Error When Connecting A Database To A User Control?
Jan 30, 2011
2. I developed a form that had a combo box and Data grid view control The combo box is fed (linked) to a Access database list. The data grid view control is fed (linked) to multiple Access Databases. When I choose a name in the combo box, it loads a new database into the datagricview control. It works great. No errors. Note that all the databases are in my project file.Could not find file 'C:Program FilesMicrosoft Visual Studio 10.0Common7IDEBALSAMFIR.accdbI don't understand why it works in the form but not in the user control and why it thinks it needs to find the file in Common7/IDE/.
i am building my first VB.net application with a connection to an Access database. Now, this works fine when I debug, however when I deploy the application I get the error saying "Could not find file", which I assume means i have got one of the publishing settings wrong? I don't think it is a code error because it works when I debug, but if anyone wants to see part of it please let me know.
good mornign here again =D having a problem with connecting to a remote database via adhoc we are using a windows 7 ultimate 32bit OS platform =D
here is the connection message im encountering
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.)
i have already enable the the Remote Connection enabling the both TCP/IP and name Pipes and its server authentication of our both msSQL server 2005 is SQL SERVER AND WINDOWS AUTHENTICATION MODE
and also i put a check in Allow Remote Connections to this Server...both our laptops...
but still encountering the problem... the default gateway of our adhoc is 192.168.137.1
sample code how i connect to the database
Imports System Imports System.Data Imports System.Data.SqlClient
I am connecting to Citrix database using SQL-defined ODBC. Having a problem with it. I am updating an existing application that uses the ODBC in SQL, and it connects fine. However, that database connection is secured, only available on the production side. The test side has a remote connection. I am attempting to change the remote connection values to match the parameters of the SQL-based ODBC, but the labels are different, and it doesn't seem to match. Specifically, I don't think I'm getting the DataSource correct. Also, it can't find the username and password that I use to log into the remoter connection - I get an error message "Invalid authorization specification".
i have a website www.aybydinnovations.com.I setup a new mySQL Database into my webserver.I am developing vb.et application that will connect into that database from my webserver.
Here is my codes: Imports System Imports System.Windows.Forms Imports System.Net.WebRequestMethods Imports MySql.Data.MySqlClient
I have a problem here I did make database program for a friend the database is online Mysql I use Visual Studio and put this into setup.exe when he install the program and try to log on he get this error This is my connection to the database
How do I open my Crystal Report in VB code (RPT files) on password-protected Access 2007 database? Ever since I protected my database with password, my Crystal Report generates an error.
I have a MySQL database I've created for my website, [URL]. I want to query the database, but I am unsure how to connect.
This is the code I'm using:
Code: Dim sConnection As String = "Provider=MySQLProv;Data Source=my_database;User Id=my_user;Password=my_pass;" Dim bSuccess As Boolean = True
[CODE]............
The MsgBox() returns a message that says: "Error: The 'MySQLProv' provider is not registered on this local machine". All I want to do is access the table in my database, is it possible? (also, without installing anything additionally?)
Does the .NET framework include ways to access MySQL databases easily?
Im using VB 2008 and SQL Server 2008 as its database. But i have encountered this error in connecting to my database. An Expected error has occurred. Error Message: Count not load type [Code] What's seems to be the problem? or what this error message means.
I work with VB6 SP6 under windows XP SP3.I' ve created a user control activeX. When I create some instance with the command : Form1. Controls. Add I have this error : "Error '50003' Unspecified error" if I create too many instances.
For Index = 0 To UBound(obj) Set obj(Index) = Form1.Controls.Add("MyUserCtrl.MyClass", "Label" & (Index)) obj(Index).Visible = True next index
I am using a user control using vb.net. It include the program to retrieve the values from database while giving the paramers. When I set the property from my main program i am getting an error "Invalid attempt to call Read when reader is closed." When i gone to the online help i got the message as follows "System.InvalidOperationException (.NET Framework 4)The exception that is thrown when a method call is invalid for the object's current state. InvalidOperationException is used in cases when the failure to invoke a method is caused by reasons other than invalid arguments. For example, InvalidOperationException is thrown by IEnumerator.MoveNext if objects of a collection are modified after the enumerator is created, or ResourceSet.GetString if the resource set is closed before the method call is made. If the method invocation failure is due to invalid arguments, then ArgumentException or one of its derived classes, ArgumentNullException or ArgumentOutOfRangeException, should be thrown instead.[code]
I'm trying to make a simple User control that houses one collection of a class that I've made. After building the control All works as planned and then randomly when I try to go to the design time interface for the form I placed the control on I get an error page with the following:
To Prevent Possible data loss before loading the designer, the following errors must be resolved:(ignore and continue: which about half the time works and the control shows up and the other part of the time all of the controls on the page are missing)
The one error is the following:Object of type'System.Collections.Generic.List'1[StaticGraphPlot.clsStaticCurveData]' cannot be converted to type System.Collections.Generic.List'1[StaticGraphPlot.clsStaticCurveData]'.
I need video chat application in my project.I had created VB.NET user control in class library project for Video Chat and its working.
But when i am trying to load user control in c# web page. While Executing i am getting security error as....
Application attempted to perform an operation not allowed by the security policy.<br/> To grant this application the required permission,<br/> contact your system administrator, or use the Microsoft .NET Framework Configuration tool.<br/> If you click continue, the application will ignore this error and attempt to continue.<br/> System.Security.Permissions.SecurityPermission<br/>
I want to add a List(Of Book) property to my user control. I defined a Book class and BookCollectionEditor class for CollectionEditor. And also I defined a public property named BookList for my user control. For a custom control it works fine but for user control, the designer does not display my property. On markup I can add a Book item but on designer it gives error: "Type 'System.Web.UI.UserControl' does not have a public property named 'BookList'."Isn't is possible to define a list property for a user control?
<TypeConverter(GetType(ExpandableObjectConverter)), Serializable()> _ Public Class Book Private _name As String Private _author As String
I have an application going here Form1 has a panel on it named TargetPnl. I need my TargetPnl to display my user control named Vviewer when I click my SearchBtn and also need it to disappear when I click another button.
What I have is a user control that has two RichTextBoxes. In the user control, there is RichTextBox1's TextChanged event, I want it to set RichTextBox2's Text to the same as RichTextBox1's Text, I'm currently using: RichTextBox2.Text = RichTextBox1.Text. The user control is on the main form, when I run the application and type I get this error: StackOverflowExecption was unhandled. [Code]
I'm using Visual Basic Express 2010 and SQL Express 2008 in Windows XP. At first I couldn't add a datasource (the .mdf file for the database) because of a "Operating system error 32" which I seemed to have resolved by giving myself full permissions for .mdf file (by right clicking on the file and going into properties and then Security) and restarting the SQL SERVER (SQLEXPRESS) service. The dataset for the database is in my solution explorer but when I right click on a table adapter to add a query and attempt to open up the query builder, I get the error in the title above.
how can i call a VB function - deleteevent() in usercontrol.ascx.vb from a javascript function in clickhandler(e) in usercontrol.ascx. The call should cause a postback because I need the usercontrol to display the changes.I am currently trying to do it by using a linkbutton with style display:none, and calling its click event from the javascript function. But i dunno how to call the click event.
In a batch file that logs a user in to a network from a laptop connecting by VPN, the command window displays both the user's login name and the password. Is there some way I can prevent the password from being displayed? How do you hide characters in a command window?
I have an aspx page that has two different user controls. I want to find user control A and be able to set properties, etc., from user control B.
I was thinking I could do something like this:
Dim CMFilters As Control = Me.Parent.FindControl("CMFilters")
...but that doesnt work to be able to set properties and call methods. I somehow need to get the user control and and declare it as that user control type.
I now realize that it is incorrect because the container's InitializeComponent property initializations have not run yet and they must be run prior to Refresh being called.
How (where) can I run Refreash after the container has initialized this user control.[cod]e...
i am using vb.net 2005 to developed desktop application I am having two windows form user control , the first control name con.vb containing the design and code for connecting to database and getting a list of my project values in combo box.
Now the second user control report.vb which i am using to generate some reports , since the code behind is using connection to connect to various project database , so i want to get the value of
First user control into another how i can get the i have tried the below but its giving me error in run time but no error in design or code behind -
'm creating with Visual Studio 2005 Windows application using a simple MDI as the main.This application must connect to a database, calling store procedures.I have an error in the connection.
Main MDI : Dim da As New SqlClient.SqlDataAdapter Dim ds As DataSet = New DataSet
Yesterday i was developing an application at home, i copied that application along with the db(sql server db) and brought it to office to continue it.
But when it tried connecting to the db, i got this error
Quote:
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)
I am trying to learn sql server. The error is talking something about Remote Connections, but my db is local, it lies on the desktop.
I'm trying to write a method in VB.net so that when I click a button it queries the database and returns all the values which match a textbox which is located next to the button. I have no idea how to do this, I assume in the onclick method for the button I will need to pull in the value from the textbox, connect to the database and display the results to a gridview?
