SqlRoleProvider.GetAllRoles Method ()
Gets a list of all the roles for the application.
Assembly: System.Web (in System.Web.dll)
Return Value
Type: System.String()A string array containing the names of all the roles stored in the database for a particular application.
| Exception | Condition |
|---|---|
| System.Configuration.Provider.ProviderException | An unknown error occurred while communicating with the database. |
The GetAllRoles method is called by the Roles class to retrieve a list of all the roles in the SQL Server database specified in the ASP.NET application's configuration file (Web.config).
The following code example uses the GetAllRoles method to get the list of roles for an application and bind the results to a System.Web.UI.WebControls.GridView control. For an example of a Web.config file that enables role management, see SqlRoleProvider.
Security Note
|
|---|
This example contains a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview. |
<%@ Page Language="VB" %> <%@ Import Namespace="System.Web.Security" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> Dim rolesArray() As String Public Sub Page_Load(sender As Object, args As EventArgs) If Not IsPostBack Then ' Bind roles to GridView. rolesArray = Roles.GetAllRoles() RolesGrid.DataSource = rolesArray RolesGrid.DataBind() End If End Sub Public Sub CreateRole_OnClick(sender As Object, args As EventArgs) Dim createRole As String = RoleTextBox.Text Try If Roles.RoleExists(createRole) Then Msg.Text = "Role '" & Server.HtmlEncode(createRole) & "' already exists. Please specify a different role name." Return End If Roles.CreateRole(createRole) Msg.Text = "Role '" & Server.HtmlEncode(createRole) & "' created." ' Re-bind roles to GridView. rolesArray = Roles.GetAllRoles() RolesGrid.DataSource = rolesArray RolesGrid.DataBind() Catch Msg.Text = "Role '" & Server.HtmlEncode(createRole) & "' <u>not</u> created." End Try End Sub </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <title>Sample: Create Role</title> </head> <body> <form runat="server" id="PageForm"> <h3>Create a Role</h3> <asp:Label id="Msg" ForeColor="maroon" runat="server" /><br /> Role name: <asp:TextBox id="RoleTextBox" runat="server" /> <asp:Button Text="Create Role" id="CreateRoleButton" runat="server" OnClick="CreateRole_OnClick" /> <br /> <asp:GridView runat="server" CellPadding="2" id="RolesGrid" Gridlines="Both" CellSpacing="2" AutoGenerateColumns="false" > <HeaderStyle BackColor="navy" ForeColor="white" /> <Columns> <asp:TemplateField HeaderText="Roles" > <ItemTemplate> <%# Container.DataItem.ToString() %> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> </form> </body> </html>
Available since 2.0
.jpeg?cs-save-lang=1&cs-lang=vb)