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  • How to copy items from a dropdownbox to another [C#]

    - by LuRsT
    How can I copy items hardcoded from one dropdown box to another keeping the keys and values? drpTypes.Items.Add(new ListItem("Tipos de Acções", "1")); drpTypes.Items.Add(new ListItem("Tipos de Combustível", "2")); drpTypes.Items.Add(new ListItem("Tipos de Condutor", "3")); drpTypesCreateEdit.Items.AddRange(drpTypes.Items);

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  • why can not create instance from any class out side of constructor?

    - by Phsika
    why i generate instance outside of class. i give inheritance snifC to sinifD i need to create instance sinifC sinifc= new sinifC() in SinifD out side of constructor? public class sinifC { public void method3() { Console.WriteLine("Deneme3"); } } public class sinifD : sinifC { void method4() { Console.WriteLine("Deneme4"); } public sinifD() { sinifC sinifc = new sinifC(); sinifc.method3(); } } i want to make it below: public class sinifC { public void method3() { Console.WriteLine("Deneme3"); } } public class sinifD : sinifC { void method4() { Console.WriteLine("Deneme4"); } sinifC sinifc = new sinifC(); sinifc.method3(); } Error: Invalid token '(' in class, struct, or interface member declaration

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  • Upcasting in C#: Making a Fruit a Pear

    - by Adam Kane
    Why can't I upcast (?) a Fruit to a Pear? public static class PearGenerator { public static Pear CreatePear () { // Make a new generic fruit. Fruit genericFruit = new Fruit(); // Upcast it to a pear. (Throws exception: Can't cast a Fruit to a Pear.) Pear pear = (Pear)genericFruit; // Return freshly grown pear. return ( pear ); } } public class Fruit { // some code } public class Pear : Fruit { public void PutInPie () { // some code } } Thanks!

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  • JQuery updating label

    - by Zaps
    Hi, I have 2 textboxes and a label on my page. The 2 textboxes will contain numeric values. The label text will be the product of the 2 textbox values. Is there a way to do this using JQuery so that the value can get updated without having to do a postback? Also the textboxes may contain values with commas in it: e.g. 10,000. Is there a way I can extract the number from this so that it can be used to calculate the label value. Thanks in advance, Zaps

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  • C# property ending with ?

    - by MicMit
    What does that mean ? public bool? Verbose { get; set; } When applied to string? , there is an error Error 11 The type 'string' must be a non-nullable value type in order to use it as parameter 'T' in the generic type or method 'System.Nullable'

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  • [C#] Implementing different windows/forms in a Windows Mobile application?

    - by pbean
    I am a bit new to Windows Mobile (with C# and the compact framework) development, so I am kind of unsure how to do this. The user has to go through several pages of information in a wizard-like manner. At the start there is a login window. How would I go about and implement this? Would I just have different User Controls for each page and create/show and destroy/hide them on request? Or do I need to create different forms and somehow show those?

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  • How can i do something like IList<T>.Contains(OtherObjectType) ?

    - by Noctris
    Hi, I have the following classes: Client ClientCacheMedia ( contains Client, Media and some other parameters so it is the link between the media and the client) Media where client contains an IList. Now what i would like to do, is have a way to check if this ilist contains a certain media so : Client.ClientCacheMedia.Contains(MyMedia) is there any way to let the IList accept media as an object to match ? ( i can easily override the Equals Property on ClientCacheMedia to check if the media passed is the one that the ClientCacheMedia.Media contains, it's just the Ilist that will not accept any other object on the Contains Method.

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  • DBTransaction Rollback throws

    - by pdiddy
    Looking into the documentation it says that the Rollback method can throw when the transaction is not in pending state (after begin transaction and before commit transaction). I can't seem to find a way to check whether the transaction can be rollback or not. There isn't a state property either.

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  • How do i pass null into stdin like this perl code?

    - by acidzombie24
    This is my question and apparently this is the answer. I found you can stdout to null by writing NUL in command prompt so i tried writing < NUL at the end of my argument. No luck. How do i pass in null or do something with the IO locks like that perl code does so i can get my ffmpeg script not locking up after 15 or so seconds?

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  • Further Details on Vallidating Event not Working....

    - by Sameep
    I have created a custom control that inherit the TextBox, in that control i have override validating event and in validating event i have put validation that checks for the empty field. Now when i use that control on my winform and when i click on save button it immediate fires save event.. the validation event of custom control fires and it displays the error message but still it does not stop the save event to fire.... the save button CauseValidation Property is set to true.. i have also put (this.ValidateChildren()) i have also put CancelEventArgs ce.Cancel = true; in Custom Textbox control but neither working to stop the save event to fires.. i only want to fire Save event if Textbox is not empty. validating event fires, shows message for empty field and immediate fires save event.. now if you got an idea then if you have solution then please provide solution..

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  • Different Assembly Name for Each Platform Target

    - by Murray
    I need to generate different assembly names depending on the platform target. For example, I have a console application "bob.exe". Instead of building for AnyCPU, I need to build explicitly for x86 and x64 and thus want "bob32.exe" and "bob64.exe". The Application tab in Visual Studio 2010 project options disables the Platform combobox. Build Events also don't allow options per platform so I can't rename it afterwards very easily.

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  • Merging DataTable(s) Column by Column.

    - by Omky
    Hello All, I want to merge two or more DataTables Colum by Column. I am developing C# Windows Application. My use case is below: I have empty data grid in my application. user will drag and drop one column from available column list box into data grid. The data grid will start displaying data for that column. Now, I will drag another column into data grid and now grid should get populated data of two columns. This will repeat till user feels that he has dropped all necessary columns. What is best way to do this? Is there any performance hits with large number of rows typically 1 million? Please help. Thanks, Omky

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  • foreach statement (get string values)

    - by nhoyti
    Can someone please help me out? My code for splitting the strings is working however, i still need to use the splitted string my page. How can i achieve this? Here's my current code private void SplitStrings() { List<string> listvalues = new List<string>(); listvalues = (List<string>)Session["mylist"]; string[] strvalues = listvalues.ToArray(); if (listvalues != null) { foreach (string strElement in listvalues) { string[] prods = strElement.ToString().Split("|".ToCharArray()); string prodName = prods[0].ToString(); Response.Write(prodName); } } } link text how can i replace the response.write with any label or literal? when i tried to use a literal on the code it displays one single string not all of the strings that's been splitted. any ideas?

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  • Looping over all tabs in IE 8

    - by Quandary
    Question: I want to loop over all open tabs in Internet Exporer (for all open IE windows) and save the URL in a text file. How can I do that ? I have windows 7 32 bit and IE 8. Code for Firefox/Google chrome would also be welcome.

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  • Java's PipedReader / PipedWriter equivalents in C#?

    - by devoured elysium
    I have defined a Pipe class in Java, making use of PipedReader and PipedWriter. I am now trying to port this same class to C#. Is it possible to accomplish the same as shown in the following code in C#? public final class Pipe { private final PipedReader pipedReader = new PipedReader(); private final PipedWriter pipedWriter = new PipedWriter(); public Pipe() { pipedWriter.connect(pipedReader); } ... } I am guessing what I'll want to use in C# for PipedReader and PipedWriter will be StreamReader and StreamWriter? Is there something like a connect() method? Thanks

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  • Treeview insert property problem

    - by curiosity
    TreeNode[] nodes = this.treeview.Nodes.Find(node.Text, true); if (nodes.Length > 0) { int i = nodes[0].Index; if (nodes.Length > 0) this.treeview.Nodes.Remove(nodes[0]); this.treeview.Nodes.Insert(i, nodes[0]); } i tried this code, but the node nodes[0] is not inserting into the particular index. instead it is adding at the last. but yes i use treeviewsorter. Any idea how to insert node without using insert or using insert effectively with treeviewsorter??

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  • How can I convert my Stream (image data) back into a file

    - by James Hay
    I have a WCF restful service that I'm trying to upload an image to. I have a very basic metod that accepts a stream as it's only parameter and is defined in the contract as: [OperationContract] [WebInvoke(UriTemplate = "ReviewImage", BodyStyle = WebMessageBodyStyle.Bare, Method = "POST")] ReviewImage UploadImage(Stream data); I'm actually consuming this service from flash (which is fairly inconsequntial) which selects a file from the file system and uploads it through the service url. It all works seems to work, adding a breakpoint to the UploadImage method breaks as expected. If I wanted to save this file back to disk, is it just a case of reading this Stream object into a FileStream object that creates the file somewhere? A bit like the this? When i do actually do this the file can not be opened as an image. I'm sure i'm missing a key piece of knowledge here. Does my stream actually contain just the image bytes or does it contain more than that?

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