Building Your Own Bandwidth Calculator -...

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The Code Behind the Tool:

Building Your Own

Bandwidth Calculator

By: Bronx

http://thwack.solarwinds.com/people/Bronx

http://www.solarwinds.com/

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Table of Contents

Getting the Environment Set-Up ............................................................................................. 3

Lesson 1 - Installation ................................................................................................................. 3

Lesson 2 – The Environment ........................................................................................................ 3

Creating the VB form ............................................................................................................... 5

Lesson 3 – The Build .................................................................................................................... 5

Writing the Code ..................................................................................................................... 8

Lesson 4 - The Coding .................................................................................................................. 8

Compiling the Code ............................................................................................................... 10

Lesson 5 - Compiling the code ................................................................................................... 11

About SolarWinds Server and Application Monitor ............................................................... 19

© 2003-2012 SolarWinds. All Rights Reserved.

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Building Your Own Bandwidth Calculator

Getting the Environment Set-Up

A while back, I took it upon myself to create an internal tool we needed here at SolarWinds. Hence,

the Bandwidth Calculator was born. This calculator was designed specifically for Server & Application Monitor (SAM) to estimate the recommended amount of bandwidth needed for a certain amount of component monitors based on their protocol. As you can see below, 21 WMI component monitors would, on average, use the same amount of bandwidth as 10,000 SNMP component monitors.

In this series, I will explain step by step how I built this calculator, explain what everything means, then give you all the code needed along the way so you can build one yourself. This will be your Visual Basic (VB) classroom starting today. At the end, you get to keep the calculator you've re-created below (it even talks).

Note: The only way to get this calculator is to build it following the steps in this document. It will not be available for download nor will SolarWinds offer support for this tool. The code for this tool is made available for educational purposes only.

Lesson 1 – Installation

Before we begin, you'll need to install Visual Basic® Express 2010, free courtesy of Microsoft®. Click here to begin downloading, followed by the installation.

Lesson 2 – The Environment

Now open Visual Studio® Express and select New Project from the File menu. A new window will pop open. From there, select Windows Form Application and then click OK.

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http://go.microsoft.com/?linkid=9709929

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If you done everything successfully, your screen should now look like this:

Now you have all you need to build the Bandwidth Calculator, minus the code. Let me explain what you're looking at above:

Highlighted in red is a Form. A form, in essence, is a window; hence the name, Windows. A form is an empty workspace where all of your buttons and controls will live, once you put them there. (Notice the form of the calculator above with all of its controls.)

Highlighted in green is the Toolbox. The toolbox contains all of the controls you will need to build almost anything, including the calculator. (In fact, you can even build your own controls, but I will not cover that in this piece.) These controls may be placed on the form as needed. As you can see in the calculator, there are multiple text boxes, sliders, labels, a pie chart, and a button. These all came from the toolbox.

Highlighted in purple is the Properties window. Every control, or object (including the form itself) has certain properties. These properties can be set and changed both before running the program and while the program is running. Think about the properties of television. One property is its color. Other properties include the TV's height, weight,

picture resolution, and so on. The reason the button on the calculator says "Reset" is because I changed the Text property in the Properties window to read "Reset."

Homework

Play around with this new environment and try to get comfortable. Explore the controls and the properties of the more common controls.

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Tip: Once you place a control on the form and select it, the Properties window will show the properties of that control.

Creating the Visual Basic form

Creating the visual elements of the calculator

Lesson 3 – The Build

First, open Visual Basic and create a new project. (Use the pictures above as a visual aid.)

Get the Form in Shape:

1. Stretch the Form to make it about twice as wide as it is high. (Select it and grab a corner

node to do this.)

2. With the Form still selected, go to the Properties window to the right of the Form and

find the Text property.

3. Change the default text from Form1 to Bandwidth Calculator.

4. Also in the Properties window, change the Name property to read frmMain.

Make a Container:

1. From the Toolbox on the left, select Groupbox and draw one on the left side of your

Form. This Groupbox will house the majority of your controls. Ensure that it's wide

enough to do so.

2. With the Groupbox still selected, go to the Properties window to the right of the Form

and find the Text property.

3. Change the default text from Groupbox1 to Number of Monitors (1-10,000).

Label It:

1. From the Toolbox on the left, select Label, then draw four labels on the Form inside the

Groupbox.

2. Change the text of these Labels to read, WMI, SNMP, RPC, and Nodes (ICMP).

3. Arrange them in the Groupbox on the Form as illustrated above.

Get the Textboxes Out:

1. From the Toolbox on the left, select Textbox.

2. Draw four Textboxes below the Labels you created in the previous step.

3. Change the Text property of these four Textboxes to read nothing. (Delete the default

text from the Properties window for each Textbox.)

4. Change the name of each Textbox using the Properties window. Rename these four

Textboxes to txtWMI, txtSNMP, txtRPC, and txtICMP.

5. Arrange them under their respective labels (created in the previous steps).

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Now We Need Sliders:

1. From the Toolbox on the left, select TrackBar (a slider).

2. Place four TrackBars on the Form to the right of each Textbox you created in the

previous section. (Note: These also go into the Groupbox.)

3. Change the name of each TrackBar using the Properties window.

4. Rename these four TrackBars to TBWMI, TBSNMP, TBRPC, and TBICMP.

5. Arrange them to the right of their respective Textbox while still keeping them in the Groupbox.

More Labeling:

1. From the Toolbox on the left, select Label.

2. Draw four labels on the Form inside the Groupbox and to the right of each TrackBar.

3. Change the Name property of these Labels to read, lblWMI, lblSNMP, lblRPC, and lblICMP.

4. Change the Text property of these Labels to all read 00.00 Kbps.

5. Arrange them in the Groupbox on the Form as illustrated above.

6. Add an additional Label above these four and change the Text property to read Per Protocol.

Adding a PictureBox:

1. From the Toolbox on the left, select PictureBox.

2. Place it and size it in the GroupBox next to the Reset button (in the initial illustration).

3. To change the image of the PictureBox:

a. Select the Image property for it from the Properties window.

b. From there, click the ellipsis (...) button, and then select Local Resource.

c. Click Import, then select an image and click OK.

d. Change the Name property of the Picturebox to picSpeak.

Add the Button:

1. From the Toolbox on the left, select Button

2. Place it on the Form and in the Groupbox next to the PictureBox.

3. From the Properties window, change the Name property of the button to cmdReset.

4. Change the Text property of the button to read Reset.

Still More Labeling:

1. From the Toolbox on the left, select Label.

2. Change the Text property of the Label to read Share of Bandwidth.

3. Place it outside of the Groupbox and to the top-right of the Form, as illustrated above.

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The Pie Chart:

1. From the Toolbox on the left, under the collapsed heading, Data, select Chart.

2. Draw a Chart on the right side of the Form and outside of the Groupbox, as illustrated

above.

a. From the Properties window, change the Series property by clicking the ellipsis

(...) button.

3. Select ChartType and then select Pie from the dropdown menu.

4. Click OK.

More Groupboxes:

1. Add two more Groupboxes to the Form.

2. Change the Text property of the first to read Total Number of Monitors.

3. Change the Text property of the second to read Recommended Bandwidth. 4. Arrange them on the Form as shown above.

5. Inside the Total Number of Monitors Groupbox, add a Label.

a. Rename the Label in the Property window to lblMonitors.

b. Change the Text property to read 0.

6. Inside the Recommended Bandwidth Groupbox, add a Label.

a. Rename it in the Property window to lblTotal. b. Change the Text property to read 00.00Kbps.

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If you've done everything successfully, you should have a Form that looks something like this:

This probably looks a bit different from what you have, which leads to today's homework assignment.

Homework

Now, I've given you the minimum you need to design the calculator. That is, all the objects needed for the calculator to work are now on the Form. By now, I'm sure you've noticed there are many more properties that you can tweak, like the color and size of the fonts. Your assignment is to play with these properties and try and get the calculator to look as close in appearance to the one at the top of this paper.

Next, we'll begin coding.....oooooohhhhh.

Writing the Code

Lesson 4 – The Coding

The first question you may have is, "Where does the code go?" From the design screen, you can either double-click the form (or any object on the form) to be taken to the Code View, or, click the highlighted red icon above the Properties window in the Solution Explorer, as shown below on the right. All of the code for this project will fall between Public Class frmMain and End Class, also highlighted below:

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What Does the Code Mean?

The Visual Basic code we will write is a set of specific instructions designed to do what we want within our program, in this case, calculate figures based on certain parameters. Below is a code snippet taken from the calculator with a detailed explanation of what each element is and does. Be aware that this is only a small bit of code. Explaining every line of the calculator in detail is simply not practical. The point of this exercise is to provide an introductory explanation, hoping you'll pursue more on your own. In the end, you will have a working bandwidth calculator for SAM's components.

Code Snippet Explained

The apostrophe (') is a keyword used in Visual Basic to denote a remark or comment. The original keyword in BASIC was REM (which still works) which is short for "Remark." Anything following either of these two keywords will not be executed when the program is run. I've added comments to each line. Comments appear as green text. VB keywords appear as blue text. Note: Code is normally indented to make it easier to read.

Reminder: The only way to get this calculator is to build it following the steps in this series. It will not be available for download nor will SolarWinds offer support for this tool. The code for this tool is made available for educational purposes only.

Private Sub WMICalc() ' This is the beginning of a subroutine (aka: sub, a block of code named WMICalc). This subroutine ends with END SUB, at the bottom. PRIVATE means (in essence) that this code will not execute unless called upon. On Error Resume Next ' ON ERROR is a keyword that tells the code to do something in the event of an error, in this case, RESUME NEXT (do nothing differently). WMIStat = 315 ' WMIStat is a variable we created that holds a number, which can change. In this case it is equal to 315. WMINeededBW = WMIStat * WMIMonitorNumbers 'This is a formula using three numeric variables to perform multiplication, as denoted by the asterisk (*). WMIConvert = ((WMINeededBW / 1024) * 8) / 1024 ' Another formula of division and multiplication with variables and numbers. Any formula within parentheses will execute first.

'If...Then statement. This is a conditional meaning - If this happens, then do this; if not, do that. If WMIConvert = 0 Then lblWMI.Text = "00.00 Kbps" : DoTotal() : Exit Sub ' In the line above, if a variable (WMIConvert) is equal to zero, then the code will set the label's text property to read, 00.00 Kpbs. If not, the next line of code will be read.



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' The colon (:) in the above line acts like a new line of code. If the IF statement is true, first - change the text of lblWMI, then navigate to the sub called DoTotal, then Exit the Sub. 'The below If...Then statement incorporates the Else statement. So we have IF, THEN, ELSE. If WMIConvert < 1 Then ' If the value of the variable, WMIConvert, is less than 1, execute the code below until the ELSE statement is reached. If not, execute the code below the ELSE statement, ending on the End IF statement. DoTotal() ' Call the sub, DoTotal and execute the code of that sub. WMIsuffix = " Kbps" ' This string variable is now equal to the text within the quotes. WMIConvert2 = WMIConvert * 1024 ' The variable, WMIConvert2 is equal to the value of the variable, WMIConvert, multiplied by the number 1024. lblWMI.Text = Format(WMIConvert2, "###,###") & WMIsuffix ' The text property of the label, lblWMI, is equal to the number held in the variable WMIConvert2 AND (&) the variable WMIsuffix. ' The Format(WMIConvert2, "###,###") formats the value of the variable WMIConvert2 to be in proper numerical readable format (999,123, as opposed to, 999123). In this case the comma is added after every three numbers. The ampersand (&) does not do addition, rather, it concatenates, or joins the two variables (e.g. 5 & 4 would result in 54) Exit Sub ' Work is done in this sub, perform no more actions Else DoTotal() ' Call the sub named, DoTotal, and execute the code of that sub. WMIsuffix = " Mbps" ' This string variable, WMISuffix, now stores the text within the quotes. lblWMI.Text = Format(WMIConvert, "standard") & WMIsuffix ' The text property of the variable, lblWMI, is equal to the number held in the variable WMIConvert AND (&) the variable WMIsuffix. The value is formatted using 'Standard'. Exit Sub ' Work is done in this sub, perform no more actions End If ' The required statement to close a multi-line If...Then...(Else) statement. End Sub ' This is the end of this subroutine.

Homework

None. You've been good thus far and I don't like homework either.

Compiling the Code

This is the one you've been waiting for. The code! Before you get too excited, let me clarify a few things, for the record:

The only way to get this calculator is to build it following the steps in this series. It will not

be available for download nor will SolarWinds offer support for this tool. The code for this

tool is made available for educational purposes only.

When built, the calculator will only provide recommendations based on a small amount of

testing. Your environment will be different and you may want to modify the code to suit

your needs. (Comments in the code are given on what to modify, if you so desire.)

This calculator has not been tested for accuracy and will not be supported in any way,

shape, or form, by SolarWinds, or by the author of this white paper.

SolarWinds is not responsible for any errors or non-working code. Sorry, you'll have to

troubleshoot yourselves.

This is only one of an infinite number of ways to code this calculator. I'm sure there are

more elegant designs. The bottom line is, it works.

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If and when you get this to work where others cannot, please help them if you can.

Wireshark is a free tool that you can use to measure and filter your bandwidth traffic.

Wireshark was used in getting bandwidth averages for the four protocols in this calculator.

You can use Wireshark to get your own averages and modify the figures in this code,

which is commented.

Lesson 5 – Compiling the code

Below is the code you will need to add to your calculator project in Visual Basic. In your calculator project, go to the Code view and delete everything. Next, copy and paste the code below. When done, you should have something that looks like this:

If all is well, hit the Play button, highlighted above. The calculator should appear before you working as planned. If everything works, compile your code into an executable.

Copy and Paste Me

Imports System.Data.OleDb Imports System.Drawing.Drawing2D Public Class frmMain Dim WMIMonitorNumbers, WMINeededBW, WMIStat, WMIConvert, WMITotal, FinalTotal, WMIConvert2 As Double Dim SNMPMonitorNumbers, SNMPNeededBW, SNMPStat, SNMPConvert, SNMPTotal, SNMPConvert2 As Double Dim RPCMonitorNumbers, RPCNeededBW, RPCStat, RPCConvert, RPCTotal, RPCConvert2 As Double Dim ICMPMonitorNumbers, ICMPNeededBW, ICMPStat, ICMPConvert, ICMPTotal, Monitortotal, ICMPConvert2 As Double Dim WMIsuffix, RPCsuffix, SNMPsuffix, ICMPsuffix, suffixtotal As String Dim All$

http://www.wireshark.org/download.html

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Private Sub txtWMI_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtWMI.LostFocus On Error Resume Next If IsNumeric(txtWMI.Text) = False Or Val(txtWMI.Text) > 10000 Then txtWMI.Text = "0" WMIMonitorNumbers = txtWMI.Text TBWMI.Value = 0 WMICalc() Exit Sub End If WMIMonitorNumbers = txtWMI.Text txtWMI.Text = Format(WMIMonitorNumbers, "###,###") WMICalc() If txtWMI.Text <= 10000 Then TBWMI.Value = txtWMI.Text Else TBWMI.Value = 10000 End If If WMIMonitorNumbers < 1 Then txtWMI.Text = "0" : WMICalc() End Sub Private Sub txtRPC_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtRPC.LostFocus On Error Resume Next If IsNumeric(txtRPC.Text) = False Or txtRPC.Text > 10000 Then txtRPC.Text = "0" RPCMonitorNumbers = txtRPC.Text TBRPC.Value = 0 RPCCalc() Exit Sub End If RPCMonitorNumbers = txtRPC.Text txtRPC.Text = Format(RPCMonitorNumbers, "###,###") RPCCalc() If txtRPC.Text <= 10000 Then TBRPC.Value = txtRPC.Text Else TBRPC.Value = 10000 End If If RPCMonitorNumbers < 1 Then txtRPC.Text = "0" : RPCCalc() End Sub Private Sub txtSNMP_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtSNMP.LostFocus On Error Resume Next If IsNumeric(txtSNMP.Text) = False Or txtSNMP.Text > 10000 Then txtSNMP.Text = "0" SNMPMonitorNumbers = txtSNMP.Text TBSNMP.Value = 0 SNMPCalc() Exit Sub End If SNMPMonitorNumbers = txtSNMP.Text txtSNMP.Text = Format(SNMPMonitorNumbers, "###,###") SNMPCalc() If txtSNMP.Text <= 10000 Then

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TBSNMP.Value = txtSNMP.Text Else TBSNMP.Value = 10000 End If If SNMPMonitorNumbers < 1 Then txtSNMP.Text = "0" : SNMPCalc() End Sub Private Sub txtICMP_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtICMP.LostFocus On Error Resume Next If IsNumeric(txtICMP.Text) = False Or txtICMP.Text > 10000 Then txtICMP.Text = "0" ICMPMonitorNumbers = txtICMP.Text TBICMP.Value = 0 ICMPCalc() Exit Sub End If ICMPMonitorNumbers = txtICMP.Text txtICMP.Text = Format(ICMPMonitorNumbers, "###,###") ICMPCalc() If txtICMP.Text <= 10000 Then TBICMP.Value = txtICMP.Text Else TBICMP.Value = 10000 End If If ICMPMonitorNumbers < 1 Then txtICMP.Text = "0" : ICMPCalc() End Sub Private Sub txtWMI_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles txtWMI.KeyDown On Error Resume Next If e.KeyCode = Keys.Return Then If IsNumeric(txtWMI.Text) = False Or txtWMI.Text > 10000 Then txtWMI.Text = "0" : Exit Sub End If WMIMonitorNumbers = txtWMI.Text txtWMI.Text = Format(WMIMonitorNumbers, "###,###") WMICalc() If txtWMI.Text <= 10000 Then TBWMI.Value = txtWMI.Text Else TBWMI.Value = 10000 End If End If End Sub Private Sub WMICalc() On Error Resume Next WMIStat = 315 'This is the key figure. This number represents multiple tests and averages using Wireshark, filtering out data that is not pertinent. Changing this number will allow you to fine tune the amount of bandwidth used by this protocol. WMINeededBW = WMIStat * WMIMonitorNumbers WMIConvert = ((WMINeededBW / 1024) * 8) / 1024 If WMIConvert = 0 Then lblWMI.Text = "00.00 Kbps" : DoTotal() : Exit Sub If WMIConvert < 1 Then DoTotal() WMIsuffix = " Kbps" WMIConvert2 = WMIConvert * 1024 lblWMI.Text = Format(WMIConvert2, "###,###") & WMIsuffix Exit Sub

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Else DoTotal() WMIsuffix = " Mbps" lblWMI.Text = Format(WMIConvert, "standard") & WMIsuffix Exit Sub End If End Sub Private Sub TBWMI_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TBWMI.ValueChanged On Error Resume Next WMIMonitorNumbers = TBWMI.Value If txtWMI.Text <= 10000 Then txtWMI.Text = Format(TBWMI.Value, "###,###") End If If WMIMonitorNumbers < 1 Then txtWMI.Text = "0" WMICalc() End Sub Private Sub txtSNMP_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles txtSNMP.KeyDown On Error Resume Next If e.KeyCode = Keys.Return Then If IsNumeric(txtSNMP.Text) = False Or txtSNMP.Text > 10000 Then txtSNMP.Text = "0" : Exit Sub End If SNMPMonitorNumbers = txtSNMP.Text txtSNMP.Text = Format(SNMPMonitorNumbers, "###,###") SNMPCalc() If txtSNMP.Text <= 10000 Then TBSNMP.Value = txtSNMP.Text Else TBSNMP.Value = 10000 End If End If End Sub Private Sub SNMPCalc() On Error Resume Next SNMPStat = 0.66 'This is the key figure. This number represents multiple tests and averages using Wireshark, filtering out data that is not pertinent. Changing this number will allow you to fine tune the amount of bandwidth used by this protocol. SNMPNeededBW = SNMPStat * SNMPMonitorNumbers SNMPConvert = ((SNMPNeededBW / 1024) * 8) / 1024 If SNMPConvert = 0 Then lblSNMP.Text = "00.00 Kbps" : DoTotal() : Exit Sub If SNMPConvert < 1 Then DoTotal() SNMPsuffix = " Kbps" SNMPConvert2 = SNMPConvert * 1024 If SNMPConvert2 < 1 Then SNMPConvert2 = 1 lblSNMP.Text = Format(SNMPConvert2, "###,###") & SNMPsuffix Exit Sub Else DoTotal() SNMPsuffix = " Mbps" lblSNMP.Text = Format(SNMPConvert, "standard") & SNMPsuffix Exit Sub End If End Sub Private Sub TBSNMP_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TBSNMP.ValueChanged On Error Resume Next SNMPMonitorNumbers = TBSNMP.Value If txtSNMP.Text <= 10000 Then txtSNMP.Text = Format(TBSNMP.Value, "###,###")

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End If If SNMPMonitorNumbers < 1 Then txtSNMP.Text = "0" SNMPCalc() End Sub Private Sub txtRPC_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles txtRPC.KeyDown On Error Resume Next If e.KeyCode = Keys.Return Then If IsNumeric(txtRPC.Text) = False Or txtRPC.Text > 10000 Then txtRPC.Text = "0" : Exit Sub End If RPCMonitorNumbers = txtRPC.Text txtRPC.Text = Format(RPCMonitorNumbers, "###,###") RPCCalc() If txtRPC.Text <= 10000 Then TBRPC.Value = txtRPC.Text Else TBRPC.Value = 10000 End If End If End Sub Private Sub RPCCalc() On Error Resume Next Dim Exponent As Double RPCStat = 2392 'This is the key figure. This number represents multiple tests and averages using Wireshark, filtering out data that is not pertinent. Changing this number will allow you to fine tune the amount of bandwidth used by this protocol. Exponent = 1 RPCStat = RPCStat ^ Exponent RPCNeededBW = RPCStat * RPCMonitorNumbers RPCConvert = ((RPCNeededBW / 1024) * 8) / 1024 If RPCConvert = 0 Then lblRPC.Text = "00.00 Kbps" : DoTotal() : Exit Sub If RPCConvert < 1 Then DoTotal() RPCsuffix = " Kbps" RPCConvert2 = RPCConvert * 1024 lblRPC.Text = Format(RPCConvert2, "###,###") & RPCsuffix Exit Sub Else DoTotal() RPCsuffix = " Mbps" lblRPC.Text = Format(RPCConvert, "standard") & RPCsuffix Exit Sub End If End Sub Private Sub TBRPC_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TBRPC.ValueChanged On Error Resume Next RPCMonitorNumbers = TBRPC.Value If txtRPC.Text <= 10000 Then txtRPC.Text = Format(TBRPC.Value, "###,###") End If If RPCMonitorNumbers < 1 Then txtRPC.Text = "0" RPCCalc() End Sub Private Sub txtICMP_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles txtICMP.KeyDown On Error Resume Next If e.KeyCode = Keys.Return Then If IsNumeric(txtICMP.Text) = False Then txtICMP.Text = "0" : Exit Sub End If ICMPMonitorNumbers = txtICMP.Text txtICMP.Text = Format(ICMPMonitorNumbers, "###,###")

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ICMPCalc() If txtICMP.Text <= 10000 Then TBICMP.Value = txtICMP.Text Else TBICMP.Value = 10000 End If End If End Sub Private Sub ICMPCalc() On Error Resume Next ICMPStat = 1.15 'This is the key figure. This number represents multiple tests and averages using Wireshark, filtering out data that is not pertinent. Changing this number will allow you to fine tune the amount of bandwidth used by this protocol. ICMPNeededBW = ICMPStat * ICMPMonitorNumbers ICMPConvert = ((ICMPNeededBW / 1024) * 8) / 1024 If ICMPConvert = 0 Then lblICMP.Text = "00.00 Kbps" : DoTotal() : Exit Sub If ICMPConvert < 1 Then DoTotal() ICMPsuffix = " Kbps" ICMPConvert2 = ICMPConvert * 1024 If ICMPConvert2 < 1 Then ICMPConvert2 = 1 lblICMP.Text = Format(ICMPConvert2, "###,###") & ICMPsuffix Exit Sub Else DoTotal() ICMPsuffix = " Mbps" lblICMP.Text = Format(ICMPConvert, "standard") & ICMPsuffix Exit Sub End If End Sub Private Sub TBICMP_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TBICMP.ValueChanged On Error Resume Next ICMPMonitorNumbers = TBICMP.Value If txtICMP.Text <= 10000 Then txtICMP.Text = Format(TBICMP.Value, "###,###") End If If ICMPMonitorNumbers < 1 Then txtICMP.Text = "0" ICMPCalc() End Sub Private Sub DoTotal() On Error Resume Next suffixtotal = " Mbps" FinalTotal = WMIConvert + SNMPConvert + RPCConvert + ICMPConvert If FinalTotal >= 1024 Then suffixtotal = " Gbps" FinalTotal = FinalTotal / 1024 End If If FinalTotal < 1 Then suffixtotal = " Kbps" FinalTotal = FinalTotal * 1024 End If Monitortotal = WMIMonitorNumbers + RPCMonitorNumbers + SNMPMonitorNumbers + ICMPMonitorNumbers lblMonitors.Text = Format(Monitortotal, "###,###") lblTotal.Text = Format(FinalTotal, "Standard") & suffixtotal If Monitortotal < 1 Then lblMonitors.Text = "0" FinalTotal = 0 Piecalc() End Sub

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Private Sub cmdReset_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdReset.Click txtWMI.Text = "0" txtRPC.Text = "0" txtSNMP.Text = "0" txtICMP.Text = "0" TBWMI.Value = 0 TBRPC.Value = 0 TBSNMP.Value = 0 TBICMP.Value = 0 DoTotal() txtWMI.Text = "0" txtRPC.Text = "0" txtSNMP.Text = "0" txtICMP.Text = "0" TBWMI.Value = 0 TBRPC.Value = 0 TBSNMP.Value = 0 TBICMP.Value = 0 lblMonitors.Text = "0" PieReset() End Sub Private Sub PieCalc() Chart1.Series.Clear() Dim ser1 As Windows.Forms.DataVisualization.Charting.Series ser1 = Chart1.Series.Add("Pie Chart") ser1.ChartType = DataVisualization.Charting.SeriesChartType.Pie ser1.Points(ser1.Points.AddY(WMIConvert)).AxisLabel = "WMI" ser1.Points(ser1.Points.AddY(SNMPConvert)).AxisLabel = "SNMP" ser1.Points(ser1.Points.AddY(RPCConvert)).AxisLabel = "RPC" ser1.Points(ser1.Points.AddY(ICMPConvert)).AxisLabel = "ICMP" If WMIConvert + SNMPConvert + RPCConvert + ICMPConvert = 0 Then PieReset() End Sub Private Sub PieReset() Chart1.Series.Clear() Dim ser1 As Windows.Forms.DataVisualization.Charting.Series ser1 = Chart1.Series.Add("Pie Chart") ser1.ChartType = DataVisualization.Charting.SeriesChartType.Pie ser1.Points(ser1.Points.AddY(100)).AxisLabel = "WMI" ser1.Points(ser1.Points.AddY(100)).AxisLabel = "SNMP" ser1.Points(ser1.Points.AddY(100)).AxisLabel = "RPC" ser1.Points(ser1.Points.AddY(100)).AxisLabel = "ICMP" End Sub Private Sub frmMain_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load PieReset() End Sub Private Sub speak() Dim SAPI Dim prefix$ Dim length As Integer Dim CNumber As Double SAPI = CreateObject("SAPI.spvoice") length = Len(lblTotal.Text) If Mid(lblTotal.Text, length - 3, 4) = "Mbps" Then prefix$ = "mega bits per second" Else prefix$ = "kilabits per second" End If CNumber = Val(lblTotal.Text) If Val(lblTotal.Text) = 0 Then All$ = "I need numbers to do a calculation. Zero is not an option." SAPI.Speak(All$) Exit Sub Else

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All$ = "The total recommended bandwidth for your" & Monitortotal & "monitors is" & CNumber & prefix$ SAPI.Speak(All$) Exit Sub End If End Sub Private Sub picSpeak_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles picSpeak.Click speak() End Sub End Class

Compiling Your Code into an Executable:

1. From the Build menu, select Build...

2. If successful, your executable should reside in a path similar to this:

C:\VS2010\Calculator\BWCalc\BWCalc\bin\Release

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About SolarWinds Server & Application Monitor

SolarWinds Server & Application Monitor delivers agentless performance and availability monitoring, alerting, and reporting for hundreds of applications and server types. Within minutes of download and installation, you can start monitoring virtually any application, including Microsoft® Exchange, Active Directory®, Java™, and more. Server & Application Monitor is an affordable, easy to use server monitoring tool that tracks the health of Dell™, HP®, and IBM System x® servers along with the underlying hardware for your VMware® hosts. Server & Application Monitor also provides insight into environmental data, hardware status, and more.

Product Highlights:

Monitors performance and user experience for virtually any application – Microsoft Exchange, Active Directory, IIS, any ODBC database, amd more

Monitors server hardware faults and operating systems across platforms – Windows, UNIX®, Linux®, and more

Provides expert guidance on what to monitor, why to monitor it, and optimal thresholds

Includes customizable dashboards and reports showing trends, capacity, and performance

Downloads and deploys in less than an hour, is simple to use, and easy on your budget

About SolarWinds

SolarWinds (NYSE: SWI) provides powerful and affordable IT management software to customers worldwide - from Fortune 500 enterprises to small businesses. The company works to put its users first and remove the obstacles that have become “status quo” in traditional enterprise software. SolarWinds products are downloadable, easy to use and maintain, and provide the power, scale, and flexibility needed to address users’ management priorities. SolarWinds’ online user community, http://thwack.com, is a gathering place where tens of thousands of IT pros solve problems, share technology, and participate in product development for all of the company’s products. Learn more today at http://solarwinds.com.

For additional information, please contact SolarWinds at 866.530.8100 or e-mail [email protected].

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Date post:	20-Sep-2018
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