字符串格式不工作评估和演示 [英] String Formatting Not working with Eval

问题描述

我有以下EX pression货币里面一个ASP.Net的GridView格式化。它不显示元格式，虽然没有发生错误。什么是缺少点吗？

 ＆LT;％＃的String.Format（{0：C}，Convert.ToString（EVAL（额）））％＆GT;
 

MARKUP

 ＆LT; ASP：GridView控件ID =grdFinancialAmount=服务器的AutoGenerateColumns =假＆GT;
        ＆LT;列＆GT;
            ＆LT; ASP：模板列HEADERTEXT =的Emp ID＆GT;
                ＆LT;的ItemTemplate＆GT;
                    ＆LT;％＃的eval（的EmpID）％＆GT;
                ＆LT; / ItemTemplate中＆GT;
            ＆LT; / ASP：的TemplateField＆GT;
            ＆LT; ASP：模板列HEADERTEXT =量与GT;
                ＆LT;的ItemTemplate＆GT;
                    ＆LT;％＃的String.Format（{0：C}，Convert.ToString（EVAL（额）））％＆GT;
                ＆LT; / ItemTemplate中＆GT;
            ＆LT; / ASP：的TemplateField＆GT;
        ＆LT; /列＆GT;
    ＆LT; / ASP：GridView控件＆GT;
 

code背后

 保护无效的Page_Load（对象发件人，EventArgs的）
{
    金融FIN1 =新的金融{的EmpID = 1，金额= 5678};
    金融FIN2 =新的金融{的EmpID = 2，金额= -111111};

    名单＆LT;金融与GT;帐户=新的名单，其中，金融与GT;（）;
    accounts.Add（FIN1）;
    accounts.Add（FIN2）;

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


}


公共类金融
{
    公众诠释的EmpID {获得;组; }
    公众诠释金额{获得;组; }
}
 

解决方案

为什么不只是做要么...

 ＆LT;％＃的String.Format（{0：C}中，eval（数量））％＆GT;
 

或

 ＆LT;％＃（（INT）的eval（数量））的ToString（C）％＆GT;
 

在我看来像你正试图金额转换为字符串两次，你不能格式化字符串作为货币。

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; }
}

解决方案

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.

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