database loop

Hello All

Average Vb 2005 user here!

I currently have the below code to ping the first record in my database.

I'd like to set it up so that if an IP in the Database pings, it moves on to the next record e.g NetMonListDataSet1.Addresses.Rows(2).Item(0).ToString. if it doesn't receive a response it "sendsmymail()".

I know i need a For Each loop somewhere maybe? But i can't seem to fit it in.

Any help would be most welcome.

Code:

---

Dim myProcess As New Process()
        myProcess.StartInfo.UseShellExecute = False
        myProcess.StartInfo.RedirectStandardOutput = True
        Try
            myProcess.StartInfo.FileName = ("ping")
            myProcess.StartInfo.Arguments = NetMonListDataSet1.Addresses.Rows(1).Item(0).ToString
            myProcess.StartInfo.CreateNoWindow = True
            myProcess.Start()
            TextBox1.Text = _
              Replace(myProcess.StandardOutput.ReadToEnd(), _
              Chr(13) & Chr(13), Chr(13))
            myProcess.WaitForExit()

            If TextBox1.Text.Contains("unreachable") Or TextBox1.Text.Contains("Timed") Then
                sendmymail()
            Else
            End If

        Catch ex As System.ComponentModel.Win32Exception
            MsgBox((ex.Message + ". Error Detected."))
        End Try

    End Sub

---

Thanks

Paul

Code:

---

For I as Integer=1 to NetMonListDataSet1.Addresses.Count
      Dim myProcess As New Process()
        myProcess.StartInfo.UseShellExecute = False
        myProcess.StartInfo.RedirectStandardOutput = True
        Try
            myProcess.StartInfo.FileName = ("ping")
            myProcess.StartInfo.Arguments = NetMonListDataSet1.Addresses.Rows(I).Item(0).ToString
            myProcess.StartInfo.CreateNoWindow = True
            myProcess.Start()
            TextBox1.Text = _
              Replace(myProcess.StandardOutput.ReadToEnd(), _
              Chr(13) & Chr(13), Chr(13))
            myProcess.WaitForExit()

            If TextBox1.Text.Contains("unreachable") Or TextBox1.Text.Contains("Timed") Then
                sendmymail()
            Else
            End If

        Catch ex As System.ComponentModel.Win32Exception
            MsgBox((ex.Message + ". Error Detected."))
        End Try

    End Sub
Next I

---

Hello,

Thanks, that worked well.

I have put a try catch block here

Code:

---


            Try
                myProcess.StartInfo.Arguments = NetMonListDataSet1.Addresses.Rows(I).Item(0).ToString
            Catch
                MessageBox.Show("No more rows")
            End Try

---

As it had an error that it was reaching the end of the rows.

Is this the best way to do it? I couldn't find dataset1.empty or anything similar?

Thanks

Paul

Instead of

Code:

---

For I as Integer=1 to NetMonListDataSet1.Addresses.Count

---

try

Code:

---

For I as Integer=0 to NetMonListDataSet1.Addresses.Count-1

---

Indexing starts at 0 in many VB objects so the first item is 0 and the last item is count-1. Odds are that you are not getting the first record with your current code and trying to read one past the eof marker.

ah ha! yet another issue solved!

thanks you again!

Last issue I swear................

I'd like something along the lines of

Code:

---

TextBox2.Text = ("Searching For " & NetMonListDataSet1.Addresses.Rows(I).Item(0).ToString)

---

But it only appears after the last record? Anyway I can fit this in? Don't worry if you're fed up of responding to dumb questions. I should be able to work it out after some testing but you may know the answer instantly.

Thankyou all again.

Paul

Show your code...

Not much to go on in the last question but if I had to guess I would say that.
1: Most likely need a textbox2.refresh stuck in there
2: The code may execute to fast to see anything other than the last item.

Hello,

Code:

---

Sub Ping()
        For I As Integer = 0 To NetMonListDataSet1.Addresses.Count - 1
            Dim myProcess As New Process()
            myProcess.StartInfo.UseShellExecute = False
            myProcess.StartInfo.RedirectStandardOutput = True
            myProcess.StartInfo.FileName = ("ping")
            '    Try
            myProcess.StartInfo.Arguments = NetMonListDataSet1.Addresses.Rows(I).Item(0).ToString
            TextBox2.Text = ("Searching For " & NetMonListDataSet1.Addresses.Rows(I).Item(0).ToString)
            '    Catch
            '    MessageBox.Show("No more rows")
            '  End Try
            myProcess.StartInfo.CreateNoWindow = True
            myProcess.Start()
            TextBox1.Text = _
              Replace(myProcess.StandardOutput.ReadToEnd(), _
              Chr(13) & Chr(13), Chr(13))
            myProcess.WaitForExit()
            If TextBox1.Text.Contains("unreachable") Or TextBox1.Text.Contains("timed") Then
                sendmymail()
            Else

            End If
        Next I

---

As stated before it is only showing the last IP address in textbox2. So all other IP's in the database are ignored and the last one appears "searching for 192.168.1.5". It does seem to execute too fast, could I put a timer event on?

Thanks again.

Paul

It looks like it's working correctly, except that the textbox gets overwritten by each value, and it shows the last value. Why not add the items to a ListBox?