delete image from folder as like database

Question

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

string id = Request.QueryString["id"].ToString();

string photo = Request.QueryString["image1"].ToString();

imgdltdata(id,photo);

}

}

private void imgdltdata(string id, string photo)

{

string qry = "delete from appformtbl where id=" + id + " photo=" + photo + "";

{

string filePath = Server.MapPath("~/Rimage/" + "image1.FileName");

if (System.IO.File.Exists(filePath))

{

System.IO.File.Delete(filePath);

}

}

}

 

my problem:- if i do edit operation and edit image then delete old image from folder and update new image..... i write some code but proble is that when i use breakpoint then string photo got null value there is not coming any value....

 

plz someone help me ... thanking you