problem about sqlclient-Collection of common programming errors

11 years ago
admin
4 minutes

  • KyleMit
    c# linq wcf exception sqlclient
    I couldn’t figure out what is the problem for this exception. The type initializer for ‘System.Data.SqlClient.SqlConnection’ threw an exceptionFirst attempt: I was using the WCF Service to make some small application. It works just fine and I can use the LINQ properly. After 2 or 3 days. Maybe after I close Visual studio and load the project again. The exception appear.The 2nd attempt also the same. I create another project and it work just fine until I do something else (I do not change any cod

  • user1778345
    c# sql-server sql-server-2012 sqldatatypes sqlclient
    Some background:I’m running two different installations of SQL Server on two different VMs. I’m attempting to connect to them from my code (which was written for SQL Server 2008 R2). My current .NET framework version is 4.0. My Microsoft SQL Server 2008 R2 installation is running the AdventureWorks designed for it, and my SQL Server 2012 Express installation is running the newer AdventureWorks2012 database. I’m querying Person.Address.Currently I’m running into an exception saying “DataType cann

  • Faisal
    .net sqlclient
    I have a process where two threads are continuously executing sql queries on the same tables. Is there any chance that one of these two threads gets Timeout error? If so, what is the best practice to avoid this?I am getting following error and resulting is process crash.Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.

  • Ofear
    tcp system provider sqlexception sqlclient
    My web site was working flawless in the old Host, But now i Moved to a new hostPlease pay attention: The Old host was a VPS on the same hostSo i’v stoped paying him and now i’m hosting on the same host as a shared host.So I moved all the files in to the root folder and config the SQL details in the Web.configI can’t load the site for some reason. i got Errors all the time. PLEASE HELP ME!After I Fixed my Ajax problem.. Here ->Could not load file or assembly System.Web.Extensions, Version=1.0.61

  • Colin Mackay
    .net sql-server ado.net connection-string sqlclient
    I can’t seem to connect to my local database. Everytime I run it, it gives me a pop up blank windows (blank command line windows).What do I miss?using System; using System.Collections.Generic; using System.Text; using System.Data.SqlClient;namespace dbtest1 {class Program{static void Main(string[] args){string myConnectionString = “Initial Catalog=myDB;Data Source=localhost;Integrated Security=SSPI;”;SqlConnection myConnection = new SqlConnection(myConnectionString);string myInsertQuery = “INSER

  • Molloch
    .net sql-server sqlclient
    We have a very data centric application, which is often run across networks with questionable connectivity.We want to feedback to clients when the database is offline, and display some kind of warning screen – with error information – until the network comes back and the database is available again. I’d like to display the same screen whenever the database is unavailable for any reason – ie: service stopped, paused, login failure, network off, etc.I have a routine handling SQLClient.SQLException

  • Michael Petrotta
    c# sql windows-services sqlclient
    I have a .Net/c# 2.0 windows service. The entry point is wrapped in a try catch block that notifies me of problems and allows the service to continue operating normally yet when I look at the server’s application event log I see a number of “EventType clr20r3” errors that are causing the service to die unexpectedly. The catch block has a “catch (Exception ex)” and does not rethrow the exception.Each sql commands is of the type “CommandType.StoredProcedure” and are executed with SqlDataReader’s

  • j.i.h.
    sql-server vb.net logging exception-handling sqlclient
    I created an exception logging system by having a handler for System.Windows.Forms.Application.ThreadException. I am fairly confident in the soundness of my logging, but this is making me wonder what could be causing this. And furthermore, how so many Exceptions could be logged onto the server when the server is so slow it’s causing timeouts.Basically, there have been a few instances when our SQL server was doing an import process in the middle of the day and users were getting SqlExceptions w

  • user1428798
    stored-procedures sql-server-2008-r2 mapping dapper sqlclient
    I have a model this model: public class Member{#region public propertypublic int Id { get; set; }public string LastName { get; set; }public string FirstName { get; set; }public AccountState AccountState { get; set; }public GodFatherType GodFatherType { get; set; } }AccountState and GodFatherType Are both 2 eumerates:public enum AccountState {NotActivated = 0,Activated = 1,Desactived = 2,}public enum GodFatherType{Undefined=0,unknown = 1,Correct = 2,}In The database I have Id, LastName, FistName

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