update only the first character in a feild

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Hello,
I'm new with the VB.NET, I started to create an app that helps to manage a small store.
I had a problem that i wanna update only the first character in all Rows where the first character = "H" and keep the rest.

Thanks.

Posted 16-Dec-14 22:48pm

ID Bouhouch El Bachir

Updated 16-Dec-14 22:54pm

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DamithSL 17-Dec-14 4:51am

first character of what? what you mean by field (Article)?

ID Bouhouch El Bachir 17-Dec-14 4:57am

I had a table with 3 fields : ID,Code,Article.
I wanna update the first character in all Articles where they start with "H"

DamithSL 17-Dec-14 5:05am

what is the column data type of Article?

ID Bouhouch El Bachir 17-Dec-14 5:10am

The column data type of article --> hyperlink
I wanna update only the first character and keep the rest.

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CPallini · Answer 1 · 2014-12-16T23:03:00

Solution 1

Assuming it is a String, you may use a Function like the following:

VB

Private Shared Function ChangeFirst(s As String, c As Char) As String
  ChangeFirst = c + s.Substring(1)
End Function

Called, for instance, this way:

VB

Dim s As String = "XXX"
s = ChangeFirst(s, "A"c)

Posted 16-Dec-14 23:03pm

CPallini