How to use if statement for xml file in powershell and how to remove child tag and its content

Question

How to use if statement and remove the child tag from output of that if statement in xml file as from my code i parsed all xml files . Now i want to check if sessionType is

Answer 1

Without really knowing what the XML file looks like, judging from your code, it should look something like below:

<?xml version="1.0" encoding="UTF-8"?> 
<Con> 
    <tar> 
        <tri>
            <int>
                <ses>Empty</ses>
                <description>Empty session state</description>
                <value>0</value>
            </int>
        </tri>
    </tar>
    <tar> 
        <tri>
            <int>
                <ses>RestrictedRemoteServer</ses>
                <description>Restricted remote server</description>
                <value>1</value>
            </int>
        </tri>
    </tar>
    <tar> 
        <tri>
            <int>
                <ses>Default</ses>
                <description>Default session state</description>
                <value>2</value>
            </int>
        </tri>
    </tar>
</Con>

In that case, this should work:

$name = Read-Host -Prompt "Enter the name of the sessiontype"

$result = Get-ChildItem -Path 'D:\Testing\TestcasesOutput' -Filter '*.xml' -File -Recurse |   #'# get a collection of xml FileInfo objects
    ForEach-Object {
        $file = $_
        try {
            [xml]$xml = Get-Content -Path $file.FullName -ErrorAction Stop
            # get an array of child nodes where the <ses> nodes contain the wanted sessionType
            $nodes = @($xml.Con.tar.tri.int.ChildNodes | Where-Object { $_.'#text' -eq $name })
            if ($nodes) {
                # we have found <ses> nodes containing the wanted sessionType 
                [PSCustomObject]@{
                    'File'        = $file.FullName  
                    'SessionType' = $nodes[0].'#text'
                }
                # loop through the $nodes array 
                $nodes | ForEach-Object {
                    ## DECIDE WHAT TO DO HERE ##

                    # remove all the subnodes of the <int> node, leaving an empty node <int></int>
                    $_.ParentNode.RemoveAll()

                    # OR: remove the <int> node completely, including all sub nodes
                    # $_.ParentNode.ParentNode.RemoveAll()

                    # OR: just remove the <ses>...</ses> subnode within the <int> node
                    # [void]$_.ParentNode.RemoveChild($_)
                }

                # create a filename for the output by adding 'Updated' to the name
                $outputfile = Join-Path -Path $file.DirectoryName -ChildPath ('{0}_Updated{1}' -f $file.BaseName, $file.Extension)
                # save the updated XML file
                Write-Host "Saving file '$outputfile'"
                $xml.Save($outputfile)
            }
            else {
                Write-Host "File '$($file.FullName)' did not contain SessionType $name"
            }
        }
        catch {
            Write-Warning "Bad XML file found: '$($file.FullName)'"
        }
    }

# output on screen
$result

# or save the results as CSV file somewhere
# $result | Export-Csv -Path 'PATH TO THE RESULTS CSV FILE' -NoTypeInformation

---

Edit

In case you do NOT want to preserve the original XML file, but overwrite it with the updated xml, use this:

$name = Read-Host -Prompt "Enter the name of the sessiontype"

$result = Get-ChildItem -Path 'D:\Testing\TestcasesOutput' -Filter '*.xml' -File -Recurse |   #'# get a collection of xml FileInfo objects
    ForEach-Object {
        $file = $_.FullName
        try {
            [xml]$xml = Get-Content -Path $file -ErrorAction Stop
            # get an array of child nodes where the <ses> nodes contain the wanted sessionType
            $nodes = @($xml.Con.tar.tri.int.ChildNodes | Where-Object { $_.'#text' -eq $name })
            if ($nodes) {
                # we have found <ses> nodes containing the wanted sessionType 
                [PSCustomObject]@{
                    'File'        = $file  
                    'SessionType' = $nodes[0].'#text'
                }
                # loop through the $nodes array 
                $nodes | ForEach-Object {
                    ## DECIDE WHAT TO DO HERE ##

                    # remove all the subnodes of the <int> node, leaving an empty node <int></int>
                    $_.ParentNode.RemoveAll()

                    # OR: remove the <int> node completely, including all sub nodes
                    # $_.ParentNode.ParentNode.RemoveAll()

                    # OR: just remove the <ses>...</ses> subnode within the <int> node
                    # [void]$_.ParentNode.RemoveChild($_)
                }

                # save the updated XML file
                Write-Host "Saving file '$file'"
                $xml.Save($file)
            }
            else {
                Write-Host "File '$file' did not contain SessionType $name"
            }
        }
        catch {
            Write-Warning "Bad XML file found: '$file'"
        }
    }

# output on screen
$result

# or save the results as CSV file somewhere
# $result | Export-Csv -Path 'PATH TO THE RESULTS CSV FILE' -NoTypeInformation

---

When used with a user input of Empty, the result will be:

<?xml version="1.0" encoding="UTF-8"?>
<Con>
  <tar>
    <tri>
      <int>
      </int>
    </tri>
  </tar>
  <tar>
    <tri>
      <int>
        <ses>RestrictedRemoteServer</ses>
        <description>Restricted remote server</description>
        <value>1</value>
      </int>
    </tri>
  </tar>
  <tar>
    <tri>
      <int>
        <ses>Default</ses>
        <description>Default session state</description>
        <value>2</value>
      </int>
    </tri>
  </tar>
</Con>

Hope that helps