In this post CommentBox in Asp.Net

Important Namespaces Used
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using System.Data;
using System.Data.SqlClient;

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Submit Button Click Event
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        String dateofcomment;
        dateofcomment = DateTime.Now.ToLongDateString().ToString();
        String query = "insert into commentdetail(visitorname,email,comment,dateofcomment) values('" + TextBox1.Text + "','" +            TextBox2.Text + "','" + TextBox3.Text + "','" + dateofcomment + "')";
        String mycon = "Data Source=sk-pc; Initial Catalog=CommentBox; Integrated Security=true";
        SqlConnection con = new SqlConnection(mycon);
        con.Open();
        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = query;
        cmd.Connection = con;
        cmd.ExecuteNonQuery();
        DataList1.DataBind();
        Label6.Text = "Thanks For Giving Feedback as Comment on Website";

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