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How to deal with errors in VB language and how to debug goto statements and on error statements in code? aiming at this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and easy way.

Error handling and code debugging

First, error handling

If the program reports an error, if it is in the software development interface, the code will stop to the corresponding error line, and sometimes it is not accurate

On error resume next

Meaning: when an error occurs, let the program continue to run the next line of code, ignoring the error report

Goto statement

Goto tag name meaning: directly causes the code to jump to the corresponding tag line code

How to define the label?

Label name:

The actually executed code

Note: the code where the label is defined will still be executed by the program

In fact, we can use the idea of goto to construct a loop statement, but it is not recommended to use goto to construct a loop, nor is it recommended to use goto too much, because it will make the readability of the program worse

Use Goto in conjunction with error handling

On error goto err1

Err1:

Processing statement

Note: goto tags can only appear inside function or sub

Second, code debugging

Debugging steps

1. The breaking point. The program will be paused when it is powered off.

2, use the f8 button to enter the program code, you can enter function or sub to debug. Shfit+f8 refers to the execution of one line of code. Ctrl+shift+f8 means that you can jump directly out of function or sub

3. When debugging, you can see the value of the variable by placing the mouse over the variable

4. You can also see the results of the adjusted variables in the output console through the Debug.Print method.

Related codes:

Private Sub Command1_Click ()

On Error Resume Next

Print 1 / 0

Print "Liu Jinyu"

End Sub

Private Sub Command2_Click ()

GoTo web2

Print "Liu Jinyu"

Web:Print "ljy.kim"

Web2:Print "selidev.com"

GoTo web

End Sub

Private Sub Command3_Click ()

On Error GoTo err1Call cal (1,3) Print "Liu Jinyu" Print "Liu Jinyu programming"

Err1:MsgBox "made a mistake"

End Sub

Function cal (an As Integer, b As Integer)

Debug.Print (a + b)

Print a + b

End Function

This is the answer to the question about how to handle errors in VB language and how to debug goto statements and on error statements. I hope the above content can be of some help to you. If you still have a lot of doubts to solve, you can follow the industry information channel to learn more about it.

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