Bind TCP Server To Specific Adapter?
Jan 6, 2010
How can I specify which adaptor to begin listening on?
I have an application running on a PC which happens to have 2 network adaptors running on different subnets (one network for Business LAN infrastructure, one for TCP cameras)
I have a class which opens up a TCP server and listens on a specific port for connections coming in from clients on the LAN.
The problem is that my TCP server class initialises and begins listening on the adaptor which is connected to the cameras. Any connection request coming in from the Business LAN fails, it is not dealt with.
The question is, How can I specify which adaptor to begin listening on?
Code excerpt below (this is not the full class, just key methods)
Public Sub New(ByVal Name As String)
'get config
_bootStrap = New TCPServerBootstrap(Name)
[Code]....
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Mar 31, 2010
How can I disabel and enabel a specific adapter?(restart a specific adapter by vb code)
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Apr 3, 2010
How can I disabel and enabel a specific network adapter? (restart a specific network adapter by vb code)
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Sep 15, 2009
I have a datasource linked to a table in a database.When I wnated to display this data on a form, I just dragged the datasource onto the form and it did everything for me, including the code to fill it;
Me.ProjectFileTableAdapter.Fill(Me.ProjectFileDataSet.ProjectFile)
My problem, is that this program will have multiple users, and I don't other users to be able to see each others data. So the problem with the above statement is that it fills the table with ALL the data in the datasource. How can I make it only display data that is for a specific user?Here's the code that is used to fill the tableadapter:
Private
Sub
frmViewCurrent_Load(ByVal[code].......
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Sep 12, 2010
I'm thinking if its possible to merge 3 exe files ( A, B, C) into one? ( to make it look neater) And using VB to select and run A.exe
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Feb 24, 2009
know it is possible to have bounded and unbounded columns in a datagridview.Is it also possible to have bounded and unbounded rows?I knows its unorthodox, but I want to have two rows in my datagrid per item in my object list One row is bounded to the properties of each item; below that I want an unboundedrow of checkboxes for each property But since when binding the datagridview sets the rowcount equal to the list count, I'm not sure its possible.
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Feb 24, 2012
I would like to bind different queries for a long set of columns in datagridview that has been set already during the formload, e.g:
With dgvGrid
.Columns(0).Name = "Dept Code"
.Columns(1).Name = "Emp ID"[code]....
there are still more of it. The data needed for those columns is coming from a different table.
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Apr 27, 2010
I have a datagridview linked to a dataTable loaded from a sql server via an adapter.I wish to sort one of the column: Filenumber.The Columns is a string. For example:
M-099
M-756
M-777
M-1000
But when i sort the columns by using Me.DataGrid.Sort(DataGrid.Columns(9), System.ComponentModel.ListSortDirection.Ascending), it turns out to be:
M-099
M-1000
M-756
M-777
I would like to know how to sort it like:
M-099
M-756
M-777
M-1000
How should i go about it? I've thought of getting rid of the M- in front and putting it into another column, but it makes filtering nuisance.Also, is it true the a custom sort via an IComparer is only applicable to things without a binding source?
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Feb 21, 2012
I was assigned a task so as to bind the user related data into a grid view on user login. I have got two web pages, one of which contains Login and authentication information. This goes fine. When user was redirected to second page, I need to provide a GridView control where user details should be automatically updated in grid view control in the back ground.I have three different fields which were saved in sql table. particular user details need to be retrieved from the sql table on user login and bind the data to grid view automatically.
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May 7, 2010
I have a form called studentForm which has a studentCombobox, studentTextbox and a studentDatagridView
In the constructor of the studentForm I need to bind studentCombobox to the StudentbindingSource of the main form and to bind studentDataGridView to appropriate binding source in the mainForm.So that this datagrid view displays all the bookings for the studentID currently selected in studentComboBox
studentComboBox.DataSource = MainForm.StudentBindingSource
studentComboBox.DisplayMember = "StudentID"
studentDataGridView.DataSource = MainForm.StudentDataSet
studentDataGridView.DataMember = "Names "
This is the code I wrote in the constructor
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Feb 28, 2011
I am trying to bind my SQL param's qurey to bind to a table. My problem is i get this error "Fill: SelectCommand.Connection property has not been initialized."
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
If RadioButton3.Checked = True Then
Dim connectionGrid As SqlConnection = New SqlConnection("Data Source=BST;Initial Catalog=dsfs;uid=dfsdf; pwd='dsfsf'")
Dim commandgrid As SqlCommand = New SqlCommand()
[code]....
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Nov 3, 2011
I know that you can easily send a ping request and receive a boolean return type in .NET, using something like:
[Code]...
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May 3, 2012
Imports System.Data.SqlClient
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connetionString As String
Dim connection As SqlConnection
[code]....
How would I access a specific record and put it into a variable to compare against user input?I have a table CASHIERS and part of that table is a BadgeID and a PIN number. What I want to do is when a cashier swipes there badge to logon to a POS.. it searches the DB to see if the cashier exists. Then, once it establishes that they do exist, it pulls their PIN # and prompts them to enter it. It compares the data retrieved from the DB to the data that they entered.
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May 4, 2012
I want it to take the text from the text box and use that to search the badge column from the db and tell me if it exists or not.[code]...
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May 24, 2012
I'm trying to port an old VB.NET application to an Android application, but due to my lack of Java experience I am unable to find this one out. I have tried multiple solutions but to no avail.The idea is basically to do a POST request to 'url...' and getting the response cookies.[code]
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Dec 5, 2010
So, I am already able to successfully import an excel file to sql server through my vb application BUT I want to automatically change a value in a certain column to another. To expand on this, my excel file has a column that lists test titles such as "WCOB 1120 Access Test". I want to have each specific test title changed to a number. So, "WCOB 1120 Access Test" would need to be changed to '1' before it is added into my database.
Public Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim myPath As String = sFilePath & sFileName
Dim ExcelConnection As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source='" [code].....
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Jun 14, 2012
I am Working on Teghax Component.Using This Component we want to find out Block title attribute of dwg file in a client server socket application.
1> We get Block title attributes properly of dwg file in windows application form using the getattribute function().
2> We get Block title Attributes properly in that way:-We take a class library where we take a class.in this class we use getattribute function().Then We access the particular class from another project
But when we use the same class(Keep same structure) in client server socket program.Then it gives an exception.i.e ,"Spaicfied cast is not valid"I am Not getting any reply form teghax developer..I attached exception screen sort.Give me Suggestion How to solve this Exception
Code given Bellow :
Public Function Get_DwgFileAttribute(ByVal Sender As ClsTcpConnection, ByVal msgTag As Byte, ByVal message As String) As String
Dictionary = GetHashtable(message)
Dim varfilepath As String = CStr(Dictionary.Item("filePath"))
[code]....
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Aug 23, 2011
I am working on a project using VS2010 SQL2008 and I saw an ODD behaviour , First let me tell you that the app runs without any problem in my developing pc (Windows Xp sp3 32bit)But when I was trying the application in another pc (Windows 7 32bit)I got this exception: A network-related or instance-specific error occured while establishing a connection to SQL server.The server was not found or was not accessible.Verfiy that the instance name is correct and that SQl server is configured to allow remote connections.
Now what is weird in this exception; Is when the application reaches the DataAdpater.Fill(dataset) line I got this exception but when the app reaches the DataAdpter.Insert(....) It runs without any problem .
And what is more weird is that I noticed that the dataset that is used in the previous insert procedure can later be filled with dataAdapter.Fill(...) procedure which it was giving me an exception before .
I tried these things as a solution:
1)Checked SQlBrowser running..
2)No aliases to Sql server at all to remove...
3)remote area connection--OK
4)TCP and UDP port 1433,1434 exception in firewall
5)Unistalled my only antivirus Norton
6)Added Tcp/IP ports in Sql protocols
7)My connection String is : onnectionString="Data Source=ALISQLEXPRESS;Initial Catalog=PALMSDATABASE;Integrated Security=True"
8)Also tried using Sql Server authentication (user Id and password)
what is the difference between fill and insert? My app. runs smoothly on the original pc ,What should I do?
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Jan 19, 2011
I HOST MY ASP.NET WEBSITE ON WEBSERVER ..But after upload when i try to access my site ...
[URL]
Then following error occurs ....
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: SQL Network
Interfaces, error: 26 - Error Locating
Server/Instance Specified)
i have changed my connectionstring in web.config file and all webpages to :
<connectionStrings>
<remove name="ConnectionString"/>
<add name="ConnectionString" connectionString="Data Source=69.16.253.19,1433; Network Library=DBMSSOCN; Initial Catalog=database;
[code]....
...before publishing and uploading my website to webserver ...I m confused the problem is from my local computer or the webserver ....and how to fix this error ?
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Jun 1, 2010
i downloaded samples of vb 2010, i tried to run Create DB (Data Samples) but i'm receiving this error. I have MS SQL Server 2008 installed.a network-related or instance-specific error occurred while establishing to sql server. the server was not found or was not accessible.Verify that the instances name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error:40 - Could not open a connection to SQL Server)
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Nov 18, 2009
Error message receiving 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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) The project is written in VB.Net 2008. Production server uses SQL 2008, Dev Server uses SQL 2000. The application has been built and published.
Prod Connection String: strCN = "server=SGMAGNCPQ03.;Initial Catalog=APO_Tax;Integrated Security=True"
Dev Connection String: strCN = "server=S04423711940995.;Initial Catalog=APO_Tax;Integrated Security=True"
The Problem: When I change the connect string from dev back to prod and try to run my app, I get the above error message. If I reboot everything works fine but if I switch the connect string from prod to dev and try to go back to prod, I'm back to the same problem.
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Nov 4, 2011
I found similar forum thread [URL], but he don't have answers. How I can conncect | send | recive data using tcp connection with specific internet service (not web).
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Sep 2, 2010
I'm currently developing an application with a reasonably complex DataGridView that allows the user to build the lines of a sales document: Quantitiy, Description, Price, etc with some additional fields to help calculate price based on cost or discount i'm sure you get the jist - all this means we're not just diplaying data but adding and manipulating it - It also means there's mainly decimal fields, nit just simple text fields
Now, i'm new to VB.net, so i've perhaps done things a bit backwards during my learning curve, namely designing and coding my DGV before creating the underlying database table and binding to it - so as i'm sure you can image there's a bit recoding to do to allow for the fact that it's now bound to a datasource.
I'd got the DGV working just how a wanted it to, but now that i've bound it to a datasource i'm hiting multiple problems with: Formating the appearance of figures in the DGV Problems with blank fields while enering data (before the i try to save the data back to the database) How the DGV is functioning - it seems to behave differently when adding lines to a new sales document than it does when adding lines to an existing sales document
And given that when saving edits to an existing line i need to provide a valid update command i'm begining to think that it might be easier to scrap the databinding altogether and just Select, Add and Edit the database with code rather than binding the DGV in the IDE
I've read various threads about avoiding databinding due to it's limitations, but i've also read that it's far better in later versions of Visual Studio and .net. and i'm using VS2010
I'd just like some advise as to whether my gut feeling is right or whether i should persevere with databinding the DGV. i've noticed some quirks of databinding while working with other controls such as text and combo boxes, but i've overcome these and the result seems to be easier than coding the data transfer manually.
But i'm really struggling with databinding the DGV and the fact that i'm dtatbinding to a seperate table to the rest of the controls is leaning me away from databinding
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Mar 6, 2012
When I deployed my project on a server, in certain circumstances, I get an error page that indicates I should create a custom error page. I was wondering how exactly I would implement this custom error page the server asks for to give me a precise and helpful message or preferably, how I would get the error to just display on the main page?This is the error message I got below
Runtime Error
Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.
Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".
<!-- Web.Config Configuration File -->
<configuration>
<system.web>
[code]....
Notes: The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the application's <customErrors> configuration tag to point to a custom error page URL.
<!-- Web.Config Configuration File -->
<configuration>
<system.web>
[code]....
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Jul 24, 2011
I wonder if it is possible to find a specific row and specific columns in data base file (Access) . You see , I am using a DataGridView control to show only SOME of the columns (fields) of a table from an Access file . For example , lets say that in the DataGridView control I only show the following fields :Field1 , Field2 and Field3 .Now , when the user selects an entry in the DataGridView control , I want to insert the text from Field4 into a text box on the form .
The problem , however , is that I don't know how to get the specific row in the data base file and also I don't know how to get the text in column (field) Field4 of that row .One thing that might be important is that the index of the row in the data base file is not necessarily the same with the index of the current row in the DataGridView control . This is because in the DataGridView control the rows are order by the contents in the ID Field .ol .
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Dec 13, 2010
i am a beginner in vb8 i have a text file named alarm.txt,sample alarm.txt file is shown below
can someone help me to read the alarm.txt file and extract data.for eg
[Code]...
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Jun 14, 2009
I have search system that works like charm: 1> Searches specific folder for text files which contain specific word 2> Puts those text file names and/or paths to listbox However i want it to put (instead of InputStr) the specific line where word is found in text file to listbox.
[Code]...
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Oct 27, 2009
The below picture is generated by the following code:
Public Class Form1
Private Sub Form1_Paint(ByVal sender As Object , ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me .Paint
[Code]....
What I want to do is when I click on each grid on the form (Touch Screen), a tooltip of some stored information about the grid appears on screen. For example, if I click my mouse on square 6,8 then some stored information such as grid number, grid name, level...etc appears on the tooltip on the screen.
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Aug 25, 2011
I have a need to figure out which adapter is used when a connection is created. In other words, if I have multiple NIC cards (i.e. wireless, lan, etc) on my machine, which card is being used for the connection?
If anyone can point me in the right direction...
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May 29, 2010
To get an id value after a table insert into an Access database you do a SELECT @@IDENTITY. I would like to know if this will work if your INSERT query is a table adapter query? I created an INSERT query for a table in the dataset designer which is working. My concern is that if I make another query with SELECT @@IDENTITY it won't work because table adapters make a new connection each time. Can someone clear me up on this?
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