Powershell and SQL parameters. If empty string, pass DBNull
In PowerShell, you can treat null/empty strings as a boolean.
$x = $nullif ($x) { 'this wont print' }$x = ""if ($x) { 'this wont print' }$x = "blah"if ($x) { 'this will' }So.... having said that you can do:
$Parameter.Value = $(if ($x) { $x } else { [DBNull]::Value })But I'd much rather wrap this up in a function like:
function CatchNull([String]$x) { if ($x) { $x } else { [DBNull]::Value }}
I don't know about powershell, but in C# I would do something like this:
if ([string]::IsNullOrEmpty($objUser.Telephone)){ $objDbCmd.Parameters["@telephone"].Value = [DBNull]::Value;}else{ $objDbCmd.Parameters["@telephone"].Value = $objUser.Telephone;}
Always append +"" at the end of db values...
$command.Parameters["@EmployeeType"].Value= $ADResult.EmployeeType + ""