I am working on a set of webforms that insert user data into a set of db tables.
I set up a test of an approach using northwind and I'm having trouble getting the insert to work. When I open the form, input the name and phone, and submit there is no error, but no record inserted into the Shippers table.
You can see one of my approaches in the ASPX code. I don't like having to do the select in order to do the insert -- so that's commented off.
I'm stuck. Thoughts about what I'm missing appreciated...
Ray
ASPX code.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default66a.aspx.cs" Inherits="pages_audit_Default66a" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
Public Conn As New SqlConnection("Data Source=localhost;Initial Catalog=tblUsers;UID=XXXX;pwd=XXXX")Public Conn As New SqlConnection("Data Source=XX.XXX.XX.XXX;Initial Catalog=tblUsers;UID=XXXX;pwd=XXXX") This two commands are in my application. I switch between the two so I can test my application. When I put my application on the server, I use the localhost SQLCONNECTION. The other is commented out. However, the application continues to connect to the server with the address that is commented out. THIS IS VERY FRUSTRATING... HELP!!!!
Hi, Someone can explain to me what happend in this situation...i have this and want to call a procedure with connection parameters protected void Button1_Click(object sender, EventArgs e) {
SqlConnection edo = new SqlConnection(); edo.ConnectionString = "server=myserver; uid=admin; pwd=; " + "database=name1"; SqlCommand com = edo.CreateCommand(); com.CommandType = CommandType.Text; My_proc(edo, com); } protected void My_proc(SqlConnection edo , SqlCommand com) { try {edo.Open(); } catch{} finally{ edo.close();} }
Well what happend with the SqlCommand and SqlConnection when return to Button_Click() Are they alive? Can be used in Buton_Click like parameters for another procedure? or i have to create it again?Thx in advance..
please help me !!!?I have a problem with sqlconnection definition when I add the sqlconnection from toolbox :like this: Imports System.Data.SqlClientPartial Class _Default Inherits System.Web.UI.Page Private Sub InitializeComponent() Me.sqlConnection1 = New System.Data.SqlClient.SqlConnection Me.sqlConnection1.ConnectionString = "Data Source=server;Initial Catalog=masterstd;User ID=sa" Me.sqlConnection1.FireInfoMessageEventOnUserErrors = False End Sub Private WithEvents sqlConnection1 As System.Data.SqlClient.SqlConnection Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If Not IsPostBack Then Dim cmduniversity As SqlCommand Dim dtruniversity As SqlDataReader cmduniversity = New SqlCommand("select * from university", sqlConnection1) sqlConnection1.Open() dtruniversity = cmduniversity.ExecuteReader dtruniversity.Close() sqlConnection1.Close() End If End SubEnd Classin the sqlconnection.open the nullrefrence exception occures butwhen i define myself this exception dosn't occure.like this: Imports System.Data.SqlClientPartial Class _Default Inherits System.Web.UI.Page Private Sub InitializeComponent() End Sub Private WithEvents sqlConnection1 As System.Data.SqlClient.SqlConnection Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If Not IsPostBack Then sqlConnection1 = New SqlConnection sqlConnection1.ConnectionString = "Data Source=server;Initial Catalog=masterstd;User ID=sa" sqlConnection1.FireInfoMessageEventOnUserErrors = False Dim cmduniversity As SqlCommand Dim dtruniversity As SqlDataReader cmduniversity = New SqlCommand("select * from university", sqlConnection1) sqlConnection1.Open() dtruniversity = cmduniversity.ExecuteReader dtruniversity.Close() sqlConnection1.Close() End If End Subwhere is the problem?
Can someone help me out? I am trying to establish a SQL server connection in my C# code. My C# code crasheds though. Can someone tell me what Iam doing wrong? Here is the C# code:
SqlConnection myConnection = new SqlConnection(ConfigurationSettings.AppSettings["TheDividerConnectionString"]); Here is the connection string as defined in the web.config file: <connectionStrings> <add name="TheDividerConnectionString" connectionString="Data Source=BVCOMPUTERSQLEXPRESS;Initial Catalog=TheDivider;Integrated Security=True" providerName="System.Data.SqlClient" /> </connectionStrings>
Would anyone ahve any ideas why when i debug this code, it stops and freezes at cn.open(); A raw sql query against the DB works in this format. int top=10;SqlConnection cn = new SqlConnection("Data Source=blah;Initial Catalog=blah;Integrated Security=blah"); SqlCommand cmd = new SqlCommand("SELECT DISTINCT TOP (@nrows) [CustNu] FROM [Customer] WHERE [CustNu] like @term", cn);cmd.Parameters.AddWithValue("nrows", top);cmd.Parameters.AddWithValue("term", prefixText + "%");
List <string> suggestions = new List<string>(); cn.Open();
HiI would like to have some help for my problem.I'm trying to retreive the connectionString "MyConnectionString" from app.config using method 1 or 2 to get a connection to my DB (without any success.) --> Partial codepublic SqlConnection GetConnection() { // reference to System.Configuration Library is done 1 SqlConnection Connection = new SqlConnection(ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString);--> thrown NullReferenceException on Conn.Open(); 2 SqlConnection Connection = new SqlConnection(ConfigurationSettings.AppSettings["MyConnectionString"]);--> thrown InvalidOperationException ConnectionString not initialised return Connection; } public Contest GetContestFromDB() { SqlConnection Conn = GetConnection(); Conn.Open(); ->> thrown Exception 1 or 2...Here my app.config :<?xml version="1.0" encoding="utf-8"?><configuration> <appSettings> <clear/> <add key="MyConnectionString" value="Server=.SQLExpress;AttachDbFilename=D:Documents and Settings0xMesdocumentsApp_DataShopperDB.MDF;Database=ShopperDB.MDF;Trusted_Connection=Yes;"></add> </appSettings> <connectionStrings> <clear/> --> using <clear/> to avoid to load from machine.config <add name="MyConnectionString" connectionString="Server=.SQLExpress;AttachDbFilename=D:Documents and Settings0xMes documentsApp_DataShopperDB.MDF;Database=ShopperDB.MDF;Trusted_Connection=Yes;"></add> </connectionStrings></configuration> I'm using Visual Studio 2008 with SQLServer 2005 Express Embedded and WindowsXP SP2 .Have you got any idea ?I'm not able to sleep anymore...And I've test this code in ASP.net with the same ConnectionString in the web.config file and it works !!I'm lost.By the way, thx if ou get an answer ww4ss
Hi I have the next simple code, what do i have to change to match it to SQL? The code: Sub Page_Load (Source As Object, E as EventArgs) dim strConn as string =("Provider=" & "Microsoft.Jet.OLEDB.4.0;" & _ "Data Source =C:webspacesegolforferaforfera.co.ildbguestbook.mdb")
Dim MySQL as string = "SELECT Name, EMail, URL, Comment FROM Guestbook" Dim MyConn as New OleDBConnection (strConn) Dim Cmd as New OleDBCommand (MySQL, MyConn) MyConn.Open () rptGuestbook.DataSource = Cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection) rptGuestbook.DataBind() End Sub Thank's and have a good day.
I have a database for each of my customers and want to connect to a database depending on who is logged in. all my users have their database name in the user profile. how can i use the database name in the user profile to change the initial catalog to connect to aaother database?
Hi there, I'm not sure if the way I handle SqlConnection in my apps is the most performant one.So my apps use db heavily and there are loads of classes with methods like 1 using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["myConn"].ConnectionString)) 2 3 {conn.Open(); 4 // more code here 5 } 6 7 As I use using the connection is closed and the object is disposed when leaving the code block.I know that the connection is taken from a pool and when closed it returns to the pool as though I'm not sure if it is better to have one "global" SqlConnection objectand to use that object for all classes or most of them. What about the ConfigurationManager, doesn't it slow down the performance as well when I'm accessing the ConnectionString value thousands of times?I hope someone can point out the issues.Many thanks in advance, Limbic
I need some information on sqlconnnection object. I see it referenced in some exercises, and also displayed in the toolbox on some articles, but I'm running .net 2.0 and I have no sqlconnection in my toolbox, but more importantly, I can not seem to drop the data connection from my database/server explorer to my form to create a sqlconn object. When I highlight the data connection (in my case it's machinenamesqlexpress.pubs.dbo) and try to drag it - it immediately goes to a NO icon (that is a circle with a slash thru it) and I can not drop it onto my form. I can see the database with no problems in explorer. I have been able to create a sqlconnection programatically: Dim sqldatasource1 As SqlConnection = New SqlConnection() sqldatasource1.ConnectionString = "Data Source=localhostsqlexpress;Initial Catalog=pubs;Integrated Security=True" but how can I create it on my form?? I would appreciate any help on this matter.
I have created an aspx page that uses the SqlConnection class to pull data from Microsoft CRM’s database, and we have placed this aspx inside CRM’s directory on the server so that it uses the same integrated security that CRM uses. This works fine on our test environment but on our live environment the Sql connection fails with the exception: "Not associated with a trusted SQL Server connection" This is probably because our test CRM server has the database on the same machine as the web server, but the live environment has the database and the web server on separate machines. So my question is how can I create an aspx page that takes the integrated security credentials that the user used to log into the website and uses them to access data from a database on a seperate machine?
Hi,When using the following controls....System.Data.SqlClient.SqlConnection System.Data.SqlClient.SqlCommandIf I want to change my SQL command and execute the query once again what cleanup do I need to do first?Do I need close and dispose the SqlConnection?Do I need to dispose the SqlCommand?Can I use the SqlConnection for more than one SqlCommand?Thanks,Scott
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) this problem occured when i rum my program which contain database connection any one there can help me please?
Hi all, I am accessing one database a bunch of different times all throughout my code...in various functions and different web pages. Is there a a way to create an sqlconnection that I can access all the time, instead of constanting hardcoding which database to go to? I've tried putting the info in another file and just including it where I want the database to open, but I can't use <!-- #INCLUDE --> inside of the server scripts. Can anyone help
How much of a performance difference is there between connecting to SQL Server 2000 using OleDbConnection or using SqlConnection?
The reason I'm asking is I am taking on the task of updating an older program that uses a Access Database to use SQL Server, but it has a Database Utility class that uses OleDbConnection. I'm just debating whether it would be worthwhile to upgrade the class to use the SQL objects rather than Oledb. Program does a lot of update and insert of invidual records, and a few select statements that usually return from 1 to 2000 records up to a maximum of 50,000 records
I've an web app with impersonate windows authentication. IIS uses Windows authentication for this app & anonymous authentication is turned off. This app have connectionString in Web.config where Windows autentication (SSPI) to SQL Server 2000 took place. Now I've a piece of code:
public class SiteParameters { public static SqlConnection Connection { get { SqlConnection conn; try { conn = new SqlConnection(ConfigurationSettings.AppSettings["connectionString"]); if(conn.State != ConnectionState.Open) conn.Open(); } catch(Exception) { conn = null; } return conn; } } }
No comments is needed, think... Now, I'm going to use it in following way:
SqlConnection conn = SiteParameters.Connection; SqlDataAdapter dta = new SqlDataAdapter(); DataSet ds = new DataSet();
SqlCommand sqlSelect = new SqlCommand("spPlanTransportSelect", conn); sqlSelect.CommandType =CommandType.StoredProcedure;
It looks good & works good... on local machine only :( When I run app locally (doesn't matter if I call it by http://localhost/app, http://127.0.0.1/app or http://10.50.2.51/app I take proper data from database. But when my buddy from another comp (e.g. 10.50.2.52) uses URL http://10.50.5.51/app he receives an error in line dta.Fill(ds, "PlanTransport");, but in fact conn variable is null & he receives "yellow" screen where is written that NT ANONYMOUS user is trying to log on to database... It looks strange for me. Any tips?
I tried connected my web form with SQL server by drag a table from Server Explore onto the WebForm1.aspx. page. It created a sqlConnection1 and a sqlDataadapter object, but theses two objects seem not work. There is nothing displayed on property window and when I right-click sqlDataAdapter there is no "Preview Data", "Configure Data Adapter" and "Gnerate Dataset" items displayed as well. I used this SQL server on Windows Form, it worked very well. Could anyone please help me figure it out. Thanks!
Hello all, Actually i want to known, is their any method or property in SqlConnection class which will return some value, so that through which we become confirm that connection has established.
I have a code that runs from a different machine and a different site and i am facing a problem that i can not log in to the database.I installed SQL Server on my machine and I created a user "fadila" and SQL Server Authentication and the password is "fadil1977" and the database is "otters" and it is installed as tables and stored procedures but there is not data on these tables.
I used the method provided in the code so, i only change the "connStr" in one place rather than in 20 places and my code is as below. Can you please Help me to connect to the database. I Really..Really appreciate it if you help me to solve it as it causeing me a big head-ache and still get the error message "SQL Server does not exist or access denied" .. please help!!!!
Friend Shared ReadOnly Property connStr() As String
If i use the TimeTracker app from the starter kit suite and I enter my SQL connection in the web.config file it works fine,
If i build a simple app with just a sqladapter, sqlconnection and dataset control then enter in the page_load procedure
sqlDataAdater1.fill(dataset11) datagrid1.databind() It keeps giving my errors see below: I created a connection with the sqlconnection control and used the same userid and password I used in the time tracker stater kit's web config file which works - I have no idea what is going on
*** is it better to create the sqlconnection control first then create the sqladapter or vise versa. Server Error in '/WebApplication2' Application.
Login failed for user 'IssueTrackerUser'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'IssueTrackerUser'.Source Error:
Line 55: Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Line 56: 'Put user code to initialize the page here Line 57: SqlDataAdapter1.Fill(DataSet11) Line 58: DataGrid1.DataBind() Line 59: Source File: c:inetpubwwwrootWebApplication2WebForm1.aspx.vb Line: 57 Stack Trace:
I used to use rdo in VB6 and now I'm trying to figure out how to use the SqlDataReader class in VB.NET. I want to use an ODBC data source to specify the connection info. I used to give the rdoConnection object a connect string that looked something like this:"DSN=[data source name];UID=[sql server user];PWD=[pwd]"I don't understand the connect string given in all the examples I've found (nor does it seem to work on my system...) mySqlConnection = New SqlConnection("server=(local)VSdotNET;Trusted_Connection=yes;database=northwind")Does anyone have any ideas? I'm open to explanations as well as solutions :)Thanks,jdm
Hello, I've got some questions about SqlConnection.Parameters collection. 1) I tried add parameters and I don't know if following 2 codes are equivalent sql.Parameters.Add(new SqlParameter("@FirstName", SqlDbType.NVarChar, 10));sql.Parameters["@FirstName"].Value = firstname;-----sql.Parameters.Add("@FirstName", SqlDbType.NVarChar, 10);sql.Parameters["@FirstName"].Value = firstname; Is some difference between this codes? Or in second case is created instance of SqlParamater automaticly? 2) I read that Add method is in asp.net 2.0 deprected. And now it uses Addwithvalue method, but when I don't write value of Parameter to the constructor, can (should) I use still Add method? In this case VS doesn't show any warning. VS shows warning only if I use value (object) in constructor.
In my web app, I have a number of nonvisual objects that share a SqlConnection. On one of my pages, I have a SqlDataSource ('cause it's quick and just needs to wrap a table). Is there any way to tell it, "Here, use this existing database connection?" In my quick and dirty testing, it looks like it's opening a second connection, which is wasteful.
I'm trying to connect to my SQL SERVER 2000 database via Sqlconnection command with the code below,do I need to do something else to make sure the database is really opened ..I keep getting error at
conn.Open(); which I dont know what do about ..
any help will be really appreciated
using (SqlConnection conn = new SqlConnection("Server=" + dbServer+";Database="+dbDatabase+";"))
I am having a hard time finding information about this error online. I was hoping someone could help me with it. I am working with MS Visual Studio 2005. The SQL Server version is 2000. The error bellow says I am trying to connect to SQL 2005. Also, I can use MSVS Server Explorer and SQL Server Enterprise Manager to connect to the database.Here is my code:
imports System.data Dim Connect As New SqlClient.SqlConnection Dim Adapter As New SqlClient.SqlDataAdapter Dim St As New DataSet Dim ConnectString As String ConnectString = "Data Source=MANDB01;Initial Catalog=MANCON_WEB;Integrated Security=True" Connect.ConnectionString = ConnectString Adapter.SelectCommand = New SqlClient.SqlCommand("select * from item_cat1", Connect) Adapter.SelectCommand.Connection.Open() Adapter.Fill(St) Connect.Close() The browser is reporting this error: An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
Hi there, I saw more than a dozen on this topic, even the problems has been solved. But there are no postings on how to solve this issue. In the development environment we're using SQL 2000 and in testing environment we're using SQL 2005. I have no issue in the development environment, but unable to connect to SQL 2005 in the test environment. Can anyone provide some suggestions? web.config I got the following at works with SQL 2000. <appSettings> <add key="MyConnection" value="Integrated Security=True;User ID=x;password=y;Initial Catalog=Fruit;Data Source=SQL2005DEV"/> </appSettings> After the user click on the submit button, I got the following code. Dim conStr As String ConStr = ConfigurationManager.AppSettings("MyConnection") TIA Steve
Below is my code right now Im using a direct sqlconnection for each request. I would like to use Tableadapters and/or my BLL code like the rest of my sites pages. I cant find how to do this progamatically and using the xmltextwriter. (Also i need to be able to name the xml output nodes like below)Thanks for the help.NeilPrivate Sub GetAllEvents(ByVal SqlString)    Response.Clear()    Response.ContentType = "text/xml"    Dim objX As New XmlTextWriter(Response.OutputStream, Encoding.UTF8)    objX.WriteStartDocument()    objX.WriteStartElement("Events")    Dim objConnection As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|*********.mdf;Integrated Security=True;User Instance=True")    objConnection.Open()    Dim sql As String = SqlString    Dim objCommand As New SqlCommand(sql, objConnection)    Dim objReader As SqlDataReader = objCommand.ExecuteReader()    While objReader.Read()      objX.WriteStartElement("Event")      objX.WriteAttributeString("EventId", objReader.GetInt32(0))      objX.WriteAttributeString("EventName", objReader.GetString(1))      objX.WriteAttributeString("EventDescription", objReader.GetString(2))      objX.WriteAttributeString("EventDate", objReader.GetDateTime(3))      objX.WriteAttributeString("CurrentDate", Date.Now.ToString)      If Not objReader.IsDBNull(12) Then        objX.WriteAttributeString("EventImage", objReader.GetString(12))      End If      objX.WriteEndElement()    End While    objReader.Close()    objConnection.Close()    objX.WriteEndElement()    objX.WriteEndDocument()    objX.Flush()    objX.Close()    Response.End()  End Sub
This actually goes back to another post...I need the user to state which specifics to use when connecting to a server. I have text boxes set up and I need to have thier input placed into the New SqlConnection statement. I have used the below which did not work... 'dim connorthwind as New SQLConnection ("Server=" & strservername & ";UID=" & strUsername & ";PWD=" & strPassword & ";database=master") See below for my code: <%@ Page %><%@ import Namespace="System.Data.SqlClient" %><%@ import Namespace="System.Data" %><script runat="server"> Sub Button_Click( s As Object, e As EventArgs ) dim conNorthwind as New SqlConnection( "Server=dbtest1;UID=cbtest;PWD=password3;database=master" ) Dim strInsert As String Dim cmdInsert As SqlCommand cmdInsert = New SqlCommand( "sp_password_sec", conNorthwind ) cmdInsert.CommandType = CommandType.StoredProcedure 'cmdINsert.Parameters.Add( "@loginname", txtname.text ) cmdINsert.Parameters.Add( "@oldpwd", Password.text ) cmdINsert.Parameters.Add( "@newpwd", txtnew.text ) conNorthwind.Open() cmdInsert.ExecuteNonQuery() conNorthwind.Close() End Sub </script><html><head></head><body> <form runat="Server"> <h2>Password Change </h2> <b>User Name</b> <br /> <asp:TextBox id="username" Runat="Server"></asp:TextBox> <p> <b>Server Name</b> <br /> <asp:TextBox id="Servername" Runat="Server"></asp:TextBox> </p> <p> <b>Database </b> <br /> <asp:TextBox id="txtdatabase" Runat="Server"></asp:TextBox> </p> <p> <b>Old Pass</b> <br /> <asp:TextBox id="Password" Runat="Server"></asp:TextBox> </p> <p> <b>New Pass</b> <br /> <asp:TextBox id="txtnew" Runat="Server"></asp:TextBox> </p> <p> <asp:Button id="Button1" onclick="Button_Click" Runat="Server" Text="Lookup!"></asp:Button> </p> </form></body></html>
Hi all.I am using VB.Net 2002 (.Net Framework 1.0) and Sql Server 2005 Express Edition as a database. I am following a tutorial to create a connection to a database.I have written this code to import namespaces at my .aspx file. <%@ import namespace = system.data%><%@ import namespace = system.data.sqlclient%>And, I also put this code at my Page_Load event that resides at .aspx.vb file. Dim conn As sqlConnection conn = New sqlConnection("server=SEN-M092082D001SQLEXPRESS;database=test;Trusted_Connection=Yes") conn.open() lblItem.Text = "Connection Opened!" Those codes builds an error which is "Type sqlConnection is not defined". Can someone explain to me why this happen? I already imported the namespaces
I'm attempting to create an ASP page that generates a report from a user-selected table on a user-selected server. Is it possible to employ a variable to define the "server=" attribute in the SqlConnection method, and what would the syntax be? Thanks.
I am inheriting all my webpages from a BasePage which is storing my sqlconnection to the database. I open the connection in the "protected override void OnInit()" method (is this right?) but I don't know where I should write the close the connection. Can anyone give me any suggestions? Regards EO
