c# - How to format a string as currency

String to currency
string-to-currency.aspx

<%@ Page Language="C#" AutoEventWireup="true"%>
  
<!DOCTYPE html>    
<script runat="server">  
    protected void Button1_Click(object sender, System.EventArgs e)  
    {  
        //this section create a string variable.  
        string stringOfDecimal = "125.25";

        Label1.Text = "string of decimal..................<br />";
        Label1.Text += stringOfDecimal;

        //this line convert string to decimal.
        decimal d = Convert.ToDecimal(stringOfDecimal);

        Label1.Text += "<br /><br />string format as currency.........<br />";
        Label1.Text += string.Format("{0:c}", d);

        Label1.Text += "<br /><br />string format currency plus 10.........<br />";
        Label1.Text += string.Format("{0:c}", d+10);
    }    
</script>    
    
<html xmlns="http://www.w3.org/1999/xhtml">    
<head id="Head1" runat="server">    
    <title>c# example - string to currency</title>    
</head>    
<body>    
    <form id="form1" runat="server">    
    <div>    
        <h2 style="color:MidnightBlue; font-style:italic;">    
            c# example - string to currency
        </h2>    
        <hr width="550" align="left" color="Gainsboro" />    
        <asp:Label     
            ID="Label1"     
            runat="server"    
            Font-Size="Large"  
            >    
        </asp:Label>    
        <br /><br />  
        <asp:Button     
            ID="Button1"     
            runat="server"     
            Text="string to currency"    
            OnClick="Button1_Click"  
            Height="40"    
            Font-Bold="true"    
            />    
    </div>    
    </form>    
</body>    
</html>
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