insert into a data directlty into gridview

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ASP.NET

i create a form,after filling the form,the form details can be directly save into gridview .Then after again submit the form details then before details can be deleted.so please help me
i have written code as below

NAME:
ADDRESS:
CITY:
STATE:
CONTACT NO:
EMAIL:
COMMENTS:
RESUME:

file upload control been here

if (FileUpload1.HasFile)
{
    FileUpload1.PostedFile.SaveAs(Server.MapPath("~/data/") + FileUpload1.FileName);
}
DataTable dt = new DataTable();

    dt.Columns.Add("resume", typeof(string));
    dt.Columns.Add("name", typeof(string));
    dt.Columns.Add("address", typeof(string));
    dt.Columns.Add("city", typeof(string));
    dt.Columns.Add("state", typeof(string));
    dt.Columns.Add("contactno", typeof(string));
    dt.Columns.Add("email", typeof(string));
    dt.Columns.Add("comment", typeof(string));
    //foreach (string strfile in Directory.GetFiles(Server.MapPath("~/data")))
    //{
    //    FileInfo fi = new FileInfo(strfile);

    dt.Rows.Add(FileUpload1.FileName, TextBox1.Text, TextBox2.Text, TextBox3.Text, TextBox4.Text, TextBox5.Text, TextBox6.Text, TextBox7.Text);


//}
GridView1.DataSource = dt;

GridView1.DataBind();