Render SSRS Report with parameters using SOAP in Powershell

Question

I\'ve been toying with this for days with no luck. Essentially I\'m trying to build a simple library to render SSRS reports using Powershell. I\'m using Powershell in an a

Answer 1

I had a similar issue. It took time to figure out the issue. You should not "revoke" the report without parameters if needed Therefore the code should look like this:

try {
    <# Despose and clear resources if open #>
    if ($RS) { $RS.Dispose() }
    if ($Stream) { $Stream.Close() }

    <# Create Report Service #>
    [string]$reportServerURI = ""
    $RS = New-WebServiceProxy -Class 'RS' -NameSpace 'RS' -Uri $reportServerURI -UseDefaultCredential
    $RS.Url = $reportServerURI
    <# Set up some variables to hold referenced results from Render #>
    $deviceInfo = "True"
    $extension = ""
    $mimeType = ""
    $encoding = ""
    $warnings = $null
    $streamIDs = $null

    <# Initial Report #>
    $reportPath = ""
    ## Do not revoke the report ## $Report = $RS.GetType().GetMethod("LoadReport").Invoke($RS, @($reportPath, $null))
    <# Initial Report Parameters Array #> 
    $Parameters = $RS.GetType().GetMethod("LoadReport").Invoke($RS, @($reportPath, $null)).Parameters
    
    <# Populate Report Parameters values #>
    $Params = @()
    Foreach ($Parameter in $Parameters ) {
        $par1 = New-Object RS.ParameterValue;
        $Par1.Name = $Parameter.Name;
        $Par1.Label = $Parameter.Name;
        switch ($Par1.Name) {
                "<1st Param Name>"      { $par1.Value = <1st Param Value>; break }
                "<2nd Param Name>"      { $par1.Value = <2nd Param Value>; break }
                ...
                "<#n Param Name>"      { $par1.Value = <#n Param Value>; break }
            }
        $Params += $Par1;
        }

    <# Execute/invoke the report with the parameters #>
    $RS.SetExecutionParameters($Params, "en-us") > $null
    
    <# Set report render output format#>
    [string]$format = <"PDF","Excel" etc.>

    <# Eecute Report render #>
    try { $RenderOutput = $RS.Render($format,
    $deviceInfo,
    [ref] $extension,
    [ref] $mimeType,
    [ref] $encoding,
    [ref] $warnings,
    [ref] $streamIDs)       
    } catch { Log-Message -message "Unable to render or save the report due to an error." -IsError $true; throw
    }
    
    <# Convert array bytes to file and write #>
    $Stream = New-Object System.IO.FileStream(

Problem solved.