Loop same case in select case in vb.net - vb.net

Question

I want to come up with this problem.... if there's only 1 false in loop then it will not insert into database and vise versa if all true then it will insert to database.
Here's is my code
Public Function Check_Foreign_Key(ByVal select_column_name As String, ByVal table_name As String, ByVal where_column_name As String, ByVal where_value As String, ByRef Foreign_Key As String) As Boolean
Dim dt_service_provider_id As DataTable = ExecuteSQLQuery("select " & select_column_name & " from " & table_name & " where " & where_column_name & " = '" & where_value & "'")
If dt_service_provider_id.Rows.Count = 0 Then
Return False
Else
Foreign_Key = dt_service_provider_id.Rows(0).Item(0).ToString()
Return True
End If
End Function
For Each dr As DataRow In dt.Rows
Dim dt_rows as Integer = 0
Dim site_id As Boolean = Check_Foreign_Key("site_id", "sites", "site_code", dr(2).ToString, dt_fk)
If dr(0).ToString.Length > 50 And dr(0).ToString = "" And dr(0).ToString Is Nothing Then
get_error(dt.TableName, dt.Columns(2).ToString, dt_row.ToString, "Character is greater than 50")
'in here i want to continue checking go to next, i think i got error in cheking if dr(0) is empty
Else
If dr(1).ToString.Length > 50 And dr(1).ToString = "" And dr(1).ToString Is Nothing Then
get_error(dt.TableName, dt.Columns(2).ToString, dt_row.ToString, "Character is greater than 50")
'in here i want to continue again to next
Else
Select Case site_id
Case False
get_error(dt.TableName, dt.Columns(2).ToString, dt_row.ToString, dr(2).ToString)
Return
End Select
End If
End If
dt_row += 1
Next
THis is the code i only i know but unfortunately i cannot get my logic it always inserting rather it have 1 false

Answer 1

Hope this solve the problem
Dim blnAllTrue As Boolean = True
For Each dr As DataRow In dt.Rows
Dim site_id As Boolean = Check_Foreign_Key("site_id", "sites", "site_code", dr(2).ToString, dt_fk)
blnAllTrue = blnAllTrue And site_id
If site_id = False Then
get_error(dt.TableName, dt.Columns(2).ToString, dt_row.ToString, dr(2).ToString)
End If
Next
If blnAllTrue = True Then
'insert into your database
End If

Answer 2

Try this
Private SaveToDB()
For Each dr As DataRow In dt.Rows
Dim site_id As Boolean = Check_Foreign_Key("site_id", "sites", "site_code", dr(2).ToString, dt_fk)
Select Case site_id
Case False
get_error(dt.TableName, dt.Columns(2).ToString, dt_row.ToString, dr(2).ToString)
Return
End Select
Next
'if you got here means no error
'NOTE: You should loop again and save the rows
For Each dr As DataRow In dt.Rows
'Your code to save into the database here
Next
End Sub