Not sure how to word the code line i need to show msgBox if no match is found.

[RLehrbass]

This is from my search button.
I need to add a line of code that will bring up a msgbox saying "No records match the search criteria" if no match is found in the record set. then close frmSearch.
I not quite sure how to word it though???
My frmSearch has 2 selections: cboSearchField and txtSearchString and a search button.
Here is my existing code:

Private Sub cmdSearch_Click()

If Len(cboSearchField) = 0 Or IsNull(cboSearchField) = True Then


MsgBox "You must select a field to search."

ElseIf Len(txtSearchString) = 0 Or IsNull(txtSearchString) = True Then
MsgBox "You must enter a search string."

Else

'Generate search criteria
GCriteria = cboSearchField.Value & " LIKE '*" & txtSearchString & "*'"

'Filter Members based on search criteria
Form_frmMember.RecordSource = "select * from tblMember where " & GCriteria
Form_frmMember.Caption = "Members (" & cboSearchField.Value & " contains '*" & txtSearchString & "*')"

'Close frmSearch
DoCmd.Close acForm, "frmSearch"

MsgBox "Results have been filtered."

End If

End Sub

[CJ_London]

try

Private Sub cmdSearch_Click()

    If nz(cboSearchField,"")="" Then
        MsgBox "You must select a field to search."

    ElseIf nz(txtSearchString,"") = "" Then
        MsgBox "You must enter a search string."
    
    Else

        'Generate search criteria
        GCriteria = cboSearchField.Value & " LIKE '*" & txtSearchString & "*'"

        if dcount("*","tblMember",GCriteria)=0 then

            msgbox "No records match the search criteria"

       else

            'Filter Members based on search criteria
            Form_frmMember.RecordSource = "select * from tblMember where " & GCriteria
            Form_frmMember.Caption = "Members (" & cboSearchField & " contains '*" & txtSearchString & "*')"

            'Close frmSearch
            DoCmd.Close acForm, "frmSearch"

            MsgBox "Results have been filtered."

        End if
    End If

 End Sub

[RLehrbass]

Works Great.
Thank You