how to update the data of an SQL server 2008 express using vb.net 2008? My raw data actually from excel file only and i want to transfer all the data and merge it in my newly installed SQL server 2008.Normally im updating it daily that is why i want to create code.
View 6 RepliesI'm trying to update a data user using vb.net2008 and sql server management studio express for my backend. the error says "must declare the scalar variable "@username"
Here's the code .
Private Sub btnupdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)Handles btnupdate.Click
Dim connstring = New SqlClient.SqlConnection("Data Source=MISD-
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I have a working game server browser project in VB.NET 2008 and I'm trying to fix the CS 1.6 and CS-Source query protocols. Where can I go to learn how to query a game server? The code worked in 2004 and now I want to update it [Code]
View 2 RepliesI have a class which I'm binding to a series of textboxes, date pickers and so on. When I change text in the text boxes, the object updates just fine, and when I then save the data, it has the changes. My problem seems to be with the RTB ... if I bind to the .Text property, it works just fine and updates like any normal text box. However... when I bind to the RTF property... changes to the object don't happen unless I first click out of the RTB... quite annoying. If I edit the text or change the formatting, and hit the save button, the changes don't get reflected in my object. I've even tried using debug statements to track when the property is changed, and I'm not getting the results I desire.
View 7 RepliesI am working on a project that stores data on animals. I am trying to make updates to data already stored there, through inputs on a VB form. A form where all the data is populating the fields shows up and the user can change/update any field. Once they are finished, they click update and the DB is supposed to reflect those changes (Theoretically)However, I wrote the code to do that, but when it runs nothing in the database is changed and nothing gets done, as it seems. No errors appear and nothing goes wrong with the program. It just doesnt change the data in the db.
View 1 RepliesI am working on a project that stores data on animals. I am trying to make updates to data already stored there, through inputs on a VB form. A form where all the data is populating the fields shows up and the user can change/update any field. Once they are finished, they click update and the DB is supposed to reflect those changes (Theoretically)
However, I wrote the code to do that, but when it runs nothing in the database is changed and nothing gets done, as it seems. No errors appear and nothing goes wrong with the program. It just doesnt change the data in the db.
Here is the code updating the database.
If txtNewID.Text = "" Or cmbRegion.Text = "" Or txtWombatName.Text = "" Or cmbGender.Text = "" Or txtAge.Text = "" Or txtWeight.Text = "" Or txtLength.Text = "" Or txtCommunity.Text = "" Or txtDescription.Text = "" Then
MsgBox("Please fill in all required fields.", , "ERROR")
Else
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I have two forms in my program, Form1 has ListBox which contains names from the Database.Form2, has textbox and add button to get a new name from the user.but when I click on add button.. i return to Form1 to view the names in the listbox by clicking on view button: ALL NAMES ARE DISPLAYED WITHOUT THE NEW NAME.when I close my program and click on View button all names including the new name that was entered before are displayed ! is there a way to display everything in the database without closing the program??I need a way to refresh or something.
Form1:
Imports System.Data.OleDb
Public Class Form1
Dim ds As New DataSet()
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I have a little big problem in one application.
I have a datagridview with data from a datatable, this datatable have these fields (id,num1,num2, date,user,ref,qt,cost,center), some of them are hided in the dgv (id,num1,num2,date,user). The user can edit,delete and add new rows to the dgv.
I have a save button that performs this actions:
First check if there are new rows, and if yes it fill the hidden fields. Then validate the inserted values by the user with a couple of ifs. In the end, i call the bindingsource EndEdit, and call the adapter Update command against the datatable...
This sometimes works others not really, i don't understand why.
The error it's: "Concurrency violation: the DeleteCommand affected 0 of the expected 1 records"
I think sometimes when Updating it occurs to.
I have a program that uses a database for all of its information. The program is just an easier way to understand all of the information.The user uses 1 of 4 search options (FName, LName, MemberID or Startdate). Depending on what they search for depends on which members are displayed in a data grid view.
Upon selecting the desiered member from the data grid view, information about them is then displayed. This information has been split up over 3 tabs called member information, Attendence and payment history.
That all works great. So I now go to the Attendence Tab and wish to update this members attendence by selecting a date from the date time picker, and select the Add attendence button.This also works fine, the attendence is update but the attendence data grid view is not updated automatically.
I have to select the member from the first data grid view to run the code to refresh the members information.So I thought, call the PopulateAttendenceHistory Private sub again and have it update the data grid view... but it still doesnt work.
I am trying to enable a timer on multiple MdiChildren and I'm getting an error. What am I doing wrong.
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I have noob question. I made a dataset of a sql express 2005 database using the designer. So it's a typed dataset. Then I declare some tableadapters and fill them.Now I do this to add a record to my dataset:
Private Function SaveOrder(ByVal controlenummer As Integer, ByVal PK_BaanID As Integer, ByVal starttime As DateTime, ByVal stoptime As DateTime) As Integer
Dim orderRow = dsIntveen.tblOrder.NewtblOrderRow
orderRow.Controlenummer = controlenummer
orderRow.FK_Baan = PK_BaanID
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there is a tab control system. It relies on only five text boxes, and their bindings change when the tab is changed The relevant information is displayed. However, if I navigate to a different record...You can see that the same information is displayed in the tab control text boxes, and not the employee's details I just selected in the data grid or the navigation. How can I fix this? I'm not sure what's gone wrong here. Here's the code that changes the text boxes upon changing tab...
Private Sub TabCheck()
If TabState = 1 Then
pnlTabs.BackgroundImage = My.Resources.tabs1
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None of the Microsoft videos I have watched, or the other posts I have seen, have given me the pieces I need to understand this process. This is the one key piece of understanding that I need to finish about 4 different programs I have started in the last 2 years. All of them key on understanding the following processes:
View 1 RepliesI am sorry to keep bothering you about this damn DataGridView control ... As you might have noticed I am having a hard time with the DataGridView control ... My latest problem has to do with updating the data base file (Access) through a DataGridView control .
Up to now I have managed to successfully edit an entry in the DataGridView control and moreover to successfully update the data base file itself .
The above form and its code work fine . The problem starts when I am trying to run the code of the Update button from another form .
You see , I have another form , through which I change the contents of some of the cells in the DataGridView control (back in Form1) . What I want next is to simply update the data base file itself , just like I was doing with the button in the first form , after I manually changed the cell in the DataGridView control .Thus , on the second form I have a button with this code :
Form1.Button1_Click(Nothing, Nothing) (of course the Click event is declared public)I have also tried :
Form1.Button1.PerformClick()
but still nothing ...Although Form2 successfully changes the cells back in Form1 , the data base file itself does not get updated ...If I manually press the Update button in Form1 I once again successfully update the data base file , but I want to do the whole thing by calling the Update button from Form2 .
I have recently built an N-Tier app using VB.Net 2008. The application is based on Beth Massi's tutorial at [URL] I am trying to incorporate a datagrridview control on a Parent form - one parent (father and mother) to many children. For example,
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Only my local dataset updates when adding, deleting or editing records.The Source Database is supposed to update on issuing DataAdapter. Update(dataset )However, when I check my source database after running the operations it remains the same as the original.
View 6 Repliesi am trying to save data from vb.net form in sql server 2008 below is the code which i am using but the only problem is . i am not getting any error instead the data which is being saved in sql server in my First Name , Last Name and Address fields is not the one i insert into textboxes, when i check the backend it shows me my field values as first name , last name and address.
Dim FirstName As String
Dim LastName As String
Dim Address As String
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I have the following code which I mashed up from several sources:[code]This works great until I add another POST parameters to query, like "client=mgdf&version=100".No errors are thrown, the program doesn't crash, nothing. It simply stops working. How can I POST multiple values to my server?
View 1 RepliesHaving problem in updating an existing record. An error occurs "Data Type Mismatch in Criteria Expression"
Private Sub ToolStripButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton1.Click
Dim myBuilder As OleDb.OleDbCommandBuilder = New OleDb.OleDbCommandBuilder(dataAdapter)
[code].....
I have spent several hours trying to delete a row and insert a row into an Access database using the OLEDBDataadapter and dataSets without any success. I don't get any errors it just doesn't update the datatable. Here is the last version of the code I have been trying to get to work. I have done a lot of searching and have
Data save
Private Sub SaveNumDte(ByVal ltoNum As String, ByVal ltoDate As Date)
Dim numTotal, x, MaxRows As Integer
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i want to take back up of our data base data i request to you for give best solution for it .. code .. and it will also run whenever some one accessing our vb.net project?
View 1 RepliesI've been trying to write code to import Excel files into a SQL Table using the following code (url...) with little success.
This is a VB.Net app using Visual Studios 2008 with SQL Server 2008 on a Vista Ultimate 64 machine.
The runtime error encountered is: "COMException was unhandled...Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done."[code]...
I have the following code for SQL insertion, but how can I prevent data dublication in vb.net so that the same data is not entered twice? I mean can I add a exception in my code to check if one of the field in the sql server table contains the same data? [code]
View 14 RepliesI am using visual basic 2008 and sql server 2008. I am trying to retrieve data from a table in sql server 2008. I am using the following code
Dim cn As ADODB.Connection
cn = New ADODB.Connection()
Dim rs As ADODB.Recordset
rs = New ADODB.Recordset
Dim cnstr As String
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I'm trying to update a data user using vb.net2008 and sql server management studio express for my backend. the error says "must declare the scalar variable "@username" here's the code .[code]...
View 14 RepliesI want to transfer Excel sheets data to SQL Server database.
View 4 Repliesi wanted to develop an apps that sends sends data from client to server and vice versa. i want to biuld it with
View 5 RepliesI need to solve the following problem:- Create a server application which generates a random number every second- Have any number of client applications access the current random number through a dll (associated to the server) at anytime How would I do this? Anyone has a prototype VB.Net code for the server which does this kind of thing? I'm pretty sure I know how to write the client code.
View 5 RepliesMy problem is that I would like to know that if some data from client has arrived to the server, I would know its length.Now I m getting an error at: mClient.GetStream.EndRead(ar). It is saying that ar cannot be empty. [code]
View 3 Repliesi have three textbox in my program
How do i update my textbox3 Data like this
textbox3 line1 = textbox1 line1 + textbox2 line1
textbox3 line2 = textbox1 line2 + textbox2 line2
textbox3 line3 = textbox1 line3 + textbox2 line3
textbox3 line4 = textbox1 line4 + textbox2 line4
textbox3 line5 = textbox1 line5 + textbox2 line5