Cannot find property on object that exists

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check if value exists in object javascript

I have an array of objects and am trying to manipulate it and am getting an error that the property RptFile does not exist. I have checked the spelling and everything and am baffled as to what is going on.

The code giving the error:

$AllContents | Where-Object {$_.RptFile -eq 'CB-Officer Trial New'} 

AllContents | Get-Member returns:


TypeName: Selected.System.Management.Automation.PSCustomObject

Name         MemberType   Definition                                            
----         ----------   ----------                                            
Equals       Method       bool Equals(System.Object obj)                        
GetHashCode  Method       int GetHashCode()                                     
GetType      Method       type GetType()                                        
ToString     Method       string ToString()                                     
RptFile      NoteProperty System.String RptFile=ABL - Branch5206 Daily OD Report
TotalSeconds NoteProperty System.String TotalSeconds=25   

So the property does exist. Any idea what is going on? If I just type $AllContents, I get a list with the property also.

What is your value for Set-StrictMode can you test to remove strict mode before your code?

Set-StrictMode -Off

What are the results for :

Get-Member -InputObject $AllContents

Get-Member -InputObject $AllContents[0].RptFile

How to check a key exists in JavaScript object?, How do I check if an object contains a property? The property '#text' cannot be found on this object. Verify that the property exists and can be set.

Try first

$AllContents[0].RptFile = '<value>'

if not something like this should help:

[Your.Interface.Implemented.Explicitly].GetProperty("RptFile").SetValue($AllContents[0], '<value>',$null)

How to check whether an object exists in javascript ?, . hasOwnProperty is the way to go. All modern browsers support it. log4net:ERROR XmlHierarchyConfigurator: Cannot find Property [locationInfo] to set object on [log4ne These Forums are dedicated to discussion of DNN Platform and Evoq Solutions . For the benefit of the community and to protect the integrity of the ecosystem, please observe the following posting guidelines:

$rptFile = $AllContents | Select -Expand RptFile | Where { $_ eq 'CB-Officer Trial New' } 

How to Add, Modify, or Access JavaScript Object Literal Properties, How do I check if an object contains a key? exist. WARNING: Cannot bind argument to parameter 'downloadURL' because it is an empty string. WARNING: The property 'AbsoluteUri' cannot be found on this object. Verify that the property exists. WARNING: The property 'RequestMessage' cannot be found on this object. Verify that the property exists.

I'm not sure if this will be helpful, and I'm sure this is akin to thread necromancy, but I just ran into the same issue, and this was the first result on google.

I created the same problem with the following code:

Class A_Class
{
    [String] $AProperty

    A_Class()
    {
        $this.AProperty = "Something"
    }
}

Class Collection_Of_A_Class
{
    [System.Collections.Generic.Dictionary[int,A_Class[]]] $Objects #a dictionary, where i intended each entry to be a A_Class, but which is defined as an array of A_Class

    Collection_Of_A_Class()
    {
        $this.Objects = New-Object 'System.Collections.Generic.Dictionary[[int], A_Class[]]]'
    }

    [void]AddObject()
    {
        $this.Objects.Add(0,[A_Class]::New())
    }
}

$myCollection = [Collection_Of_A_Class]::New()

$myCollection.AddObject()

$myCollection.Objects[0].AProperty = "SomethingElse"

Basically, I was attempting to access the property of a member of an array as though it was a single object. Because the dictionary's data type is hard typed to an array, it took my single object and forced it to be an array. As a result, my property (as addressed) really doesn't exist. Changing the dictionary definition to:

[System.Collections.Generic.Dictionary[int,A_Class]] $Objects

and the instantiation to:

$this.Objects = New-Object 'System.Collections.Generic.Dictionary[[int],[A_Class]]'

fixes the problem.

You can also fix the problem by accessing via:

$myCollection.Objects[0][0].AProperty = "SomethingElse"

In this case, I've accessed dictionary object with index 0, and element 0 of the array stored there. In this case the property actually exists (as addressed).

I would check your code for a situation which results in the elements in $AllContents being arrays, rather than individual objects (or results in this some of the time, such as assuming a prior command would only return one object, when it returns numerous objects).

How do you check if a property exists in an object in JavaScript? SQL server could not start cannot find object or property (0x80092004) November 7, 2011. WMI Provider Error: Cannot find object or property (0x80092004)

If you use the any type instead of Object , you can access any property without compile errors. However, I would advise to create an interface  This function checks if the given property exists in the specified class. Note: As opposed with isset(), property_exists() returns TRUE even if the property has the value NULL.

method does not check for a property in the object's prototype chain. Array , hasOwnProperty method can check whether an index exists. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Learn more Cannot find property on object that exists

Which means if the property value is false, or the object property doesn't even exist, they give the same falsy result - which can be really bad if  "The Microsoft Access database engine could not find the object 'MSysDb'. Make sure the object exists and that you spell its name and the path name correctly. If 'MSysDb' is not a local object, check your network connection or contact the server administrator."

Comments
  • It won't let me post it all, but the first says TypeName: System.Object[]. The second gives TypeName: System.String. Both lists properties of rank, syncroot, length and a few others. No rptfile property.
  • This is exactly what happened to me, turns out I had Set-StrictMode in my machine's profile.ps1 (and the program that executed the script foolishly omitted -NoProfile)
  • That gives a list, which is what I get when I type $AllContents. I am trying to filter.
  • add a pipe with a where clause:
  • Property 'RptFile' cannot be found on this object. Make sure that it exists. At line:1 char:37 + $rptFile = $AllContents | Where {$_. <<<< RptFile -eq 'CB-Officer Trial New'} | Select -Expand RptFile + CategoryInfo : InvalidOperation: (.:OperatorToken) [], RuntimeException + FullyQualifiedErrorId : PropertyNotFoundStrict
  • You can add the where clause at the end:
  • If I do: $AllContents | Where-Object {$_.TotalSeconds -ge 20 }, I get results with 1 error in the middle. Is it possible there are a lot of NULL values for RptFile and that is why I am getting errors? Or maybe the array has items that aren't the same object with the RptFile property?