I was trying to edit and update an existing record in my database. I am getting an error, my code is here:
Editing Records
Private Sub btnEdit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEdit.Click
Dim qry As String
[code]....
I can retrieve records from my Database fine, but I'm having trouble updating records. I am getting a syntax error on [code] I get this error when I change the Last Name (Row 0, Column 1). [code]
View 4 RepliesMy form just isn't updating the row in the database: Here's my code:
Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
If Request.QueryString("a") = "edit" Then
Dim CategoryText As String = lstCategory.SelectedItem.Text
Dim conn As New SqlConnection("Data Source=.SQLEXPRESS; Initial Catalog=LogansArchive; Integrated Security=True;")
[Code] .....
I've never used nested SELECTs in SQL before so I'm not sure if I did it right. Aside from that, this is all stuff I've done before so I'm relatively sure that it's all correct. Finally, there are no errors being reported when I debug, although the updates don't seem to be coming through from the text fields (txtContent.Text isn't changing to reflect the new value).
As part of the application I'm writing in Visual Basic, I have written code to display records in text boxes and cycle through each of them one record at a time. I'm having trouble getting the code I've written to update records to work however. I am new to this however, so I'm sure I've made an obviously glaring error that you more experienced people can point out for me:
Public Class frmRecords
' VARIABLES TO AID NAVIGATION THROUGH RECORDS
Dim moverow As Integer
[code]....
Erm I am still a freshman who still learning Visual Basic and I'm currently facing a problem regarding adding a new record and updating my database records in the form, or the whole project.
If MessageBox.Show("Do you want to save the data?", "", MessageBoxButtons.YesNo) = DialogResult.Yes Then
Me.ArtistsBindingSource.AddNew()
[code].....
i have made a database windows forms application, i can add records, when i add a record , fill out a few fields then save it saves OK but if i then change some fields data then try to re-save i get a error: object reference not set to an instance of an object.
the code that is highlighted is:
Private Function GetRowData(ByVal custRow As calllogDataSet.CALLLOGRow,
ByVal RowVersion As Data.DataRowVersion) As String
Dim rowData As String = ""
[Code]....
All i'm tring to do is connect to my MysQL database on my Local host and update a record in my "customers" Table. The Error i've been getting is under Public Sub DeactivateAccount,the MyCommand.ExecuteNonQuery() line of the code. The error is saying there is "no database selected". Below is the code i have.
Imports MySql.Data.MySqlClient
Public Class FinalFailedPinNumberAttempt
Dim connectionstring As String = "Server=localhost;user id=root;Password=;
[Code].....
I want to use a progressbar to show that I'm retrieving the records from the database so that the user wont be confuse if the program is still running or not. Here's my code.
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
cs = "Initial Catalog = KRADB; Data Source = .; User id = lab; Password = 'clrscr2010'"
sqlcon = New SqlConnection(cs)
sqlcon.Open()
[code]....
how to seek a record in access (.accdb) file and update.
i have posted a question in below thread how to work with (i mean connect to a access database)....
[URL]
I could able to navigate through records but, i want to seek a particular record and update accordingly.....
when i used find method i am getting an error as below
"Table doesn't have a primary key."
But my database has a primary key.
I have a form in which I am updating records to table Users in database China.accb. The btnClick sub successfully updates the Dataset. However, the actual table Users never gets the update. What am I doing wrong? The code is below.
[Code]...
I'm writing a time entry program to record when an employee checks in and when they check out.I'm struggling on the part where I need to calculate a time span (time out / time in). I am selecting the In Time, Out Time, and Total columns.I want it to take the Out Time subtract it from the In Time and place that value in the Total column.I have so far and have tried several variations of different updates but have had no luck.[code]I keep getting a syntax error in the UPDATE statment.I'm not very fluent with OleDB yet and I'm not sure if I'm doing the update correctly.I have no problem with OleDB and single UPDATES or single field updates but when I am updating multiple rows with different values.
View 16 RepliesI am having problems editting my record where i basically want to select a record from the datagrid view and change any details where the data is displayed in the text boxes i have put on my form and click edit and have the data updated on to the database as well as the dataset. As for my updating button the code seems ok but i check my database and it doesnt change. Here is my code where the edit and update button code are at the bottom:
Imports System.Data.OleDb
Public Class Stock_Control
Dim dbConnection As OleDbConnection
[CODE].....................
What im trying to accomplish is to try to edit a gridview by using the updating event but not sure how to do this. The way im populating the datagrid is putting it into a dataSet and using that as the dataSource and doing a databind. Here is my datagrid below.
[Code]...
I have a file with information about people, and use the following code to show the contents ofthe file in a list box..
[Code]...
Using vs2008 9.0.30729.1 SP. Inserting a new record works but editing a record doesn't. Tried databindingsource but no joy as well.
Private Sub Gr1A_CheckedChanged_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Gr1D.CheckedChanged, Gr1C.CheckedChanged, Gr1B.CheckedChanged, Gr1A.CheckedChanged
sAns1 = ""
If Gr1A.Checked = True Then
sAns1 = "A"
ElseIf Gr1B.Checked = True Then
[Code] ......
I have a DataGridView binded to a DataAdapter to manage the details of an invoice(products). The Table fields are:
ID_Invoice int (PK)
ID_Product int (PK)
Quantity numeric(18,2)
[code].....
I am making a project for data entry on VB 2010. Database used is MS ACCESS 2007. In that there are buttons for next, previous, move first, move last, edit,add,delete,save,cancel.The problem is that when i run the code, and delete a record, the record gets deleted and next time i run, that record is not present but when i add a record or edit a record, at that moment it shows the updated record bus as soon as i close the code and run it again, the record is not updated.
View 7 RepliesIn our project, we have 2 client PCs having their own local databases and 1 server PC who also have its own local database(.mdf). These three are connected through a local area network so I would like to perform updates to the client PC database from the server PC. There should be two types of update, one is that the server will send its entire database to the clients and overwrite the client's databases and the other is to append the changes made in the server database to the client database. I only want to use vb 2010 so I used the SQL connection class.
View 15 RepliesI got an Syntaxerror in my INSERT INTO but i cant figure out why.
[Code]...
I have an existing database that Im using. I managed to update the database to whatever changes I do to the items in the datagridview using the code
Me.TblEmployTableAdapter.Update(Me.PoolsDataSet.tblPools)
Me.TableAdapterManager.UpdateAll(Me.PoolsDataSet)
Me.StockDataSet.AcceptChanges()
Me.TblEmployBindingSource.EndEdit()
But the thing is, whenever i write something in my code e.g "retyping the Me.close". It goes back to whats in the original items in my database.
I have part of an application that reads from a database makes changes to the data then saves the changes to the database.
[Code]...
I used in Visual Basic 6 to update my MS Access Table to get UPDATED Balance Column. Now my problem is the same code I want to use in Visual Basic 2010 to update SQLserver Table.[code]I have Dataset, Bindingsource and TableAdaptor in Windows Form so with that how can I update my Balance Column. The Table contained 3 columns i. Debit ii. Credit iii. Balance.
View 3 RepliesI'm loading a table from my database into a datagridview. Removing (multiple) rows from the database and the datagridview works great. Now I need to be able to add records directly into the database as soon as I add a new value into the datagrid.
- the id is the same ID as in the database
- the id-column is read-only
- the "datum"-column is where I want to add a new date (as soon as I leave the column it should add it into the database and the id should be added, without reloading the database) Adding the id (without reloading the database) is actually the most important part, but I don't have a clue how to achieve this.
I am trying to update the password field in a table called tb_Users for a given username. The following code works fine when I use literal values for the new password and for the Username.
[Code]...
How do I substitute the characters 'whogoesthere' for the contents of a TextBox called TextBox1 and the characters 'Joe Blogs' with the contents of a public varialble called PubUsers ?
I am displaying Access database records on my form and need to be able to printpreview only the first 3 records of the database and have no idea how to code this at all. Also the printpreview is has to be on a separate form than the displayed records.
View 1 RepliesI'm using Access 2010 for 2 small databases for a windows forms desktop application.on Form 1, my datagridview updates Paccounts.mdb correctly as follows:
end_OK:
Try
Me
.PaccountsTableAdapter.Update(PaccountsDataSet.Paccounts)
[code]....
I have records in my datagridview (from database(ms sql server 2008 r2)). What i want to do is to insert the records selected by my datagridview checkboxcolumn and IF POSSIBLE automatically delete a record if the records to be inserted are equal to the records inside the database. (Hoping you got what I want to say.) For example. I have an A,B,C(child) that is under XXX(parent) in my database and I'll be inserting the A,B(child) again but it will be under YYY(parent). The old record in XXX will be deleted except C. I just want a possible DELETE STATEMENT These are what I've done so Far :
Insertion of record to database
Try
connectionString = "Data Source=***;"
sql_connection = New SqlConnection(connectionString)
[code].....
I am programmatically updating some columns in a datagridview. When the user has also updated some columns then my program generated changes are also saved to the database (MSAccess). If the user does not update a dgv column, my program edits are not saved. I have read in another posting somewhere that I should be updating the bindingsource rather than the dgv cells. I have some code that was attempting to do this but it doesn�t work.
Dim dvr As Data.DataRowView
With TblClassMembersDataGridView
.EndEdit()
.CommitEdit(DataGridViewDataErrorContexts.Commit)
[code]....
PS. Is the bindingsource in a on-to-one relationship with the table returned by the Fill method? If not, I can see one obvious error.
I am trying to search through records of my database in a VB form and I don't have any errors or warnings but it doesn't work.
Here is the code and a screenshot:
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
Dim search As String
search = boxSearch.Text = txtSearch.Text & "'"
Dim foundRows() As DataRow
foundRows = taxDS.Tables("Orders").Select(search, boxSearch.Text)
End Sub
txtSearch.DataBindings.Add("text", taxBS, boxSearch.Text)
boxSearch.DataBindings.Add("text", taxBS, boxSearch.Text)
I'm adding records to my table which works fine. However, when I want to add a lot of records it takes some time and it looks like nothing is happening. I want to add a progressbar to show the progress.
For Each dgvrow As DataGridViewRow In mydgv.Rows
progress.Maximum = mydgv.Rows.Count
Dim cmd_save As New MySqlCommand("INSERT INTO ....etc", conn)
[code].....