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  • automatic link submission in search engine

    - by Bharanikumar
    Hi , in Google i find one open source search engine , This Open Source This is my first search engine project , This si one open source , In this site, There is a link called ADD link , There visitor will add his/her site , Then admin will look and later , admin index the user added links , this is basic functionality of this open source, My doubt is How Google really fetch and produce the search result , Yes there is one way ,i know , The user add his site in Google so Google cron the contents , But one of my site , am not added in google but google croned , i dont know how it is ? Ok come to my doubt , i want to add other site automatically, wihtout manual , really is it possible or not , What steps i should follow for that ? Regards Bharanikumar

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  • programming question

    - by shivam
    using System; using System.Data; using System.Collections.Generic; using System.ComponentModel; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Data.SqlClient; namespace datasynchronization { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { string connectString = @"Data Source=MOON\SQL2005;Initial Catalog=databaseA;Integrated Security=True"; using (var srcCon = new SqlConnection(connectString)) //connection to source table { srcCon.Open();//source table connection open SqlCommand cmd = new SqlCommand();// sqlobject for source table cmd.Connection = srcCon; string connectionString = @"Data Source=MOON\SQL2005;Initial Catalog=databaseB;Integrated Security=True"; using (var tgtCon = new SqlConnection(connectionString)) //connection to target table { tgtCon.Open(); //target table connection open SqlCommand objcmd1 = new SqlCommand();//sqlobject for target table objcmd1.Connection = tgtCon; objcmd1.CommandText = "SELECT MAX(date) FROM Table_2"; //query to findout the max date from target table var maxdate = objcmd1.ExecuteScalar(); // store the value of max date into the variable maxdate cmd.CommandText = string.Format("SELECT id,date,name,city,salary,region FROM Table_1 where date >'{0}'", maxdate); //select query to fetch rows from source table using (var reader = cmd.ExecuteReader()) { SqlCommand objcmd = new SqlCommand(); objcmd.Connection = tgtCon; objcmd.CommandText = "INSERT INTO Table_2(id,date,name,city,salary,region)VALUES(@id,@date,@name,@city,@salary,@region)"; objcmd.Parameters.Add("@id", SqlDbType.Int); objcmd.Parameters.Add("@date", SqlDbType.DateTime); objcmd.Parameters.Add("@name", SqlDbType.NVarChar); objcmd.Parameters.Add("@city", SqlDbType.NVarChar); objcmd.Parameters.Add("@salary", SqlDbType.Int); objcmd.Parameters.Add("@region", SqlDbType.Char); while (reader.Read()) { var order1 = reader[0].ToString(); var order2 = reader[1].ToString(); var order3 = reader[2].ToString(); var order4 = reader[3].ToString(); var order5 = reader[4].ToString(); var order6 = reader[5].ToString(); objcmd.Parameters["@id"].Value = order1; objcmd.Parameters["@date"].Value = order2; objcmd.Parameters["@name"].Value = order3; objcmd.Parameters["@city"].Value = order4; objcmd.Parameters["@salary"].Value = order5; objcmd.Parameters["@region"].Value = order6; objcmd.ExecuteNonQuery(); } } tgtCon.Close(); } srcCon.Close(); } } } } how can i organize the above written code in an efficient way?

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  • atk4 advanced crud?

    - by thindery
    I have the following tables: -- ----------------------------------------------------- -- Table `product` -- ----------------------------------------------------- CREATE TABLE IF NOT EXISTS `product` ( `id` INT NOT NULL AUTO_INCREMENT , `productName` VARCHAR(255) NULL , `s7location` VARCHAR(255) NULL , PRIMARY KEY (`id`) ) ENGINE = InnoDB; -- ----------------------------------------------------- -- Table `pages` -- ----------------------------------------------------- CREATE TABLE IF NOT EXISTS `pages` ( `id` INT NOT NULL AUTO_INCREMENT , `productID` INT NULL , `pageName` VARCHAR(255) NOT NULL , `isBlank` TINYINT(1) NULL , `pageOrder` INT(11) NULL , `s7page` INT(11) NULL , PRIMARY KEY (`id`) , INDEX `productID` (`productID` ASC) , CONSTRAINT `productID` FOREIGN KEY (`productID` ) REFERENCES `product` (`id` ) ON DELETE NO ACTION ON UPDATE NO ACTION) ENGINE = InnoDB; -- ----------------------------------------------------- -- Table `field` -- ----------------------------------------------------- CREATE TABLE IF NOT EXISTS `field` ( `id` INT NOT NULL AUTO_INCREMENT , `pagesID` INT NULL , `fieldName` VARCHAR(255) NOT NULL , `fieldType` VARCHAR(255) NOT NULL , `fieldDefaultValue` VARCHAR(255) NULL , PRIMARY KEY (`id`) , INDEX `id` (`pagesID` ASC) , CONSTRAINT `pagesID` FOREIGN KEY (`pagesID` ) REFERENCES `pages` (`id` ) ON DELETE NO ACTION ON UPDATE NO ACTION) ENGINE = InnoDB; I have gotten CRUD to work on the 'product' table. //addproduct.php class page_addproduct extends Page { function init(){ parent::init(); $crud=$this->add('CRUD')->setModel('Product'); } } This works. but I need to get it so that when a new product is created it basically allows me to add new rows into the pages and field tables. For example, the products in the tables are a print product(like a greeting card) that has multiple pages to render. Page 1 may have 2 text fields that can be customized, page 2 may have 3 text fields, a slider to define text size, and a drop down list to pick a color, and page 3 may have five text fields that can all be customized. All three pages (and all form elements, 12 in this example) are associated with 1 product. So when I create the product, could i add a button to create a page for that product, then within the page i can add a button to add a new form element field? I'm still somewhat new to this, so my db structure may not be ideal. i'd appreciate any suggestions and feedback! Could someone point me toward some information, tutorials, documentation, ideas, suggestions, on how I can implement this?

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  • GWT combobox not displaying correctly

    - by James
    Hi, I am using GWT with GWT-EXT running in glassfish. I create 2 combo boxes as follows: import com.extjs.gxt.ui.client.widget.form.ComboBox; import com.extjs.gxt.ui.client.widget.form.SimpleComboBox; this.contentPanel = new ContentPanel(); this.contentPanel.setFrame(true); this.contentPanel.setSize((int)(Window.getClientWidth()*0.95), 600); this.contentPanel.setLayout(new FitLayout()); initWidget(this.contentPanel); SimpleComboBox<String> combo = new SimpleComboBox<String>(); combo.setEmptyText("Select a topic..."); combo.add("String1"); combo.add("String2"); this.contentPanel.add(combo); ComboBox combo1 = new ComboBox(); combo1.setEmptyText("Select a topic..."); ListStore topics = new ListStore(); topics.add("String3"); topics.add("String4"); combo.setStore(topics); this.contentPanel.add(combo1); When these are loaded in the browser (IE 8.0, Firefox 3.6.6 or Chrome 10.0) the combo boxes are shown but don't have the pull down arrow. They look like a text field with the "Select a topic..." text. When you select the text it disappears and if you type a character and then delete it the options are shown (i.e. pull down is invoked) however, there is still no pull down arrow. Does anyone know what the issue might be? Or how I can investigate further? Is it possible to see the actual HTML the browser is getting, when I View Page Source I only get the landing page HTML. As an additional I also have a import com.google.gwt.user.client.ui.Grid that does not render correctly. It is in table format but has no grid lines or header bar etc. Cheers, James

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  • How to put a background image on GridBagLayout

    - by Loligans
    I am trying to work with layout managers for the first time, and they are just kicking me in the teeth. I am trying to make a background image and then put buttons on top, using GridBagLayout, if there is a a better layoutmanager please do tell. As for trying to learn how to use layout managers, its very difficult and any learning references would also be much appreciated. This is what it looks like currently, I can get the frame to show the full image, but when i use gridlayout manager, it does that public void addComponentsToPane(Container pane){ BackgroundImage image = new BackgroundImage(); JButton button1, button2, button3, button4, button5; pane.setLayout(new GridBagLayout()); GridBagConstraints c = new GridBagConstraints(); if(shouldFill){ c.fill = GridBagConstraints.NONE; } button1 = new JButton("Button 1"); if (shouldWeightX) { c.weightx = 0.5; } c.fill = GridBagConstraints.HORIZONTAL; c.gridx = 1; c.gridy = 0; button1.setOpaque(false); pane.add(button1, c); button2 = new JButton("Button 2"); c.fill = GridBagConstraints.HORIZONTAL; c.weightx = 0.5; c.gridx = 0; c.gridy = 0; button2.setOpaque(false); pane.add(button2, c); button3 = new JButton("Button 3"); c.fill = GridBagConstraints.HORIZONTAL; c.weightx = 0.5; c.gridx = 2; c.gridy = 0; button3.setOpaque(false); pane.add(button3, c); button4 = new JButton("Long-Named Button 4"); c.fill = GridBagConstraints.HORIZONTAL; c.ipady = 40; //make this component tall c.weightx = 0.0; c.gridwidth = 3; c.gridx = 0; c.gridy = 1; pane.add(button4, c); button5 = new JButton("button 1"); c.fill = GridBagConstraints.HORIZONTAL; c.ipady = 0; //reset to default c.weighty = 1.0; //request any extra vertical space c.anchor = GridBagConstraints.PAGE_END; //bottom of space c.insets = new Insets(10,0,0,0); //top padding c.gridx = 1; //aligned with button 2 c.gridwidth = 2; //2 columns wide c.gridy = 2; //third row pane.add(button5, c); c.ipadx = 800; c.ipady = 400; pane.add(image, c); } This is what i'm trying to make it look like

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  • ToolStripComboBox + objects default string value

    - by Martin
    I am using a ToolStripComboBox to list some data. I am populating this combo with some custom objects: For Each obj As myObject In myObjectList myToolStripComboBox.Items.Add(obj) Next This works great except the text displayed in the combo is the name of the object class. I can understand why and realise that I need to do something to make the combo use a property from my class instead. The help files state: To add objects to the list at run time, assign an array of object references with the AddRange method. The list then displays the default string value for each object. You can add individual objects with the Add method. The bit in bold suggests I need to setup the default string value in my class. How would I go about doing this?

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  • How can I tell whether a webpart that has been deployed to a site is a native webpart that ships wit

    - by program247365
    I have a SharePoint 2007 MOSS instance, and I'm on a fact-finding mission. There have been multiple developers, developing multiple webparts and deploying them (using VS2005/2008 SharePoint Extensions). I thought maybe I could look at the fields in the "Web Part Gallery" list in my site, and look by "Modified by", but it looks like a developer's name is on some of the out-of-the-box webparts somehow, and on ones I know are custom developed, they say "System Account" - so looking at that field in this list is a no go. I thought then maybe I could look at the "Group" to which each webpart was assigned but it looks like they were arbitrarily assigned to many different groups inconsistently - so using that piece of information is a no go. Here is my code I have for just looping through and getting the names of all the webparts. Is there any property I can access on the list items of webparts that would tell me whether it's a custom developed webpart? Any way to distinguish the custom webparts from the out-of-the-box ones? Is there another way to do this? #region Misc Site Collection Methods public static List<string> GetAllWebParts(string connectedSPInstanceUrl) { List<string> lstWebParts = new List<string>(); try { using (SPSite site = new SPSite(connectedSPInstanceUrl)) { using (SPWeb web = site.OpenWeb()) { SPList list = web.Lists["Web Part Gallery"]; foreach (SPListItem item in list.Items) { lstWebParts.Add(item.Name); } } } } catch (Exception ex) { lstWebParts.Add("Error"); lstWebParts.Add("Message: " + ex.Message); lstWebParts.Add("Inner Exception: " + ex.InnerException.ToString()); lstWebParts.Add("Stack Trace: " + ex.StackTrace); } return lstWebParts; } #endregion

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  • Refresh databases data

    - by Simon
    How can i refresh the data from my database(ms access) in c# using windows form aplication? part of the code where i insert the data : insertCommand.Parameters.Add("@ID_uporabnika", OleDbType.Integer).Value = Convert.ToInt32(textBox6.Text); insertCommand.Parameters.Add("@datum", OleDbType.DBDate).Value = DateTime.Now.ToShortDateString(); insertCommand.Parameters.Add("@ID_zivila", OleDbType.Integer).Value = Convert.ToInt32(iDTextBox.Text); insertCommand.Parameters.Add("@skupaj_kalorij", OleDbType.Double).Value = Convert.ToDouble(textBox1.Text); empConnection.Open(); try { int count = insertCommand.ExecuteNonQuery(); } catch (OleDbException ex) { MessageBox.Show(ex.Message); } finally { empConnection.Close(); MessageBox.Show("zauižiti obrok je bil shranjen"); textBox1.Clear(); textBox2.Clear(); textBox3.Clear(); textBox4.Clear(); textBox5.Clear(); } }

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  • Setting an individual DataGridView Cell

    - by user315493
    Hi, In a DataGridView, it is possible to set an individual DataGridViewCell like this: dataGridView.Item(columnIndex, rowIndex) = New DataGridViewTextBoxCell. However, is the new DataGridViewCell is set before his owning column become visible, it seems that the individual cell will be replaced (or marked?) by the column default cell. Is there a way to fix this? Regards, Simon

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  • Parsing pipe delimited string into columns?

    - by DMS
    Hello, I have a column with pipe separated values such as: '23|12.1| 450|30|9|78|82.5|92.1|120|185|52|11' I want to parse this column to fill a table with 12 corresponding columns: month1, month2, month3...month12. So month1 will have the value 23, month2 the value 12.1 etc... Is there a way to parse it by a loop or delimeter instead of having to separate one value at a time using substr? Thanks.

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  • Invalid cast exception

    - by user127147
    I have a simple application to store address details and edit them. I have been away from VB for a few years now and need to refreash my knowledge while working to a tight deadline. I have a general Sub responsible for displaying a form where user can add contact details (by pressing button add) and edit them (by pressing button edit). This sub is stored in a class Contact. The way it is supposed to work is that there is a list with all the contacts and when new contact is added a new entry is displayed. If user wants to edit given entry he or she selects it and presses edit button Public Sub Display() Dim C As New Contact C.Cont = InputBox("Enter a title for this contact.") C.Fname = frmAddCont.txtFName.Text C.Surname = frmAddCont.txtSName.Text C.Address = frmAddCont.txtAddress.Text frmStart.lstContact.Items.Add(C.Cont.ToString) End Sub I call it from the form responsible for adding new contacts by Dim C As New Contact C.Display() and it works just fine. However when I try to do something similar using the edit button I get errors - "Unable to cast object of type 'System.String' to type 'AddressBook.Contact'." Dim C As Contact If lstContact.SelectedItem IsNot Nothing Then C = lstContact.SelectedItem() C.Display() End If I think it may be something simple however I wasn't able to fix it and given short time I have I decided to ask for help here. I have updated my class with advice from other members and here is the final version (there are some problems however). When I click on the edit button it displays only the input box for the title of the contact and actually adds another entry in the list with previous data for first name, second name etc. Public Class Contact Public Contact As String Public Fname As String Public Surname As String Public Address As String Private myCont As String Public Property Cont() Get Return myCont End Get Set(ByVal value) myCont = Value End Set End Property Public Overrides Function ToString() As String Return Me.Cont End Function Sub NewContact() FName = frmAddCont.txtFName.ToString frmStart.lstContact.Items.Add(FName) frmAddCont.Hide() End Sub Public Sub Display() Dim C As New Contact C.Cont = InputBox("Enter a title for this contact.") C.Fname = frmAddCont.txtFName.Text C.Surname = frmAddCont.txtSName.Text C.Address = frmAddCont.txtAddress.Text 'frmStart.lstContact.Items.Add(C.Cont.ToString) frmStart.lstContact.Items.Add(C) End Sub End Class

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  • UitableView Problem in deleating items from database

    - by Arun Sharma
    Hi All, I am using in UitableView database.My table view works successfully (add single item,add multiple item,delete all) only problem is there when i want to delete single item for this i using Uitableview edit option. so how i add database method for deleting single item from database and also from table view. Please help me.

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  • Basic SQL Select in Postgresql fails

    - by Rhubarb
    I am doing a select * on a postgresql table, and everything looks good. But if I do: SELECT Name from People It says: ERROR: column People.Name does not exist SQL state: 42703 Character: 8 But the name column shows up during select *. I've tried: SELECT People.Name from People as well, with the same result. Am I missing something? It should be pretty easy to do this in any other database.

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  • Preventing the opening of a form on an ad

    - by Jonathan
    Hey guys, Did you guys know how to prevent the open of a Form when I click on a add button? Maybe using beforeShowForm? function(formid) { if(jQuery('#gridap').getGridParam('selrow')) { idgridap=jQuery('#gridap').getGridParam('selrow'); jQuery('#FK_numerocontrato_ap',formid).val(idgridap).attr('readonly','readonly'); } else { // I want to prevent the openning of the add form here and maybe show an alert using the "alertcap" } } CHECAROW; $grid->setNavEvent('add','beforeShowForm',$checarowid); BTW, there's a way to call the alertmod of jqgrid and add a custom message to it? tks!

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  • Visual Studio Game Controller

    - by Pythonator
    I'm making a program to improve your gaming skills, so its not a hacking program!! Now, i'm stuck on 1 thing, i need sort of a keylogger, that will logg what you do, For example, when you press space, it has to put Jumped in a Rich Text Box. When you left mouse click, it has to add Shots Fired to the Rich Text Box, and then , when right mousebutton is clicked, add Aiming Down Sights, but when its released it should also add something like Stopped Aiming Down Sights Can anyone help me on this? Greets

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  • Multiple jQuery UI buttons with same ID

    - by Mark Nolan
    There might be a really simple solution to this question, but i just don't see it! I have a page with a list of items. every item has the same jquery ui button (its inside a dialog and adds that item to a list). i identify the item via the parenting DIV holding the DB id. So far so good... The Problem is only the first button on the list works! The second, third etc. buttons don't show any reaction at all. The buttons all have the same id - as the list is dynamic and the same action is triggered with every click. Only the parenting ID changes. Heres the display part: <div id="2"> <div id="56"> <button id="add-audio-file" class="ui-button ui-state-default ui-corner-all">betty_2.mp3</button> </div> </div> <div id="2"> <div id="57"> <button id="add-audio-file" class="ui-button ui-state-default ui-corner-all">betty_3.mp3</button> </div> </div> And here comes the js Part: $('#add-audio-file').click(function() { assetID = $(this).parent('div').attr('id'); pageID = $(this).parent('div').parent('div').attr('id'); $.post( "modules/portfolio/serialize.php", {id : pageID, assetid : assetID, do : "add-audio-file"}, function(data, textStatus, xhr) { $('#dialog-add-audio').dialog('close'); } ); }); I am using jquery 1.4.2 and jquery ui 1.8rc3 Any ideas?

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  • Automatically go to next line in vim

    - by user191622
    Hi. One frustrating behavior in vim is that when i move my cursor right or left (respectively "l" or "h)" and i am at the end or the beginning of the line, my cursor doesn't move to first column of next line or last column of previous line. Is there a way to change this behavior ?

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  • SQL SERVER - Detecting non-indexed columns but used in WHERE clause

    - by Vadi
    How to detect a column included in WHERE clause but used in indexed? Little Background: Until the time the table has few number of records things will be okay, once it started having millions of records then index should be created for a column which is used in WHERE clauses in stored procs, inline queries etc., Since we have hundreds of stored procs and queries that often gets changed by the devs I wanted to have a automated way of identifying those columns that are used in WHERE clauses but not an index is created. How to do that in SQL SERVER 2008?

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  • Java Graphics on java, 2d array board game.

    - by FILIaS
    I wanna fix a 2D board for a game. I've already fixed other panels for the gui and everything goes well. But the panel for the board cant be printed on the window. I'm a bit confused about it as i think i've followed the same ideas as for the others panels i need. Here's what i've done: /** *Method used to construct the square in the area of the *gui's grid. In this stage a GUISquare array is being constructed, * used in the whole game as *a mean of changing a square graphical state. *@param squares is the squares array from whom the gui grid will be *constructed. *@see getSquare about the correspondance beetween a squareModel and * a GUISquare. */ private void initBoardPanel(SquareModel[][] squares){ BoardPanel.setLayout(new GridLayout(myGame.getHeight(),myGame.getWidth())); //set layout Squares=new GUISquare[myGame.getHeight()][myGame.getWidth()]; grid=new JPanel[myGame.getHeight()][myGame.getWidth()]; for (int i=0; i< myGame.getHeight(); i++){ for (int j=0; j<myGame.getWidth() ; j++){ grid[i][j] = new JPanel( ); GUISquare kout=new GUISquare(i,j); kout.setSquare(myGame.getSquares()[i][j]); kout.draw(myGame.getSquares()[i][j].getGoTo(),myGame.getSquares()[i][j].getNumber()); /*draw method is been called. the first parameter is the number of the square that the player will be moved to if lands in this one square,the second parameter is just the number of the square */ kout.setVisible(true); grid[i][j].add(kout); grid[i][j].setVisible(true); BoardPanel.add(grid[i][j]); BoardPanel.setVisible(true); BoardPanel.setBackground(Color.WHITE); GUISquare temp=this.getSquare(squares[i][i]); Squares[i][j]= temp; } } this.add(BoardPanel,BorderLayout.WEST); // this.pack(); //sets appropriate size for frame this.setVisible(true); //makes frame visible } /** * Transformer for Rand/Move * <br>This method is used to display a square on the screen. */ public void draw(int goTo ,int number) { JPanel panel = new JPanel(); JLabel label1 = new JLabel(""+"Move To"+goTo); JLabel label2 = new JLabel(""+number); JSeparator CellSeparator = new JSeparator(orientation); panel.add(CellSeparator); panel.setLayout(new BorderLayout()); panel.add(label1, BorderLayout.CENTER); panel.add(label2, BorderLayout.LINE_START); } I've posted only one draw method...but all versions are alike.

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  • cassandra thrift: append data

    - by urssujith
    If I need to append data (not insert) into a particular super column, what should I do? For eg: Consider a existing record described below Kespace : test columFamily: testColum SuperColumn : testSuper column_name : email value : [email protected] Here if I want to add my phone number to the super column "testSuper". What should I do?

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  • ValidationProperty not returning entered value for textbox in custom ontrol

    - by nat
    hi I have a custom control, (relevant code at the bottom) it consists of some text/links and a hidden textbox (rather than a hidden input). when rendered, the user via another dialog and some JS sets the value of the textbox to an integer and clicks submit on the form. i am trying to assure that the user has entered a number (via the JS) and that the textbox is not still set to its default of "0" the requiredfieldvalidator works just fine, if i dont change the value it spots it on the client and fills the validation summary on the page with the appropriate message. unfortunately when i do fill the textbox, the validator also rejests the post as the controls textbox text value is still set to "0", even though on the form it has changed. clearly i am doing something wrong.. but cant work out what it is? could someone enlighten me please, this is driving me potty if i step through the code, when the get of the mediaidtext is hit,the findcontrol finds does not the textbox, if i inspect the controls collection however i can find the textbox, but its value is still "0" it also seems that when findcontrol is called, the createchildcontrols is called again - thus resetting the value back to "0" there.. ! how can i ever assure the control realises that the textbox value has changed? many thanks code below nat [ValidationProperty("MediaIdText")] public class MediaLibraryFileControl: CompositeControl { private int mediaId = 0; public int MediaId { get { return mediaId; } set { mediaId = value; } } public string MediaIdText { get { string txt = "0"; Control ctrl = this.FindControl(this.UniqueID+ "_hidden"); try { txt = ((TextBox)ctrl).Text; MediaId = Convert.ToInt32(txt); } catch { MediaId = 0; } return txt; } } protected override void CreateChildControls() { this.Controls.Add(new LiteralControl("<span>")); this.Controls.Add(new LiteralControl("<span id=\"" + TextControlName + "\">" + getMediaDetails() + "</span>")); TextBox tb = new TextBox(); tb.Text = this.MediaId.ToString(); tb.ID = this.UniqueID + "_hidden"; tb.CssClass = "hidden"; this.Controls.Add(tb); if (Select == true) { this.Controls.Add(new LiteralControl(string.Format("&nbsp;[<a href=\"javascript:{0}(this,'{1}','{2}')\" class=\"select\">{3}</a>]", dialog, this.UniqueID, this.categoryId, "select"))); this.Controls.Add(new LiteralControl(string.Format("&nbsp;[<a href=\"javascript:{0}(this,'{1}')\" class=\"select\">{2}</a>]", clearDialog, this.ID, "clear"))); } this.Controls.Add(new LiteralControl("</span>")); } protected virtual string getMediaDetails() { //... return String.Empty; } } this is the code adding the validationcontrol the editcontrol is the instance of the control above public override Control RenderValidationControl(Control editControl) { Control ctrl = new PlaceHolder(); RequiredFieldValidator req = new RequiredFieldValidator(); req.ID = editControl.ClientID + "_validator"; req.ControlToValidate = editControl.ID; req.Display = ValidatorDisplay.None; req.InitialValue = "0"; req.EnableClientScript = false; req.ErrorMessage = "control cannot be blank"; ctrl.Controls.Add(req); return ctrl; }

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  • C# - UpdateResource - To Remove A Resource

    - by Luke
    I am able to successfully add a resource to a file using UpdateResource and then remove it using: UpdateResource(HANDLE, "TYPE", "NUMER", 1033, IntPtr.Zero, 0); When I add a resource to the file it will add another even though there is an existing resource exactly the same, also I cannot remove any existing resources. When I try to remove an existing resource using that line I get the error ERROR_INVALID_PARAMETER. Any ideas?

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  • Avoiding a fork()/SIGCHLD race condition

    - by larry
    Please consider the following fork()/SIGCHLD pseudo-code. // main program excerpt for (;;) { if ( is_time_to_make_babies ) { pid = fork(); if (pid == -1) { /* fail */ } else if (pid == 0) { /* child stuff */ print "child started" exit } else { /* parent stuff */ print "parent forked new child ", pid children.add(pid); } } } // SIGCHLD handler sigchld_handler(signo) { while ( (pid = wait(status, WNOHANG)) > 0 ) { print "parent caught SIGCHLD from ", pid children.remove(pid); } } In the above example there's a race-condition. It's possible for "/* child stuff */" to finish before "/* parent stuff */" starts which can result in a child's pid being added to the list of children after it's exited, and never being removed. When the time comes for the app to close down, the parent will wait endlessly for the already-finished child to finish. One solution I can think of to counter this is to have two lists: started_children and finished_children. I'd add to started_children in the same place I'm adding to children now. But in the signal handler, instead of removing from children I'd add to finished_children. When the app closes down, the parent can simply wait until the difference between started_children and finished_children is zero. Another possible solution I can think of is using shared-memory, e.g. share the parent's list of children and let the children .add and .remove themselves? But I don't know too much about this. EDIT: Another possible solution, which was the first thing that came to mind, is to simply add a sleep(1) at the start of /* child stuff */ but that smells funny to me, which is why I left it out. I'm also not even sure it's a 100% fix. So, how would you correct this race-condition? And if there's a well-established recommended pattern for this, please let me know! Thanks.

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  • mySQL search for a number in VARCHAR field

    - by sea_1987
    Hi There, I have a field in my database that contain comma seperated values these values are numbers, and I am trying to do a search and count the number of times that a number appears in that column throughout the column, $sql = "SELECT sector_id_csv, COUNT(sector_id_csv) as count FROM cv WHERE sector_id_csv LIKE '$sectorId'"; This seems slow and does not return any results, and I know the sector_id it is search exsists in the table.

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