.NET开发：Required_Field_OLEDB INSERT INTO .mdb data

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Required_Field_OLEDB INSERT INTO .mdb data

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<%@ Import Namespace="System.Data" %>
<%@ Import namespace="System.Data.OleDb" %>

<html>
<head>
    <title>Validating a Field</title>
</head>
<body>
    <form id="Form1" method="post" runat="server">
      <table id="Table1"
             style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 8px"
             cellSpacing="0" cellPadding="0" width="300" border="0">
        <tr>
          <td style="WIDTH: 115px">
            <asp:Label id="Label1" runat="server">Category Name</asp:Label>
          </td>
          <td>
            <asp:TextBox id="txtCategoryName" runat="server" width="193" />
          </td>
        </tr>
        <tr>
          <td style="WIDTH: 115px">
            <asp:Label id="Label2" runat="server">Description</asp:Label>
          </td>
          <td>
            <asp:TextBox id="txtDescription" runat="server" width="193" />
          </td>
        </tr>
        <tr>
          <td style="WIDTH: 115px" colSpan="2">
            <asp:Button id="btnInsert" runat="server"
                 OnClick="btnInsert_Click" width="298" text="INSERT!" />
          </td>
        </tr>
      </table>
      <asp:RequiredFieldValidator id="rfvCategoryName" runat="server"
          style="Z-INDEX: 102; LEFT: 316px; POSITION: absolute; TOP: 14px"
          ErrorMessage="Please insert the new category name"
          ControlToValidate="txtCategoryName" />
    </form>
</body>
</html>

private void Page_Load(object sender, System.EventArgs e)
{
string strConnection = "Provider=Microsoft.Jet.OleDb.4.0;";
strConnection += @"data source=\\genfs1\www11\etning\xml\Northwind.mdb";
}

private void btnInsert_Click(object sender, System.EventArgs e)
{
if (Page.IsValid)
{
String strSQL = "INSERT INTO Categories (CategoryName, Description) VALUES (?, ?)";

    OleDbCommand dbComm = new OleDbCommand(strSQL, objConnection);
    dbComm.Parameters.Add("CategoryName", OleDbType.VarChar, 32, "CategoryName");
    dbComm.Parameters.Add("Description", OleDbType.VarChar, 128, "Description");

dbComm.Parameters["CategoryName"].Value = txtCategoryName.Text;
dbComm.Parameters["Description"].Value = txtDescription.Text;

    try
    {
      objConnection.Open();
      dbComm.ExecuteNonQuery();
    }
    catch (Exception ex)
    {
      Response.Write(ex.Message);
      Response.End();
    }
    finally
    {
      if (objConnection.State == ConnectionState.Open);
        objConnection.Close();
    }

Response.Write("A new record has been added");
Response.End();
}
}
</script>

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