Question

I have following expression for currency formatting inside an ASP.Net Gridview. It does not show dollar format though there is no error. What is the missing point here?

<%# String.Format("{0:C}", Convert.ToString(Eval("Amount")) ) %>

MARKUP

 <asp:GridView ID="grdFinancialAmount" runat="server" AutoGenerateColumns="false">
        <Columns>
            <asp:TemplateField HeaderText="Emp ID">
                <ItemTemplate>
                    <%# Eval("EmpID")%>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Amount">
                <ItemTemplate>
                    <%# String.Format("{0:C}", Convert.ToString(Eval("Amount")) ) %>
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>

CODE BEHIND

protected void Page_Load(object sender, EventArgs e)
{
    Financial fin1 = new Financial { EmpID = 1, Amount = 5678 };
    Financial fin2 = new Financial { EmpID = 2, Amount = -111111 };

    List<Financial> accounts = new List<Financial>();
    accounts.Add(fin1);
    accounts.Add(fin2);

    grdFinancialAmount.DataSource = accounts;
    grdFinancialAmount.DataBind();


}


public class Financial
{
    public int EmpID { get; set; }
    public int Amount { get; set; }
}

Answer 1

Why not just do either…

<%# String.Format("{0:C}", Eval("Amount") ) %>

or

<%# ((int)Eval("Amount")).ToString("C") %>

Looks to me like you are trying to convert Amount to a string twice, and you can’t format a string as currency.