protected void ImageButton1_Click5(object sender, ImageClickEventArgs e) { int chkusers; string loginemailid, password; loginemailid = txtusername.Text.Trim(); password = txtpw.Text.Trim(); Session["username"] = loginemailid; Session["password"] = password; cn.Open(); SqlCommand cmd = new SqlCommand("select loginemailid,password from tbl_register where loginemailid='" + txtusername.Text + "' and password='" + txtpw.Text + "'", cn); SqlDataReader dr = cmd.ExecuteReader(); if (dr.HasRows) { while (dr.Read()) { loginemailid = dr["loginemailid"].ToString(); password = dr["password"].ToString(); string userid = Request.QueryString["ids"]; Session["userid"] = userid.ToString(); Response.Redirect("Home.aspx?ids=" + userid); } dr.Close(); } else { lblmsg.Text = "Invalid Username and Password"; } }
string userid = Request.QueryString["ids"]; Session["userid"] = userid.ToString(); userid might be null here use Session["userid"] =Convert.ToString(userid)
var
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