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Justim wrote: But how do we set now the pic on the Header???
Once you add the image column to one of the tables in your dataset, preferably in a table that only has a single row returned. Update the CrystalReport in the designer by refreshing the dataset in the Database expert.
After you do this, you can drag and drop the image into the report as you would any other field.
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hii,
Im developing an client server application in C#.
In that i have to use Mobile Agent technology.
On the Server side there is a class...which i want send to the client...by System.IO class..let the class be Mobile...and it has a methode mobilecode()
public class Mobile()
{
public void mobilecode()
{
Code for gathering data from client.
}
}
On the Client side i read this file by stream reader...and i save this class in the same directory of the client.cs project..
on main function of client.cs
i call the class by...
Mobile.mobilecode();
but while compiling..it gives the error...
Mobile doesnt exist...
even if i make an empty class Mobile...thinking it could b overwritten by the code sent from server...dat does not happen...on runtime it reads the same old file...and not the does not updates till the code is executed.
So can anyone help me ou here...as to how to send a class file 4m server to client at runtime and access it immediately at runtime...!!
any help wud b appreciated...
Thnx in advance,,,,!!
ankita luniya
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creating class is not enough. You should create an object an then use it.
Life was much simpler in 2002
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Can u plzz temme in detail hw to....???
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This[^] Should help
Life was much simpler in 2002
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hii...
thx 4 d help...
bt dlink u sent is a v elemntry article...
im actually developing a mobile agent based intrusion detection system..
and i have to send a mobile agent code from server side 2 client to collect the process list
and send to server for inserting in2 database..
and thn dat mobile code file has 2 b deleted from client side...
so it has 2 include socket prg n inpt op streams as well...
if smthn els u cud suggest?
thx in advnc
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ankita luniya wrote: thx 4 d help...
bt dlink u sent is a v elemntry article...
your question was also an elementry one. so I suggested you to read basics before going to complex problems. Anybody with a basic OOP idea can determine that you have to create an object before using properties of that class. That elementry article helps solve your basic question.
Life was much simpler in 2002
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i gues u din get me...
nyws thx 4 ur help...!!
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Hi,
I am using this line in the code,
ActiveDs.IADsADSystemInfo oSysInfo = new ActiveDs.ADSystemInfoClass();
string temp = oSysInfo.UserName;
This execution works fine on a few systems and for the other systems (few Laptops) it gives the following error "Insufficient memory to continue the execution of the program";
Can you tell me how to resolve this error?
Also, is there another way to find out the CN in ActiveDs.IADsADSystemInfo.UserName in the active directory?
Thanks for your help,
rozhanin
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hi friends,Good Evening!!..how can i build an assembly on my own in vs2005.im using webforms.Please explain it in simple steps ,friends.Thank you in advance
Hi,Im Razana
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I'm sorry, but your question doesn't make too much sense. Do you want to know how to trigger a build off the build menu? Or about MSBuild?
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No friend,I just wanna create a shared assembly in c#2.0.
Hi,Im Razana
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Still. What do you mean? What is your exact problem? That's still too vague and open to interpretation.
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I suppose you want to create a dynamic library (DLL) to share your classes and methods. Then make a new "C# Class Library" project in VS. Do some coding, compile and add it to another project(s) as a reference.
Greetings - Gajatko
Portable.NET is part of DotGNU, a project to build a complete Free Software replacement for .NET - a system that truly belongs to the developers.
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Hello...
private void button1_Click(object sender, EventArgs e)
{
Invoke(new MethodInvoker(MyMethod));
}
or...
private void button1_Click(object sender, EventArgs e)
{
if(InvokeRequired)
{
Invoke(new MethodInvoker(MyMethod));
}
else
{
MyMethod();
}
}
What are the differences ?
Why should I use "InvokeRequired" ?
I can use Invoke method in main thread and another thread also.
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Hi,
first of all I think you have choosen a bad example. When receiving a Click event of a button it is clear it will be in the same thread as the container was created in.
Now to your question:
Invoke delegates a call into the thread the control was created in. This is necessary as Windows can react in confusing ways when it is not done. The InvokeRequired version will only do this when it is necessary. If the caller is already in the correct thread it will return false and thus call the method normally. As Invoke is rather expensive compared to a normal method call this might give you a performance benefit. But if you are sure that it is always needed the extra InvokeRequired call might also reduce performance.
Robert
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Hi,
I created a Dialog box in c#/.NET and I tried to retrieve a data from a combo box present in that Dialog box. I am able to retrieve data using a Property. But at one point of time, I am getting an InvalidOperationException.
Can anyone help me out!
here is the code...
PanelSelectDialog dlg = new PanelSelectDialog();
dlg.ShowDialog();
if (dlg.DialogResult == DialogResult.OK)
{
str = dlg.SelectedPanel;
MessageBox.Show(str);
}
...
...
public partial class PanelSelectDialog : Form
{
public PanelSelectDialog()
{
InitializeComponent();
PanelList.Items.Add("hi");
PanelList.Items.Add("bye");
}
public String SelectedPanel
{
get
{
return PanelList.SelectedItem.ToString();// PanelList is the
//name of combo box
}
}
}
}
Thanks in advance
satheesh
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satheesh.yuva,
Which line is the error happening on?
Regards,
Gareth.
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Hey guys,
I am writing a program that works with the registry.
I have the following problem when I want to read REG_SZ values. I don't know how to separate the values correctly.
Example:
Key - HKEY_LOCAL_MACHINE\Software\Classes\AviFile\Shell\Play\Command
ValueName - (Default)
C:\Program Files\Windows Media Player\wmplayer.exe /prefetch:8 /Play "%L"
Might appear also as
"c:\program files\windows\media player\wmplayer.exe" /prefetch:8 /Play "%L"
If I split the string using '"' or ' ' it won't work in all of the cases.
It's not like with parsing command line arguments where you know that a path with spaces in it will have the correct punctuation.
How does microsoft know how to parse these strings correctly?
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mjmim wrote: How does microsoft know how to parse these strings correctly?
I cannot confirm this but I read once that they have software developers working there.
led mike
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 .
Any real answers?
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Ok, so this is the first time I am posting up an article about programming. After reading the help I understand that I am to post up my coding, point out the obvious and state my problem so i will do that now...
1- The code:
using System;
using System.Collections;
using System.Collections.Generic;
class ClassX
{
//receives the dependent 'y' variable and then the regressors in the cast: lists<double> only
public static Matrix beta(List<double> y, List<double> reg1, List<double> reg2, List<double> reg3, List<double> reg4, List<double> reg5, List<double> reg6)
{
int n = ret_nzd.Count;
//first get the regressors into a 2-D array and then matrix into a n*7 sized matrix
double[,] a = new double[n,7];
for(int iy=0;iy<7;iy++)
for (int ix = 0; ix<7; n; ix++)
{
if (iy == 0)
a[ix, iy] = 1.0;
if (iy == 1)
a[ix, iy] = reg1[ix];
if (iy == 2)
a[ix, iy] = reg2[ix];
if (iy == 3)
a[ix, iy] = reg3[ix];
if (iy == 4)
a[ix, iy] = reg4[ix];
if (iy == 5)
a[ix, iy] = reg5[ix];
if (iy == 6)
a[ix, iy] = reg6[ix];
}
//now get the dependent variable,y, into a n*1 array and then matrix
double[,] yarray = new double[n,1];
for (int ix = 0; ix<7; n; ix++)
yarray[ix,0] = y[ix];
//define new matrices
Matrix X = new Matrix(a);
Matrix Y = new Matrix(yarray);
Matrix BetaMatrix = new Matrix(7, 1);
Matrix XTemp = new Matrix(7,7);
Matrix XdashXInverse = new Matrix(7,7);
Matrix XTransY = new Matrix(7,1);
//X'X:
Matrix XTrans = X.Transpose();
for (int ix = 0; ix < 7; ix++)
{
for (int iy = 0; iy < 7; iy++)
{
for (int iz = 0; iz < 7; iz++)
{
XTemp[ix, iy] += XTrans[ix, iz] * X[iz, iy];
}
}
}
//(X'X)^-1:
XdashXInverse = XTemp.Inverse();
//X'Y = 7*1
for (int ix = 0; ix < 7; ix++)
{
for (int iz = 0; iz < n; iz++)
{
XTransY[ix, 0] = XTrans[ix, iz] * Y[iz, 0];
}
}
//(X'X)^-1 (X'Y):
for (int ix = 0; ix < 7; ix++)
{
for (int iz = 0; iz < n; iz++)
{
BetaMatrix[ix, 0] = XdashXInverse[ix,iz] * XTransY[iz, 0];
}
}
return BetaMatrix;
}
}
2- The obvious:
I am trying to obtain a linear multi-regression model in c# but I wanted to build most of the modeling myself in order to learn c#. What you can see so far is that my data is coming in the form of a list<double> where the dependent variable is labelled y and the regressors are named reg1,...,reg6 with a count of about a thousand data points. and i want a 2d array so that i can convert to a amtrix and hence do some matrix operations on.
3- The problem:
I am using a cs file (matrix class) produced by Syed Mehroz Alam where the article was produced on this forum titled 'Application of Fraction class: Matrix class in C#'. I will not show his code as I dont think it is appropriate for me to post something produced by someone else without their consent. My problem then becomes when i try running the programme. basically I get an error from the matric class stating:
catch (Exception)
{
throw new FractionException("Conversion not possible");
}
I am not sure what I am doing wrong to get this exception error message from the matrx class. Can anyone please help? 
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Change that code to
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
throw new FractionException("Conversion not possible");
}
and see what it shows you. Better yet, set a breakpoint and step through the code to see which line blows up. The debugger will let you look at the exception details, even if you don't assign the exception to a variable.
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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Hello,
I want to invoke methods from the unmanaged code(COM component.).
I want some suggestion for that, should i go for managed C++ wrapper or
will be it OK if i go for C#.
Basically main problem with the com is that, it has exposed one
method named Init((Inknown *) *pSYNInfo).
But they don't have exposed the SYNinfo class, which needs to be
passed to Init function. So what approach should i do so that i can
invoke the Init() function after setting the proper values to the SYNInfo
Class. Can i access the SYNInfo file by adding the header file in the
managed C++. Please help me out.
Thanks in advance.
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