How to Pass Parameter Where Clause IN?

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I facing Problem on pass the Parameter on WHERE Clause IN On VB.NET site
I have a Function below:

VB

Public Function getProjectDS(ByVal ProjectID As String) As DataSet

Dim cmd As New SqlCommand
cmd.Connection = con
cmd.CommandText = "SELECT * FROM Project WHERE ProjectID IN (@ProjectID)"
cmd.Parameters.Add("@ProjectID", SqlDbType.VarChar).Value = ProjectID

Dim ds As New DataSet
Dim da As New SqlDataAdapter(cmd)

da.Fill(ds)

Return ds

End Function

I like to get list Project Detail as in MSSQL Query as below:

SQL

SELECT * FROM Project WHERE ProjectID IN ('PFP','PSB','PSK')

I can not get same result as MSSQL Query if i use Function getProject("PFP,PSK,PSB")
just get nothing.
But if i use Function getProject("PFP") it only get me Project On ProjectID PFP Details.

I needed to help on Passing parameter ON WHERE CLAUSE IN On VB.net Site

Posted 11-Nov-12 17:01pm

pthsoon

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Dave Kreskowiak · Answer 1 · 2012-11-11T17:15:00

You can't do that. What you actually sent to the SQL server was this:

SELECT * FROM Project WHERE ProjectID IN ("'PFP', 'PSB', 'PSK'")

You didn't send a list of items, you sent a single string. Essentially the same as sending

... WHERE ProjectID IN ('I SENT THIS SINGLE, STRING NOT A LIST')

You can't directly send a list to SQL Server in the IN clause. Read this[^] for a possible alternate method.