VB.Net/Access 2007 DB Query Problem

I am brand spanking new to runtime db connections. I have a simple query problem that I can't seem to input the correct search criteria into Google find help.

Facts:
Using OleDB
runtime dev

Issue: I have a text box I want to use as the condition in which to query my Customer table and produce results in a DataGridView in VB. Everytime I execute my code I get the following: "Syntax error in string in query expression 'LastName >= (textbox contents)"

Here is my small sub executing this query:

Code:

---

    Public Sub SearchMenu()
        Dim SearchBox As String
        SearchBox = frmMain.txtName.Text
        Connection.Open()
        dvdDataSet.Clear()
        accCommand.CommandText = "SELECT * FROM Customer WHERE LastName >=' " & SearchBox
        accCommand.Connection = Connection
        dvdDataAdapter.SelectCommand = accCommand

        dvdDataAdapter.Fill(dvdDataSet, "Customers")
        frmMain.dvgFrmMain.DataSource = dvdDataSet.Tables("Customers")
    End Sub

---

Can anyone throw me a bone on this? My Gaddis book is just completely useless on database use.

Thanks a lot.

I have gotten the error reduced down to "No value given for one or more required parameters". I understand the statement but I still don't understand what I am missing in the statement. I have added everything needed. I have changed the code minimally but it still just isn't accepting it.

New code, minimal changes:

Code:

---

  Public Sub SearchMenu()
        Dim SearchBox As String
        SearchBox = frmMain.txtName.Text
        Connection.Open()
        dvdDataSet.Clear()
        accCommand.CommandText = "SELECT * FROM Customer WHERE LastName =" & SearchBox
        accCommand.Connection = Connection
        dvdDataAdapter.SelectCommand = accCommand

        dvdDataAdapter.Fill(dvdDataSet, "Customers")
        frmMain.dvgFrmMain.DataSource = dvdDataSet.Tables("Customers")
    End Sub

---

hahah Solved it myself!

Code:

---

accCommand.CommandText = "SELECT * FROM Customer Where LastName >= '" & SearchBox & "' ORDER BY LastName"

---

That's correct now. :)

For an explanation and examples of delimiters to use around values within SQL statements, see the article How do I use values (numbers, strings, dates) in SQL statements? from our Database Development FAQs/Tutorials (at the top of this forum)



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