Asp.net gridview $Sign add column values

Question

Hi,

        I want to  add $Sign in my gridView column, I am using below code how to Dataformat string .  Where can i apply this code

DataFormatString="{0:C}" HtmlEncode="false" and how to apply this code


<asp:TemplateField HeaderText="currentbalance">

<ItemTemplate>

<%

# Eval("currentbalance") %></ItemTemplate>

<EditItemTemplate>

<asp:TextBox runat="server" CssClass="txt" ID="Editcurrentbalance" Text='<%# Bind("currentbalance") %>' />

</EditItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="minimumbalance">

<ItemTemplate>

<%

# Eval("minimumpayment")%></ItemTemplate>

<EditItemTemplate>

<asp:TextBox runat="server" CssClass="txt" ID="Editminimumbalance" Text='<%# Bind("minimumpayment") %>' />

</EditItemTemplate>

</asp:TemplateField>