Displaying the output into html - powershell

Question

I got a code for pinging the servers repeatedly. That best suits for my object. But the thing I want to display the result of the code to the HTML page. How can I do it?
Function Ping-Host {
#Parameter Definition
Param (
[Parameter(position = 0)] $Hosts,
[Parameter] $ToCsv
)
#Funtion to make space so that formatting looks good
Function Make-Space($l,$Maximum) {
$space =""
$s = [int]($Maximum - $l) + 1
1..$s | %{$space+=" "}
return [String]$space
}
#Array Variable to store length of all hostnames
$LengthArray = #()
$Hosts | %{$LengthArray += $_.length}
#Find Maximum length of hostname to adjust column witdth accordingly
$Maximum = ($LengthArray | Measure-object -Maximum).maximum
$Count = $hosts.Count
#Initializing Array objects
$Success = New-Object int[] $Count
$Failure = New-Object int[] $Count
$Total = New-Object int[] $Count
cls
#Running a never ending loop
while ($true) {
$i = 0 #Index number of the host stored in the array
$out = "| HOST$(Make-Space 4 $Maximum)| STATUS | SUCCESS | FAILURE | ATTEMPTS |"
$Firstline=""
1..$out.length | %{$firstline+="_"}
#output the Header Row on the screen
Write-Host $Firstline
Write-host $out -ForegroundColor White -BackgroundColor Black
$Hosts | %{
$total[$i]++
if (Test-Connection $_ -Count 1 -Quiet -ErrorAction SilentlyContinue) {
$success[$i]+=1
#Percent calclated on basis of number of attempts made
$SuccessPercent = $("{0:N2}" -f (($success[$i]/$total[$i])*100))
$FailurePercent = $("{0:N2}" -f (($Failure[$i]/$total[$i])*100))
#Print status UP in GREEN if above condition is met
Write-Host "| $_$(Make-Space $_.Length $Maximum)| UP$(Make-Space 2 4) | $SuccessPercent`%$(Make-Space ([string]$SuccessPercent).length 6) | $FailurePercent`%$(Make-Space ([string]$FailurePercent).length 6) | $($Total[$i])$(Make-Space ([string]$Total[$i]).length 9)|" -BackgroundColor Green
} else {
$Failure[$i]+=1
#Percent calclated on basis of number of attempts made
$SuccessPercent = $("{0:N2}" -f (($success[$i]/$total[$i])*100))
$FailurePercent = $("{0:N2}" -f (($Failure[$i]/$total[$i])*100))
#Print status DOWN in RED if above condition is met
Write-Host "| $_$(Make-Space $_.Length $Maximum)| DOWN$(Make-Space 4 4) | $SuccessPercent`%$(Make-Space ([string]$SuccessPercent).length 6) | $FailurePercent`%$(Make-Space ([string]$FailurePercent).length 6) | $($Total[$i])$(Make-Space ([string]$Total[$i]).length 9)|" -BackgroundColor Red
}
$i++
}
#Pause the loop for few seconds so that output
#stays on screen for a while and doesn't refreshes
Start-Sleep -Seconds 10
cls
}
}
Ping-Host '10.50.5.33'

Answer 1

ConvertTo-HTML is the simple answer here but first you need to have object based output. Currently you are just outputting text to the console with Write-Host. In order to make that work you are doing some fancy formatting footwork which unfortunately is useless if you are just going to be outputting to HTML.
You can change this if you want but I didnt like the idea of while($true) since it will break the natural creation of the HTML Table. Obviously you are entitled to do what you want but this should be a working version that almost duplicates what you have. If you want to do some formatting I recommend you look up html styles.
Function Ping-Hosts{
param(
[string[]]$hosts,
[int]$MaxPings=100
)
# Hashtable that will record ongoing statistics
$results = $hosts | ForEach-Object{
#{
$_ = #{
Successes = 0
Attempts = 0
}
}
}
1..$MaxPings | ForEach-Object{
# Ping each computer a maximumn number of times.
$pingCount = $_
$hosts | ForEach-Object{
# Clear output statistics
$props = #{
Host = $_
Status = "Down" # Assume it's down.
}
# Perform a single ping
if (Test-Connection $_ -Count 1 -Quiet -ErrorAction SilentlyContinue){
# Success
$results.$_.Successes = $results.$_.Successes + 1
$props.Status = "UP"
}
# Raise the number of attempts
$results.$_.Attempts = $results.$_.Attempts + 1
# Calculate statistics
If($results.$_.Successes -eq 0){
$props.Success = "{0:p2}" -f 0
} else {
$props.Success = "{0:p2}" -f ($results.$_.Attempts / $results.$_.Successes)
}
If($results.$_.Attempts - $results.$_.Successes -eq 0){
$props.Failure = "{0:p2}" -f 0
} else {
$props.Failure = "{0:p2}" -f ($results.$_.Attempts / ($results.$_.Attempts - $results.$_.Successes))
}
$props.Attempts = $results.$_.Attempts
# Output results.
New-Object -TypeName psobject -Property $props
}
}
}
Sample execution
Ping-Hosts "c4222","C4280" | ConvertTo-Html -Fragment
Partial Sample Output
<tr><th>Host</th><th>Status</th><th>Attempts</th><th>Failure</th><th>Success</th></tr>
<tr><td>c4222</td><td>UP</td><td>1</td><td>0.00 %</td><td>100.00 %</td></tr>
<tr><td>C4280</td><td>UP</td><td>1</td><td>0.00 %</td><td>100.00 %</td></tr>
<tr><td>c4222</td><td>UP</td><td>2</td><td>0.00 %</td><td>100.00 %</td></tr>
<tr><td>C4280</td><td>UP</td><td>2</td><td>0.00 %</td><td>100.00 %</td></tr>
Closer to what you wanted
If you want something other than this I would look into css formatting closer. This is not the way I would have done it but have a look. You are complicating things by asking for the extra headers as you go (maybe there is a better way but we are off topic enough for this question)
Function Ping-Hosts{
param(
[string[]]$hosts,
[int]$MaxPings=100
)
# Hashtable that will record ongoing statistics
$results = $hosts | ForEach-Object{
#{
$_ = #{
Successes = 0
Attempts = 0
}
}
}
1..$MaxPings | ForEach-Object{
# Ping each computer a maximumn number of times.
$pingCount = $_
$hosts | ForEach-Object{
# Clear output statistics
$props = #{
Host = $_
Status = "Down" # Assume it's down.
}
# Perform a single ping
if (Test-Connection $_ -Count 1 -Quiet -ErrorAction SilentlyContinue){
# Success
$results.$_.Successes = $results.$_.Successes + 1
$props.Status = "UP"
# Set the backround color
$colour = "#2FFF18"
} else {
# Set the backround color
$colour = "#FF2020"
}
# Raise the number of attempts
$results.$_.Attempts = $results.$_.Attempts + 1
$props.Attempts = $results.$_.Attempts
# Calculate statistics
If($results.$_.Successes -eq 0){
$props.Success = "{0:p2}" -f 0
} else {
$props.Success = "{0:p2}" -f ($results.$_.Attempts / $results.$_.Successes)
}
If($results.$_.Attempts - $results.$_.Successes -eq 0){
$props.Failure = "{0:p2}" -f 0
} else {
$props.Failure = "{0:p2}" -f ($results.$_.Attempts / ($results.$_.Attempts - $results.$_.Successes))
}
# Output results.
$frag = New-Object -TypeName psobject -Property $props | ConvertTo-Html -Fragment
$frag -replace "<tr><td>","<tr bgcolor=$colour><td>"
}
}
}
Sample Call
Ping-Hosts "c4222","3" -MaxPings 2 | Set-Content c:\temp\test.html
Sample Output