在注册页面我有错误
“C# .net ExecuteNonQuery：CommandText 属性尚未初始化”
但是，如果我在注册页面上对“cmd.ExecuteNonQuery”发表评论，则此错误会转到登录页面。我无法在此注册和登录。
登录页面：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Security;
using System.Web.Security;
public partial class Login : System.Web.UI.Page
{
//SqlConnection con = new SqlConnection("Data Source=LENOVO;Initial Catalog=Onl9Shopping;Persist Security Info=True;User ID=sa;Password=123");
SqlConnection con = new SqlConnection("Data Source=localhost;Initial Catalog=Onl9Shopping;Trusted_Connection=Yes;;Pooling=False");
protected void Page_Load(object sender, EventArgs e)
{
}
protected void ImageButton4_Click(object sender, ImageClickEventArgs e)
{
SqlCommand cmd = new SqlCommand();
cmd.CommandText="checksecurity ";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Connection = con;
con.Open();
cmd.Parameters.AddWithValue("@username", Txtusername.Text);
cmd.Parameters.AddWithValue("@password", Txtpassword.Text);
SqlParameter p1 = new SqlParameter("@ret", SqlDbType.Int);
p1.Direction = ParameterDirection.ReturnValue;
cmd.Parameters.Add(p1);
SqlParameter p2 = new SqlParameter("@status", SqlDbType.VarChar, 50);
p2.Direction = ParameterDirection.Output;
cmd.Parameters.Add(p2);
SqlParameter p3 = new SqlParameter("@name", SqlDbType.VarChar, 50);
p3.Direction = ParameterDirection.Output;
cmd.Parameters.Add(p3);
cmd.ExecuteNonQuery();
int r = Convert.ToInt16(cmd.Parameters["@ret"].Value);
string status = cmd.Parameters["@status"].Value.ToString();
string loggedname = cmd.Parameters["@name"].Value.ToString();
if (r == -1)
{
Label1.Text = "Wrong Username";
}
else if (r == -2)
{
Label1.Text = "wrong Password";
}
else
{
Session["name"] = loggedname;
FormsAuthenticationTicket tk = new FormsAuthenticationTicket(1, Txtusername.Text, DateTime.Now, DateTime.Now.AddHours(2), false, status);
string s = FormsAuthentication.Encrypt(tk);
HttpCookie ck = new HttpCookie(FormsAuthentication.FormsCookieName,s);
Response.Cookies.Add(ck);
Response.Redirect("Welcome.aspx");
}
Label1.Visible = true;
}
}
注册页面：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
public partial class Registartion : System.Web.UI.Page
{
SqlConnection con = new SqlConnection("Data Source=localhost;Initial Catalog=Onl9Shopping;Trusted_Connection=Yes");
protected void Page_Load(object sender, EventArgs e)
{
}
private void getregno()
{
string query = "select max (registrationno) from register";
SqlDataAdapter adp = new SqlDataAdapter(query, con);
DataSet ds = new DataSet();
adp.Fill(ds);
Txtreg.Text = (Convert.ToInt16(ds.Tables[0].Rows[0][0]) + Convert.ToInt16(1)).ToString();
}
protected void btncheck_Click(object sender, EventArgs e)
{
string query = "select username from register";
SqlDataAdapter adp = new SqlDataAdapter(query, con);
DataSet ds = new DataSet();
adp.Fill(ds);
int b = 0;
int c = 0;
int a = 0;
a = ds.Tables[0].Rows.Count;
while (a > b)
{
if (ds.Tables[0].Rows[b][0].ToString().Equals(TxtUserName.Text))
{
c = 1;
}
b++;
}
if (c == 1)
{
Label1.Text = "Name already exist !!..";
}
else
{
Label1.Text = "Name available";
}
Label1.Visible=true;
}
protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
string query = "select username from register";
SqlDataAdapter adp = new SqlDataAdapter(query, con);
DataSet ds = new DataSet();
adp.Fill(ds);
int b = 0;
int c = 0;
int a = 0;
a = ds.Tables[0].Rows.Count;
while (a > b)
{
if (ds.Tables[0].Rows[b][0].ToString().Equals(TxtUserName.Text))
{
c = 1;
}
b++;
}
if (c == 1)
{
Label1.Text = "Name already exist !!..";
}
else
{
SqlCommand cmd = new SqlCommand();
string query1 = "Insert into register(Name,FatherName,Gender,Address,Country,State,City,Pin,Phn,Email,Username,Password,SecurityQuestion,Hint)values(@Name,@Fathername,@Gender,@Address,@Country,@State,@City,@Pin,@Phn,@Email,@Username,@Password,@SecurityQuestion,@Hint)";
cmd.CommandText = query1;
cmd.Connection = con;
con.Open();
cmd.Parameters.AddWithValue("@Name", Txtname.Text);
cmd.Parameters.AddWithValue("@FatherName", Txtfname.Text);
cmd.Parameters.AddWithValue("@Gender", DropDownList1.Text);
cmd.Parameters.AddWithValue("@Address", Txtaddress.Text);
cmd.Parameters.AddWithValue("@Country", Txtcountry.Text);
cmd.Parameters.AddWithValue("@State", Txtstate.Text);
cmd.Parameters.AddWithValue("@City", Txtcity.Text);
cmd.Parameters.AddWithValue("@Pin", Txtpin.Text);
cmd.Parameters.AddWithValue("@Phn", Txtphn.Text);
cmd.Parameters.AddWithValue("@Email", Txtemail.Text);
cmd.Parameters.AddWithValue("@Username", TxtUserName.Text);
cmd.Parameters.AddWithValue("@Password", Txtpassword.Text);
cmd.Parameters.AddWithValue("@SecurityQuestion", DropDownList2.Text);
cmd.Parameters.AddWithValue("@Hint", Txthint.Text);
cmd.ExecuteNonQuery();
cmd.Dispose();
con.Close();
Txtname.Text = string.Empty;
Txtfname.Text = string.Empty;
Txtaddress.Text = string.Empty;
Txtcountry.Text = string.Empty;
Txtstate.Text = string.Empty;
Txtcity.Text = string.Empty;
Txtpin.Text = string.Empty;
Txtphn.Text = string.Empty;
Txtemail.Text = string.Empty;
TxtUserName.Text = string.Empty;
Txtpassword.Text = string.Empty;
Txtaddress.Text = string.Empty;
Txthint.Text = string.Empty;
Label2.Text = "Data sumitted ";
Label2.Visible = true;
}
}
}