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C# 5.0

C#5.0

Great Reads

Loading Related Entities with Entity Framework - A Beginner's Primer

by David Rogers Dev

Learn how to load related entities using the Entity Framework with simple examples

Object Tracking: Particle Filter with Ease

by Darko Jurić

SIR Particle Filter brief tutorial with samples in C#

Generating RDLC Dynamically for the Report Viewer Local Report

by tetsushmz

This article explains how to dynamically create RDLC.

Introducing Calcium for Xamarin.Forms

by Daniel Vaughan

Create best-in-breed cross-platform MVVM apps using Calcium for Xamarin.Forms.

Latest Articles

Azure IoT Hub Tester

by Roman Kiss

Design and implementation of small tool, tester for exploring Azure IoT Hub with virtual MQTT device

Duplicate songs detector via audio fingerprinting

by Ciumac Sergiu

Explains sound fingerprinting algorithm, with a practical example of detecting duplicate files on the user's local drive.

Using Reflections in C#

by Mansur Kurtov

This article shows how to use reflections in C#.

Automatic Table Generation in any Database by NHibernate ORM and CodeDom for Code Generation

by Mahsa Hassankashi

This article enables you to generate table in any database such as Oracle, SQLServer, MySQL, SQLite, Sybase, etc. just by typing table name and its fields. Then you can use NHibernate facilities to make query for data layer.

All Articles

C# 5.0

"Conversion failed when converting the varchar value '@IDPRO' to data type int."

19 Jul 2015 by wafa_7903

Please help me to solve this code if there is error..I have this error message-Conversion failed when converting the varchar value '@IDPRO ' to data type int. .I work with SQL 2014 and VS 2012CLASSES class DataAccessLayer { SqlConnection SQLcn; //This...

SQL-Server-2014

"Conversion failed when converting the varchar value '@IDPRO' to data type int."

19 Jul 2015 by Wendelius

Based on the code the value in @IDPRO variable goes to column ID_PRODUCT in the table. You have defined that parameter as a varcharparam[0] = new SqlParameter("@IDPRO", SqlDbType.VarChar, 50); param[0].Value = ID_PRODUCT;but most likely the column definition in the database is int.

SQL-Server-2014

"copy path" option in right click context menu using c#

4 Mar 2015 by Member 11473159

Using regedit I was able to add "copy path" option to right click context menu.when I right click on any file and I click "copy path" option then path of that should get copy to txt file....using c#........help me out of this its urgent......thanks in advance....

"copy path" option in right click context menu using c#

4 Mar 2015 by Sergey Alexandrovich Kryukov

You can start, for example, with this CodeProject article: .NET Shell Extensions - Shell Context Menus[^].—SA

"ExecuteNonQuery: CommandText property has not been initialized"

1 Dec 2014 by Member 11111143

using System;using System.Collections;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using...

SQL-Server-2008R2

"ExecuteNonQuery: CommandText property has not been initialized"

1 Dec 2014 by DamithSL

there may be a situation where you may not have value for strSql.ToString() then you may end up with empty sql statement for SQL command. debug and check why your code not behave as expected.

SQL-Server-2008R2

"Load report failed." in crystal report.

1 Feb 2015 by sumitk.cadc

Hi,I am using crystal report in my wpf app for showing reports.its all working fine.but after creating exe when i am going to show reports using APP shortcut(which is created when i install exe) its giving me error like below{"Load report failed."}Inner exception is{"Unsupported...

"Load report failed." in crystal report.

2 Feb 2015 by /\jmot

You will need to modify two properties in the .rpt files:Build Action is set to "Embedded Resource" by default. Change it to "Content".Copy to Output is set to "Do not copy" by default. Change it to "Copy always".Rebuild, Build deployment package and Publish....

"Load report failed." in crystal report.

2 Feb 2015 by Sanman Marathe

i faced similar kind of situation while working and even after doing the changes from solution1 above , i realized a stupid mistake a very annoying one though.check the path you're calling the crystal report from, and use the "\" till the end of the path if its being passed dynamically.

"No mapping exists from object type System.Web.UI.WebControls.TextBox to a known managed provider native type."}

21 Nov 2014 by Member 11111143

ublic partial class _Default : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { } protected void btnSubmit_Click(object sender, EventArgs e) { int[] nos = new int[Convert.ToInt32(txtNo.Text)]; for (int i = 0; i

SQL-Server-2008R2

"No mapping exists from object type System.Web.UI.WebControls.TextBox to a known managed provider native type."}

21 Nov 2014 by OriginalGriff

You forgot the ".Text": cmd.Parameters.Add("@SrNo", txtSrNo);Becomes: cmd.Parameters.Add("@SrNo", txtSrNo.Text);

SQL-Server-2008R2

"Object Reference not set to an instance of an object" in unit testing using c#?

1 Dec 2014 by Karthik Ravi

Hi,I am tring to unit test my project but it showing error as "Object Reference not set to an instance of an object". someone kindly give me a solution for this problem.I referred all necessary namespace in this project. //Unit Test codeusing System;using...

"Object Reference not set to an instance of an object" in unit testing using c#?

2 Dec 2014 by OriginalGriff

"i think it may be on "Source Con" in TestConnection method. " Source Con = null;Can't throw a null reference exception - it doesn't refer to or create an instance of any class.However, then next line is likely to: appGlobal.AddText();Check your references to...

"Object Reference not set to an instance of an object" in unit testing using c#?

2 Dec 2014 by Sergey Alexandrovich Kryukov

You did not show where the exception with the message "Object reference not set to an instance of an object" is thrown. You should not ask a specific question each time you face this little problem. It's much more important to learn how to deal with it all by yourself in all cases. Not to...

"Some 50 line co code "" lines of code are same in two different if else condition ho w to manage

2 Jul 2018 by kumarravishankar

if(xyz==1) { if(searchFilter.FormId == 0 || SubTab.AppType == searchFilter.FormId) { Some 50 Line co code } } else (searchFilter.FormId == 0 || SubTab.AppType == searchFilter.FormId || (SubTab.AppType == (int)_partner.Form.Homeless) && searchFilter.FormId != null) { Some 50 Line co code }...

"Some 50 line co code "" lines of code are same in two different if else condition ho w to manage

2 Jul 2018 by Mehdi Gholam

The way to consolidate code is to create a method/function and put the duplicate code in it and call it from the the duplicate places.

"Some 50 line co code "" lines of code are same in two different if else condition ho w to manage

2 Jul 2018 by Maciej Los

In addition to Mehdi Gholam[^]'s answer, i'd like to provide a link to MSDN documentation: Methods (C# Programming Guide) | Microsoft Docs[^], which explains how to create method.

"} Expected" error checked braces, why am I receiving this error?

19 Dec 2016 by Member 12821924

Hello Im recieving an "}" expected error, im trying to end my main method after the public class starter. Why am i receiving this error?using System;using System.Collections.Generic;using System.Linq;using System.Data;using System.Diagnostics;using...

"} Expected" error checked braces, why am I receiving this error?

19 Dec 2016 by Dave Kreskowiak

Um, you tried to define an entire class inside your Main method in the Program class. You can't do that.If you really think that's the "correct placement" of this code, then you know nothing at all about C# and copied this code from somewhere and have absolutely no idea how it works.

"Áppliacation" does not display data. Iam using visual studion 2015

16 Nov 2015 by Sergey Alexandrovich Kryukov

Perhaps it happens because you have some JavaScript code by think it is C#. Use JavaScript code with JavaScript and C# code in C# solutions.-SA

$http.post can not send object to controller WebAPi

8 Aug 2015 by baotdinh

Hi all,i am learning Angularjs . i have a code:controller.js $scope.save = function (position) { $http.post(serviceBase + 'Positions', { model: $scope.position }) .success(function (data) { });$scope.position already returns an...

'entityframework.models.foreig...

25 May 2015 by Member 10627743

I am developing an app in WPF that is going to make use of entity framework CRUD operations, but am stuck at a line of code and could not proceed. in one of the classes there is a red underline on "[Foreignkey("DepId")]" with an error message "'entityframework.models.foreignkeyAttribute' does...

'entityframework.models.foreig...

25 May 2015 by Duncan Edwards Jones

You should add the System.ComponentModel.DataAnnotations namespace.See this tip...[^]

'Pushasync is not supported globally on windows, please use a navigationpage.'

18 Mar 2021 by Muthu vj

hi in xamarin form i am facing this Error while clicking the button for navigating another page. can you help me on this how to fix the Error public partial class HomePage : ContentPage { public HomePage() { ...

'System.Dynamic.DynamicObject' does not contain a definition for 'var2' RSS

30 Mar 2015 by star_tasneem

want to dynamically populate dropdownlist. have table of District{district_id,distrint_name} and Thana{thana_id,thana_name,district_id(fk)}.The controller code:public class CenterController : Controller { string connection...

'Undefined' Message When I Split Array List...

13 Jan 2015 by Nishant.Chauhan80

$(document).ready(function () { var results =[1111$11,1222$22,2333$33]; $('#bttn_Click').click(function () { stringArray = new Array(results); stringArray.split(','); // Error display for (var i = 0; i > stringArray.length;...

'Undefined' Message When I Split Array List...

13 Jan 2015 by Kornfeld Eliyahu Peter

new Array() can not get an array as parameter...It should be a list of values or nothing...In your case results is already an array so you have 3 options...1. Assign the existing array to the newstringArray = results;2. Clone the existing arraystringArray = results.slice(0);3. Do not...

((S05xE04)) The Walking Dead Season 5 Episode 4 Watch Online LIVE HD!

2 Nov 2014 by Viooz HD

.............................

(contact and email folders in listboxes) outlook email synchronization

7 Apr 2014 by Bhatt Aniruddh

hi all,i have two list boxes. i want contact synchronization folder and email synchronization folder in list boexs.i tried following code...private void EnumerateFoldersInDefaultStore(){ Outlook.Folder root = Application.Session.DefaultStore.GetRootFolder() as...

-1 down vote favorite I want to create a tool like textbox validation so how to create textbox validate tool in asp.net c#

13 Apr 2014 by Member 10306290

I want to create a tool like textbox validation so how to create textbox validate tool in asp.net c#

-1 down vote favorite I want to create a tool like textbox validation so how to create textbox validate tool in asp.net c#

13 Apr 2014 by syed shanu

you can create Custom Control .Check this links how to create custom controls in ASP.net.Your First ASP.NET Custom Control[^]http://johanmeyer.ukuvuma.co.za/2013/12/14/creating-custom-control-text-box-validation/[^]http://www.tutorialspoint.com/asp.net/asp.net_custom_controls.htm[^]

.doc file showing .docx extension at the of saving file

14 Jul 2015 by Nitin_Bharekar

I am having couple of word files which is having ".doc". but when i saving the file it's showing ".docx" in saving dialog box.Any one having any idea?

.doc file showing .docx extension at the of saving file

14 Jul 2015 by Peter Leow

Refer: http://ats.immaculata.edu/faq/faq/index.php?action=artikel&cat=35&id=340&artlang=en[^]

.net c# webservice client with certificate auth

25 Aug 2015 by Member 11936499

I have implemented a .net webservice, with a method witch receives a DataSet as parameter.Now, I want to implement security based on digital certificate authentication. On the server side, I managed to do this, but I can't manage to implement the client, in order to use the same proxy class...

.net core and scripts

1 Dec 2020 by octavia81

I'm quite new in .net core. Learning in progress and i'd like to know how much do we need to know ajax, jquery, javascript if we want to get certain level proficiency in .net core web application. I have good enough knowledge in bootstrap css and...

.net core and scripts

1 Dec 2020 by Afzaal Ahmad Zeeshan

.NET Core is a backend technology in a web development stack, while JavaScript, jQuery (and other derivative technologies, such as Ajax) are for the frontend. If you are hands-on with JavaScript, why not go with Node.js? Node.js[^] If you are...

.NET Error Closing serial port BaseStream error is only available when the port is open

16 Jan 2015 by Ferz Franco

I'm using the .NET System.IO.Ports.SerialPort using the BaseStream as suggested in this post If you must use NET SerialPortBut when I try to close the port or the baseStream, an...

.NET Error Closing serial port BaseStream error is only available when the port is open

16 Jan 2015 by Philippe Mori

I would think that tou should only close the serial port but not the base stream as it will get close anyway. The error is probably caused by the fact that serial port assumes that the stream is not closed directly.Thus you should consider that the stream is managed by the serial port and...

.net framework 4.5 where's the services installer project template?

7 Aug 2016 by Member 11579281

Upgrading to .Net framework 4.5 . Where's the C# services installer project template? Or is there a new method for installing / deploying services? Thanks!What I have tried:Tried searching through nuget web and found no love.

.net framework 4.5 where's the services installer project template?

7 Aug 2016 by David_Wimbley

The way to attach an installer to your windows service is the following steps1) In new project setup, select Windows -> Windows Service project template2) Select/double click on Service1.cs3) Right click on the Design window that opened from step 2, and select "Add Installer"4) You...

.Net MemoryCache on multiple/distributed machines

24 Feb 2015 by shreyanshd@hotmail.comi

I want to use MemoryCache in distributed environment i.e. to spread on multiple machine. By this i want to access a cache from applications running on different machines. Is it possible to so or there is any other way around.regards,Shreyansh

.Net Retrieving Data From Server - Permissions Issue

7 Dec 2014 by DHicks19

Hi,I am trying to read data from a server on our network using VFPOLEDB.1 however I am getting an error:"Invalid path or file name"which is caused by a permissions issue.I have tried using the impersonate in web.config file and also set the application pool account in IIS to admin...

.NET Shell Extensions - Adding submenus to Shell Context Menus and Dynamically Loading Context Menu

7 Oct 2015 by Sagar Uday Kumar

Windows Shell Extension - Adding submenus to Shell Context Menus and dynamically loading them using sharpshell library.

.NET XML Input Parameter to RESTful API & ByPassing SSL Certificate

23 Oct 2015 by Yaseer Mumtaz

XML input parameter to RESTful API using HttpClient and bypassing the SSL certificate

1000 Concurrent Web Request C#

13 Jul 2015 by Praveen Kumar Upadhyay

Hi All,I am trying to generate 1000 concurrent web request and then waiting for the response.So basically my requirement is to hit n numbers of request sententiously and wait for response of each.I have written the below code to do so, but I am not able to generate those many...

1000 Concurrent Web Request C#

13 Jul 2015 by Sergey Alexandrovich Kryukov

Actually, I can see only one problem in your code: you did not handle possible exceptions, so I'm not sure how exactly the problem appears. So, here are my suggestions: Handle all exceptions on the top stack frame of all threads. Display comprehensive exception information. Just in...

2 database tables, 1 combo box select field to populate datagridview with selected data

7 Feb 2015 by TheBigBearNow

Hello,I hve a small simple program I am working on just to get better at a few things and understand a little bit of code better. Its involving c# and SQL.I have 2 database tables and they have a common field which is ORDERID. I have 2 controls in my C# program a combo box and a datagrid...

2 database tables, 1 combo box select field to populate datagridview with selected data

7 Feb 2015 by Kochathu Thomas Tinu

Try this code at the click event of comboboxtry{SqlCommand cmd1=new SqlCommand("Select * from buys where OrdersID="+ddlOrders.SelectedValue+"",sqlcon);sqlcon.Open();SqlDataReader readBuys = cmd1.ExecuteReader(); while(readBuys.Read()) ...

3 Tier Layer Business to Presenation Layer Error

3 Oct 2011 by DJAppleboy

I have a Business & Presentation Layer. I am trying to access a method in the Business Layer from the Presentation Layer. // Presentation Layer CodeGrade grd = new Grade();grd = Businesslayer.GetGradeID((int)gradeId);Grade is a Class & GetGradeID is the method in the...

3 Tier Layer Business to Presenation Layer Error

3 Oct 2011 by Al Moje

Hi,Do I am right to say that from your Businesslayer you are retrievingthis list of Grade?If I am right the Declaration on Presentation Layer should be: var grd = Businesslayer.GetGradeID((int)gradeId);grd example contents List of GradeHope this could...

3 Tier Layer Business to Presenation Layer Error

3 Oct 2011 by DJAppleboy

Hi Algem.You understood me correctly. However, im using c# with a normal desktop application so i changed the var to an Object and worked perfectly fine. Regards

3D Drawing using c#

6 Apr 2015 by QutaibaMustafa

Hi ^_^ I want to make a 3d painter using c#.First of all I want to display 3 panels - XY, XY and YZ Views. The user will paint what he wants in each panel. After that he will click on a button to combine the 3 views and get a 3d model from these panel. He also can render this model...

3D Drawing using c#

14 Apr 2015 by Gokulprasad05

Triangle FarPlaneDistance="100" LookDirection="-12,-11,-10" UpDirection="0,1,0" NearPlaneDistance="1" Position="11,10,9" FieldOfView="75" /> ...

3D L-System with C# and WPF

21 Dec 2014 by arussell

How to use C# to create WPF 3D graphics.

404 Error while URL Routing

16 Jul 2015 by Libin C Jacob

Hi, Could you please use this link to see my question.http://stackoverflow.com/questions/31244814/404-error-while-url-routing[^]Thanks in advance

500 Internal Server Error on json post

18 Sep 2014 by Anele Ngqandu

HiHaving issues i cant seem to hit my controller, please helpWeb.xml below.

500 Internal Server Error on json post

23 Sep 2014 by Suraj Sahoo | Coding Passion

For 500 Internal server error, you ought to debug and check for the Issue on the server side code. Please debug putting the code block in try catch and then check for exception.ThanksPlease reply after debug. :)

@html.checkboxfor problem in asp.net mvc 5 C#

12 Jan 2015 by Branden Coker

Good morning all. I have a problem that I've tried everything I can think of and searched the net and cannot find a resolution. I have a check box that simply tells the database whether a field is true or not. The data side of this checkbox works perfectly both posting and retrieving...

@html.checkboxfor problem in asp.net mvc 5 C#

12 Jan 2015 by Branden Coker

I think I found the solution. Sorry to bother you guys. It appears it is the padding that is messing up the check box. I took the padding out of the markup and it stays fixed.

[Beginner question] instantiate an object

22 Nov 2014 by saadmechiche

Hello everyone, when an object is instantiated we put for ex:person p = new person("john","doe",23);but sometimes it is writen directly like thatp = new person("john","doe",23);without the person prefix before p, is that normal behavior ?Thanks for your help :)

[Beginner question] instantiate an object

22 Nov 2014 by DamithSL

person p; may have declared before the line of p = new person("john","doe",23); or as class level field or property.then only you can assign new object to p, otherwise you will get compile error.update:Quote:can you please tell what means class level field or property ?method...

[Beginner question] instantiate an object

22 Nov 2014 by Afzaal Ahmad Zeeshan

Yes that is normal, but only in case if that p variable has been created with the data type to store the person in it. Like this,person p;// add valuesp = new person("john","doe",23);

[C#] How to get all videos from a youtube channel ID?

17 Aug 2015 by Richard MacCutchan

Go to the Youtube developer site[^] and study their documentation.

[C#] How to get links from a youtube playlist ?

17 Aug 2015 by robinson_niit

Hi all!As the title above, I want to get links of all videos from a youtube playlist, how can I do that ?Please help me!Thanks and best regards!----Robinson----

[C#] How to get links from a youtube playlist ?

17 Aug 2015 by Richard MacCutchan

See [C#] How to get all videos from a youtube channel ID?[^].

[Help] is that possible in C# ?

4 Jan 2017 by Thomas Nielsen - getCore

Depends of cause what the mega is :)But in general, no.Well you can use the CodeUI library to instantiate a browser, navigate, then pick the login 'controls' and put data, then execute the whatnot login button on that page. Caveat it doesn't work equally well on all browsers.Secondly...

[OoB] Shooting Paintball Marker with Relay, Arduino and .NET WinForms

5 Oct 2014 by morzel

How to shoot paintball marker with relay, Arduino and .NET Winforms

[repost] How to list the contents(files) of a search folder in listbox, using C#?

2 Nov 2015 by CgKumar

Hi friends,Here i have a problem, which is how to list the contents(files) of a search folder in listbox. The issue is i have many folder, each folder have many files with format .txt. I need, if i type the folder name in textbox and click the button, in the listbox shows all the files...

[repost] How to list the contents(files) of a search folder in listbox, using C#?

2 Nov 2015 by CgKumar

Hi Friends, i m settle ready the problem. i do some mistake in code. By the way thanks friends for the help. The modified code is:string[] files = Directory.GetFiles(@"\\192.123.1.16\Report\Result\"+ search, "*.txt", SearchOption.AllDirectories);Regards,Thanes

[REPOST] what is this code doing?

6 Jul 2014 by ArunRajendra

Looks like its initializing the matrix with random numbers.

[REPOST] what is this code doing?

6 Jul 2014 by George Jonsson

Hmm, this must be some school homework.It's the second time you ask about this.array[i, j] = lstNumbers[k - 1];The statement assigns the contents of the array element with the index k-1 from lstNumbers into the matrix cell indexed by i and j.You really should read some...

[REPOST] what is this code doing?

6 Jul 2014 by Peter Leow

You already got good advice, so stop re-posting.

[Solved] Could / Should I use threading to yield results from a method?

15 Jun 2015 by Andy Lanng

Hi,I have some code that gets a list of tasks from a db message queue. and yields results. This is running quite slowly so I want to multi-thread it. How can I best implement a multi-threaded version of this:private IEnumerable GetData(){ while (!_cancel) { ...

[Solved] Could / Should I use threading to yield results from a method?

15 Jun 2015 by Andy Lanng

Edit: The solution I went for including tweaks.If you follow the comments, my issue is that there is once process that takes all the time in my ProcessMessage method. There is barely anything I can do while I'm waiting for it to do it's stuff so async was not much of an improvement.I...

[Solved]How to set web method value to controls using jquery

24 Aug 2015 by itsathere

aut(document).ready(function () { debugger; aut("#").autocomplete({ source: function (request, response) { debugger; aut.ajax({ ...

[Solved]How to set web method value to controls using jquery

24 Aug 2015 by OriginalGriff

Answered only to remove from unanswered list - solved by OP.

[WPF] Style is not applied correctly to any button in a stackpanel

18 Jun 2014 by LLLLGGGG

Hi everybody,I have made this in a resource dictionary istantiated in app.xaml:and in a page loaded in a frame inside a window (I put this code inside a...

[WPF] Style is not applied correctly to any button in a stackpanel

16 Jun 2014 by ashok rathod

I think problem is with 1.You can use DynamicResource instead of StaticResource.2.Double Quotes is missing so u can put double quotes at the end of Statement and can make TargetType="Button" 3.After doing all above you can clean your solution.Rebuild your solution and can then...

[WPF] Style is not applied correctly to any button in a stackpanel

16 Jun 2014 by ashok rathod

I think problem is withshould havebecause it might be the case that MainButton style is not available at runtimeYou can also try...

A 64bit Bit-Field in C#

5 Nov 2014 by Jeong, WonYoung(Brad)

Making BitField with C# alternative to BitField made with union and struct of C++

A back button in xaml & C#

23 Mar 2017 by Member 13075342

Okay, so I have been learning Xaml and C# for a little now. I designed a application using some basic navigation however I've stumbled into a problem. So for instance I created different dashboards for different types of users. Those only have access to certain pages. Here is an example:I...

A back button in xaml & C#

23 Mar 2017 by Graeme_Grant

There is no way in WPF Navigation to look at the Back Stack of pages. You have a number of different choices. Here are two off the top of my head:1. Clear history when "User B" logs in: public void ClearHistory() { if (!this.Frame.CanGoBack && !this.Frame.CanGoForward) { ...

A Barebones Implementation of the MVVM Pattern

31 Jul 2015 by Jesse Glover

Breaking down the MVVM pattern

A Better Way to Share Image Assets in Xamarin Forms

13 Nov 2014 by Daniel Vaughan

Learn how to combine T4 and a custom markup extension to share and consume image files between projects.

A bout open the profile page in new tab?

24 Dec 2014 by iamvinod34

I was created a web site in that web site for user purpose profile page also created ... it is opening in one tab but i want even if i open in another tab with out close older tab ... i want it is user login in both tabs

A bout open the profile page in new tab?

24 Dec 2014 by Suvendu Shekhar Giri

Try to be little more descriptive and with little better English. From your question it is not clear about the problem. From what I understood, following may help.ScriptManager.RegisterStartupScript(Page, typeof(Page), "OpenWindow", "window.open('YourPage.aspx');",true);In case this...

A C# Single Application Instance Class

15 Apr 2015 by sx2008

An easy-to-use class to prevent multiple instances of your application from opening and focusing/activating the first instance window.

A Code-First User Interface Library

9 Aug 2015 by Keith Barrett

Describes a 'Proof of Concept' project for a Code-First User interface library.

A data source instance has not been supplied for the data source 'DataSet2'-SSRS

25 Jun 2014 by Appdev(Icode)

Hi(This is my First report using SSRS)I am trying to generate a Report using SSRS in asp.net.My Need is:I want to create a report with the multiple tables(4 tables) which has relation with one another. I have configure each individual table with accepting 1 parameter for eg:...

A Dictionary for Enum Descriptions

21 Apr 2014 by Brady Kelly

A dictionary class for storing string descriptions provided by the Description attribute on enum fields.

A Good Desktop Software in Users' Eyes

26 Sep 2015 by Southmountain

Some take-away to improve the quality of desktop software

a have a error when tyr send email

21 Jun 2014 by User 10230504

i have a error when send email SqlConnection scon_forgott = new SqlConnection(ConfigurationManager.ConnectionStrings["MyConnectionString"].ToString()); scon_forgott.Open(); DataTable...

a have a error when tyr send email

21 Jun 2014 by Fadi Halboni

change EnableSsl to True, and you need the smtp.Port property..... what is the SMTP port???such as: Gmail port is 587SmtpClient client = new SmtpClient();client.Host = "smtp.gmail.com";client.EnableSsl = true;client.Credentials = new...

a have a error when tyr send email

21 Jun 2014 by Raul Iloc

The error seems to be related to your SMTP settings.Your SMTP server is not accessible - wrong IP address, username or password. Also the port for SMTP client should be 25 (the default value) but you should check on your SMTP server about it. You could also try to increase the value of...

A network-related or instance-specific error occurred while establishing a connection

15 Mar 2018 by Member 10225052

Hi,I have a asp.net mvc5 application.But sometimes I get this error(see below). But the strange thing is that, after I clear cache in the browser the error dissapear.Quote:A network-related or instance-specific error occurred while establishing a connection to SQL Server. The...

A network-related or instance-specific error occurred while establishing a connection

15 Mar 2018 by ONEGO SOLUTIONS

TITLE: Connect to Server ------------------------------ Cannot connect to admin-PC or server. ------------------------------ ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not...

A Plug and Play Logging Library for Dummies

20 Dec 2015 by shijo joseph

An easy to implement yet powerful logging library which requires absolute zero learning curve

A Project with an output type of Class Library cannot be started directly.

28 Jan 2021 by z_azad

I have installed Async-CTP-v3 for using new feature of C# 5 but when I tried to run a console application using async keyword/await expression this error appeared:"A Project with an output type of Class Library cannot be started directly.In order to debug this project, add an executable...

A Project with an output type of Class Library cannot be started directly.

30 Jul 2012 by Wes Aday

To get this off the unanswered list, this question was answered here[^]