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Re: How to control the number of instances of a application Kastro18-Jul-03 3:53 Kastro 18-Jul-03 3:53  There is an article on Code Project by Detlef Grohs that describes the process for creating a single instance application in VB.NET. You could use the same technique with modifications to achieve what you want. It involves using Mutexes and .NET Remoting. The article is here: http://www.codeproject.com/vb/net/sing_inistan.asp[^] There is also a sample on MSDN called "Real World Applications" that describes a similar technique (using C#). It's located here: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwinforms/html/reaworapps1.asp?_r=1[^] Activator Class vikramlinux18-Jul-03 2:10 vikramlinux 18-Jul-03 2:10  hi, I am using following code to invoke my DLL and it's functions. Assembly assemScenarioPreview = Assembly.LoadFrom(Some Path); Type typeScenarioPreview = assemScenarioPreview.GetType(...); Object obj = Activator.CreateInstance(typeScenarioPreview); MethodInfo methodofScenarioPreview = typeScenarioPreview.GetMethod("Run"); methodofScenarioPreview.Invoke(obj, null); methodofScenarioPreview = typeScenarioPreview.GetMethod("CleanUp"); methodofScenarioPreview.Invoke(obj, null); In first chance it's get executed. but next time it throws an Exception. "Exception has been thrown by the target of an invocation" If I closed the client then then again ran the same code. it works.. What is the possible problem .. Re: Activator Class John Fisher18-Jul-03 4:32 John Fisher 18-Jul-03 4:32  Generally, a try/catch block around this will let you see what the exeption says about itself. Very useful stuff. Do something like the following, and you'll get information about the exception. (Also, be aware that the InnerException memeber may need to be looked at in some rarer occasions.) try { // Your code here. } catch (Exception err) { System.Diagnostics.Trace.WriteLine(err.ToString()); // or MessageBox.Show(err.ToString()); } John "We want to be alone when we hear too many words and we feel alone when it has been a while since anyone has spoken to us." Paul David Tripp -- War of Words DataAdapter and StoredProcedure totig18-Jul-03 1:18 totig 18-Jul-03 1:18  Please help me if you know the answer to this. I want to create a dataAdapter, that fills a dataSet. However, I have a stored procedure that I want to use, that takes one int as input. I have been trying this for a few hours now, and have come no closer. Re: DataAdapter and StoredProcedure Kant19-Jul-03 16:42 Kant 19-Jul-03 16:42  Design time: You have to set your parameter to the Parameters collection of the Command object. Run time: Use the Add method of the Parameters collection to create a Parameter object for the parameter in the stored procedure. SqlCommand[^] "If a jug falls upon a stone, woe to the jug. If a stone falls upon a jug, woe to the jug. Always woe to the jug"." - KaЯl This signature was created by "Code Project Quoter". Text totig18-Jul-03 0:03 totig 18-Jul-03 0:03  Firstly, what is the best way to delete some text. What I want is the number "563.5423" to become "563.54". Re: Text A.Wegierski18-Jul-03 2:07 A.Wegierski 18-Jul-03 2:07  See Remove or Substring or Replace methods of string object Hi, AW How can i make a tabpage unvisible in tabcontrol? Xytme17-Jul-03 23:48 Xytme 17-Jul-03 23:48  when i use tabcontrol,i find that there is no property for the tabpage to visible or unvisible.i want make tabpage1 to visible but tabpage2 to unvisible,but beacause there some progress need controls on tabpage2,so i can remove tabpage2,i just want to make it unvisible.how can i make that? thanks Re: How can i make a tabpage unvisible in tabcontrol? A.Wegierski18-Jul-03 2:03 A.Wegierski 18-Jul-03 2:03  Only by removing/adding from Controls Hi, AW FillPolygon problem? r917-Jul-03 22:58 r9 17-Jul-03 22:58  I have a figure that I want to fill with black color, but it don't work!! private void button11_Click(object sender, System.EventArgs e) { System.Drawing.Graphics formGraphics = null; System.Drawing.Pen myPen; formGraphics = pictureBox7.CreateGraphics(); myPen = new System.Drawing.Pen(System.Drawing.Color.Black,1); formGraphics.DrawLine(myPen, 4, 4, 50, 4); formGraphics.DrawLine(myPen, 4, 4, 4, 100); formGraphics.DrawLine(myPen, 50, 4, 50, 100); formGraphics.DrawLine(myPen, 4, 100, 27, 120); formGraphics.DrawLine(myPen, 50, 100, 27, 120); SolidBrush Brush = new SolidBrush(Color.Black); Point point1 = new Point(4, 4); Point point2 = new Point(50, 4); Point point3 = new Point(4, 4); Point point4 = new Point(4, 100); Point point5 = new Point(50, 4); Point point6 = new Point(50, 100); Point point7 = new Point(4, 100); Point point8 = new Point(27, 120); Point point9 = new Point(50, 100); Point point10 = new Point(27, 120); Point[] curvePoints = new Point[] { point1, point2, point3, point4, point5, point6, point7, point8, point9, point10, }; formGraphics.FillPolygon(Brush, curvePoints); myPen.Dispose(); formGraphics.Dispose(); } Any idea? Initializing a color poperty in c# mrpink17-Jul-03 22:40 mrpink 17-Jul-03 22:40  So I'm doing something like : [Category("Visual"), DefaultValue(XXXX) ] public Color MyColor { get{..} set{..} } What should I put in XXX to get my color initialized correctly .. whatever I put in it, I get a wrong value or color !! Cheers, MrPink Re: Initializing a color poperty in c# Mazdak18-Jul-03 2:25 Mazdak 18-Jul-03 2:25  Color.Black is what you want? Mazy No sig. available now. Re: Initializing a color poperty in c# mrpink18-Jul-03 5:41 mrpink 18-Jul-03 5:41  Well, [ ... DefaultValue(Color.Black), ] Does not work Re: Initializing a color poperty in c# J. Dunlap18-Jul-03 8:55 J. Dunlap 18-Jul-03 8:55  What about: [ ... DefaultValue(KnownColor.Black), ] "Blessed are the peacemakers, for they shall be called sons of God." - Jesus "You must be the change you wish to see in the world." - Mahatma Gandhi Loop though XML eggie517-Jul-03 19:40 eggie5 17-Jul-03 19:40  Let me rephrase the question... /\ |_ E X E GG Re: Loop though XML John Fisher18-Jul-03 4:32 John Fisher 18-Jul-03 4:32  Were you going to rephrase the question in this post or another one? John "We want to be alone when we hear too many words and we feel alone when it has been a while since anyone has spoken to us." Paul David Tripp -- War of Words Re: Loop though XML Ista21-Jul-03 17:19 Ista 21-Jul-03 17:19  funny he lost the thought Re: Loop though XML eggie521-Jul-03 17:23 eggie5 21-Jul-03 17:23  NO. I'm just to damn fustrated with this stupid little thing I need my program to do.... and I don't know how to do it... it's dumb... I don't know how... and I just want someone else to do it... /\ |_ E X E GG Re: Loop though XML Ista22-Jul-03 3:15 Ista 22-Jul-03 3:15  then show the xml and describe what your trying to do Memory Management Gaurika Wijeratne17-Jul-03 19:39 Gaurika Wijeratne 17-Jul-03 19:39  Memory Management I am using mid form in a windows forms application. Every time I am loading new child windows memory is going up(it’s ok). When I close them memory is not coming down. I am disposing child windows as they close. Why is this happening ? What is the solution for this problem ? What are the best practices for memory management. Thanks Gau Gaurika Wijeratne. // www.gaurika.com Every Compounded thing is impermanent Re: Memory Management apferreira18-Jul-03 5:10 apferreira 18-Jul-03 5:10  If you are using task manager to detect memory usage, what you are seeing is the programs working set and not the atuall memory usage. You say you are using the Dispose method as you close windows. But do those child windows use any resources that are not automatically disposed? Contrary to popular belief, .NET's automaticall memory management does not imply immediate 100% resource cleanup. Some resources have to be cleaned up manually to decrease memory footprint at any given time since the garbage collector funtions in a non-deterministic way. Re: Memory Management Gaurika Wijeratne18-Jul-03 7:22 Gaurika Wijeratne 18-Jul-03 7:22  I don’t have any other resources in them . say if I have 20 child windows even after I close all of them, Task Manager dose not reflect it , till I close the MDI main. Is Task Manager showing the correct memory ? Any other tool to track memory ? Gaurika Wijeratne. // www.gaurika.com Every Compounded thing is impermanent Re: Memory Management apferreira19-Jul-03 2:55 apferreira 19-Jul-03 2:55  Task manager show the program's working set, not the actual memory consumption at a given time. You can see this bi minimizing and then restoring your application. Task Manager refreshes the value and usually the new value is much less than the original one. Although it is not a recommended practice, you can try forcing a garbage collection through GC.Collect(). Also, try this MSDN link: http://msdn.microsoft.com/netframework/downloads/samples/default.aspx?pull=/library/en-us/dndotnet/html/dotnetperftips.asp[^] systray question KETUINHA17-Jul-03 18:01 KETUINHA 17-Jul-03 18:01  how to minize and close form into system tray (application running) help me!!! Nho'c ti` Re: systray question Mazdak18-Jul-03 2:19 Mazdak 18-Jul-03 2:19  You have to use NotifyIcon . For more information search it in CP. There is a article about it. Mazy No sig. available now.

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