How would I go about batching records in a select statement I Have to conserve bandwidth as delaying with shop tills so bandwidth is at a premium. I will be reading the batch size from configuration file and passing to this select statement:
Friend Function SelectAllPendingDeliveries() As String Implements iScriptBuilder.SelectAllPendingDeliveries
Dim retVal As String = ""
retVal = "Select * from batchtable where [location] is not null and isprocessed = 0"
Return retVal
End Function
How would I go about doing this is the table structure
#Anthoy I think this is where I am getting tripped up how Would i control it here to for it to loop until the end of the recordset so it executes in batches this is the function that calls the select statement
#Anthory I meen this code i pasted the wrong proc in
Friend Function CreateLiveSale(ByVal wrpPush As LiveSales.wrpPush, ByVal rCount As Int32, ByVal request As LiveSales.requestPush, ByVal orderLineData As DataTable, ByVal packetBatchSize As String) ', ByVal orderNumber As String, ByVal orderLineReference As String, ByVal uniqueFilename As String, ByVal tagBarCode As String, ByVal costPrice As String, ByVal deliveryQty As Int32, ByVal orderLineData As DataTable) As Boolean
Dim retVal As Boolean
Dim settings As LiveSalesBackOfficeClient.infoLiveSalesBackOfficeClient = _
(New LiveSalesBackOfficeClient.configurationLoader).LoadConfiguration
Dim cfb As New cfbConfiguration
Dim pushOrderIncQTY As New infoPushOrderIncQTY()
Dim totalRecords As Integer = orderLineData.Rows.Count
Dim pushOrderInc As List(Of infoPushOrderIncQTY) = New List(Of infoPushOrderIncQTY)() ' create a generic list
Dim recordCount As Integer = 0
Dim batchNumber As Integer
Dim batchNumberpad As String
Dim filenameSplit As String()
For Each thisentry In orderLineData.Rows
If recordCount = 0 Then
filenameSplit = thisentry.Item("unqiueFilename").ToString().Split("_")
batchNumber = recordCount + 1
batchNumberpad = Path.GetFileNameWithoutExtension(filenameSplit(2)) & "_" & batchNumber.ToString("D3") & ".csv"
With request
.companyID = settings.companyID
.machineID = settings.machineID
.uniqueBatchIdentifier = batchNumberpad
End With
End If
With pushOrderIncQTY
.costPrice = thisentry.Item("costPrice")
.externalTimeStamp = DateTime.Now()
.RootPLU = thisentry.Item("tagbarcode") 'set this to the barcode from the file
.sizeBit = -666
.supplierID = cfb.SupplierID
.orderReference = thisentry.Item("OrderNumber")
.orderLineReference = ""
.externalTransaction = ""
.sourceShop = cfb.SiteId 'set to the GEMINI location ID for this store (you will have to get this from your configuration file
.destinationShop = cfb.SiteId 'set this to the same as the sourceshop
.QTY = thisentry.Item("ActQty")
.whichQty = LiveSales.infoPushOrderIncQTY.Which_OrderQty.delivered 'only available option at present
End With
recordCount = recordCount + 1
pushOrderInc.Add(pushOrderIncQTY) ' add it to the list for batching
If recordCount = cfb.PacketBatchSize Then ' only when the record count = the packetsize fire off
pushOrderInc.Clear()
recordCount = 0
End If
If cfb.PacketBatchSize > 0 Then
CallWebSerivce(wrpPush, request, pushOrderInc.ToArray())
End If
Next
If cfb.PacketBatchSize = 0 Then ' if their is a batch size then lets just processe
'call the webservice
CallWebSerivce(wrpPush, request, pushOrderInc.ToArray())
End If
Return retVal
End Function
#anthoy the above gets called by this procedure so it does its hear the looping needs to happen
OpenConnection()
Dim results As DataTable = connection.SqlSelectToDataTable(scriptBuilder.SelectAllPendingDeliveries)
Dim dataForEmail As String = ""
Dim msg As String = ""
msg = "The Following Deliverys where processed for the Following Ordernumbers at " & DateTime.Now.ToString() & Chr(13)
dataForEmail = "Order Number" & vbTab & "BarCode" & vbTab & vbTab & vbTab & "Product Name" & vbTab & vbTab & vbTab & vbTab & vbTab & "Brand" & vbTab & vbTab & vbTab & "Size" & vbTab & vbTab & "Colour" & vbTab & "Qty" & vbTab & vbTab & "RRP" & vbTab & Chr(13)
Dim totalcost As Decimal
Dim cnt As Int16 = 0
Dim fileName As String = ""
If Not IsNothing(results) AndAlso Not IsNothing(results.Rows) _
AndAlso results.Rows.Count > 0 Then
Dim rrpprice As Double = 0.0
For Each thisRow As DataRow In results.Rows
If IsDBNull(thisRow.Item("RRPPrice")) Then
rrpprice = 0.0
Else
rrpprice = thisRow.Item("RRPPrice")
End If
fileName = thisRow.Item("unqiueFilename")
totalcost = totalcost + rrpprice * thisRow.Item("QTY")
dataForEmail = dataForEmail & BuildReportFoEmail(thisRow)
connection.ExecuteNonQuerySql(scriptBuilder.SetDeliveryStatus(2, 1, thisRow.Item("r3DeliveryId")))
cnt = cnt + 1
Next
connection.ExecuteNonQuerySql(scriptBuilder.SetDeliveryStatus(1, 0))
CreateLiveSalesDeliveryForR3(cnt, fileName, results, cfb.PacketBatchSize)
dataForEmail = dataForEmail & vbCrLf & "Total Price " & totalcost.ToString() & vbCrLf & BuildExceptionsForEmail(results) & vbCrLf
End If
SendEmailViaWebService(dataForEmail, cfb.EmailForDeliverys, cfb.FullNameForEmailSubject, msg)
MsgBox("Delvery Complete", vbInformation, "Delivery Import")
CloseConnection()
Related
I have a VB windows form application that has 02 ComboBox that provide newname input for a renaming file event. The first combobox provide prefix for new name comprise items (aa, bb, cc,... can add more through keydown button click event), the other combobox provide main name comprise items (XX, YY, ZZ,.. can also add more through keydown button click event). When I select "aa" from the first combobox, "XX" from the other then fire the rename event, the new file name should be "aa - XX", if file "aa - XX" has already existed then add "1" to the last as "aa - XX 1" and so on and if no item selected in prefix combobox the newname just be "XX" and increment. I get the old file name through a system openfiledialog. My code for rename as follows:
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim var As String, prfix As String
var = ComboBox1.Text
prfix = ComboBox2.Text
If ComboBox2.Text = Nothing Then
If File.Exists(n & "\" & var & extn) = False Then
My.Computer.FileSystem.RenameFile(OpenFD.FileName, var & extn)
Else
Dim i As Integer = 1
Dim newfn As String = var & " " & i & extn
Dim m As String = n & "\" & newfn
While File.Exists(m)
newfn = var & " " & i & extn
m = n & "\" & newfn
i += 1
End While
My.Computer.FileSystem.RenameFile(OpenFD.FileName, newfn)
End If
Else
If File.Exists(n & "\" & prfix & " - " & var & extn) = False Then
My.Computer.FileSystem.RenameFile(OpenFD.FileName, prfix & " - " & var & extn)
Else
Dim j As Integer = 1
Dim newfn1 As String = prfix & " - " & var & " " & j & extn
Dim k As String = n & "\" & newfn1
While File.Exists(k)
newfn1 = var & " " & j & extn
k = n & "\" & newfn1
j += 1
End While
My.Computer.FileSystem.RenameFile(OpenFD.FileName, newfn1)
End If
End If
MessageBox.Show("Select a next file")
End Sub
My code run well 2 times. After I select "aa" and "XX" and leave it to rename, first result is "aa - XX", the second result is "aa - XX 1" but the third result is "XX", the forth is "XX 1" and then incrementing so on while the result should be "aa - XX 2" and next increment. I don't understand why combobox1 still effective but combobox2 as Nothing after no re-selecting the item in both comboboxes (2 times). I'm very new with VB so any advice should be much appreciated. Thanks.
In your lower Else block, you were incorrectly building up the file name.
You build up the first "newfn1" with:
Dim newfn1 As String = prfix & " - " & var & " " & j & extn
But then below, you used:
newfn1 = var & " " & j & extn
Notice the missing prefix and dash parts at the beginning.
Here's the full corrected version:
Dim j As Integer = 1
Dim newfn1 As String = prfix & " - " & var & " " & j & extn
Dim k As String = Path.Combine(n, newfn1)
While File.Exists(k)
j = j + 1
newfn1 = prfix & " - " & var & " " & j & extn
k = Path.Combine(n, newfn1)
End While
My.Computer.FileSystem.RenameFile(OpenFD.FileName, newfn1)
I'm a little confused by your explanation but if I understand correctly this should help,
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
CreateFile()
End Sub
Private BasePath As String = "" 'TODO
Private Ext As String = "txt"
Private Sub CreateFile()
If ComboBox1.SelectedIndex < 0 OrElse
ComboBox2.SelectedIndex < 0 OrElse
ComboBox1.SelectedItem.ToString = "" OrElse
ComboBox2.SelectedItem.ToString = "" Then
'error message
Exit Sub
End If
Dim fileName As String = String.Format("{0}-{1}.{2}",
ComboBox1.SelectedItem.ToString,
ComboBox2.SelectedItem.ToString,
Ext)
fileName = IO.Path.Combine(BasePath, fileName)
Dim ct As Integer = 1
Do While IO.File.Exists(fileName)
fileName = String.Format("{0}-{1}{3}.{2}",
ComboBox1.SelectedItem.ToString,
ComboBox2.SelectedItem.ToString,
Ext,
ct)
fileName = IO.Path.Combine(BasePath, fileName)
ct += 1
Loop
Dim fs As IO.FileStream = IO.File.Create(fileName)
fs.Close()
fs.Dispose()
End Sub
I'm currently writing a GUI for xmr-stak (www.xmrgui.com)
Having some trouble getting the output from the program and basically want to grab the last 30 lines from the output text file and append them to the RichTextBox if they don't already exist. Storing the text file in memory isn't a big issue because it will be deleted every 20 min or so...at least so I think. Maybe my function is taking up too much memory or time as it is.
My only requirement is that the Sub TimerOutput_tick can process each of the 30 last lines of text from the file to run a regex on each line and that the RichTextBox does not repeat old information.
Heres my code:
Private Function getlastlines(filename As String, numberOfLines As Integer) As Dictionary(Of Integer, String)
Try
Dim fs = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)
Dim reader As StreamReader = New StreamReader(fs)
Dim everything As New Dictionary(Of Integer, String)
Dim n As Integer = 1
While reader.Peek > -1
Dim line = reader.ReadLine()
If everything.ContainsKey(n) Then
everything(n) = line
n += 1
Else
everything.Add(n, line)
n += 1
End If
End While
Dim results As New Dictionary(Of Integer, String)
Dim z As Integer = 1
If n - numberOfLines > 0 Then
For x As Integer = n - numberOfLines To n - 1
'MsgBox(everything.Count - numberOfLines)
If results.ContainsKey(z) Then
results(z) = everything(x)
z += 1
Else
results.Add(z, everything(x))
z += 1
End If
Next
End If
Return results
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End Function
' GRABS XMR-STAK OUTPUT FROM ReadLastLinesFromFile AND RUNS A REGEX ON THE HASHRATE TO PROVIDE VALUES TO THE CHART
And here is the Sub that calls the previous function:
Private Sub timeroutput_Tick(sender As Object, e As EventArgs) Handles timeroutput.Tick
'Try
Dim lateststring = getlastlines(xmroutput, 30)
Try
If lateststring IsNot rtlateststring Then
Dim kvp As KeyValuePair(Of Integer, String)
For Each kvp In lateststring
If lateststring.ContainsKey(kvp.Key) Then
Dim line = kvp.Value
RichTextBox1.AppendText(line & vbCrLf)
If line.Contains("Totals") Then ' Should be "Totals"
'Dim regex As Regex = New Regex("\d+?.\d+")
Dim regex As Regex = New Regex("\d{1,5}\.\d{1,1}") ' match a double
Dim ret = regex.Match(line).Value
If ret <> "" Then
Dim iSpan As TimeSpan = TimeSpan.FromSeconds(upseconds)
Label8.Text = "Uptime - Hours: " & iSpan.Hours & " Minutes: " & iSpan.Minutes & " Seconds: " & iSpan.Seconds & " " & ret & " H/s"
NotifyIcon1.Text = "Uptime - Hours: " & iSpan.Hours & vbCrLf & " Minutes: " & iSpan.Minutes & vbCrLf & " Seconds: " & iSpan.Seconds & vbCrLf & ret & " H/s"
Else
Dim iSpan As TimeSpan = TimeSpan.FromSeconds(upseconds)
NotifyIcon1.Text = "Uptime - Hours: " & iSpan.Hours & vbCrLf & " Minutes: " & iSpan.Minutes & vbCrLf & " Seconds: " & iSpan.Seconds & vbCrLf & "Initializing..."
Label8.Text = "Uptime - Hours: " & iSpan.Hours & " Minutes: " & iSpan.Minutes & " Seconds: " & iSpan.Seconds & " Initializing..."
ret = "0.0"
End If
'Dim match As Match = regex.Match(lastline)
newhashrate = Convert.ToDouble(ret)
ElseIf line.Contains("NVIDIA") Then
Dim regexnv As Regex = New Regex("\d{1,5}\.\d{1,1}") ' match a double
Dim retnv = regexnv.Match(line).Value
newNVhashRate = Convert.ToDouble(retnv)
If firstNV = False Then
newser.Add(nvidiacard1)
nvidiacard1.Title = "NIVIDIA Hashrate(H/s)"
nvidiacard1.Values = nvidiavalues
nvidiavalues.add(0)
nvidiavalues.add(4)
nvidiavalues.add(2)
nvidiavalues.add(5)
firstNV = True
End If
ElseIf line.Contains("AMD") Then
Dim regexAMD As Regex = New Regex("\d{1,5}\.\d{1,1}") ' match a double
Dim retAMD = regexAMD.Match(line).Value
newAMDhashrate = Convert.ToDouble(retAMD)
If firstAMD = False Then
newser.Add(AMDCard1)
AMDCard1.Title = "AMD Hashrate(H/s)"
AMDCard1.Values = AMDValues
AMDValues.add(0)
AMDValues.add(4)
AMDValues.add(2)
AMDValues.add(5)
firstAMD = True
End If
End If
' Now if a GPU exists, add a new lineseries for CPU
If firstAMD = True Or firstNV = True Then
If firstCPU = False Then
newser.Add(CPU1)
CPU1.Title = "CPU Hashrate(H/s)"
CPU1.Values = CPUValues
CPUValues.add(0)
CPUValues.add(4)
CPUValues.add(2)
CPUValues.add(5)
firstCPU = True
End If
newCPUhashrate = newhashrate - newNVhashRate - newAMDhashrate
End If
rtlateststring = lateststring
End If
Next
RichTextBox1.SelectionStart = RichTextBox1.Text.Length
End If
Catch
End Try
End Sub
I've found a much easier solution, running the code within one function and then loading the entire text file into the richtextbox. From there its much easier to read the last ten lines individually:
Private Sub timeroutput_Tick(sender As Object, e As EventArgs) Handles timeroutput.Tick
Try
'Dim lateststring = getlastlines(xmroutput, 30)
' START NEW TEST
Dim fs = File.Open(xmroutput, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)
Dim reader As StreamReader = New StreamReader(fs)
Dim wholefile = reader.ReadToEnd
RichTextBox1.Text = wholefile
RichTextBox1.SelectionStart = RichTextBox1.Text.Length
For x As Integer = 1 To 10
Dim line As String = RichTextBox1.Lines(RichTextBox1.Lines.Length - x)
If line.Contains("Totals") Then ' Should be "Totals"
'Dim regex As Regex = New Regex("\d+?.\d+")
Dim regex As Regex = New Regex("\d{1,5}\.\d{1,1}") ' match a double
Dim ret = regex.Match(line).Value
If ret <> "" Then
Dim iSpan As TimeSpan = TimeSpan.FromSeconds(upseconds)
Label8.Text = "Uptime - Hours: " & iSpan.Hours & " Minutes: " & iSpan.Minutes & " Seconds: " & iSpan.Seconds & " " & ret & " H/s"
NotifyIcon1.Text = "Uptime - Hours: " & iSpan.Hours & vbCrLf & " Minutes: " & iSpan.Minutes & vbCrLf & " Seconds: " & iSpan.Seconds & vbCrLf & ret & " H/s"
Else
Dim iSpan As TimeSpan = TimeSpan.FromSeconds(upseconds)
NotifyIcon1.Text = "Uptime - Hours: " & iSpan.Hours & vbCrLf & " Minutes: " & iSpan.Minutes & vbCrLf & " Seconds: " & iSpan.Seconds & vbCrLf & "Initializing..."
Label8.Text = "Uptime - Hours: " & iSpan.Hours & " Minutes: " & iSpan.Minutes & " Seconds: " & iSpan.Seconds & " Initializing..."
ret = "0.0"
End If
'Dim match As Match = regex.Match(lastline)
newhashrate = Convert.ToDouble(ret)
ElseIf line.Contains("NVIDIA") Then
Dim regexnv As Regex = New Regex("\d{1,5}\.\d{1,1}") ' match a double
Dim retnv = regexnv.Match(line).Value
newNVhashRate = Convert.ToDouble(retnv)
If firstNV = False Then
newser.Add(nvidiacard1)
nvidiacard1.Title = "NIVIDIA Hashrate(H/s)"
nvidiacard1.Values = nvidiavalues
For Each z In Chartvalues
Chartvalues.remove(z)
Next
nvidiavalues.add(0)
firstNV = True
End If
ElseIf line.Contains("AMD") Then
Dim regexAMD As Regex = New Regex("\d{1,5}\.\d{1,1}") ' match a double
Dim retAMD = regexAMD.Match(line).Value
newAMDhashrate = Convert.ToDouble(retAMD)
If firstAMD = False Then
newser.Add(AMDCard1)
AMDCard1.Title = "AMD Hashrate(H/s)"
AMDCard1.Values = AMDValues
For Each z In Chartvalues
Chartvalues.remove(z)
Next
AMDValues.add(0)
firstAMD = True
End If
End If
' Now if a GPU exists, add a new lineseries for CPU
If firstAMD = True Or firstNV = True Then
If firstCPU = False Then
newser.Add(CPU1)
CPU1.Title = "CPU Hashrate(H/s)"
CPU1.Values = CPUValues
For Each z In Chartvalues
Chartvalues.remove(z)
Next
CPUValues.add(0)
Chartvalues.add(0)
firstCPU = True
End If
newCPUhashrate = newhashrate - newNVhashRate - newAMDhashrate
End If
Next
Catch
End Try
' END NEW TEST
End Sub
My Function works fine until I return an empty or NULL result, then i get the error: Conversion from string "" to type 'Date' is not valid.
VB.NET:
Public Function GetNextWaitListed(ByVal ClassName As String, ByVal ClassDate As Date, ByVal ClassTime As String) As String
Dim connStr As String = ConfigurationManager.AppSettings.Get("TechTrainingConn")
Dim conn As New Data.OleDb.OleDbConnection(connStr)
Try
conn.Open()
Dim sql As String = "SELECT Min(SubmitTime) FROM [EnrollmentsTbl]" & _
" WHERE [ClassName] = """ & ClassName & """" & _
" AND [ClassDate] = #" & ClassDate & "#" & _
" AND [ClassTime] = """ & ClassTime & """" & _
" AND [Waitlisted] = True" & _
" AND [Completed] = False" & _
" AND [Enrolled] = True"
Dim comm As New Data.OleDb.OleDbCommand(sql, conn)
Dim result As Date = comm.ExecuteScalar()
If Not String.IsNullOrEmpty(result) Then
Return result
End If
Catch ex As Exception
Response.Write(ex)
Finally
conn.Close()
End Try
End Function
I have tried the following but am a little confused since I returning a date
If Not String.IsNullOrEmpty(result) Then
Dim oDate As DateTime = Convert.ToDateTime(result)
Return oDate
End If
The best solution for me was to return into object and if object was empty do the else with dummy date
Public Function GetNextWaitListed(ByVal ClassName As String, ByVal ClassDate As Date, ByVal ClassTime As String) As String
Dim connStr As String = ConfigurationManager.AppSettings.Get("TechTrainingConn")
Dim conn As New Data.OleDb.OleDbConnection(connStr)
Try
conn.Open()
Dim sql As String = "SELECT Min(SubmitTime) FROM [EnrollmentsTbl]" & _
" WHERE [ClassName] = """ & ClassName & """" & _
" AND [ClassDate] = #" & ClassDate & "#" & _
" AND [ClassTime] = """ & ClassTime & """" & _
" AND [Waitlisted] = True" & _
" AND [Completed] = False" & _
" AND [Enrolled] = True"
Dim comm As New Data.OleDb.OleDbCommand(sql, conn)
Dim Obj As Object = comm.ExecuteScalar()
If (Obj IsNot Nothing) AndAlso (Obj IsNot DBNull.Value) Then
Dim matches As String = Obj.ToString
Dim result As Date = Convert.ToDateTime(matches)
Return result
Else
Dim result As Date = Convert.ToDateTime("01/01/1900")
Return result
End If
Catch ex As Exception
Response.Write(ex)
If Not conn Is Nothing Then
conn.Close()
End If
Finally
conn.Close()
End Try
End Function
I've created a Windows Form application. It is my understanding that you do not have to have a Sub Main() in a Windows Form app. However I'm getting this error when I build my project:
BC30420 'Sub Main' was not found in 'LoanCalculator.Module1'.
First of all I don't know why it's saying 'LoanCalculator.Module1'. Both my form and my class are named LoanCalculator.vb. When I started the project I started writing the code in the original module. Then I added a module, named it 'LoanCalculator' and moved what code I had written to that module and finished it there. I deleted the original module. Now it builds fine with the exception of this one error. Here's my code:
Imports System.Windows.Forms
Public Class LoanCalculator
Private Sub Calculate()
Dim str As String
Dim intLoanAmt As Integer
Dim intDown As Integer
Dim intFees As Integer
Dim intBalance As Integer
Dim dblIntsRate As Single
Dim intLoanTerm As Integer
Dim sngInterestPaid As Single
Dim intTermMonths As Integer
Dim dblMonthlyPmt As Integer
Dim intTotalPaid As Integer
Dim dblYon As Double
Dim dblXon As Double
Dim dblZon As Double
If Not CheckInput() Then
Return
End If
intLoanAmt = Convert.ToInt32(txtLoan.Text)
intFees = Convert.ToInt32(txtFees.Text)
intDown = Convert.ToInt32(txtDown.Text)
intBalance = Convert.ToInt32(intLoanAmt - intDown + intFees)
intLoanTerm = Convert.ToInt32(txtTerm.Text)
dblIntsRate = Convert.ToDouble(txtTerm.Text)
intTermMonths = intLoanTerm * 12
dblYon = dblIntsRate / 1200
dblXon = dblYon + 1
dblZon = Math.Pow(dblXon, intTermMonths) - 1
dblMonthlyPmt = (dblYon + (dblYon / dblZon)) * intBalance
intTotalPaid = dblMonthlyPmt * intTermMonths
sngInterestPaid = intTotalPaid - intBalance
str = "Loan balance =" & Space(11) & intBalance.ToString & vbCrLf
str = str & "Loan Term =" & Space(16) & intLoanTerm.ToString & " years" & vbCrLf
str = str & "Interest paid =" & Space(17) & intTotalPaid.ToString & vbCrLf
str = str & "Monthly payment =" & Space(5) & dblMonthlyPmt.ToString
lblResults.Text = str
End Sub
Private Function CheckInput() As Boolean
Dim strErr As String = ""
If txtLoan.Text.Length = 0 Then
strErr = "Enter loan amount" & vbCrLf
End If
If txtDown.Text.Length = 0 Then
strErr = strErr & "Enter down payment" & vbCrLf
End If
If txtInterest.Text.Length = 0 Then
strErr = strErr & "Enter interest rate" & vbCrLf
End If
If txtFees.Text.Length = 0 Then
strErr = strErr & "Enter fees" & vbCrLf
End If
If txtTerm.Text.Length = 0 Then
strErr = strErr & "Enter loan term" & vbCrLf
End If
If strErr.Length > 0 Then
MessageBox.Show(strErr)
Return False
Else
Return True
End If
End Function
End Class
How can I fix this?
hey guys i am having a problem in my application with the vbtab
can anyone know what is the problem
this is my code:
txtshowpayments.Text = "Student's ID" & vbTab & "Student's Name" & vbTab & "Total Payment" & vbCrLf
Class217FileReader = New StreamReader("class217.txt")
PaymentsFileReader = New StreamReader("payments.txt")
Do Until PaymentsFileReader.EndOfStream
Do Until Class217FileReader.EndOfStream
Dim aline As String = Class217FileReader.ReadLine
Dim aline1 As String = PaymentsFileReader.ReadLine
Dim fields() As String = aline.Split(","c)
Dim fields1() As String = aline1.Split(","c)
Dim StudentId As Integer = Convert.ToInt32(fields1(0))
Dim studentId1 As Integer = Convert.ToInt32(fields(0))
Dim StudentName As String = fields(1) & " " & fields(2)
Dim totalpayment As Integer = Convert.ToInt32(fields1(1)) + Convert.ToInt32(fields1(2)) + Convert.ToInt32(fields1(3))
If ShouldDisplay(StudentId, studentId1) Then
txtshowpayments.Text &= StudentId & vbTab & StudentName & vbTab & String.Format("{0:C}", totalpayment) & vbCrLf
End If
Loop
Loop
Thank you for the help
Use a Format String:
Dim formatString As String = "{0,-12} {1,-14} {2}" & vbCrLf
txtshowpayments.Text = String.Format(formatString, "Student's ID", "Student's Name", "Total Payment")
formatString = String.Replace("{2}", "{2:C}")
Class217FileReader = New StreamReader("class217.txt")
PaymentsFileReader = New StreamReader("payments.txt")
Do Until PaymentsFileReader.EndOfStream
Do Until Class217FileReader.EndOfStream
Dim aline As String = Class217FileReader.ReadLine
Dim aline1 As String = PaymentsFileReader.ReadLine
Dim fields() As String = aline.Split(","c)
Dim fields1() As String = aline1.Split(","c)
Dim StudentId As Integer = Convert.ToInt32(fields1(0))
Dim studentId1 As Integer = Convert.ToInt32(fields(0))
Dim StudentName As String = fields(1) & " " & fields(2)
Dim totalpayment As Integer = Convert.ToInt32(fields1(1)) + Convert.ToInt32(fields1(2)) + Convert.ToInt32(fields1(3))
If ShouldDisplay(StudentId, studentId1) Then
txtshowpayments.Text &= String.Format(formatString, StudentId, StudentName, totalpayment)
End If
Loop
Loop
Even better... look into a DataGrid control.