ERROR The following changes to error handling in Windows PowerShell 3.0 might affect scripts written in Windows PowerShell 2.0. Change Sample Error Message Workaround An expandable string with "<${}>" # expands to: <$> + "${}" Use a variable name + ~ variable name is now an Empty ${} variable error. reference, there should be a name between the braces. "<$()>" # expands to: <$> No error message, result Just use a '$' instead of An expandable string with empty of sample is: $(). sub-expression now results in <> different output. $server = "msp42" + "$server: $status" "${server}: $status" In an expandable string, an $status = "online" + ~~~~~~~~ incomplete variable name is an "$server: $status" Invalid variable error. # output in V2: reference. '$' was not : online followed by a valid variable name character. Consider using ${} to delimit the name. echo -InputObject ,1 + echo -InputObject ,1 In most cases, the comma A parameter followed by the + ~ operator is a comma operator is treated as unary Missing argument in typographical error. comma operator, which is not parameter list. permitted when invoking a command. Incorrectly typed array indices raise "abc"['def'] Cannot convert value "def" Correct the script. to type "System.Int32". an exception. Error: "Input string was not in a correct format." At line:1 char:1 + "abc"['def'] + ~~~~~~~~~~~~
ERROR The following changes to error handling in Windows PowerShell 3.0 might affect scripts written in Windows PowerShell 2.0. Change Sample Error Message Workaround An expandable string with variable name is now an error. "<${}>" # expands to: <$> + "${}" + ~ Empty ${} variable reference, there should be a name between the braces. Use a variable name An expandable string with empty sub-expression now results in different output. "<$()>" # expands to: <$> No error message, result of sample is: <> Just use a '$' instead of $(). In an expandable string, an incomplete variable name is an error. $server = "msp42" $status = "online" "$server: $status" # output in V2: : online + "$server: $status" + ~~~~~~~~ Invalid variable reference. '$' was not followed by a valid variable name character. Consider using ${} to delimit the name. "${server}: $status" A parameter followed by the comma operator is treated as unary comma operator, which is not permitted when invoking a command. echo -InputObject ,1 + echo -InputObject ,1 + ~ Missing argument in parameter list. In most cases, the comma operator is a typographical error. Incorrectly typed array indices raise an exception. "abc"['def'] Cannot convert value "def" to type "System.Int32". Error: "Input string was not in a correct format." At line:1 char:1 + "abc"['def'] + ~~~~~~~~~~~~ Correct the script.
WMF%203%20Release%20Notes.docx