Bind with dollar sign

hi,
 
 I want to show in grid view add dollar ($) in amount column , how to dataformat stirng use. I am not using databoundfield column . I am
using this code. Add dollar sign currentbalance column

<asp:GridView ID="GridView1" GridLines="None" runat="server" OnRowCancelingEdit="GridView1_RowCancelingEdit"

AutoGenerateColumns="false" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"

DataKeyNames="transid" OnRowDataBound="GridView1_RowDataBound" OnRowUpdating="GridView1_RowUpdating"

Height="362px" Style="margin-bottom: 39px" Width="705px">

<Columns>

<asp:TemplateField HeaderText="Id">

<ItemTemplate >

<%

# Eval("transid") %>ItemTemplate>

<EditItemTemplate>

<asp:Label runat="server" ID="transid" Text='<%# Bind("transid") %>' />

EditItemTemplate>

asp:TemplateField>

<asp:TemplateField HeaderText="DeptType">

<ItemTemplate>

<%

# Eval("depttype") %>ItemTemplate>

<EditItemTemplate>

<%

--%><asp:DropDownList runat="server" ID="Editdepttype" />

EditItemTemplate>

asp:TemplateField>

<asp:TemplateField HeaderText="lendername">

<ItemTemplate>

<%

# Eval("lendername") %>ItemTemplate>

<EditItemTemplate>

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

EditItemTemplate>

asp:TemplateField>

<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>

<asp:TemplateField HeaderText="actualpayment">

<ItemTemplate>

<%

# Eval("actualpayment") %>ItemTemplate>

<EditItemTemplate>

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

EditItemTemplate>

asp:TemplateField>

<asp:TemplateField HeaderText="interstrate">

<ItemTemplate>

<%

# Eval("interstrate")%>ItemTemplate>

<EditItemTemplate>

<asp:TextBox runat="server" Width="52px" ID="Editinterstrate" Text='<%# Bind("interstrate") %>' />

<%

<%

-- --%>----%>EditItemTemplate>

asp:TemplateField>

<%

--

-- %><asp:CommandField ShowEditButton="true" />

<asp:CommandField ShowDeleteButton="true" />

Columns>

asp:GridView>