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I have used the credential tag in web.config file to authenticate my admin. now I want to know is there any way to make a page with a form for admin to change his username and password? this is my code in web.config:
    <compilation debug="true" targetFramework="4.0" />
    <sessionState cookieless="AutoDetect" mode="InProc"  timeout="114400">
    <authentication mode="Forms">
        <forms timeout="1440" loginUrl="~/entrance_before_paying.aspx" defaultUrl="Admin/Default.aspx" name=".ASPXFORMSDEMO"  cookieless="AutoDetect" protection="All">
            <credentials passwordFormat="Clear">
                <user name=""  password="elmira" />
I used this code in my sign in page to check if the user is admin or not:
 private void enter()
    if (FormsAuthentication.Authenticate(TextBox1.Text.Trim(), TextBox2.Text.Trim()))
        FormsAuthentication.RedirectFromLoginPage("admin user name in credential tag", true);
       // enter as a user}
Posted 12-Feb-13 4:17am
Edited 13-Feb-13 0:29am

1 solution

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Solution 1

<form ID="form1"  runat="server">
        <asp:TextBox ID="txtUsername" runat="server">
protected void btnWrite_Click(object sender, EventArgs e)
        Configuration webconfig = WebConfigurationManager.OpenWebConfiguration("~");
        SystemWebSectionGroup sysweb = (SystemWebSectionGroup)webconfig.GetSectionGroup("system.web");
        AuthenticationSection authSection = sysweb.Authentication;
        FormsAuthenticationUserCollection users = authSection.Forms.Credentials.Users;
        FormsAuthenticationUser user = users[0];
        user.Name = txtUsername.Text;
        user.Password = txtPassword.Text;
Note: Make sure to grant write permissions to web.config file and its parent folders otherwise you will get an exception "
System.InvalidOperationException: ConfigurationSection properties cannot be edited when locked

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