Filtering or Querying specific records in a Form

The forth (4) argument (the WhereCondition) of the DoCmd.OpenForm is what you would normally use to pass a filter string.

Docmd.OpenForm(FormName, View, FilterName, WhereCondition, DataMode, WindowMode, OpenArgs)

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Example:

DoCmd.OpenForm "Employees", , ,"LastName = 'King'"

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Anders has shown you how to filter records when opening a form, but if you want to filter records in an already-open form, then you'd have to do things a little differently.

Many times I'll add filtering controls to the Form's Header, and then set the Form's Filter property based on the user's entries into those fields. For example, if I want the user to be able to search for a LastName in the form, I'd do this:

1. Add a textbox named "txSearch_LName" and a command button named "cmSearch"
2. Add code to the cmdSearch like this:

If Len(Me.txSearch_LName)>0 Then
  Me.Filter = "Last_Name LIKE '" & Me.txSearch_LName & "*'"
  Me.FilterOn = True
End If

This would filter the form's Recordset to show those records whose Last_Name data was like the data I entered in the txSearch_LName field.

Note you can get very, very complex with form filtering, so be sure you know exactly what you (and your users) will need before adding filtering processes.

Thanks!
As I am pretty new to this, I could use just a tad more guidance.
Where do I place the DoCmd.OpenForm code?
Dennis