Howto display data in grid view

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i am new to .net .in my project i have one button and one text box in which the user can enter his booking id when he click button i want to display the particular row in grid view my code to search the result is given below.

What I have tried:

C#

 protected void Button1_Click(object sender, EventArgs e)
        {
 string cs = ConfigurationManager.ConnectionStrings["connectionString"].ConnectionString;
            using (SqlConnection con = new SqlConnection(cs))
            {
                
                con.Open();
                SqlCommand cmd = new SqlCommand("select * from [booking] where [BookingId]='" + TextBox1.Text + "'", con);
                SqlDataAdapter da = new SqlDataAdapter(cmd);
                DataTable dt = new DataTable();
                da.Fill(dt);
                if (dt.Rows.Count == 1)
                {
                   
                    
                } 
                else
                {
                    Response.Write("&alert;script>alert('this not valid booking id')&alert;/script>");
                }
              
                }
}

Posted 18-Feb-16 5:14am

Member 12336561

Updated 22-Feb-16 9:54am

Chris Maunder773.1K

v2

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Aria Jafarian · Answer 1 · 2016-02-18T05:52:00

C#

string bookingId = TextBox1.Text; 
string connString = ConfigurationManager.ConnectionStrings["connectionString"].ConnectionString;
    using (SqlConnection con = new SqlConnection(connString))
    {
        using (SqlCommand cmd = new SqlCommand())
        {
            cmd.CommandText = "select * from booking where BookingId = @BookingId";
            cmd.Parameters.AddWithValue("@BookingId", bookingId)
            cmd.Connection = con;
            con.Open();
            GridView1.DataSource = cmd.ExecuteReader();
            GridView1.DataBind();
            con.Close();
        }
    }

Don't ever pass a value from your UI directly to your query.(To prevent Sql injection)

**Alaa Ben Fatma** · Answer 2 · 2016-02-22T09:54:00

Solution 2

Hello.
This article & sample might help you :
SQL browser[^]

Posted 22-Feb-16 9:54am

Alaa Ben Fatma