. Net built-in errorprovider Control Handler

(Domestic version)



In the past, we always tried to show "Data Statistics... In fact,. NET is already largeProgramThe internal problem is solved; that is, the internal errorprovider is used to control the internal control of the table where the internal problem occurs.

The following is a simple application using the errorprovider program:

' Textbox1 controls the volume content

If   Not   Isnumeric (Textbox1.text) Then

' Display textbox1 to control the response content

Errorprovider1.seterror (textbox1, " Data cannot be written. Please input the number (from zero to zero )! " )

' Move mouse cursor to textbox1 control cursor

Textbox1.focus ()

' Select All textbox1 to control worker content

Textbox1.selectall ()

Else

' Clear textbox1 and control the response content.

Errorprovider1.seterror (textbox1, "" )

End   If

Each time textbox1 controls that the content of the cursor is not a number, errorprovider will display a small and dynamic screenshot (Red exclaimation icon) in textbox1 to control the cursor. The edited response message will be displayed in the tooltips of the small album. Do you think it is much better than MessageBox? At least the user does not need to press the return key or move the mouse to close the MessageBox!

Use this to control the ingress... Not very difficult... It may be worth a try. If you lose it, you will not suffer any losses ~