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  • How to report DataContext.SubmitChanges() progress with LINQ2SQL

    - by kzen
    If there is a foreach loop that contains DataContext.Customer.InsertOnSubmit(cust) for example: foreach (Object obj in collection) { Customer cust = new Customer { Id = obj.Id, Name = obj.Name ... }; DataContext.Customer.InsertOnSubmit(cust); } And outside of the loop there is a call to: DataContext.SubmittChanges(); Is there a way to obtain the SubmittChanges progress in order to report the progress back to the user (or a different approach without moving the SubmittChanges into the loop)?

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  • implement bank using python programming

    - by prajakta
    Write software for a bank. The program should be menu driven with the facility for bank employees to perform various operations. It should be written using all concepts of Object Oriented programming. You should be able to save your data in a file and read it back (because the bank people will shut down their computers when they go home :p ) Guidelines: The program may select to implement classes like Bank, Account, Savings Account, Fixed Deposit account, Customer, Depositor, Borrower, Transaction, etc.

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  • Poll C# app's memory usage at runtime?

    - by maxfridbe
    I have an app that, while running, needs to poll its own memory usage. It would be ideal if it could list out the memory usage for each object instantiated. I know this can be achieved by WMI, but I was hoping for something that doesn't rely on WMI.

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  • Sorting a GridView

    - by Markus
    Hi, I have a question regarding GridView windows forms control. As a datasource, I am using a DataTable object. When the grid view is sorted, the DataTable's row indices are not sorted. In this way, when accessing the DataTable using indices from GridView, I get the unexpected rows. How can this situation be handled?

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  • C#: DataTime Parsing

    - by Anry
    I have a string of the form "ORDER20100322194007", it "20100322194007" Date and time 2010-03-22 19:40:07.000. How to parse a string and get the contained object DateTime?

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  • When i am adding eventHandler on combo in datagridview, its adding eventHandler to all other combo o

    - by Rajesh Rolen- DotNet Developer
    i am using VS2005 (c#.net desktop application). when i am adding eventHandler to a combo of datagridview, its automatically adding same eventhandler to all other combos of same datagridview.. my code: private void dgvtstestdetail_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e) { DataGridView grid = (sender as DataGridView); if (grid.CurrentCell.OwningColumn == grid.Columns["gdvtstd_TestParameter"]) { ComboBox cb = (e.Control as ComboBox); cb.SelectedIndexChanged -= new EventHandler(dvgCombo_SelectedIndexChanged); cb.SelectedIndexChanged += new EventHandler(dvgCombo_SelectedIndexChanged); } }

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  • setTimeout not working in windows script (jscript)

    - by Sibo Lin
    When I try to run the following code in my program setTimeout("alert('moo')", 1000); I get the following error Error: Object expected Code: 800A138F Source: Microsoft JScript runtime error Why? Am I calling the wrong function? What I want to do is delay the execution of the subsequent function.

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  • What are the best practices for implementing the == operator for a class in C#?

    - by remio
    While implementing an == operator, I have the feeling that I am missing some essential points. Hence, I am searching some best practices around that. Here are some related questions I am thinking about: How to cleanly handle the reference comparison? Should it be implemented through a IEquatable<T>-like interface? Or overriding object.Equals? And what about the != operator? (this list might not be exhaustive).

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  • cystal report calling in php

    - by khurshid
    I want to call crystal report in php. now after searching i reach at that point that it is possible through COM object but now one error is created which is Fatal error: Call to undefined method com::OpenReport() so how to remove it

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  • Struggling with ASP.NET MVC auto-scaffolder template

    - by DanM
    I'm trying to write an auto-scaffolder template for Index views. I'd like to be able to pass in a collection of models or view-models (e.g., IQueryable<MyViewModel>) and get back an HTML table that uses the DisplayName attribute for the headings (th elements) and Html.Display(propertyName) for the cells (td elements). Each row should correspond to one item in the collection. Here's what I have so far: <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %> <% var items = (IQueryable<TestProj.ViewModels.TestViewModel>)Model; // How do I make this generic? var properties = items.First().GetMetadata().Properties .Where(pm => pm.ShowForDisplay && !ViewData.TemplateInfo.Visited(pm)); %> <table> <tr> <% foreach(var property in properties) { %> <th> <%= property.DisplayName %> </th> <% } %> </tr> <% foreach(var item in items) { HtmlHelper itemHtml = ????; // What should I put in place of "????"? %> <tr> <% foreach(var property in properties) { %> <td> <%= itemHtml.Display(property.DisplayName) %> </td> <% } %> </tr> <% } %> </table> Two problems with this: I'd like it to be generic. So, I'd like to replace var items = (IQueryable<TestProj.ViewModels.TestViewModel>)Model; with var items = (IQueryable<T>)Model; or something to that effect. A property Html is automatically created for me when the view is created, but this HtmlHelper applies to the whole collection. I need to somehow create an itemHtml object that applies just to the current item in the foreach loop. I'm not sure how to do this, however, because the constructors for HtmlHelper don't take a Model object. How do I solve these two problems?

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  • [rails] user's account backup and restore

    - by Cédric
    Hi everyone, I am currently working on a project and i would like my users to be able to backup/restore theirs accounts. I am looking for a rails plugin/gem that would easily do that, ie : current_user.backup() = backup_file current_user.restore(backup_file) = database import/replace I don't know if my question is very clear, but i would like to backup every user's related object (posts, comments, etc) and to be able to restore them from a backup file. Thanks per advance, Cédric.

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  • JavaScript Encapsulation / JQuery

    - by Chris
    I am trying to figure out how to keep my page variables in my application from being defined globally. I've come up with a few methods but am wondering if there is a general standard approach people use. I've got my plugin design pattern down using this approach: http://www.virgentech.com/blog/2009/10/building-object-oriented-jquery-plugin.html. But I'm just not sure how to handle my page level encapsulation.

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  • C# : MS Chart : SeriesCollection -> InvalidCastException?

    - by HeinrichStack
    What is the correct way to get the Series of a char in PPT 2010. I tried PowerPoint.SeriesCollection mySeriesCollection = (PowerPoint.SeriesCollection) myChart.SeriesCollection(1); throws the following exception Exception Type: System.InvalidCastException Further, What is the correct call in C# to get the series of a chart ? If I try this way: PowerPoint.Series mySeries = (PowerPoint.Series)myChart.SeriesCollection.Item(1); I get the following compile error : error CS0119: 'Microsoft.Office.Interop.PowerPoint.Chart.SeriesCollection(object)' is a 'method', which is not valid in the given context

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  • LINQ-to-SQL - C# - OnValidate()

    - by Mark Comix
    Hello, I have a system with 3 layers and I am using LINQ-to-SQL to persist. I want to validate if the description field of my object is empty. I am using partial classes and the method OnValidate(). If the field is empty, it throws an exception. Is this correct? What do I do after the exception to not close the form, letting the user continue working? Thank you very much Sorry for my poor english

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  • where can i get Request.Browser.Platform items from ?

    - by eugeneK
    Hi, i want to have pre-made list of most common OSes in my DB and all non default to be listed as other. Problem is i don't know what OSes called in Request.Browser object. List i want to have WinXP, Vista, Win7, Linux, MacOS and other... Do any of you know what are exact names of these OSes in Request.Browser.Platform or where i can get list of values from ?

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  • How can I automate the "generate scripts" task in SQL Server Management Studio 2008 ?

    - by Brann
    I'd like to automate the script generation in SQL Server Management Studio 2008. Right now what I do is : Right click on my database, Tasks, "Generate Scripts..." manually select all the export options I need, and hit select all on the "select object" tab Select the export folder Eventually hit the "Finish" button Is there a way to automate this task? Edit : I want to generate creation scripts, not change scripts.

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  • Meaning of Primary Key to Microsoft SQL Server 2008

    - by usr
    What meaning does the concept of a primary key have to the database engine of SQL Server? I don't mean the clustered/nonclustered index created on the "ID" column, i mean the constraint object "primary key". Does it matter if it exists or not? Alternatives: alter table add primary key clustered alter table create clustered index Does it make a difference?

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  • Console.Write Not Working

    - by Steven
    I created a VB.NET Windows Forms Application in Visual Studio 2008. When I run my program from the command-line, I get no output (only the next prompt). Why? Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Debug.Write("Foo") Debug.Flush() Console.WriteLine("foo") Console.Beep(800, 100) 'confirm this function is called' Me.Close() End Sub

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  • [Iphone-Dev] Assigning values : difference between properties and class variables ?

    - by gotye
    Hey guys, I noticed that I rarely use properties, due to the fact that I rarely need to access my object's variables outside my class ;) So I usually do : NSMutableArray *myArray; // not a property ! My question is : even if i don't declare myArray as a property, does iphone make a retain anyway if I do myArray = arrayPassedToMe; I think so but I just wanted to confirm ;) Any thoughts welcome ! Gotye

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  • JMF. Create new custom streamdatasource

    - by Afro Genius
    Hi there. I am looking to create a means of building a DataSource object (and hence a Processor) that gets data from a stream instead of a file, RTP, and so on. I am writing a module for a much larger application that is meant to transparently transcode audio data. Going through the JMF docs only specify how to create a source from file however I need to be able to create a source from a stream within my application. Any idea where I can start looking?

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  • How do I output an ISO-8601 formatted string in Javascript?

    - by James A. Rosen
    I have a date object from which I'd like to render an HTML snippet like <abbr title="2010-04-02T14:12:07">A couple days ago</abbr>. I have the "relative time in words" portion from another library. How do I render the title portion? I've tried the following: isoDate: function(msSinceEpoch) { var d = new Date(msSinceEpoch); return d.getUTCFullYear() + '-' + (d.getUTCMonth() + 1) + '-' + d.getUTCDate() + 'T' d.getUTCHours() + ':' + d.getUTCMinutes() + ':' + d.getUTCSeconds(); } But that gives me "2010-4-2T"

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  • Are Maybes a good pattern for scala?

    - by Fred Haslam
    For a while I have been struggling to integrate scala with java methods that might return null. I came up with the following utility which helps a lot: // produce an Option, nulls become None object Maybe { def apply[T](t:T) = if (t==null) None else Some(t) } Maybe(javaClass.getResultCouldBeNull()).map( result => doSomeWork(result) ) I have a few questions about this solution: Is there a better or more standard pattern to use? Am I duplicating something that already exists? Does this functionality have hidden gotchas?

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