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Here i will explain that how to use checkBox and Redio Button in window form when we insert data into database.
Step(1):Form
Drag and down two redio button for male and female. You can see my tutorial 6 that how to insert data into database.
Step(2):Code
Coding is same as tutorial 6 only difference is for redio button.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace First_Csharp_app
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
String gender;                                                              //we have to define this
        private void button1_Click(object sender, EventArgs e)
        {
           SqlConnection con = new SqlConnection(str);
                String str = "server=MUNESH-PC;database=windowapp;UID=sa;password=123";
                String query = "insert into data (E.id,name,surname,age,gender) values ('"+this.eid_txt.text+"','"+this.nametxt.text+"','"+this.surname_txt.text+"','"+this.age_txt.text+"' , '"+this.gender+"')";
     SqlCommand cmd = new sqComamnd(query,con);         
SqlDataReader dbr;
SqlDataReader dbr;
try
{
con.open();
               dbr = cmd.ExecuteReader();
MessageBox.Show("saved");
while(dbr.read())
{
                 
}
MessageBox.Show("saved");
while(dbr.read())
{
}
            }
            catch (Exception es)
            {
                MessageBox.Show(es.Message);
            }
        }
private void rediobutton1.checked(object sender, EventArgs e)
{
gender = "male";
}
private void rediobutton1.checked(object sender, EventArgs e)
{
gender = "female";
}
    }
} 
//You can do this for check box.



Good tutorials.....
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