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  • FileNotFoundException when using FileInputStream

    - by user1672817
    I am trying to access a file I have contained in the jar. The beginning of my code is as follows: import java.io.*; import java.net.*; public class intro { public static void main(String[] args) throws IOException{ URL jarUrl = intro.class.getResource("myFile.jar"); File myJar = new File(jarUrl.toString()); FileInputStream fis = new FileInputStream(myjar); } I'm getting the following error: Exception in thread "main" java.io.FileNotFoundException: file:\...myFile.jar (The filename, directory name, or volume label syntax is incorrect) at java.io.FileInputStream.open(Native Method) at java.io.FileInputStream.<init>(Unknown Source) at intro.main(intro.java:10) It seems to have no problem finding the URL or initializing the file, but I can't get the FileInputStream to work. Does anybody know what I'm doing wrong? Help would be appreciated.

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  • web service client in java

    - by user622222
    I want to generate a client program using the service I am unable to display the results, how can I do so? import java.rmi.RemoteException; public class searchtry { public static void main(String[] args) throws RemoteException { SearchRequest request=new SearchRequest(); SearchRequestType1 type1=new SearchRequestType1(); query.setAppId("*********************************"); //Windows Live gave this id for using that service query.setSources(new SourceType[]{SourceType.Web}); query.setQuery("Java"); aratip.setParameters(request); SearchResponseType0 answer= client.search(type1); System.out.println(answer.toString()); }

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  • How to speed up dumping a DataTable into an Excel worksheet?

    - by AngryHacker
    I have the following routine that dumps a DataTable into an Excel worksheet. private void RenderDataTableOnXlSheet(DataTable dt, Excel.Worksheet xlWk, string [] columnNames, string [] fieldNames) { // render the column names (e.g. headers) for (int i = 0; i < columnNames.Length; i++) xlWk.Cells[1, i + 1] = columnNames[i]; // render the data for (int i = 0; i < fieldNames.Length; i++) { for (int j = 0; j < dt.Rows.Count; j++) { xlWk.Cells[j + 2, i + 1] = dt.Rows[j][fieldNames[i]].ToString(); } } } For whatever reason, dumping DataTable of 25 columns and 400 rows takes about 10-15 seconds on my relatively modern PC. Takes even longer testers' machines. Is there anything I can do to speed up this code? Or is interop just inherently slow?

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  • How can I fix "Databinding methods such as Eval(), XPath(), and Bind() can only be used in the conte

    - by slolife
    I have a user control (ascx) that I have added two public properties to: RequestTypeId and GroupId. Both have the attribute set. In my aspx page, I have a ListView, and in the ItemTemplate, I place my control reference, like so: <ctrl:ServiceTypeGroup runat="server" RequestTypeId="<%#RequestType.RequestTypeId%>" GroupId='<%#Eval("Id").ToString()%>' /> Setting the RequestTypeId works fine. Setting the GroupId fails with the following error: "Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control." What do I need to do to my user control code to allow binding a Eval() expression to one of its properties? Or is it not possible?

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  • Simple question about C# if else statement

    - by ilkdrl
    Iam doing a simple website and when i press button, i should see weight in label.. i see but if text.maxlenght 6, i should see ERROR message in same label but repeat see weight in label. How can i solve this problem? protected void Button1_Click(object sender, EventArgs e) { double sayi1, sayi2, sayi3, hesap, sonuc; sayi1 = Convert.ToDouble(Tb1.Text); sayi2 = Convert.ToDouble(Tb2.Text); sayi3 = Convert.ToDouble(Tb3.Text); if (Tb1.MaxLength > 6 || Tb2.MaxLength > 6) { lbl1.Text = "ERROR."; } else { hesap = (((sayi1 - ((sayi1 - sayi2) / 2)) * ((sayi1 - sayi2) / 2)) / 40); sonuc = (hesap * sayi3) / 100; lbl1.Text = sonuc.ToString() + "kg"; } }

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  • Is it possible to create an enum whose object can't be created but can be used for readonly purpose

    - by Shantanu Gupta
    I created an enum where I stored some table names. I want it to be used to get the name of the table like ds.Tables[BGuestInfo.TableName.L_GUEST_TYPE.ToString()]. public enum TableName : byte { L_GUEST_TYPE = 0 ,L_AGE_GROUP = 1 ,M_COMPANY = 2 ,L_COUNTRY = 3 ,L_EYE_COLOR = 4 ,L_GENDER = 5 ,L_HAIR_COLOR = 6 ,L_STATE_PROVINCE = 7 ,L_STATUS = 8 ,L_TITLE = 9 ,M_TOWER = 10 ,L_CITY = 11 ,L_REGISTER_TYPE = 12 } This is my enum. Now I have not created any object of this enum so that no one can use it for other than read only purpose. For this enum to be accessible in outer classes as well I have to make it public which means some outer class can create its object as well. So what can i do so as to restrict its object creation.

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  • Hide New / Actions / Upload / Settings menus in SharePoint Lists / document libraries

    - by zikoziko
    How can I hide the New / Actions / Upload / Settings menus within a list or document library in SharePoint? Note that I need to be able to hide these menus for a particular list definition (template) and not just all lists or document libraries. One possible way that I know of is to register a , and set the ControlClass element to a control that inherits from WebControl. In the WebControl, I can override OnPreRender, which then does this: foreach (Control control in this.Parent.Controls) { if (control.ToString() == "Microsoft.SharePoint.WebControls.NewMenu") { control.Visible = false; } // etc } This is pretty hacky, and I was just wondering if there is a better way of doing it?

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  • C# How to place a comma after each word but the last in the list

    - by user576712
    I totally new to C# and learning as I go. I am stuck on issue which I'm hoping an experienced programmer can help. I have added a CheckedListBox to my form and added a collection of 6 items to it. I need all but the last item selected to have a comma placed beside it, so my question is: how can I tell C# NOT to place a comma beside the last item selected? foreach (object itemChecked in RolesCheckedListBox.CheckedItems) { sw.Write(itemChecked.ToString() + ","); } Thanks for any help received! Dan

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  • Debugging ASP.NET in VS

    - by negligible
    A lot of what I'm doing at the moment is figuring out other peoples code and adding or adapting functions, so currently I am debugging more than I am writing code of my own. I'm still new to this, Junior Developer, and I am always finding new ways to improve what I am doing. For example I recently found This Guide which had some excellent tips, such as overriding the ToString() method in your classes so children are readable from their parents. So I am looking for any other tips or tricks to make my debugging more efficient, as I recognise it as a big part of programming, that you more experienced programmers may have picked up or found. Anything appreciated, I can read websites just fine so no need to explain it yourself if you have a good link!

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  • Apache HTTPClient returns an empty page

    - by mariosangiorgio
    Hi, I am using the Apache HTTPClient for Java and I'm facing a really strange issue. Sometimes when I try to get a dynamically generated page it returns its actual content, but other times (with another parameter) all I get is a short sequence of \t,\r and \n. How could I track what's going on on the different cases in order to find where is the bug? My usage of the library is pretty straightforward, all I do is this few calls on an initialized HTTPClient object: String content = "/pageIwant.jsp?parameter=10101010"; HttpGet request = new HttpGet(content); HttpResponse response = client.execute(targetHost, request); HttpEntity entity = response.getEntity(); String page = EntityUtils.toString(entity);

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  • SslStream.ReadByte() blocks thread?

    - by alex
    I'm trying to write an Imap4 client. For that I use a SslStream to Connect to the Server. Everything's fine until I send the "Login" command. When I try to get an Answer to it, SslStream.ReadByte() block the thread. The result is that my programm crashes always. Whats happening here?? Code: if (ssl) { s = stream; } int cc = 0; MessageBox.Show("entered"); while (true) { int xs = s.ReadByte(); MessageBox.Show(xs.ToString()); if (xs > 0) { buf.Add((byte)xs); cc++; if (xs == '\n') { break; } if (cc > 10) MessageBox.Show(en.GetString(buf.ToArray())); } else { break; } } MessageBox.Show("left");

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  • How to get the computer name (hostname in a web aplication)?

    - by Filipe
    Hi, how can I get the client's computer name in a web application. The user in a network. Regards // Already tryed this option string IP = System.Web.HttpContext.Current.Request.UserHostAddress; string compName = DetermineCompName(IP); System.Net.IPHostEntry teste = System.Net.Dns.GetHostEntry(IP); ssresult = IP + " - " + teste.HostName; // TODO: Write implementation for action private static string DetermineCompName(string IP) { IPAddress myIP = IPAddress.Parse(IP); IPHostEntry GetIPHost = Dns.GetHostEntry(myIP); string[] compName = GetIPHost.HostName.ToString().Split('.'); return compName[0]; } All of that, gives me only the IP :/

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  • How to detect if a form input element of type file is empty

    - by Ankur
    I have some code which reads a file through a form field of type file <input type="file" ... /> I want to give the user another option of providing a url to a file rather than having to upload it as many are already online. How can I detect when this field is empty on the server side. I am using Apache Commons FileUpload FileItemStream item = iter.next(); name = item.getFieldName(); stream = item.openStream(); if(!item.isFormField()){ if(item.toString()!=""){ .... I need to detect when item is empty. The above code doesn't work, nor does using: if(item.equals(null)){ ....

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  • .Net - interop assemblies taking 15 seconds to load when being referenced in a function

    - by Jon
    This is a C# console application. I have a function that does something like this: static void foo() { Application powerpointApp; Presentation presentation = null; powerpointApp = new Microsoft.Office.Interop.PowerPoint.ApplicationClass(); } That's all it does. When it is called there is a fifteen second delay before the function gets hit. I added something like this: static void MyAssemblyLoadEventHandler(object sender, AssemblyLoadEventArgs args) { Console.WriteLine(DateTime.Now.ToString() + " ASSEMBLY LOADED: " + args.LoadedAssembly.FullName); Console.WriteLine(); } This gets fired telling me that my interop assemblies have been loaded about 10 milliseconds before my foo function gets hit. What can I do about this? The program needs to call this function (and eventually do something else) once and then exit so I need for these assemblies to be cached or something. Ideas?

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  • Storing the records in csv file from datatable.

    - by Harikrishna
    I have datatable and I am displaying those values in the datagridview with the helping of code : dataGridView1.ColumnCount = TableWithOnlyFixedColumns.Columns.Count; dataGridView1.RowCount = TableWithOnlyFixedColumns.Rows.Count; for (int i = 0; i < dataGridView1.RowCount; i++) { for (int j = 0; j < dataGridView1.ColumnCount; j++) { dataGridView1[j, i].Value = TableWithOnlyFixedColumns.Rows[i][j].ToString(); } } TableExtractedFromFile.Clear(); TableWithOnlyFixedColumns.Clear(); Now I want to save the records in the datatable in csv file.How can I do that ?

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  • How to correctly hook and return GetDlgItemTextA from C++ to C# to C++ from EasyHook

    - by Gbps
    I'm using EasyHook, a C# library for injecting and detouring functions from unmanaged applications. I'm trying to hook onto GetDlgItemTextA, which takes the arguments: UINT WINAPI GetDlgItemText( __in HWND hDlg, __in int nIDDlgItem, __out LPTSTR lpString, __in int nMaxCount );` In my hook, I am casting it as: [DllImport("user32.dll", // CharSet = CharSet.Unicode, SetLastError = true, CallingConvention = CallingConvention.StdCall)] static extern uint GetDlgItemTextA(IntPtr hWin, int nIDDlgItem, StringBuilder text, int MaxCount); And my hook is: static uint DGetDlgItemText_Hooked(IntPtr hWin, int nIDDlgItem, StringBuilder text, int MaxCount) { // call original API... uint ret = GetDlgItemTextA(hWin, nIDDlgItem, text, MaxCount); MessageBox.Show(text.ToString()); return ret; } Unfortunately, the moment this is called, the hooked application crashes. Is there a better cast I can use to successfully hook onto this function? Thanks! I've compiled, editted, and confirmed the working condition of my EasyHook setup. This is just casing and hooking only.

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  • What is the fastest method to calculate substring

    - by Misha Moroshko
    I have a huge "binary" string, like: 1110 0010 1000 1111 0000 1100 1010 0111.... It's length is 0 modulo 4, and may reach 500,000. I have also a corresponding array: {14, 2, 8, 15, 0, 12, 10, 7, ...} (every number in the array corresponds to 4 bits in the string) Given this string, this array, and a number N, I need to calculate the following substring string.substr(4*N, 4), i.e.: for N=0 the result should be 1110 for N=1 the result should be 0010 I need to perform this task many many times, and my question is what would be the fastest method to calculate this substring ? One method is to calculate the substring straight forward: string.substr(4*N, 4). I'm afraid this one is not efficient for such huge strings. Another method is to use array[N].toString(2) and then wrap the result with zeros if needed. I'm not sure how fast is this. May be you have any other ideas ?

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  • asp.net refresh part of page whit jquery when application state change

    - by Jeson Park
    i use Application property to count number of online users Application["OnlineUsers"] = (int)Application["OnlineUsers"] + 1; and then bind Application property value to HTML tag <div id="OnlineUser" > <span>Number of Online Users is <%=Application["OnlineUsers"].ToString() %></span> </div> when for example "user1" visit page,DIV tag show "Number of Online Users is 1" and "user2" visit page,DIV tag show "Number of Online Users is 2" but user1 still "Number of Online Users is 1" how do i refresh user1 page when user2 change application peroperty?

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  • Zebra Label Printer with C#

    - by user3702654
    I'm having trouble printing a label using ZDesigner GK420T using C# .NET. I converted the following string to Bytes and passed into the printer. ^XA ^FO3,3^AD^FDZEBRA^FS ^XZ The expected outcome was that the printer was supposed to print 'ZEBRA' but it didn't. My C# Code: StringBuilder sb; sb = new StringBuilder(); if (frmPrintJob._type != 1) { sb.AppendLine("^XA"); sb.AppendLine("^FO3,3^AD^FDZEBRA^FS"); sb.AppendLine("^XZ"); } int intTotalPrinted = 0; for (int i = 1; i <= NoOfCopies; i++) { if (RawPrinterHelper.SendStringToPrinter(PrinterName, sb.ToString()) == true) intTotalPrinted++; } What am I doing wrong here? Do I need any extra code?

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  • how to access android app's certificate from inside the app?

    - by Yan
    Hi All, Im trying to access the certificate/signature from inside an android app, so that I can do something with the certificate. I googled a bit and found the code below: Class c = getClass(); ProtectionDomain pd = c.getProtectionDomain(); CodeSource cs = pd.getCodeSource(); Certificate[] signingCertificates = cs.getCertificates(); String st = signingCertificates[0].toString(); but c.getProtectionDomain() returns null. anyone can help? many thanks.

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  • Context Menu SourceControl Error

    - by developer
    Hi All, I am trying to use contextmenu in my textbox control and I want to bind the textbox value to the value selected in context menu,below is my code <Window.CommandBindings> <CommandBinding Command="local:MyPanel.ChangeTextboxValue" Executed="ChangeTextboxValue_Executed"/> </Window.CommandBindings> CODE-BEHIND public static RoutedUICommand ChangeTextboxValue = new RoutedUICommand ("ChangeTextboxValue", "ChangeTextboxValue", typeof(MyPanel)); private void ChangeTextboxValue_Executed(object sender, ExecutedRoutedEventArgs e) { string oldvalue = Convert.ToString(e.Parameter); (((sender as MenuItem).Parent as ContextMenu).PlacementTarget as TextBox).Text = oldvalue; } oldvalue is the value I want the textbox controls value to change to. I am trying to use above code but it gives me the error, 'Object reference not set to an instance of object'. I tried to debug the app and I get ContextMenu as null.. .Any ideas why??

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  • How to use Console with a Winform App ?

    - by asksuperuser
    Let's say I have some code inside a Winform. I'd also like to output to Console like this: Reader = command.ExecuteReader(); while (Reader.Read()) { string thisrow = ""; for (int i = 0; i < Reader.FieldCount; i++) thisrow += Reader.GetValue(i).ToString() + ","; Console.WriteLine(thisrow); } connection.Close(); It doesn't crash but I can't see any console. Why ?

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  • How can you get the first digit in an int (C#)?

    - by Dinah
    In C#, what's the best way to get the 1st digit in an int? The method I came up with is to turn the int into a string, find the 1st char of the string, then turn it back to an int. int start = Convert.ToInt32(curr.ToString().Substring(0, 1)); While this does the job, it feels like there is probably a good, simple, math-based solution to such a problem. String manipulation feels clunky. Edit: irrespective of speed differences, mystring[0] instead of Substring() is still just string manipulation

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  • URLEncode Error

    - by user2949519
    I have an Android app. Basically what it does is that user can search a car reference no. in EditText for example:- 270/30 and retrieve all the details of the particular car with the same column value in the database. I'm encoding this editext value in Android using URLEncoder and decoding it back in php webservice code. But the decoded value im getting is 027/13 ....instead of 270/30. To make it clear more im here by pasting my java Encoding part EditText SearchField=(EditText)findViewById(R.id.editText1); String SearchValue= SearchField.getText().toString(); Now the encoding code in Asynctask is data +="&" + URLEncoder.encode("data", "UTF-8") + "="+SearchValue; Now the PHP part where i decoded this code $data = urldecode($_POST['data']); Please help me how to encode/decode this given format ... Thanks in Advance

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  • Create link to Sitecore Item

    - by Zooking
    I know I have done this before but I can't seem to remember where or how. I want to create a link to an Item in Sitecore. This code: Sitecore.Data.Items.Item itm = Sitecore.Context.Database.GetItem(someID); return itm.Paths.Path.ToString(); Produces the following string: http://localhost/sitecore/content/Home/Item1/Item11/thisItem I would like to have this string instead: http://localhost/Item1/Item11/thisItem.aspx What is the correct way to get the path to the item? In this case I can't use a normal Sitecore link: Sitecore.Web.UI.WebControls.Link

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