Classic ASP 3.0 Create Array from a Recordset
I'm trying to fix an ASP Classic app and when I try to create an array from a Recordset Object. However I Can't get it to work correctly.
This code gives me a single record (the last one), but as far as I can see it is correct:
Dim Products
Dim Products_cmd
Dim Products_numRows
Set Products_cmd = Server.CreateObject ("ADODB.Command")
Products_cmd.ActiveConnection = Conn
Products_cmd.CommandText = "SELECT prod_id, prod_description FROM dbo.products ORDER BY prod_description ASC"
Products_cmd.Prepared = true
Set Products = Products_cmd.Execute
Products_numRows = 0
Dim arrProducts()
arrProducts = Products.Ge开发者_StackOverflow社区tRows()
Using this code gives me an "Subscript out of range: 'UBound'
Dim Products
Dim Products_cmd
Dim Products_numRows
Set Products_cmd = Server.CreateObject ("ADODB.Command")
Products_cmd.ActiveConnection = Conn
Products_cmd.CommandText = "SELECT prod_id, prod_description FROM dbo.products ORDER BY prod_description ASC"
Products_cmd.Prepared = true
Set Products = Products_cmd.Execute
Products_numRows = 0
Dim arrProducts()
Dim counter
For counter = 0 to Products.RecordCount - 1
ReDim Preserve arrProducts(counter,2)
arrProducts(counter,0) = Products.Fields.Item("prod_id").Value
arrProducts(counter,1) = Products.Fields.Item("prod_description").Value
Products.MoveNext
Next
Response.Write(Str(UBound(arrProducts)))
Any ideas would be GREATLY appreciated...
Your are almost there, the problem is that GetRows()
returns a 2 dimensional array, and you need to tell Ubound
what dimension do you want.
Working code:
Dim Products
Dim Products_cmd
Dim Products_numRows
Set Products_cmd = Server.CreateObject ("ADODB.Command")
Products_cmd.ActiveConnection = Conn
Products_cmd.CommandText = "SELECT prod_id, prod_description FROM dbo.products ORDER BY prod_description ASC"
Products_cmd.Prepared = true
Set Products = Products_cmd.Execute
Dim arrProducts
arrProducts = Products.GetRows()
dim i
response.write "<table>"
For i = 0 to ubound(arrProducts, 2)
response.write "<tr>"
response.write("<td>" + trim(i+1))
response.write("<td>" + trim(arrProducts(0,i)))
response.write("<td>" + trim(arrProducts(1,i)))
next
response.write "</table>"
%>
To expand on amit_g explanation:
<% OPTION EXPLICIT %>
<%
sub echo(x)
response.write x
end sub
dim conn : set conn = server.createobject("ADODB.CONNECTION")
conn.open("Provider=SQLOLEDB;Data Source=.\SQLEXPRESS;Initial Catalog=tinker;uid=sa;pwd=devpassword")
dim sql : sql = "select '1a' as ColA , '1b' as ColB union all select '2a' , '2b' union all select '3a' , '3b' "
dim rs : set rs = conn.execute(SQL)
dim arr : arr = rs.GetRows()
dim cols : cols = ubound(arr,1)
dim rows : rows = ubound(arr,2)
dim x , y
echo "<table border='1' style='border-collapse:collapse;'>"
echo "<tr>"
echo "<td> </td>"
for x = 0 to cols
echo "<th>Col " & x & "</th>"
next
echo "</tr>"
for y = 0 to rows
echo "<tr>"
echo "<th>Row " & y & "</th>"
for x = 0 to cols
echo "<td>" & arr(x,y) & "</td>"
next
echo "</tr>"
next
echo "</table>"
%>
The first code block looks correct. Are you sure that you are reading the data in second dimension of the returned array? That is how the GetRow populates the array.
arrProducts(0, 0) => prod_id - row 1 arrProducts(1, 0) => prod_description - row 1
arrProducts(0, 1) => prod_id - row 2 arrProducts(1, 1) => prod_description - row 2
and so on. Also
Dim arrProducts()
should be
Dim arrProducts
http://www.asp101.com/samples/viewasp.asp?file=db_getrows.asp
I think the biggest confusing thing for a PHP programmer working in ASP is that array dimensions are in the reverse order of what you're expecting.
Coming from PHP I would expect theArray(0,2) to be the first record, third column. Nope. That's the first column of the third record. And if you want something resembling associative arrays you need to look into creating "dictionaries"
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