Third line is empty");
byte[] file = new byte[requestBytes.Length - index - "\r\n--".Length - boundaryBytes.Length - "--\r\n".Length];
Array.Copy(requestBytes, index, file, 0, file.Length);
File.WriteAllBytes(@"\UploadedFiles\a.txt", file);
sb.AppendLine("File saved to a.txt, len = " + file.Length);
}
catch (Exception e)
{
sb.AppendFormat("{0}: {1}", e.GetType().FullName, e.Message);
sb.AppendLine();
}
WebOperationContext.Current.OutgoingResponse.ContentType = "text/plain";
// return new MemoryStream(Encoding.UTF8.GetBytes(sb.ToString()));
}
string ReadLine(byte[] buffer, ref int index)
{
StringBuilder sb = new StringBuilder();
while (index < buffer.Length - 1 && buffer[index] != 0x0D && buffer[index] != 0x0A)
{
sb.Append((char)buffer[index]);
index++;
}
index += 2;
return sb.ToString();
}
}
What is wrong in above code? is above works to accept multipart/form-data? Due to stream is used I cann't test it. It is not consuming through multipart/form-data by iphone. I am newbie in WCF Multipart/Form-data. Please help me

is it not possible through web service asmx(1)?
I am creating a web service application in which I have created many web service now you are telling that I need to use wcf. is it possible to two kind of service on single application(2)?

thank you!!

Hi Tadit,

How can I debug my web service?
Here my question that is this web service will accept multipart form-data?
I have created a new thread for this http://www.codeproject.com/Questions/597629/WebserviceplusforplusfileplusuploadplususingplusMu

when I phone developer consume this service they get 'invalid request' by posting data as multipart form-data with boundary.

hi Tadit,

Can you please reply for above ?

Please give me some solution for it. It is very urgent as I am on stuck.
Thank you!!

I wrote following code on demo application use consume web service and web service is giving response like: Unable to cast object of type 'System.String' to type 'System.Web.HttpPostedFile'.


<form id="form1" runat="server" action="http://MySiteAddress/FileTransfer.asmx/TransferFile" enctype="multipart/form-data">
<asp:FileUpload runat="server" id="fileArray"/>
<asp:Button ID="btnSubmit" runat="server" Text="Upload" onclick="btnSubmit_Click" />
<asp:Button ID="Button1" runat="server" önclick="Button1_Click" Text="Button" />
</form></pre>

I do not understand what you want to say. I already added on web.config file.

Hi Tadit,
Thank you again.

I know as I am accept your solution there is no right to ask a question to you in this thread. But I am facing critical problem that How to make webservice that uses TransferFile() method by multipart form data?.
I have write following code for it:
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public void TransferFile()
{

HttpContext postedContext = HttpContext.Current;
HttpFileCollection Request = postedContext.Request.Files;
foreach (HttpPostedFile item in Request)
{
string filename = item.FileName;

byte[] fileBytes = new byte[item.ContentLength];
item.InputStream.Read(fileBytes, 0, item.ContentLength);
objFileTransfer.TransferFile(filename, fileBytes);

//objFileTransfer.TransferFile(filename, fileBytes);
retJSON = js.Serialize(new { Result = objFileTransfer.TransferFile(filename, fileBytes) });
Context.Response.Write(retJSON);
// fileBytes now contains the content of the file
// filename contains the name of the file
}
}
Is this webservice get multipart form data?
When an iPhone developer consume this api they got response like:
Problem uploading file: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

Thank you Tadit!!
This is my mistake and I apologize for it.
I just one query to you that "is my code works for large file?". I have tested that files 1 or 2 kb are uploaded successfully but when I upload 1mb files then it throw "The underlying connection was closed: An unexpected error occurred on a receive." error. What I will do for this. thank you!!

Yes I checked and found complete url of ftp with directory name.

Why? I realy wants to know file uploading method to ftp. I am newbie.
Please explain where I do wrong?

This error has vanished after I restart me system but found new error:

System.Net.WebException was caught
Message=The remote server returned an error: (550) File unavailable (e.g., file not found, no access).
Source=System
StackTrace:
at System.Net.FtpWebRequest.SyncRequestCallback(Object obj)
at System.Net.FtpWebRequest.RequestCallback(Object obj)
at System.Net.CommandStream.Dispose(Boolean disposing)
at System.IO.Stream.Close()
at System.IO.Stream.Dispose()
at System.Net.ConnectionPool.Destroy(PooledStream pooledStream)
at System.Net.ConnectionPool.PutConnection(PooledStream pooledStream, Object owningObject, Int32 creationTimeout, Boolean canReuse)
at System.Net.FtpWebRequest.FinishRequestStage(RequestStage stage)
at System.Net.FtpWebRequest.GetRequestStream()
at BizConnectPro_BAL_DAL.FileUpload.TransferFile(String filename, Byte[] fileContent) in E:\BizConnect-Pro_BAL_DAL Project\BizConnectPro_BAL_DAL\BizConnectPro_BAL_DAL\FileUpload.aspx.cs:line 50
InnerException:

Why this error occured while I already pass filecontent to it.

If query is not possible from given table structure then I will change its structure as per your suggestion.

Thanks for deterministic help!!
It works but when I pass receiverId 3,4 and MessengerId 2 it display chatId. I think In this situation it should not return chatId.

As you said I wrote following procedure..
ALTER proc [dbo].[usp_StartChat]
(
@MessengerId int,
@ReceiversId varchar(200),
@MsgText varchar(max)
)
as
begin

declare @ChatIdTable table
(
ChatId int
)
declare @Temp table
(
Id int
)
declare @Temp2 table
(
Id int
)
declare @Original Table
(
Id int
)
declare @ChatId int
insert into @Temp select @MessengerId
insert into @Temp2 select * from dbo.Split(@ReceiversId)
insert into @Original select * from @Temp union all select * from @Temp2

insert into @ChatIdTable select cd.ChatId from TblChatMaster cm
join TblChatDesc cd on cm.ChatId=cd.ChatId
join TblMessageMaster mm on cm.ChatId=mm.ChatId where MessengerId in (select * from @Original)

select @ChatId=chatid from @ChatIdTable group by ChatId having COUNT(*)=(select COUNT(*) from dbo.Split(@ReceiversId))
if @ChatId is not null or @ChatId!=''
begin
....do something.. like...
insert into TblMessageMaster(ChatId, MsgText, MsgDate, MessengerId) values(@ChatId, @MsgText, sysdatetime(), @MessengerId)
select cm.ChatId, cd.ReceiverId, mm.MessengerId 'SenderId', mm.MsgText, convert(varchar(40), mm.MsgDate, 120) 'MsgDate' from TblChatMaster cm join TblChatDesc cd on cm.ChatId=cd.ChatId join TblMessageMaster mm on cm.ChatId=mm.ChatId where cm.ChatId=@ChatId
end
else
begin
....do..something.like.
insert into TblChatMaster(CreatedDate) values(sysdatetime())
select @ChatId=chatid from TblChatMaster where chatid=IDENT_CURRENT('TblChatMaster')
insert into TblChatDesc select @ChatId, * from dbo.Split(@ReceiversId)
insert into TblMessageMaster(ChatId, MsgText, MsgDate, MessengerId) values(@ChatId, @MsgText, sysdatetime(), @MessengerId)
select cm.ChatId, cd.ReceiverId, mm.MessengerId 'SenderId', mm.MsgText, convert(varchar(40), mm.MsgDate, 120) 'MsgDate' from TblChatMaster cm join TblChatDesc cd on cm.ChatId=cd.ChatId join TblMessageMaster mm on cm.ChatId=mm.ChatId where cm.ChatId=@ChatId

end
end

Yes, Exactly!!

but how could I separate ReceiverId ? and ReceiverId may be 2,3,4 then By above conclusion I need to add an extra condition. How could I do that!!

It display two different chatId 4 and 5

Sorry I didn't explain it. dbo.Split is a method that is split the value into rows where comma is founded.

It shown two different chatId 4 and 5

Thank you Sergey for your response!!

Then How do I do without SetPixel/GetPixel?

First of all thank you for your valuable response. But there is same error occured "object is currently in use elsewhere" and it is too slow when I am processing 640X480 image.

void FinalVideoSource_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
try
{
System.Console.WriteLine("1: Flag status: "+ flag.ToString());
if (!flag)
{
flag = true;
System.Console.WriteLine("2: Flag status: "+ flag.ToString());
using (ImageAttributes attributes = new ImageAttributes())
{
LiveImage = (Bitmap)eventArgs.Frame.Clone();
//NewBitmap.Size = new Size(LiveImage.Width, LiveImage.Height);
//create a blank bitmap the same size as original
//get a graphics object from the new image
Graphics g = Graphics.FromImage(NewBitmap);
//create the grayscale ColorMatrix
ColorMatrix colorMatrix = new ColorMatrix(
new float[][]
{
new float[] {.3f, .3f, .3f, 0, 0},
new float[] {.59f, .59f, .59f, 0, 0},
new float[] {.11f, .11f, .11f, 0, 0},
new float[] {0, 0, 0, 1, 0},
new float[] {0, 0, 0, 0, 1}
});
attributes.SetColorMatrix(colorMatrix);
//draw the original image on the new image
//using the grayscale color matrix
g.DrawImage(LiveImage, new Rectangle(0, 0, 640, 480),
0, 0, 640, 480, GraphicsUnit.Pixel, attributes);
//ProcessedBitmap = new Bitmap(NewBitmap);
}
#region [Image processing using loop commented]
////foreach (int a in IEnum_a)
////{
//// foreach (int c in IEnum_c)
//// {
//for (int a = 0; a < 480; a++)
//{
// for (int c = 0; c < 640; c++)
// {
// now_color = Duplicate_GrayscaleImg.GetPixel(c, a);
// if (now_color.ToArgb() == Color.WhiteSmoke.ToArgb())
// ProcessedBitmap.SetPixel(c, a, Color.Orange);
// else if (now_color.ToArgb() == Color.White.ToArgb())
// ProcessedBitmap.SetPixel(c, a, Color.Red);
// else if (now_color.ToArgb() == Color.DarkGray.ToArgb())
// ProcessedBitmap.SetPixel(c, a, Color.Red);
// else
// ProcessedBitmap.SetPixel(c, a, Color.Blue);
// }
//}
#endregion
//System.Diagnostics.Stopwatch sWatch = new System.Diagnostics.Stopwatch();
//sWatch.Start();
#region [Image processing using bitlock]

const byte BYTE_255 = 255;
Bitmap24 bm24 = new Bitmap24(NewBitmap);
// Lock the bitmap.
bm24.LockBitmap();

// Invert the pixels.
for (int i = 0; i < NewBitmap.Height * bm24.RowSizeBytes; i++)
{
// bm24.ImageBytes[i] = Convert.ToByte(BYTE_255 - bm24.ImageBytes[i]);
bm24.ImageBytes[i] = (byte)(BYTE_255 - bm24.ImageBytes[i]);
//System.Console.WriteLine(bm24.ImageBytes[i].GetHashCode())

thanks sir!
But it is difficult to find out through breakpoint. Actually exception occurred after few minutes.

Now, I am facing one another problem that I want to convert GrayScale image into Red, Yellow and Green according to dark spot found on GrayScale image.

Is this possible through that?

Highly appreciate!!

Thank you!!
I have resolved this issue by initialize bitmap on form_load like this:
private void MainScreen_Load(object sender, EventArgs e)
{
NewBitmap = new Bitmap(100, 100);
}
Memory once allocated to NewBitmap and can used it every time.

Thank you!!
width:640, height:480
I am missing one point in my posted question that this error is occurred after successfully converted and display in picturebox for few minutes.

when User close the Browser then data is not deleted.

thank you,

now i am using following method but e.commandArgument return <%item.ProductID%>,
<asp:LinkButton ID="LnBtn" runat="server"
CommandArgument='<% :item.ProductID %>' CommandName="click"
oncommand="LnBtn_Command">Add To Cart

Error 12 Invalid expression term '<'
Error 17 Invalid expression term ')'

how to use GUID? please suggest me any example for it.

thank you,

have a look to www.4templates.com site. here user has not to registered himself before buying. He can add items to cart without login and if he want to checkout/payment for that then he need to login.
I want to do same operation like www.4templates.com

just tell me that how to create session id for specific user who are visited my site. my reference site is www.4templates.com

i do not have any code for that i just ask how to manage it

thanks for ur rply!!
Can you give me some example. I am using database in my application.

picturebox1 always show visible false property

thanks for ur rply...
sorry i want to set pictureBox1.visible=true

i wrote your solution like this:

this.MyMdfForm.pictureBox1.visible=true;
but it does work.

i want to insert podate=null
instead of 1900-01-01 00:00:00.000;

In Load argument I am passing crystal report path.
when i create an exe of that Software then error has occured like this:

unhalded exception has occured in you application.Load report failed. System can not find specified path.

I am also used rpt.Load(@"..\..\..\Billing_Inventory\ReportJobwork.rpt");

thank you for your solution!!
I improved my question please check it and give me solution !!
as soon as possible!!

thank you for your comment....

print preview on crystal report display each item in different page of similar company.
i want to group all item in single page and Grand total it of similar company.

if user select same company and sale different items and want to print sale invoice then should be grouped all item in single page.

pls sir,
read again this problem. i am improved this question.......
sir this is a web based project so namespace could not been found.....
thanking you

thanx sir,
but hint me in detail how can this methods is called when we enter in textbox....