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I have set of ZK attendance device that using static IP address. I'm enrolling users to this machines using zkmkeeper.dll in C#. now i want to delete old users from these machines using system. I can't find the function to delete users, but there is function to disable. I want to delete that users permanently from devices.

Saranga
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4 Answers4

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I had a similar issue when deleting userInfo or enrolled data but i found a workaround 

objCZKEM.DeleteEnrollData(machineId, userId, machineId, 12)

according to the documentation : 12 indicates deleting the user (including the fingerprints, card number and password).

Yuuuucef
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  • is it necessary to use machineId twice. – Saranga Dec 17 '19 at 09:04
  • According to the [Manual](https://github.com/hmojicag/NetFrameworkZKTecoAttLogsDemo/blob/master/ZKTeco_Standalone_SDK_Development_Manual_V2.1_A.2-EN.pdf) yes check page 77 – Yuuuucef Dec 18 '19 at 10:09
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@Yuuuucef, thank you for reference. According to documentation 

5.2.4.3 DeleteEnrollData
    VARIANT_BOOL DeleteEnrollData(LONG dwMachineNumber, LONG dwEnrollNumber,
LONG dwEMachineNumber, LONG dwBackupNumber)

The values of dwMachineNumber and dwEMachineNumber must be the same

zafern
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After trying many ways I have finally found a way. clear all user data using axCZKEM1.ClearData(Convert.ToInt32(number), flag) and re enroll the data using Database.

Saranga
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The way I found works for me. Use the SSR_deleteEnrollData function with only 3 parameters (while notice asks for 4 parameters)

SSR_deleteEnrolData(dwMachineNumber , dwEnrollNumber , dwBackupNumber)

Maybe depends of device version.

Ahmed Bamba
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