Error	1	No overload for method 'FillByEmployeeID' takes '2' arguments	
Error	2	No overload for method 'FillBylastName' takes '2' arguments
Error	3	No overload for method 'FillBySalary' takes '2' arguments

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace HUIDB
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void employeeBindingNavigatorSaveItem_Click(object sender, EventArgs e)
        {
            this.Validate();
            this.employeeBindingSource.EndEdit();
            this.employeeTableAdapter.Update(this.dataSet1.Employee);

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'dataSet1.Employee' table. You can move, or remove it, as needed.
            this.employeeTableAdapter.Fill(this.dataSet1.Employee);

        }

       
        private void ADD_Click(object sender, EventArgs e)
        {
            String EmployeeID = textBox1.Text;
            String firstName = textBox2.Text;
            String lastName = textBox3.Text;
            String phoneNumber = textBox4.Text;
            int Salary = Int32.Parse(textBox5.Text);
            employeeTableAdapter.Fill(this.dataSet1.Employee);
        }

        private void DELETE_Click(object sender, EventArgs e)
        {
            String EmployeeID = textBox1.Text;
            if (this.employeeTableAdapter.Delete(EmployeeID) == 0)
                MessageBox.Show("Deletion failed");
            else
                this.employeeTableAdapter.Fill(this.dataSet1.Employee);
        }

        private void UPDATE_Click(object sender, EventArgs e)
        {
            String EmployeeID = textBox1.Text;
            String firstName = textBox2.Text;
            String lastName = textBox3.Text;
            String phoneNumber = textBox4.Text;
            int Salary = Int32.Parse(textBox5.Text);
            if (this.employeeTableAdapter.Update(EmployeeID, firstName, lastName, phoneNumber,Salary, EmployeeID) == 0)
                MessageBox.Show("Update failed");
            else
                this.employeeTableAdapter.Fill(this.dataSet1.Employee);
        }

        private void FIND_Click(object sender, EventArgs e)
        {
            String EmployeeID = textBox1.Text;
            String lastName = textBox3.Text;
            int Salary = Int32.Parse(textBox5.Text);
            this.employeeTableAdapter.FillByEmployeeID(dataSet1.Employee, EmployeeID); // wrong here
            this.employeeTableAdapter.FillBylastName(dataSet1.Employee, lastName); // wrong here
            this.employeeTableAdapter.FillBySalary(dataSet1.Employee, Salary); // wrong here
        }

        private void REFRESH_Click(object sender, EventArgs e)
        {
            this.employeeTableAdapter.Fill(this.dataSet1.Employee);
        }
    }
}

SELECT EmployeeID,firstName,lastName,phoneNumber,Salary
FROM Employee
WHERE (EmployeeID='005')

SELECT EmployeeID,firstName,lastName,phoneNumber,Salary
FROM Employee
WHERE (lastName='Tart')

SELECT EmployeeID,firstName,lastName,phoneNumber,Salary
FROM Employee
WHERE (Salary >= 25000) AND (Salary < 70000)