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I have a form the user fills in and if any of the key fields are missing they show the CrucialDataMissingError errorprovider i created.
BUT the user has the option to continue without entering all the key data fields.
So i need a way to set all CrucialDataMissingError's to "" if the user chooses to ignore the errors is it possible to do this with a single command for all error providers of the same type or do i need to do each in a seperate command.
Thanks.
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I want to raise an event from SQL-Server to C# .NET .
where and how i can do this.
thanks.
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Not an easy thing, without SQL Server 2005.
I'd suggest:
1. Write to a file on a stored procedure and use a FileSystemWatcher on C#.
2. Talk, on a stored procedure, to a socket in C#.
3. Talk to a COM component.
Yes, even I am blogging now!
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I want to call a function, exported by a C DLL, in my project, but I do not know its parameters! How can I get parameters (signature) of a function exported by a C DLL? I am looking for a tool or any code that achieves this. Dependency Walker fails to show signature of C functions, why?
ARSALAN MALIK
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Arsalan Malik wrote:
How can I get parameters (signature) of a function exported by a C DLL?
You look in its header file.
Arsalan Malik wrote:
I am looking for a tool or any code that achieves this.
Notepad :p
Arsalan Malik wrote:
Dependency Walker fails to show signature of C functions, why?
Because it relies on the header file.
top secret
Download xacc-ide 0.0.3 now!
See some screenshots
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You look in its header file.
Thankyou for the reply. Problem is that I do not have any header/lib file for the dll. How to extract function signature from dll only?
ARSALAN MALIK
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You can't. Since the parameters are passed on the stack, you must rely on the code that is popping the parameters off the stack in order to get them passed. On top of that parameters can also be passed by pointers, where the pointer is pushed onto the stack and poped off by the function code, to be used to point to an area of memory that, unless you had the header file to describe it to you, would be utterly meaningless without any type of context.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Hi All,
I have managed to Host (C#)Windows Froms Control in MFC Application.
MFC Application is Dialog based application where i did "Insert ActiveX Control" on a dialog and i am able to see the Control on Dialog.When i execute Program it runs fine.
Problem is after that when i Close Development Environment (VC++(6.0) IDE)and open it agian,it gives error "The ActiveX Control can not be instantiated"
"The ActiveX Control MyControl.MyControl1 Failed to initialize properly"
And in Design environment it shows Blue background on my control.But when i run it, it runs fine.
It is very annoying ,every time i closes and opens the IDE error is shown.
Can anybody give some advice on this.
Thanks
TusharM.
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My Datagrid Bind to relation data table,how are apply different GridColumnStyles for different table?
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hi,i am in need of a code for back propogation.the details are like this
1.given # of PEs in input layer,hidden layer ,output layer as 4,3,3.
2.learning rule is the delta rule
training coefficient (alpha)=0.80
transher function for all layers is SIGMOID.
gain factor=10.00
error threshold 0.30
# of pattern associations=1
primary input=1,0,0,1
desired output=1,0,1
with all the above data we gotto calculate cummulative total sum of errors.
Any one of you please help me with this.
thanx a lot
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Why does this suddenly sound like a school project?
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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For me, too. And that's the reason I didn't answer it when he asked for it before. Sounds like a student that can't even do a google search.
Yes, even I am blogging now!
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What is the C# equivilant of Exit Sub in VB?
17 year old with too much free time.
...cooler than the other side of the pillow.
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the equivalent is return
example:
private void DoJob(string jobName)
{
if(jobName == "")
{
return;
}
else
{
}
}
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Thanks!
17 years old with too much free time.
...cooler than the other side of the pillow.
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Hi!
I need to know how to capture the video signal from a microcamera connected to the serial port and then show the video stream in the PC (i.e, in a window).
Well, i know that the question could be so hard, i will really appreciate any help on how to interpret the video signal or how to show the video stream... any idea, link, book, or whatever.
Could it be done with DirectX?
Many thanks in advance!
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Hi,
Capture a video stream with directX[^]
A video signal from a microcamera should be the same as any other video signal. You will have to see if you microcamera encodes the video (if it does, with wich codecs can you decrypt it)
You can definitly use the link above to display your video stream.
This will certainly not solve your problem, but I hope it helps
Hugo Migneron
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i have a user control that i wrote that has a collection as a property
when i use it in a program i can see collection property in the controls properties
i can also open the collection editor dialog however everything is disabled
how do i enable that so i can insert strings into my collection via the properties window
thanks
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Hi, who knows how to get another computer time which is connected by LAN programmly, in C#/C++
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take a look at this:
http://www.codeguru.com/vb/gen/vb_system/network/article.php/c1637/
it's on VB, but main idea is clear enough.
Robin Panther
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is there an event for a listbox that triggers when the number of items has changed, if not any ideas on how to implement this?
IM PROUD TO BE A GMAIL;
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Hello:
Here are two programs
1) MyDotNetControl - A windows form control displaying some UI
2) MyVBClient - A VB COM client app hosting the above control.
You'll need to build the control first and register is using regasm for Interop. Then run the VB program from the same location as the component. The VB program describes and shows the errant behavior. This was complied using VS2003.
Different behavior is seen when build using VS2003 and VS2005
1) VS2003 - When the user control loses focus, the text box and button disappear (the label does not). On double clicking they reappear but not on repaint.
2) VS2005 - When the user control loses focus, the text box disappears (the label and buttons do not). On double clicking they reappear but not on repaint.
Has anyone seen such problem? If so, how did you work around it?
Since there was no way to attach files, I had to include the source code here. I have a ZIP file containing the source code. If you can send me your email I can sent it to you. This should save you time.
Thanks a lot!
Sameer Nene
--------------------- Control in C#/.NET---------------------------------
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
namespace MyDotNetControl
{
///
/// Summary description for UserControl1.
///
public class UserControl1 : System.Windows.Forms.UserControl
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Panel panel1;
///
/// Required designer variable.
///
private System.ComponentModel.Container components = null;
public UserControl1()
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
// TODO: Add any initialization after the InitComponent call
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if( components != null )
components.Dispose();
}
base.Dispose( disposing );
}
#region Component Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
components = new System.ComponentModel.Container();
panel1 = new System.Windows.Forms.Panel();
this.label1 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
panel1.Controls.Add(this.label1);
panel1.Controls.Add(this.button1);
panel1.Controls.Add(this.button2);
panel1.Controls.Add(this.textBox1);
this.SuspendLayout();
//
// label1
//
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 14F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label1.Location = new System.Drawing.Point(104, 16);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(152, 23);
this.label1.TabIndex = 0;
this.label1.Text = "My UserControl";
//
// button1
//
this.button1.BackColor = System.Drawing.Color.Cornsilk;
this.button1.Location = new System.Drawing.Point(48, 120);
this.button1.Name = "button1";
this.button1.TabIndex = 2;
this.button1.Text = "button1";
//
// button2
//
this.button2.BackColor = System.Drawing.Color.Cornsilk;
this.button2.Location = new System.Drawing.Point(200, 120);
this.button2.Name = "button2";
this.button2.TabIndex = 3;
this.button2.Text = "button2";
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(120, 72);
this.textBox1.Name = "textBox1";
this.textBox1.TabIndex = 1;
this.textBox1.Text = "textBox1";
this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged);
//
// UserControl1
//
this.BackColor = System.Drawing.Color.CornflowerBlue;
this.Controls.Add(this.textBox1);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.label1);
this.Name = "UserControl1";
this.Size = new System.Drawing.Size(352, 200);
this.Load += new System.EventHandler(this.UserControl1_Load);
this.ResumeLayout(false);
}
#endregion
}
}
-----------------------------------------------------------------------------------
VB Client
Option Explicit
Dim myCtl As Control
Private Sub Form_Load()
Set myCtl = Controls.Add("MyDotNetControl.UserControl1", "MyApp", Form1)
myCtl.Visible = True
myCtl.Width = 4500
myCtl.Height = 3500
Label1.Caption = "When tabbed out of the user control (blue color), the control disappears. " & vbCrLf & vbCrLf & "On double clicking in the user control, it reappears." & vbCrLf & vbCrLf & "Forcing a paint by bringing another control on top doesn't work either." & vbCrLf & vbCrLf & "This problem is seen with MFC client applications as well." & vbCrLf & vbCrLf & "The interesting thing to note, however, is that the Label control shows up always."
End Sub
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Hi folks,
I'm working on a project thats an in house file replication system. FileSystemWatcher does a nice job of providing events for file/folder changes. But there is no way to know which process initiated a file change. Is there some class in Csharp or some Win32 api that does this? I have seen programs that do such a thing (but unfortunately not open source).
Thanks
-Francis
Do I need a signature?
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No there isn't. The FileSystemWatcher class doesn't provide you with a ProcessID that you can use to track back to a Application name.
The other applications that you've seen do this, do not use the FileSystemWatcher. They are custom written and must install a virtual device driver that sits between the applications and the File System. This driver handles ALL the File I/O functions that applications use, log what's it's been told to do, then just forwards the calls to the actual File System functions that were called. The applications have no idea this is happening.
If you want an example of what I'm talking about, see SysInternals FileMon[^]. But there is no source code for it...
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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