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I have data from database with symbol µ (micron) but cannot displaying on text box, the symbol change to (?)

What I have tried:

this is my code:

Call connection()

If Not connection() Then
AlertControl.Show(Me, "Connection Failed", "Information")
Exit Sub
End If

cmd = New FbCommand("Select i.RESERVED6,
From item i", cnCOA2)

rdr = cmd.ExecuteReader

If rdr.HasRows Then

TextBox40.Text = rdr.Item("RESERVED6")

End If

If cnCOA2.State = ConnectionState.Open Then
End If
Updated 19-Mar-20 22:47pm

1 solution

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Solution 1

Check your DB: make sure it's being stored in a NVARCHAR column, not a VARCHAR.
The difference is that NVARCHAR is Unicode, VARCHAR is ASCII - and the µ symbol is Uncode, like the textbox.
After that, provided the text box is using a font containing the µ symbol (and it is by default) it should work fine.

If it's currently a VARCHAR, you will probably have to reload all contents to get you symbols to work.

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