Помогите разобратьса,вроде должно работать а нехочет и ругаетса.
Зарание спасибо!!!
Вот код:

V aspx.cs:

private void Page_Load(object sender, System.EventArgs e)
{
dbconnectUser = new SqlConnection("workstation id=HOME-630FDA66BC;packet size=4096;integrated security=SSPI;data source=HOME-630FDA66BC;persist security info=False;initial catalog=SourceCodeP2P");
}

private void btnSubmit_Click(object sender, System.EventArgs e)
{// Authenticate username/password from
if(CheckPassword(txtUserName.Text,txtPassword.Text))
// If found, display the application's Start page.
FormsAuthentication.RedirectFromLoginPage(txtUserName.Text,true);
else
{
// Otherwise, clear the password.
txtPassword.Text = "";
// Display message.
spnNote.InnerText = "User name or password not found.Please, Try again.";
// If third try, display "Access Denied" page.
if (System.Convert.ToInt32(ViewState["Tries"]) > 1)
Response.Redirect("Denied.htm");
else
{
// Otherwise, increment number of tries.
ViewState["Tries"] = System.Convert.ToInt32(ViewState["Tries"]) + 1;
if (System.Convert.ToInt32(ViewState["Tries"]) > 3)
Response.Redirect("Denied.htm");
}
}

}

private void btnClier_Click(object sender, System.EventArgs e)
{
this.txtPassword.Text = "";
this.txtUserName.Text = "";
}

private void btnNewUser_Click(object sender, System.EventArgs e)
{
if (AddUser(txtUserName.Text, txtPassword.Text))
spnNote.InnerText = "User added.";
else
spnNote.InnerText = "User exists. Choose a different user name.";
}

private bool AddUser(string userName, string password)
{
// Declare variable to track success/failure.
bool bSuccess = false;
// Encrypt the password.
password = FormsAuthentication.HashPasswordForStoringInConfigFile(password,"SHA1");
// Create command to insert user name and password.
SqlCommand sqlCommand = new SqlCommand("INSERT INTO Users" +
" VALUES('" + userName + "', '" + password + "')", dbconnectUser);
// Catch errors in case record already exists.
try
{
// Open the database connection.
dbconnectUser.Open();
// If record added, set success to true.
if (sqlCommand.ExecuteNonQuery()!= 0)
{
bSuccess = true;
// Close connection.
dbconnectUser.Close();
}
}
catch
{
// Otherwise, success if false.
bSuccess = false;
// Close connection.
dbconnectUser.Close();
}
// Return success/failure.
return bSuccess;
}

private bool CheckPassword(string userName, string password)
{
// Declare variable to track success/failure.
bool bSuccess = false;
// Encrypt the password.
password = FormsAuthentication.HashPasswordForStoringInConfigFile(password, "SHA1");
// Create command to get row from users table based on UserName.
SqlCommand sqlCommand = new SqlCommand("SELECT * FROM Users" +
" WHERE userName='" + txtUserName.Text + "'", dbconnectUser);
// Check for errors using database
try
{
// Open the database connection.
dbconnectUser.Open();
// Get the author ID.
SqlDataReader drUsers = sqlCommand.ExecuteReader();
while (drUsers.Read())
{
if (password == drUsers["password"].ToString())
bSuccess = true;
}
// Close connection.
dbconnectUser.Close();
}
catch
{
// Otherwise set failure.
bSuccess = false;
// Close connection.
dbconnectUser.Close();
}
return bSuccess;
}

}
}

V Web.config:

<authentication mode="Forms" >
<!--<forms registrUrl="registration.aspx" > <!-- Specify a log on form -->
<credentials passwordFormat="SHA1"> <!-- Create a user list -->
<user name="Admin" password="Admin"/>

</credentials
</forms> -->
</authentication>

Pomogite plizzzzzzzzzzzzz ochen nujno!!!!!!!

Pishet chto <forms Registr....--Unrecognized attribute,
a kak doljno bit ya neznayu,ya novichok

Ogromnoe spasibo.Vse forma zarabotala,teper kod nexochet rabotat,mojet i v etom pomojesh.Zaranie spasibo!!!

Oshibku ne kakuyu ne pokazivaet.No v forme kogda vnoshu userName i Password pishet chto...koroche pishet chto username ili password ne nayden a u menya sovsem DB pustaya.Znachit gdeto est problemma.Mojet pomojesh nayti,Zaranie bolshoe spasibo!!!

<authentication mode="Windows" >
<forms loginUrl="registration.aspx"
protection="All"
timeout="30" path="/">
requireSSL="true|false">
<credentials passwordFormat="SHA1">
<user name="Admin" password="Admin"/>
</credentials>
</forms>
<passport redirectUrl="internal"/>
</authentication>

с уважением...

Profil bolshoe spasibo za obaldennuyu silochku.Bolshoe spasibo!!!