C#

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Video preview from external device - how to? Gal Shadeck9-Jul-05 3:22 Gal Shadeck 9-Jul-05 3:22  Hi folks! I need to display video played by an external device (VCR, DVD player) in a .NET application. No need to record it, just generate a preview. How can it be done? Thanks a bundle! Redefining Enums Chris Davies9-Jul-05 2:59 Chris Davies 9-Jul-05 2:59  I have a class :- namespace MyNamespace { public class MyClass { public void MyMethod ( System.SomeNamespace.SomeEnum test ) { } } } It would be nice to declare the enum in MyNamespace so the user of the class didn't have to remember which namespace the enum was defined in, ie something on the lines of :- namespace MyNamespace { public enum MyEnum : System.SomeNamespace.SomeEnum ; public class MyClass { public void MyMethod ( MyEnum test ) { } } } Is there a way possible without having to redefine all the enum values? Many thanks. Chris Chris Davies Re: Redefining Enums S. Senthil Kumar9-Jul-05 4:02 S. Senthil Kumar 9-Jul-05 4:02  You can use the "using" statement (or directive, I forget how to name this usage) to do what you want. namespace MyNamespace { using MyEnum = System.SomeNamespace.SomeEnum; } Hope this helps. Regards Senthil _____________________________ My Blog | My Articles | WinMacro Re: Redefining Enums Uwe Keim9-Jul-05 8:01 Uwe Keim 9-Jul-05 8:01  Wow, cool, I thought this is only possible with classes... -- Affordable Windows-based CMS for only 99 €: try www.zeta-producer.com for free! Re: Redefining Enums Chris Davies9-Jul-05 9:19 Chris Davies 9-Jul-05 9:19  Many thanks, works a treat. Chris Chris Davies ListView Column Width resize ARBR9-Jul-05 2:01 ARBR 9-Jul-05 2:01  I made a ListView control on my program and I can see some code like this... I want to change the size of a Column of ListView control when I resize my program widnows. InitializeComponent()...... this.listView1 = new System.Windows.Forms.ListView(); this.columnHeader1 = new System.Windows.Forms.ColumnHeader(); this.columnHeader2 = new System.Windows.Forms.ColumnHeader(); this.columnHeader3 = new System.Windows.Forms.ColumnHeader(); this.listView1.Alignment = System.Windows.Forms.ListViewAlignment.Default; this.listView1.BackColor = System.Drawing.Color.Gainsboro; this.listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] { this.columnHeader1,this.columnHeader2,this.columnHeader3}); this.listView1.FullRowSelect = true; this.listView1.GridLines = true; this.listView1.Location = new System.Drawing.Point(4, 120); this.listView1.Name = "listView1"; this.listView1.Scrollable = false; this.listView1.Size = new System.Drawing.Size(190, 50); this.listView1.TabIndex = 5; this.listView1.View = System.Windows.Forms.View.Details; // // columnHeader1 // this.columnHeader1.Text = "Name"; this.columnHeader1.Width = 70; // // columnHeader2 // this.columnHeader2.Text = "Grade"; this.columnHeader2.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; this.columnHeader2.Width = 40; // // columnHeader3 // this.columnHeader3.Text = "Battle"; this.columnHeader3.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; this.columnHeader3.Width = 100; and...my_SizeChanged(object sender, System.EventArgs e) { this.columnHeader3.Width=this.listView1.Width-80; this.listView1.Columns.Clear(); this.listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] { this.columnHeader1,this.columnHeader2,this.columnHeader3}); } what must I code above line? Help me please. I am going to make it. complete the vision. Re: ListView Column Width resize mav.northwind9-Jul-05 20:52 mav.northwind 9-Jul-05 20:52  Why are you removing the ColumnHeaders? Just set the according Width property and that's it. Btw. you can also assign -1 or -2 to Width to adjust to header width or content width, resp. (can't remember which is which, just try it). Regards, mav Set up problem ksanju10009-Jul-05 1:30 ksanju1000 9-Jul-05 1:30  Hi I have two set up installaation file and i want to merge both of them and make one set up file how can i merge both the .msi file pls tell me complete procedure everyone must have seen that while installating the dotnet cd its first seraches the windows up date product i.e service pack ,internet exploreer i also want to make first screen and give the user option for installing after the sleection of all the option which must be installled intiallay pls tell me the c omlete path Thanks & Regards sanjeev ListView - Columns collection design-time question iliyang8-Jul-05 23:51 iliyang 8-Jul-05 23:51  I'm subclassing the ColumnHeader (named MyColumnHeader for instance) class and I want when I click the "Add" button in the Columns designer window a MyColumnHeader object to be added to the collection, and not a ColumnHeader object. I.e. I want to go round the writing of a custom collection for MyColumnHeader items, 'cause it's too complicated. Is this possible? Thanks. Pass byte array? Dominik Reichl8-Jul-05 23:08 Dominik Reichl 8-Jul-05 23:08  Hi, I want to write a function that accepts a byte[]. The byte[] may be fairly large and won't be modified by the function. What's the best declaration for this? Just declaring it as a normal byte[]? Or passing a "ref byte[]"? Const doesn't seem to work... readonly attribute? One more question: when I pass a byte[], is this automatically modifyable? I.e. do changes in the function to the array affect the outer function, too? Must I mark it using ref in order to do so? (for normal variables I of course must, but byte[]?) Thanks in advance and best regards Dominik _outp(0x64, 0xAD); and __asm mov al, 0xAD __asm out 0x64, al do the same... but what do they do?? (doesn't work on NT) Re: Pass byte array? User 20930738-Jul-05 23:25 User 2093073 8-Jul-05 23:25  Hi If you wanna your function don't change the value of array cells don't use 'ref' keyword ! This cause the parameter will pass by Reference ! I hope this was your answer Always there is another way ! Re: Pass byte array? S. Senthil Kumar8-Jul-05 23:51 S. Senthil Kumar 8-Jul-05 23:51  Not really, see my reply to the OP. Regards Senthil _____________________________ My Blog | My Articles | WinMacro Re: Pass byte array? S. Senthil Kumar8-Jul-05 23:50 S. Senthil Kumar 8-Jul-05 23:50  Passing it as a byte[] will pass the array by reference, as System.Array is a reference type. Because the array is passed by reference, the called function can modify the values in the array and the calling function will see the modified values. That is, if the called function looks like void Test(byte[] byteArray) { byteArray[0] = 23; } then the calling function will get 23 when it indexes byteArray[0]. There is no way you can avoid this, the only workaround is to pass a copy of the data in the array. However, the called function cannot change the array reference itsef. That is, if it does void Test(byte[] byteArray) { byteArray = new byte[2]; } then the calling code will *not* see the modified reference. If you want the calling code to see the modified reference, you need to add the ref keyword. Regards Senthil _____________________________ My Blog | My Articles | WinMacro Re: Pass byte array? User 20930739-Jul-05 0:27 User 2093073 9-Jul-05 0:27  Ok.Sorry I misunderstand your question ! I think there is no way to pass reference types to functions like primitives in .NET ! .Net manipulate all reference types on the heap.If you can put the objects on the stack (Like Primitives) you must define your type by STRUCT ! .NET treat to structs like primitive types. Structs are same as classes,Except in a little differences in constructors ! I hope this was helpful for you.If you find another way,Please mail me ! Best Regards, Always there is another way ! Re: Pass byte array? S. Senthil Kumar9-Jul-05 0:38 S. Senthil Kumar 9-Jul-05 0:38  Maybe you wanted to address the original poster? There are quite a few differences between structs and classes by the way, you can read more about it here[^]. Regards Senthil _____________________________ My Blog | My Articles | WinMacro Re: Pass byte array? Dominik Reichl9-Jul-05 0:46 Dominik Reichl 9-Jul-05 0:46  What will "ref byte[]" pass then? The same as "byte[]" or some weird double pointer? Read your reply again Clear now Thanks! Dominik _outp(0x64, 0xAD); and __asm mov al, 0xAD __asm out 0x64, al do the same... but what do they do?? (doesn't work on NT) Create executable? Expert Coming8-Jul-05 21:43 Expert Coming 8-Jul-05 21:43  I really feel like a dumbass, but how do you create the .exe file that you would then distribute after coding. I have only coded C# in the web before so... Thanks Re: Create executable? User 20930738-Jul-05 23:21 User 2093073 8-Jul-05 23:21  Hi... If you use VS.NET IDE it produces the .EXE file for you automatically. But if you want build your application in command prompt you must use the following command : CSC /Target:[winexe | Library | exe] /out<filename> /Reference:<dll file="" list=""> [/Res:<resinfo>] That : <filename> Example : bin\MyApp.Exe <dll file="" list=""> : System.dll,System.Windows.Forms.dll,... Note : You can't create an standart(Intel) executable for .Net applications to run without .NET Framework ! Good Luck ! Always there is another way ! Re: Create executable? Expert Coming9-Jul-05 9:38 Expert Coming 9-Jul-05 9:38  Can you guide me through the VS.Net IDE? Re: Create executable? Mathew Hall9-Jul-05 23:13 Mathew Hall 9-Jul-05 23:13  Fire up VS.Net and then File->New->Project->Windows Application or File->New->Project->Console Application depending on whether you want a .exe with a gui "I think I speak on behalf of everyone here when I say huh?" - Buffy Re: Create executable? delfme15-Jul-05 13:25 delfme 15-Jul-05 13:25  Hi mathew can i have your email? i must wrtite to you a personal email. thanks need help regarding adding components in C# and VC (Managed) arusmemon8-Jul-05 20:36 arusmemon 8-Jul-05 20:36  Hi, i am trying to add a com component in C# but the component is not been able to add, i.e. when i try to add, following error is displayed "Add reference: error adding reference to project" for additional info, i have a sample sdk that is using the component it is actually developed under VC 6.0 and is using .idl files is it possible to use this component in C# if possible how, i am also trying to add the same component in VC(managed)windows component but the problem is still the same Will some body please me, i will be very thankfull. Arus. Re: need help regarding adding components in C# and VC (Managed) Rob Graham9-Jul-05 6:10 Rob Graham 9-Jul-05 6:10  If the com component has a type library, you can use tlbimp to create an interop assembly for the com component, then add a reference to the interop assy to your project. Absolute faith corrupts as absolutely as absolute power Eric Hoffer The opposite of the religious fanatic is not the fanatical atheist but the gentle cynic who cares not whether there is a god or not. Eric Hoffer how to open a dial up internet connection from my aplication Pablo Riera8-Jul-05 18:57 Pablo Riera 8-Jul-05 18:57  Hello, Can any one tell me if there is any way to open a dial up internet connection from my .NET aplication? What i need is that my program open the internet connection (MODEM) send an e-mail and then close the internet connection (Hang off the modem). Excuse my english please Re: how to open a dial up internet connection from my aplication User 20930738-Jul-05 19:11 User 2093073 8-Jul-05 19:11  Hi You must use RAS API functions to do this job.Serach for 'RAS Client' In codeproject articles.You will find it ! Good Luck Always there is another way !

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