Perdona, si es web
aqui va
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="AccessDataSource1">
<Columns>
<asp:TemplateField id="c1" HeaderText="este">
<EditItemTemplate>
<asp:TextBox ID="textboxedition" runat="server" TextMode="Password" ></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
saludos
peter