I have a picturebox where I load a image at runtime using a OpenFileDialog, then I want to save the path/filename into a database. What I don't know is how to get the path/filename of the image?
I tried something like
VB Code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
openFD.ShowDialog()
If openFD.FileName > "" Then
PictureBox1.ImageLocation = openFD.FileName
PictureBox1.Imagelocation = label1.text
End If
End Sub
label1.text = PictureBox1.ImageLocation
or you can try to msgbox(PictureBox1.ImageLocation)
Related
I have issue with passing data in VB.NET and I'm new in vb.net + mysql. I don't know is it possible or not. I have some TextBoxes and I want fill those with userID or something. I want to make this like a modal on php.
When I clik TextBox, 1 form shows up with ComboBox and submit button to pass data to TextBox on previous Form. I've done it with 1 TextBox, but I can't pass it to other TextBox. Here is my code:
Form1.vb
Private Sub TextBox4_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox4.Click
'This is method **in my logic** can throw back data to TextBox4 from Form2.vb'
Form2.Label1.Text = TextBox4.Name
Form2.Show()
End Sub
Form2.vb
Private Sub AddTeam_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Call getUSers()
End Sub
Sub getUSers()
Call connection()
Dim str As String
str = "SELECT id FROM users WHERE status='Active'"
cmd = New MySqlCommand(str, conn)
rd = cmd.ExecuteReader
If rd.HasRows Then
Do While rd.Read
ComboBox1.Items.Add(rd("id"))
Loop
Else
End If
ComboBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend
ComboBox1.AutoCompleteSource = AutoCompleteSource.ListItems
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim nik = ComboBox1.SelectedItem
'Here is the issue, if i pass to 1 TextBox (like TextBox4 as sample) it`s easy, but if pass to another TextBox i have no idea to do that'
Form1.TextBox4.Text = nik
Me.Refresh()
Me.Close()
End Sub
note: I know there are many ways to do so, like change TextBox to ComboBox and fill with data, but I want this method
I'm sorry for my poor logic in vb.net. I was better with PHP before.
I am writing a program which lets users upload a large file, compare it to another large file uploaded before and return a list of new entries and discontinued entries.
This requires the program to run a few queries, so it takes a while for the program to complete the task.
Of course, this means that until the program is done with the task, the user cannot do anything else. To prevent that from happening I have included a BackgroundWorker to the project.
The problem is, the BackgroundWorker doesn't start, giving me the same problem.
Can you please help me with this problem? Thanks!
Code:
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim opendialog As New OpenFileDialog
Dim filepath As String = ""
Dim cellvalue(20) As String
opendialog.Title = "Elija el archivo que quiere importar"
opendialog.Filter = "CSV (*.csv)|*.csv"
If opendialog.ShowDialog() = DialogResult.Cancel Then
Exit Sub
End If
filepath = Replace(opendialog.FileName, "\", "\\")
Label1.Visible = True 'This is supposed to appear first, but it doesn't appear until the end of the method.
'Reading CSV file content
Cmd.CommandText = "SELECT COUNT(*) AS cuenta FROM libros WHERE 1"
rs = Cmd.Execute
If rs("cuenta").Value = 0 Then
BackgroundWorker1.RunWorkerAsync()
'MySQL queries, some of which takes a long time due to the large file being processed
Beep()
MsgBox("Archivo exportado con éxito",, "Exito")
BackgroundWorker1.CancelAsync()
Else
BackgroundWorker1.RunWorkerAsync()
'MySQL queries, some of which takes a long time due to the large file being processed
Beep()
MsgBox("Archivo exportado con éxito",, "Exito")
BackgroundWorker1.CancelAsync()
End If
End Sub
Private Sub BackgroundWoker1_ProgressChanged(ByVal sender As Object, ByVal e As System.ComponentModel.ProgressChangedEventArgs) Handles BackgroundWorker1.ProgressChanged
' Update the progress bar
Me.ProgressBar1.Value = e.ProgressPercentage
End Sub
Private Sub BackgroundWorker1_RunWorkerCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs) Handles BackgroundWorker1.RunWorkerCompleted
If e.Cancelled Then
Label1.Text = "Cancelled"
Else
Label2.Text = "Completed"
End If
End Sub
Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object,
ByVal e As System.ComponentModel.DoWorkEventArgs) _
Handles BackgroundWorker1.DoWork
' Do some time-consuming work on this thread.
System.Threading.Thread.Sleep(5)
End Sub
RunWorkerAsync is, as the name implies, an async method call. This means that the only work done here is to start the DoWork event handler and return immediately. Thus your code now has two paths of execution, the one in the DoWork event handler (that has just started its work and it has probably done nothing) and the code that follows the call to RunWorkerAsync (the code in the ButtonClick).
This last code shows a messagebox and then call CancelAsync, and you could imagine what this call do to your DoWork thread of execution.
So you just need to wait before displaying anything and the Completed event is exactly what you need to use to wait the completition of your DoWork event handler
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
.....
BackgroundWorker1.RunWorkerAsync()
' Remove these lines....
' Beep()
' MsgBox("Archivo exportado con éxito",, "Exito")
' BackgroundWorker1.CancelAsync()
End Sub
Private Sub BackgroundWorker1_RunWorkerCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs) Handles BackgroundWorker1.RunWorkerCompleted
If e.Cancelled Then
Label1.Text = "Cancelled"
Else
Label2.Text = "Completed"
' Add the message here....'
Beep()
MsgBox("Archivo exportado con éxito",, "Exito")
' Of course at this point you don't need to cancel anything....'
End If
End Sub
Private Sub BackgroundWoker1_ProgressChanged(ByVal sender As Object, ByVal e As System.ComponentModel.ProgressChangedEventArgs) Handles BackgroundWorker1.ProgressChanged
Me.ProgressBar1.Value = e.ProgressPercentage
End Sub
Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object,
ByVal e As System.ComponentModel.DoWorkEventArgs) _
Handles BackgroundWorker1.DoWork
' Now suppose that your work here could be divided in 5 methods'
ExecuteMethod1()
backgroundWorker1.ReportProgress(20)
ExecuteMethod2)
backgroundWorker1.ReportProgress(40
ExecuteMethod3
backgroundWorker1.ReportProgress(60)
ExecuteMethod4
backgroundWorker1.ReportProgress(80)
ExecuteMethod5
backgroundWorker1.ReportProgress(100)
End Sub
This is the first time I use background worker. I want to retrieve data around 20.000 rows, save it on dataadapter and showing in on a datagridview
it seems running but then message Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding comes up.
What I have done is put : Connect Timeout=90000 on the connection string and da.SelectCommand.CommandTimeout = 2000000, which doesn't seems to have a better end result by make adding few extra zeroes. :(
Here is what I have done. What should I do to make it works. thank you
Dim da As MySqlDataAdapter
Dim resultDataTable As DataTable
Dim queryString As String
Private Sub BTNrefresh_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BTNrefresh.Click
queryString =" LONG QUERY "
bw.RunWorkerAsync()
End Sub
Private Sub bw_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles bw.DoWork
MethodGlobal.mySqlCon.Open()
da = New MySqlDataAdapter(queryString, MethodGlobal.mySqlCon)
myDataTable = New DataTable
da.Fill(myDataTable)
da.SelectCommand.CommandTimeout = 2000000
Me.DGVtest.DataSource = resultDataTable
End Sub
Private Sub backgroundworker_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
MethodGlobal.NewMysqlConnection("connection")
End Sub
Please I really need help on this one... I have 2 Forms Form1 and Form2. In Form2 I Filter the DGV by Textboxchanged event
TBC Code
Dim dvSection As DataView
Dim tableAdapter As New testDataSetTableAdapters.testingTableAdapter
Dim ds As New testDataSet
dv.Table = TestDataSet.testing
dv.RowFilter = "CONVERT(TransactionID, System.String) LIKE '%" & TextBox1.Text & "%'"
TestingDataGridView.DataSource = dv
I return the filtered data by assigning the dv as the new DataSource for Form1 DGV.
This Code Works
Form1.TestingDataGridView1.DataSource = dv
Here in my question, in Form1 (with filtered data). I want to Edit the data in the DGV and then Update my MySql Table "testing". I am really confused about this cause I've never done this before. I usually Update my DGV and MySql Table by using the ff codes. How ever in this situation the ff codes doesn't work.
If MsgBox("Save Changes Made in this Cell?", MsgBoxStyle.YesNo, MsgBoxStyle.Exclamation) = DialogResult.Yes Then
Me.Validate()
Me.TestingBindingSource.EndEdit()
Me.TestingTableAdapter.Update(Me.TestDataSet.testing)
End If
I am really confused now, A little help would be really nice. Please and Thank You.
I'm finally able to update the data view now... Let me post my codes here for future reference just in case someone also needs help. this is a sample project so I didn't go much into the codes and went directly to how I solved it.
Form1 has Datagridview(databound), 1 button "Form2"
Codes for Form 1
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
`TODO: This line of code loads data into the TestDataSet.testing table. You can move, or remove it, as needed.`
Me.TestingTableAdapter.Fill(Me.TestDataSet.testing)
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Form2.Show()
' Me.Hide()'
Me.TestingBindingSource.DataSource = TestDataSet
Me.TestingTableAdapter.Dispose()
Me.TestingTableAdapter.Fill(Me.TestDataSet.testing)
End Sub
Private Sub TestingDataGridView1_CellEndEdit(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles TestingDataGridView1.CellEndEdit
If MsgBox("Save Changes Made in this Cell?", MsgBoxStyle.YesNo, MsgBoxStyle.Exclamation) = DialogResult.Yes Then
Me.Validate()
Form2.TestingBindingSource().EndEdit()
Me.TestingTableAdapter.Update(Me.TestDataSet.testing)
End If
End Sub
End Class
Form2 has DGV (databound), 2Buttons, "Return", "Save", and a textbox
Private Sub TestingBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TestingBindingNavigatorSaveItem.Click
Me.Validate()
Me.TestingBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.TestDataSet)
End Sub
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the TestDataSet.testing table. You can move, or remove it, as needed.'
Me.TestingTableAdapter.Fill(Me.TestDataSet.testing)
End Sub
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
Dim tableAdapter As New testDataSetTableAdapters.testingTableAdapter
Dim ds As New testDataSet
dv.Table = TestDataSet.testing
dv.RowFilter = "CONVERT(TransactionID, System.String) LIKE '%" & TextBox1.Text & "%'"
TestingDataGridView.DataSource = dv
Form1.TestingDataGridView1.DataSource = dv
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Form1.Show()
Me.Hide()
Me.TestingTableAdapter.Dispose()
Me.TestingTableAdapter.Fill(Me.TestDataSet.testing)
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
If MsgBox("Save Changes Made in this Cell?", MsgBoxStyle.YesNo, MsgBoxStyle.Exclamation) = DialogResult.Yes Then
Me.Validate()
Me.TestingBindingSource.EndEdit()
Me.TestingTableAdapter.Update(Me.TestDataSet.testing)
End If
End Sub
Using SevenZipSharp wrapper has anyone succeeded in aborting an in-progress compression? I used:
FileCompressionStarted(ByVal sender As Object, ByVal e As SevenZip.FileNameEventArgs)
to see some activity and tried:
e.cancel = true
but nothing happened. Compression continues working until all files are packed. Any ideas?
resolved and explained in other forum, please see link, thanks everyone
http://www.vbforums.com/showthread.php?697661-RESOLVED-SevenZipSharp-aborting-compression&p=4272389#post4272389
PS. Just to have solution here, in case anyone needs
e.cancel isn't treated well in library because (like I expected) when I set e.cancel = true once, the library may not catch this request. I'm not sure this is sevenzipsharp.dll problem or 7z.dll but in code posted, when many clicks hits to my Abort button, finally, library aborted compression !!!
So implementation needs to be:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
abort = True
console.addLine("Abort requested...")
End Sub
Private Sub fFileCompressionStarted(ByVal sender As Object, ByVal e As SevenZip.FileNameEventArgs)
Dim s As String = ""
If abort Then
e.Cancel = True
s = " aborted"
End If
console.addLine("[CompressionStarted event] e.Filename = " + e.FileName + ", e.PercentDone = " + e.PercentDone.ToString + s)
End Sub
Public Sub fCompressionFinished(ByVal sender As Object, ByVal e As System.EventArgs)
console.addLine("[CompressionFinished event]")
abort = False
End Sub
Best regards,
Edouard Gora, YO3HCV