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  • Value cannot be null.Parameter name: key when databind in ASP.NET

    - by Yongwei Xing
    Hi all I am triing to bind the data to a listbox from sql server then got the error "Value cannot be null.Parameter name: key" sqlCommand = "SELECT [Country] FROM [tbl_LookupCountry] where [Country] IS NOT NULL"; SqlConnection sqlConCountry = new SqlConnection(connectString); SqlCommand sqlCommCountry = new SqlCommand(); sqlCommCountry.Connection = sqlConCountry; sqlCommCountry.CommandType = System.Data.CommandType.Text; sqlCommCountry.CommandText = sqlCommand; sqlCommCountry.CommandTimeout = 300; sqlConCountry.Open(); reader = sqlCommCountry.ExecuteReader(); ddlCountry.DataSource = reader; ddlCountry.DataBind(); sqlConCountry.Close(); Does anyone meet this problem before?

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  • How to open save dialog box for saving pdf

    - by Mutturaj Bali
    I truly appreciate your suggestions. I am using MVC3 and I want user to save to his own path by opening a dialog with password protected. Can you guys please help me on this. Below is my code: mydoc.GenerateLetter(PdfData); string WorkingFolder = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments); using (MemoryStream m = new MemoryStream()) { m.Write(mydoc.DocumentBytes, 0, mydoc.DocumentBytes.Length); m.Seek(0, SeekOrigin.Begin); string OutputFile = Path.Combine(WorkingFolder, PdfData.Name + ".pdf"); using (Stream output = new FileStream(OutputFile, FileMode.Create, FileAccess.Write, FileShare.None)) { PdfReader reader = new PdfReader(m); PdfEncryptor.Encrypt(reader, output, true, "abc123", "secret", PdfWriter.ALLOW_SCREENREADERS); } }

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  • Why this code works with jquery 1.3.2 but not with 1.4.2?

    - by metal-gear-solid
    this code var tip = "<p class="adobe-reader-download">Most computers will open PDF documents automatically, but you may need to download <a title='Link to Adobe website-opens in a new window'"; tip +=" href='http://www.adobe.com/products/acrobat/readstep2.html' target='_blank'>Adobe Reader</a>.</p>"; if($("div#maincontent a[href*='.pdf']").length>0){ $("div#maincontent").children(":last-child").after(tip); works fine with this <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"></script> but not working with this <script type="text/jscript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"> </script>

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  • How to read and write UTF-8 to disk on the Android?

    - by Rob Kent
    I cannot read and write extended characters (French accented characters, for example) to a text file using the standard InputStreamReader methods shown in the Android API examples. When I read back the file using: InputStreamReader tmp = new InputStreamReader(in); BufferedReader reader = new BufferedReader(tmp); String str; while ((str = reader.readLine()) != null) { ... the string read is truncated at the extended characters instead of at the end-of-line. The second half of the string then comes on the next line. I'm assuming that I need to persist my data as UTF-8 but I cannot find any examples of that, and I'm new to Java. Can anyone provide me with an example or a link to relevant documentation?

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  • Extracting property names from a c# source file

    - by Pete
    I want to parse a c# file. The only thing I want is to determine if it contains a property with a specific name; just a simple true/false response. Or rather, since I'd checking for more than one property in each run, extracting a list of property names could be helpful I thought that I could create an elegant solution using the CodeDomProvider functionality (f# example): use reader = new StreamReader(existingFile) let codeProvider = new CSharpCodeProvider() let codeUnit = codeProvider.Parse(reader) Unfortunately, the Parse function is not implemented for the CSharpCodeProvider. Is there a way to get a CodeCompileUnit from a source file? Or is there another elegant way? (I had hoped to avoid regular expressions on this)?

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  • HttpWebRequest possibly slowing website

    - by Steven Smith
    Using Visual studio 2012, C#.net 4.5 , SQL Server 2008, Feefo, Nopcommerce Hey guys I have Recently implemented a new review service into a current site we have. When the change went live the first day all worked fine. Since then though the sending of sales to Feefo hasnt been working, There are no logs either of anything going wrong. In the OrderProcessingService.cs in Nop Commerce's Service, i call a HttpWebrequest when an order has been confirmed as completed. Here is the code. var email = HttpUtility.UrlEncode(order.Customer.Email.ToString()); var name = HttpUtility.UrlEncode(order.Customer.GetFullName().ToString()); var description = HttpUtility.UrlEncode(productVariant.ProductVariant.Product.MetaDescription != null ? productVariant.ProductVariant.Product.MetaDescription.ToString() : "product"); var orderRef = HttpUtility.UrlEncode(order.Id.ToString()); var productLink = HttpUtility.UrlEncode(string.Format("myurl/p/{0}/{1}", productVariant.ProductVariant.ProductId, productVariant.ProductVariant.Name.Replace(" ", "-"))); string itemRef = ""; try { itemRef = HttpUtility.UrlEncode(productVariant.ProductVariant.ProductId.ToString()); } catch { itemRef = "0"; } var url = string.Format("feefo Url", login, password,email,name,description,orderRef,productLink,itemRef); var request = (HttpWebRequest)WebRequest.Create(url); request.KeepAlive = false; request.Timeout = 5000; request.Proxy = null; using (var response = (HttpWebResponse)request.GetResponse()) { if (response.StatusDescription == "OK") { var stream = response.GetResponseStream(); if(stream != null) { using (var reader = new StreamReader(stream)) { var content = reader.ReadToEnd(); } } } } So as you can see its a simple webrequest that is processed on an order, and all product variants are sent to feefo. Now: this hasnt been happening all week since the 15th (day of the implementation) the site has been grinding to a halt recently. The stream and reader in the the var content is there for debugging. Im wondering does the code redflag anything to you that could relate to the process of website? Also note i have run some SQL statements to see if there is any deadlocks or large escalations, so far seems fine, Logs have also been fine just the usual logging of Bots. Any help would be much appreciated! EDIT: also note that this code is in a method that is called and wrapped in A try catch UPDATE: well forget about the "not sending", thats because i was just told my code was rolled back last week

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  • Python implementation of avro slow?

    - by lazy1
    I'm reading some data from avro file using the avro library. It takes about a minute to load 33K objects from the file. This seem very slow to me, specially with the Java version reading the same file in about 1sec. Here is the code, am I doing something wrong? import avro.datafile import avro.io from time import time def load(filename): fo = open(filename, "rb") reader = avro.datafile.DataFileReader(fo, avro.io.DatumReader()) for i, record in enumerate(reader): pass return i + 1 def main(argv=None): import sys from argparse import ArgumentParser argv = argv or sys.argv parser = ArgumentParser(description="Read avro file") start = time() num_records = load("events.avro") end = time() print("{0} records in {1} seconds".format(num_records, end - start)) if __name__ == "__main__": main()

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  • When RDP as a Domain User, Smart Card Requested

    - by Paul
    My W8 machine is connected to domain zen. If I rdp to the W8 machine, I can log in as a local user without problems. If I try to log in as a domain user, I am prompted for a smart card instead of a password. Any ideas why? Note that Interactive login: require smart card is disabled in group policy: And here is the output from rsop.msc: Some additional information on this one. If my connecting machine is on the same domain/network as the W8 machine, then I am prompted for a password as usual. If the machine is remote, on a different domain, then I am prompted for a smart card. In addition, the machine I am connecting from that gets the smartcard prompt is an XP box. I haven't isolated exactly which of these factors triggers the different response.

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  • java reflection

    - by user622222
    Hi all, System.out.println("Class name : "); BufferedReader reader= new BufferedReader(new InputStreamReader(System.in)); String line = reader.readLine(); Class<?> writeoutClass = Class.forName(line); Method Writeout = null; for (Method mth : writeoutClass.getDeclaredMethods()) { if (mth.getName().startsWith("Writeout")) { Writeout = mth; break; } It's giving error like that; java.lang.ClassNotFoundException: a How can i generate that class?

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  • problem with JsonStore and JsonReader

    - by kalan
    Hello, In my ExtJS application I use EditorGridPanel to show data from server. var applicationsGrid = new Ext.grid.EditorGridPanel({ region: 'west', layout: 'fit', title: '<img src="../../Content/img/app.png" /> ??????????', collapsible: true, margins: '0 0 5 5', split: true, width: '30%', listeners: { 'viewready': { fn: function() { applicationsGridStatusBar.setText('??????????: ' + applicationsStore.getTotalCount()); } } }, store: applicationsStore, loadMask: { msg: '????????...' }, sm: new Ext.grid.RowSelectionModel({ singleSelect: true, listeners: { 'rowselect': { fn: applicationsGrid_onRowSelect} } }), viewConfig: { forceFit: true }, tbar: [{ icon: '../../Content/img/add.gif', text: '????????' }, '-', { icon: '../../Content/img/delete.gif', text: '???????' }, '-'], bbar: applicationsGridStatusBar, columns: [{ header: '??????????', dataIndex: 'ApplicationName', tooltip: '???????????? ??????????', sortable: true, editor: { xtype: 'textfield', allowBlank: false } }, { header: '<img src="../../Content/img/user.png" />', dataIndex: 'UsersCount', align: 'center', fixed: true, width: 50, tooltip: '?????????? ????????????? ??????????', sortable: true }, { header: '<img src="../../Content/img/role.gif" />', dataIndex: 'RolesCount', align: 'center', fixed: true, width: 50, tooltip: '?????????? ????? ??????????', sortable: true}] }); When I use JsonStore without reader it works, but when I try to update any field it uses my 'create' url instead of 'update'. var applicationsStore = new Ext.data.JsonStore({ root: 'applications', totalProperty: 'total', idProperty: 'ApplicationId', messageProperty: 'message', fields: [{ name: 'ApplicationId' }, { name: 'ApplicationName', allowBlank: false }, { name: 'UsersCount', allowBlank: false }, { name: 'RolesCount', allowBlank: false}], id: 'app1234', proxy: new Ext.data.HttpProxy({ api: { create: '/api/applications/getapplicationslist1', read: '/api/applications/getapplicationslist', update: '/api/applications/getapplicationslist2', destroy: '/api/applications/getapplicationslist3' } }), autoSave: true, autoLoad: true, writer: new Ext.data.JsonWriter({ encode: false, listful: false, writeAllFields: false }) }); I believe that the problem is that I don't use reader, but when I use JsonReader grid stops showing any data at all. var applicationReader = new Ext.data.JsonReader({ root: 'applications', totalProperty: 'total', idProperty: 'ApplicationId', messageProperty: 'message', fields: [{ name: 'ApplicationId' }, { name: 'ApplicationName', allowBlank: false }, { name: 'UsersCount', allowBlank: false }, { name: 'RolesCount', allowBlank: false}] }); var applicationsStore = new Ext.data.JsonStore({ id: 'app1234', proxy: new Ext.data.HttpProxy({ api: { create: '/api/applications/getapplicationslist1', read: '/api/applications/getapplicationslist', update: '/api/applications/getapplicationslist2', destroy: '/api/applications/getapplicationslist3' } }), reader: applicationReader, autoSave: true, autoLoad: true, writer: new Ext.data.JsonWriter({ encode: false, listful: false, writeAllFields: false }) }); So, does anyone know what the problem might be and how to solve it. The data returned from my server is Json-formated and seams to be ok {"message":"test","total":2,"applications":[{"ApplicationId":"f82dc920-17e7-45b5-98ab-03416fdf52b2","ApplicationName":"Archivist","UsersCount":6,"RolesCount":3},{"ApplicationId":"054e2e78-e15f-4609-a9b2-81c04aa570c8","ApplicationName":"Test","UsersCount":1,"RolesCount":0}]}

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  • Write file at a specific value and line

    - by user2828891
    I want to write data at a specified value in a text file from a text box. Here is a example: item_begin etcitem 3344 item_type=etcitem is first line and item_begin weapon 3343 item_type=weapon is second. Well i want to replace item_type=weapon at second line with item_type=armor. Here is code so far: var data2 = File.WriteAllLines("itemdata.txt") .Where(x => x.Contains("3343")) .Take(1) .SelectMany(x => x.Split('\t')) .Select(x => x.Split('=')) .Where(x => x.Length > 1) .ToDictionary(x => x[0].Trim(), x => x[1]); But returns error at WriteAllLines. Here is the readline part code: var data = File.ReadLines("itemdata.txt") .Where(x => x.Contains("3343")) .Take(1) .SelectMany(x => x.Split('\t')) .Select(x => x.Split('=')) .Where(x => x.Length > 1) .ToDictionary(x => x[0].Trim(), x => x[1]); //call values textitem_type.Text = data["item_type"]; And want to write the same value I change on textitem_type.Text after read. I used this to reaplace but replaces all values with same name from line and returns me in text only 1 line. Code: private void button2_Click(object sender, EventArgs e) { var data = File .ReadLines("itemdata.txt") .Where(x => x.Contains(itemSrchtxt.Text)) .Take(1) .SelectMany(x => x.Split('\t')) .Select(x => x.Split('=')) .Where(x => x.Length > 1) .ToDictionary(x => x[0].Trim(), x => x[1]); StreamReader reader = new StreamReader(Directory.GetCurrentDirectory() + @"\itemdata.txt"); string content = reader.ReadLine(); reader.Close(); content = Regex.Replace(content, data["item_type"], textitem_type.Text); StreamWriter write = new StreamWriter(Directory.GetCurrentDirectory() + @"\itemdata.txt"); write.WriteLine(content); write.Close(); }

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  • How to Identify the website's content language

    - by Ajay
    I am developing a website to crawl the other website content in ASP.NET . I am able to get the content correctly but how can I identify which language is used based on that content. I used following code. HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(TextBox1.Text ); request.UserAgent = "A .NET Web Crawler"; WebResponse response = request.GetResponse(); Stream stream = response.GetResponseStream(); StreamReader reader = new StreamReader(stream); string htmlText = reader.ReadToEnd();

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  • Phase REST XML into variable

    - by 001
    I want to get a response from the REST XML web service, and phase it into variables so I can use them in my program. 1) How come this code does not work? I get an empty string... // Get response string ws_response=""; using (HttpWebResponse response = request.GetResponse() as HttpWebResponse) { // Get the response stream StreamReader reader = new StreamReader(response.GetResponseStream()); // web service response string ws_response = reader.ReadToEnd; // <---???? I get an empty string // do phasing here (ie XML element into variable) etc.. // }

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  • complex thinking on simple java challenge, how can i fix it?

    - by Rachel
    Simple stuff but somehow not able to crack it, below piece of code is throwing unexpected token at try/catch and unhandled exception:java.io.FileNotFound String fileName = "C:\\GS.xlsx"; try{ CSVReader reader = new CSVReader(new FileReader(fileName)); }catch(Exception e){ } What is the possible issue in here, i know there is something really goofy that am doing in here... public class PositionParserGS { String fileName = "C:\\GS.xlsx"; try{ CSVReader reader = new CSVReader(new FileReader(fileName)); }catch(Exception e){ } } that's the complete code...

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  • How to read binary column in database into image on asp.net page?

    - by marko
    I want to read from database where I've stored a image in binary field and display a image. while (reader.Read()) { byte[] imgarr = (byte[])reader["file"]; Stream s = new MemoryStream(imgarr); System.Drawing.Image image = System.Drawing.Image.FromStream(s); Graphics g = Graphics.FromImage(image); g.DrawImage(image, new Point(400, 10)); image.Save(Response.OutputStream, ImageFormat.Jpeg); g.Dispose(); image.Dispose(); } con.Close(); This piece of code doesn't work: System.Drawing.Image image = System.Drawing.Image.FromStream(s); What am I doing wrong?

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  • How to read a XML format file to memory in C#?

    - by Nano HE
    // .net 2.0 and vs2005 used. I find some code below. I am not sure I can extended the sample code or not? thank you. if (radioButton.Checked) { MemoryStream ms=new MemoryStream(); byte[] data=ASCIIEncoding.ASCII.GetBytes(textBox1.Text); ms.Write(data,0,data.Length); reader = new XmlTextReader(ms); //some procesing code ms.Close(); reader.Close(); } BTW, Could you please help me to do some dissection about the line below. byte[] data=ASCIIEncoding.ASCII.GetBytes(textBox1.Text);

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  • How to resize pdf graphics produced in R using Illustrator

    - by user1648516
    I am making plots in R using the pdf() command. Graphs look perfect and resize nicely in Acrobat Reader. My usual workflow includes manipulating labels etc. in Illustrator, saving as .eps for submission to publishers or inserting in Word. All works fine for single graphs. Now I am trying to combine 4 graphs into one by manually putting them together in an A4 Illustrator document. However, when I resize the standard 7x7 inches pdf graph in Illustrator to fit in one column of an A4 page (ca 3.4 inches wide), all proportions get screwed up, e.g. lines and symbols outlines become way too thick. Using pdf(..., width=3.4, height=3.4) in R messes up all the symbol and font sizes so carefully chosen to produce the original graph. Why can't I resize the graph within Illustrator the same way I can resize the pdf e.g. in Acrobat Reader?

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  • What is the most efficient way to read many bytes from SQL Server using SqlDataReader (C#)

    - by eccentric
    Hi everybody! What is the most efficient way to read bytes (8-16 K) from SQL Server using SqlDataReader. It seems I know 2 ways: byte[] buffer = new byte[4096]; MemoryStream stream = new MemoryStream(); long l, dataOffset = 0; while ((l = reader.GetBytes(columnIndex, dataOffset, buffer, 0, buffer.Length)) > 0) { stream.Write(buffer, 0, buffer.Length); dataOffset += l; } and reader.GetSqlBinary(columnIndex).Value The data type is IMAGE

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  • Microsoft Enterprise Logging Application Block - Reading Log File

    - by Or A
    Hi, I'm using MS log application block for logging my application event into a file called app-trace.log which located on the c:\temp folder. I'm trying to find the best way to read this file at runtime and display it when the user asks for it. now i have 2 issues: it seems that this kind of feature is not supported by the framework, hence i have to write this reader myself. am i missing something here? is there any better way of getting this data (w/o buffering it in the memory or saving it into another file). if i'm taking the only alternative that left for me, and implementing the reader myself, when i'm tring to do: System.IO.FileStream fs = new System.IO.FileStream(@"c:\temp\app-trace.log", FileMode.Open, FileAccess.Read); i'm getting "File being used by another process c#", probably the file is locked by the application block. is there any way to access and read it anyhow? Thank

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  • php connection using HttpWebRequest and Get method

    - by Ahmet vardar
    Hi, i have a script returns some string, http://mysite.com/script.php php script; $data = $_GET['q']; $query = "SELECT * FROM `table` WHERE ID = '$data'"; $result = mysql_query($query); $num = mysql_num_rows($result); print $num; i want to connect this script with VB, using this code Dim con As String con = "http://mysite.com/script.php?q=" & My.Settings.setq Dim request = HttpWebRequest.Create(con) request.Method = "GET" Dim response = request.GetResponse() Using reader = New StreamReader(response.GetResponseStream()) msgbox(reader.ReadToEnd()) End Using it is not working. how can i do that ? thanks

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  • Reading a simple Avro file from HDFS

    - by John Galt... who
    I am trying to do a simple read of an Avro file stored in HDFS. I found out how to read it when it is on the local file system.... FileReader reader = DataFileReader.openReader(new File(filename), new GenericDatumReader()); for (GenericRecord datum : fileReader) { String value = datum.get(1).toString(); System.out.println("value = " value); } reader.close(); My file is in HDFS, however. I cannot give the openReader a Path or an FSDataInputStream. How can I simply read an Avro file in HDFS? EDIT: I got this to work by creating a custom class (SeekableHadoopInput) that implements SeekableInput. I "stole" this from "Ganglion" on github. Still, seems like there would be a Hadoop/Avro integration path for this. Thanks

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  • Writing to CSV issue in Spyder

    - by 0003
    I am doing the Kaggle Titanic beginner contest. I generally work in Spyder IDE, but I came across a weird issue. The expected output is supposed to be 418 rows. When I run the script from terminal the output I get is 418 rows (as expected). When I run it in Spyder IDE the output is 408 rows not 418. When I re-run it in the current python process, it outputs the expected 418 rows. I posted a redacted portion of the code that has all of the relevant bits. Any ideas? import csv import numpy as np csvFile = open("/train.csv","ra") csvFile = csv.reader(csvFile) header = csvFile.next() testFile = open("/test.csv","ra") testFile = csv.reader(testFile) testHeader = testFile.next() writeFile = open("/gendermodelDebug.csv", "wb") writeFile = csv.writer(writeFile) count = 0 for row in testFile: if row[3] == 'male': do something to row writeFile.writerow(row) count += 1 elif row[3] == 'female': do something to row writeFile.writerow(row) count += 1 else: raise ValueError("Did not find a male or female in %s" % row)

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  • download html source android?

    - by mars
    I'm trying to download a website source code and display it in a textbox but I seem to get an error and can't figure it out :s public void getHtml() throws ClientProtocolException, IOException { HttpClient httpClient = new DefaultHttpClient(); HttpContext localContext = new BasicHttpContext(); HttpGet httpGet = new HttpGet("http://www.spartanjava.com"); HttpResponse response = httpClient.execute(httpGet, localContext); String result = ""; BufferedReader reader = new BufferedReader( new InputStreamReader( response.getEntity().getContent() ) ); String line = null; while ((line = reader.readLine()) != null){ result += line + "\n"; Toast.makeText(activity.this, line.toString(), Toast.LENGTH_LONG).show(); } } how come this doesn't work and throw an IOException?

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  • If statements Evaluations

    - by user2464795
    Using the code below I get this result even though I put in a number that is greater than 18. run: How old are you? 21 You have not reached the age of Majority yet! BUILD SUCCESSFUL (total time: 3 seconds) I am new to java and trying to self learn can anybody help? import java.util.Scanner; public class Chapter8 { /** * @param args the command line arguments */ public static void main(String[] args) { Scanner reader = new Scanner (System.in); // TODO code application logic here //Excercise 15 System.out.print("How old are you? "); int x = Integer.parseInt(reader.nextLine()); if (x > 18){ System.out.println("You have not reached the age of Majority yet!"); }else { System.out.println("You have reached the age of Majority!"); }

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