Please Help me understand..

I want to create a page that pulls a specific record from a database based on the value passed from a Request.QueryString. If the value is not in the string then it uses a default value of 1(one). Here is what I have so far:

' Determine if a Content ID has been passed in the query string
' If so use it as a variable in our SQL string to grab content for the page
' Httpcontext.Request.Querystring("Content_id")

Sub BindHomeBodyData() ' GRAB CONTENT *************************

Const strSQL as String = "SELECT * FROM Content WHERE Content_ID = " & Httpcontext.Request.Querystring("Content_id")
Dim myCommand as New SqlCommand(strSQL, myConnection)
Dim myDA as New SqlDataAdapter()
myDA.SelectCommand = myCommand
Dim myDS as New DataSet()
myDA.Fill(myDS)
dlHomeBodyData.DataSource = myDS
dlHomeBodyData.DataBind()

End SubNot tested:

Dim Content_ID As Integer = 1
If Not IsNull(Request.QueryString("Content_id")) Then
 Dim myRegEx As New RegEx("[^0-9]"), sContent As String = myRegEx.Replace(Request.QueryString("Content_id"), "")
 If sContent <> "" Then
 Content_ID = CInt(sContent)
 End If
End If

to take what you have given me and place it into what I have. Sorry I am an extreme newbie. Here is what I have is there any way you could educate me here and show me how to write this out according to my example. Thanks a lot I appreciate it.

Sub BindHomeBodyData() ' GRAB CONTENT *************************

Const strSQL as String = "SELECT * FROM Content WHERE Content_ID = " & Httpcontext.Request.Querystring("Content_id")
Dim myCommand as New SqlCommand(strSQL, myConnection)
Dim myDA as New SqlDataAdapter()
myDA.SelectCommand = myCommand
Dim myDS as New DataSet()
myDA.Fill(myDS)
dlHomeBodyData.DataSource = myDS
dlHomeBodyData.DataBind()

End Sub