{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            talonary talonaryobj = new talonary(txtname.Text, txtlastname.Text,double.Parse(txtSalary.Text));
 
            lsttalonary.Items.Add(talonaryobj.name);
            lsttalonary.Items.Add(talonaryobj.lastname);
 
 
     lsttalonary.Items.Add(talonaryobj.calculateSalary); ******LINEA DEL ERROR
 
 
 
 
        }
 
namespace practice1
{
   public class talonary
    {
       public string name;
       public string lastname;
       public double salary;
 
       public talonary(string n, string ln, double s)
       {
           this.name = n;
           this.lastname = ln;
           this.salary = s;
       }
 
       public string calculateSalary(double s)
       {
           s = s - (s * 0.05);                                     ****POSIBLE ERROR
           return s.ToString();
       }
    }
}
 
 
 
 
 

 private void button1_Click(object sender, EventArgs e)
        {
            talonary talonaryobj = new talonary();
 
            lsttalonary.Items.Add(talonaryobj.name);
            lsttalonary.Items.Add(talonaryobj.lastname);
            lsttalonary.Items.Add(talonaryobj.salary);
 
 
 
 
        }
 
 

public class talonary
    {
       public string name;
       public string lastname;
       public double salary;
 
 
       public talonary(string name,string lastname,double salary)
       {
           this.name = name;
           this.lastname = lastname;
           this.salary = salary;
       }
 
      double descSalary()
       {
           double salary = 0;
           salary = (salary * 0.05) - salary;
           return salary;
 
       }
 
 

<asp:SqlDataSource ID="Usuarios"runat="server"
    ConnectionString="Data Source=|DataDirectory|\DB.mdf"
    ProviderName="System.Data.SqlServerCe.4.0"
    SelectCommand="SELECT [id],[Nombre],[apellido],[username]
    FROM [Usuarios]">
 
</asp:SqlDataSource>

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. 

Parser Error Message: The server tag is not well formed.

Source Error: 


Line 4:  <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
Line 5:  
Line 6:  <asp:SqlDataSource ID="Usuarios"runat="server"
Line 7:      ConnectionString="Data Source=|DataDirectory|\DB.mdf"
Line 8:      ProviderName="System.Data.SqlServerCe.4.0"

Source File: /app/usuarios.aspx    Line: 6