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While Trying to send Powershell Data to php form getting the Error: You cannot call a method on a null-valued expression RRS feed

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    Hi,

    I am trying to send the data of powershell to the registration form in php it is showing an error

    Code:

    Add-Type -AssemblyName Microsoft.VisualBasic

     $orderID= hostname
     $orderID1= (get-wmiobject -Class win32_bios).SerialNumber
     $OrderIDTextBox="hname" #  id of the Field Hostname in Registration form

    $OrderIDTextBox1="sno"# id of the field Serial no in Registration form
    $iterator = 1;
    $IE = New-Object -ComObject InternetExplorer.Application
    $ie.visible = $true
    $ie.navigate("http://localhost/asset.php")
    While ($IE.Busy -eq $true) {Start-Sleep -Milliseconds 2000} 

        Start-Sleep -Seconds 3
    $ie.Document.getElementById("$orderIDTextBox").value= "$OrderID"
    $ie.Document.getElementById("$orderIDTextBox1").value= "$OrderID1"

    error:

     

    You cannot call a method on a null-valued expression.
    At C:\Users\tpladmin\desktop\as.ps1:16 char:1
    + $ie.Document.getElementById("$orderIDTextBox").value= "$OrderID"
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
        + FullyQualifiedErrorId : InvokeMethodOnNull

    You cannot call a method on a null-valued expression.
    At C:\Users\tpladmin\desktop\as.ps1:17 char:1
    + $ie.Document.getElementById("$orderIDTextBox1").value= "$OrderID1"
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
        + FullyQualifiedErrorId : InvokeMethodOnNull

    Created the Value for the $ie with a Com Object. Web page with the url : http://localhost/asset.php is opening but unable to send the data to forms. Please help.

    Thanks in Advance.

     
    Saturday, November 16, 2019 7:17 PM
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    This error occurs when you try to call a method that does not exist. As a troubleshooting step I would try $ie.document |gm to check if 'getElementById' method is visible.
    Saturday, November 16, 2019 8:33 PM
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    Start by writing your code correctly. It will tell you the exact issue.

    $orderID= $env:COMPUTERNAME
$orderID1 = (get-wmiobject -Class win32_bios).SerialNumber

$ie = New-Object -ComObject InternetExplorer.Application
$ie.visible = $true
$ie.navigate('http://localhost/asset.php')
While($ie.Busy){
    Start-Sleep 1
} 

Try{
    if($tb1 = $ie.Document.getElementById('hname')){
        $tb1.value= $OrderID
        if($tb2 = $ie.Document.getElementById('sno')){
            $tb2.value= $OrderID1
        }else{
            Write-Host 'Control "sno" not found'
        }
    }else{
        Write-Host 'Control "hname" not found'
    }
}
Catch{
    Throw $_
}

    \_(ツ)_/



    Saturday, November 16, 2019 8:50 PM
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    Verify that your $ie.Document.getElementById("$orderIDTextBox") has actually returned an Element object. If it hasn't, then you can't get it's value. If there's no Element returned, are you sure you're using "hname" and "son" correctly? Perhaps they're names and not ID's? If they're names, use "getElementByName".

    --- Rich Matheisen MCSE&I, Exchange Ex-MVP (16 years)


    Saturday, November 16, 2019 9:05 PM
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    Monday, November 18, 2019 5:56 AM
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