i connect the Datagridview by using command connection not coding. now i have "table3tableadabter", "table3bindingsource" and "database3dataset" below the form ? the search string " "Select * from tabel3 Where test2 like '" & Me.TextBox1.Text & "%';"" how i can do serch and the result will be shown in datagridview.
View 4 RepliesI watched a video from Beth Messi about creating a search function using query builder.
For instance, if I want to filter FirstName, I will do " LIKE @FirstName + '%' " - the FirstName's datatype is varchar My question is, what should I write for the "int" datatype?
I'm a bit puzzled here. I did a form containing a simple datagridview containing data from an MDB file. The connection was alltogether done by Visual Studios wizard so alot of stuff was created automatically. Then I databinded the textboxes to each column in the database and managed to update the database via my own command buttons such as "Update" with this code:
Me.MainTableBindingSource.EndEdit()
e.MainTableTableAdapter.Update(Me.DBDataSet.MainTable)
Me.DBDataSet.MainTable.AcceptChanges()
[code]....
if i want to search for any thing in the database for example i write in the textbox the key ward how i want to search it then the result show in the table 'DataGridView'
View 3 RepliesI tried out the video tutorial from Beth Messi about how to create a search. The tutorial teaches us how to do it through query builder in which we just have to type LIKE@fieldname = '%' for each field we wish to appear on a toolstrip. A toolstrip menu will automatically be generated and placed underneath the form bar for us after we click ok.
Now, I would like to know how can I do this with code? I can use a code which will move the auto generated toolstrip into the tabcontrol but when I have more than 1 tabcontrol, that's when I start having problems - the toolstrips are starting to cover up the tabcontrol. I know I can move the datagridview lower but that is going to leave a big space above it.
I have a VB.NET search routine, part of which is provided, below, that checks all Text cells in a DataGridView for a given string (inclusive), using a basic set of nested loops to perform the search:
' Search for the first occurrence of the given string
For Each row As DataGridViewRow In dgvMembers.Rows
' Skip the new row
[Code].....
is there a way to replicate this behavior using LINQ? Basically I would like the query to select (or return) the first DataGridViewCell whose text contains the search string. I've done some tinkering with sub-queries and the like, but I'm still having trouble wrapping my brain around the concepts (too many years of writing T-SQL, I guess).
I am making a project in VB 2008 that has a Form (form1) that allows me to add new records to a database, and another Form (form2) that allows me to search for records in a database. I have done Form1 already, but my problem arrives in Form2 where I have to query the database. This form consists of 1 textbox (txt_search.text), 1 button (btn_search) and 1 datagridview (datagridview1). The name of my database is db_extras_test2003.mdb and the table I want to search records from is tbl_contacts.
I know +/- the SQL sintax to query the database (SELECT * FROM tablename WHERE columnname = (here i dont know if i put the variable name i have set for the txtbox, or the textbox itself)).I want this in a way that I (or other users) type in the textbox, hit the Search button and the results are shown in the datagridview (i can show the results in another way if it is better to do so).I have done the connection to the database already. The code I have so far is the following, but it doesnt work
[Code]...
I want to make a search form the user completes the 3 textboxes and 2 datetimepickers. (so five components).
Also I have a button called search and a datagridview.
When the user presses the search button it searches into those 2 tables (depending on what user typed in the 3 textboxes and selected on 2 datetimepickers).
Example of search:
The user searches like this:
When it presses the search button the results will be stored in datagridview(first textbox is the field DB-20-RTS from table PatrimoniuMasini and the rest are fields from the specified columns (name of labels) from the second table FoaieParcursMasina -is the second row from this second table).
Here's the code in my search button (don't know how I can store the 5 things(2 datetimepickers and 3 textboxes in the DataGridView) . My problem is in understanding the property item of DataGridView(DataGridView1):
DataGridView1.Item(row_index,column_index) -general syntax
Here's the full code of button search:
Dim conexiune As SqlConnection 'conexiune cu sql server
Dim comandasql As SqlCommand 'cerere -interogare sql
Dim msg As String ' msg- variabila dk suntem conectati sau nu
[Code]....
We have a VB.Net application which works fine in our tests in different Windows XP SP3 machines. However there is one machine in which is displaying this error:
Unable to connect to any of the specified MySQL hosts
Using the mysql command, we can successfully connect to the database. We already checked for any other application or firewall that could be blocking the connection but it seems fine. We also reinstalled the system (no errors during the installation) but the MySQL error message doesn't change.
The system settings are exactly the same as in the other computers. We are using "localhost" as server in the connection string. The "hosts" file has its default values (nothing strange in there).
Any ideas on how I handle the following error thrown in the SqlDataAdapter.Fill as a result of the BeginTrans in the callee?
System.InvalidOperationException = {"ExecuteReader requires the command to have a transaction when the connection assigned to the command is in a pending local transaction.The Transaction property of the command has not been initialized."}
[code].....
Public Sub ExecuteTransaction(ByVal connectionString As String) Using connection As New OleDbConnection(connectionString)
Dim command
As New OleDbCommand()
Dim transaction
As OleDbTransaction
[Code]...
i make the vb homework first, connect the mdb file, then login. In the mdb file, there have login account and password.when i run the program, it have some problem:"dataAdapter.Fill(dt)" highlighted, The 'Microsoft.Jet.OLEDB.4.0xxxxxxx.mdb' provider is not registered on the local machine.
[Code]...
How do i connect MySQL to VB2010. eg Provider=???
View 2 RepliesI am trying to connect DSN from my VB 2008 project. When i try using myoledb.connectionstring="DSN=myDNSname" I get the following error message An OLEDB provider was not specified in the connectionstring.
View 1 Repliessearch button coding in vb.net
View 1 Replieshow to hard code my database connect to my application . Example, i want to connect to my application using[code...]
View 3 Replieshow to search multiple fields in sql??im using 2 dropdown box for searching
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View 9 RepliesI have a problem. When I play a wav file using winmm, as soon as I click on a different command button on the form, the audio playback stops. How do I make sure the wav files are allowed to play in their entirety even when focus is moved to another control?
View 13 RepliesIs there a way in VB to make something that will simulate an advanced command prompt inside of a Windows Form? For example, something like a greenscreen app?
View 1 RepliesI'm a beginner to VB2010. If I draw a red line on a BLANK form, obviously its red. But if I draw a second red line, which crosses the first, is there a way of controlling the colour at the crossover position, for example returning it to the original colour of the form?
View 4 RepliesI am using vb2010 and the like @lastname +'%' to try and create a search query. It seems to work until I try the test query which brings up nothing within the test query window. Sometimes it even seems to wipe out the data I have put in for testing. I did get it to work once in one project.
View 3 RepliesI have o problem on my codes sqldr = sqlcmd.ExecuteReader when i debug the program error says ExecuteReader requires an open and available Connection. The connection's current state is closed. i dont know what its means that error..
View 1 RepliesI'm working on a program that does a bit of color-coding in a datagridview. My problem is that when a row is selected, the color-coding goes away since the normal behavior for the datagridview is to change the back-color to blue and fore-color to white. What I want it to do though is keep the fore-color that is being set through my code. I guess what I'm trying to find out is if there is an event that happens when a row is selected that I can modify to run my own color-coding. I posted a link below to an image of my program that what I'm talking about. My color-coding code is below that (if anyone would want to know what that looks like). gets solved I'll be sure to post the code solution!
http://img204.imageshack.us/img204/8791/astleymainview.jpg
For i As Integer = 0 To Me.dgvOne.Rows.Count - 1
If Me.dgvOne.Rows(i).Cells("SCHFINISH").Value < CDate(Now) Then
[code]....
How to connect using MySQL connection?
View 1 RepliesI am trying to open a socket server, I have the code below but my problem is that when I try to connect as a client to the server using the command line (telnet ip port), i only get to type 1 letter and that's it, i can't do anything else, how can I make it so that the client can send anything until they hit or type EXIT?
Here is my code:
Imports System.Net.Sockets
Imports System.Text
Imports System.Threading
[Code].....
I want connect my linux remote system using ip address and port through .net. and want run a command to run a file inside the remote system
View 5 RepliesI have an ADSL connection that requires username password login (PPPoE). This looks just like a phone dial up connection dialog box.But all the codes i've seen for automatically connecting to internet, or even detecting a connection do not work.I'm looking for a way to have my software check for an active connection to internet, and absent that, to connect via the default connection.I'm on XP. I don't know if that makes a difference.I have set properties to save the username password and not to prompt for them. So if I double-click the connection it will connect without any dialog box.
View 4 RepliesHow can i connect all the computers in a server using vb.net 2005 or latest version of vb.net.?
Scenario: 10 computers in a computer room. connecting it to a server.
This is the code I posted before. I have a thread open but it is confusing. I have a search of a datagridview. The search works. Now I would like to highlight the corresponding row of the search result. Scroll down to the highlighted row. If there are multiple results to the search critiria the next one should be highlighted.
Dim foundit As Integer = 0
Dim intResponse As DialogResult
With Me.DS.table
[CODE]...