auto data(vb textbox) into mysql (database)

hi all expert...can anyone here help me integrate data into database..

#situation 1 - iam using rfid that scan card to get id number,the number then will display in textbox.
#situation 2 - the number in textbox then will be sent to the table...i have the table named = "test (Usage,rfidId)".
- what i want is when rfid detect the card and if the card number is equal with "rfidId" in table "test" the usage in that row will automatically plus with
some value (i choose $2) ..
Problem - the problem is when i scan for the second time the textbox will display with two id number that mean it cannot find correct equal with "rfidId"..i dont want
to use the clear button to clear the textbox...because i want it go automatically....is there any command that will automatically clear the textbox ???

can anyone help me how to do a sql command to solve this problem...here i attach the rfid reader coding....someone said to me that i need to replace textbox with grid view...but ho to do that....please...please...help me...

Attached Files

• Rfid Reader Coding.txt‎ (3.0 KB)