Both if and else block are executed in Batch script - windows

Question

I am new to Batch scripting.
I am trying to write a script which parses given command and check if argument with name 'folder 'is present in that command and if not , add that argument with default value.
I have written following script. This scripts executes correctly if argument is missing.
But if argument is present , both if and else blocks are executed.
Please help. Thanks in advance.
#echo off
set ARGS=-action generate -folder "Source"
set t=%ARGS%
echo %t%|find "-folder" >nul
if errorlevel 1 (
goto setDefaultFolder
) else (
echo Folder is specified in command
)
:setDefaultFolder
echo Folder is NOT specified in command. User's current directory will be used as Folder.
set folderArgName=-folder
set folderArgValue="%cd%"
set folderArg=%folderArgName% %folderArgValue%
echo folderArgName : %folderArgName%
echo folderArgValue : %folderArgValue%
echo folderArg: %folderArg%
set ARGS=%ARGS% %folderArg%
echo ARGS : %ARGS%
Output of code :
Folder is specified in command
Folder is NOT specified in command. User's current directory will be used as Folder.
folderArgName : -folder
folderArgValue : "C:\work"
folderArg: -folder "C:\work"
ARGS : -action generate -folder "Source" -folder "C:\work"

Answer 1

You have to have a goto in the else, that goes to after the setDeafultFolder, otherwise it just will execute the setDefaultFolder after it
#echo off
set ARGS=-action generate -folder "Source"
set t=%ARGS%
echo %t%|find "-folder" >nul
if errorlevel 1 (
goto setDefaultFolder
) else (
echo Folder is specified in command
goto endOfBatch
)
:setDefaultFolder
echo Folder is NOT specified in command. User's current directory will be used as Folder.
set folderArgName=-folder
set folderArgValue="%cd%"
set folderArg=%folderArgName% %folderArgValue%
echo folderArgName : %folderArgName%
echo folderArgValue : %folderArgValue%
echo folderArg: %folderArg%
set ARGS=%ARGS% %folderArg%
echo ARGS : %ARGS%
:endOfBatch