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Hello,
In short words:
+= connects an eventhandler.
-= disconnects an eventhandler.
All the best,
Martin
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Hi,
I want to add that there is some magic involved: when you first did
event += new EventHandler(something);
and later do
event -= new EventHandler(something);
you actually create a new object to remove some older object from a list, but it works !
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Hi,
I'm trying to save a jpeg onto a web server using a web service with a c# desktop app as the Web service consumer. I'm passing the image as a byte array
Here's the client side method:
public static byte[] GetBytes(Bitmap bmp)<br />
{<br />
if (bmp == null)<br />
return new byte[0];<br />
<br />
System.IO.MemoryStream stream = new System.IO.MemoryStream();<br />
bmp.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);<br />
<br />
return stream.GetBuffer();<br />
}
And here's the Server side code to get a bitmap back:
private static Bitmap GetImage(byte[] bytes)<br />
{<br />
if (bytes == null)<br />
return null;<br />
<br />
if (bytes.Length == 0)<br />
return null;<br />
<br />
System.IO.MemoryStream stream = new System.IO.MemoryStream(bytes);<br />
Bitmap b = new Bitmap(stream);<br />
stream.Close();<br />
return (Bitmap)b.Clone();<br />
}
This is the code that actually saves the image:
Bitmap bm = GetImage(imageData);<br />
GetImage(imageData).Save(@"c:\" + FileName,System.Drawing.Imaging.ImageFormat.Jpeg);
And i get this:
A generic error occurred in GDI+.\n at System.Drawing.Image.Save(String filename, ImageCodecInfo encoder, EncoderParameters encoderParams)\n at System.Drawing.Image.Save(String filename, ImageFormat format)
Any ideas what i'm doing wrong? I assume i'm trying to save in the wrong format or something but i've tried all sorts of things to no avail
Thanks
Russell
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I found this link:
It seems that cleaning up after myself using stream.Close(); was a bad idea
Russell
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i want some important differences between asp and asp.net
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;P
Programmer: A biological machine designed to convert caffeine into code. Developer: A person who develops working systems by writing and using software.
[ ^]
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Important differences? How can anyone answer that without knowing what's important to you?
Have you tried to search[^]? This topic has been discussed many times all over the world, it hardly needs repeating again just for you.
Do a search and see what you find. When you have read some about it you are more than welcome to ask any more enlighted questions here, and there is a much greater chance that someone can and will give you an answer.
---
single minded; short sighted; long gone;
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Hi,
I'm trying to create a C# application that uses SOAP to communicate with a SOAP enabled server. The only snag is that the server uses TLS-PSK (transport layer security with pre-shared keys).
I can use wsdl.exe to convert the wsdl files to C# classes, but I can’t find any way to implement TLS-PSK security. The generated classes inherit from System.Web.Services.Protocols.SoapHttpClientProtocol, this class does most of the work, and more importantly, the sending of the data.
So how, other than re-creating the SoapHttpClientProtocol class, do I go about implementing the required security on my client application?
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Hello,
I have a mdi (painting) problem. I'll try to be short and to the point:
Situation:
I have a MDI form. Instead of having the standard minmize, restore, etc buttons (when the mdi child is maximized) I have my own tabstrip control where I've created those buttons. I also have my own behavior when one child is minimized, maximized or restored, only the one child is changed (the rest keep their state).
How:
First of all, the handling is done by overriding WndProc in the child. I check WM_SIZE to see if the child is SIZE_MAXIMIZED, if it is I set WindowState to Normal, and dock the child instead (otherwise I'll get the system buttons as normal mdi behavior). I also check when the systembuttons are clicked, and dock instead of maximize, etc.
Problem:
When changing through the childs I have ALOT of flicker, and one of the main problems is that I see the caption bar of the child for a split second. I think that's what causing the flicker (or at least much of it), because the child and it's controls are doing a lot of resizing and moving. If I return when I get the WM_NCACTIVATE message, there's no flicker, but of course I can't return, that's just causing a lot of other problems.
So, does anyone have any suggestions how to get rid of the flicker, or how to NOT paint the caption bar?
Here's the WndProc override:
<br />
protected override void WndProc(ref Message m)<br />
{<br />
if (this.blockWndProc)<br />
return;<br />
<br />
if (m.Msg == WM_SYSCOMMAND || m.Msg == WM_NCLBUTTONDBLCLK)<br />
{<br />
if (this.Parent != null)<br />
{<br />
if ((int)m.WParam == SC_MAXIMIZE || (int)m.WParam == HTCAPTION)<br />
{<br />
this.Dock = DockStyle.Fill;<br />
return;<br />
}<br />
if ((int)m.WParam == SC_RESTORE)<br />
{<br />
this.Dock = DockStyle.None;<br />
this.Size = this.restoreSize;<br />
return;<br />
}<br />
}<br />
}<br />
<br />
if (m.Msg == WM_SIZE)<br />
{<br />
if ((int)m.WParam == SIZE_MAXIMIZED && this.Parent != null)<br />
{<br />
this.restoreSize = this.RestoreBounds.Size;<br />
<br />
this.blockWndProc = true;<br />
this.WindowState = FormWindowState.Normal;<br />
this.blockWndProc = false;<br />
<br />
this.Dock = DockStyle.Fill;<br />
}<br />
}<br />
<br />
<br />
base.WndProc(ref m);<br />
}<br />
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Hello,
Have you also tried to work with "this.SuspendLayout();" ... "this.ResumeLayout(true);", like the designer does?
All the best,
Martin
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Yes, I have and it doesn't solve the problem.
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Have you tried using the Control.SetStyle method? There's a number of properties that might be useful for you in it, including double buffering and such...
Standards are great! Everybody should have one!
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I am using double buffering, but I don't think I've looked at the SetStyle method.
Anyway, I've been digging in the framework with .NET reflector, and I've managed to disable the mdi system buttons. So, I'm trying to use the standard functionality right now, meaning I won't dock the childs. To get the functionality I want, I override WndProc, and return when I get the message to maximize the window... So now restore and maximize will restore / maximize only the selected child.
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hi
i have a scrolable form
i want to have a button that when clicked form is scroll atoumatic (for example 10 pixle)
how can i do ?
MHF
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Check for window.scrollto(javascript)
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Thanks But i want code in windows Apllications ??
MHF
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It obviously works on that page. We don't have enough information to help you.
Post more details, some code fragments, etc.
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I am Used two Updated Panel in two Seprate Asp panel
(i.e Panel1(visile true) And panel2 (visible false))
My Caleder control is in panel2 which is initially visible false
on button click am change it (i.e make panel1 visible false and panel2 visible true) but at that time it's not work fine
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what is Custum Dash style How can use it in Pen
i want " < " dashStyle
is it possible ?
With thanks
MHF
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You create an array of float values that represent the length of alternating dashes and spaces, and put in the DashPattern property.
What do you mean by a " < " dash style?
---
single minded; short sighted; long gone;
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Thanks
i have a mistake
MHF
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