private void Delete_Click(object sender, EventArgs e)
{
IngresConnection con = new IngresConnection(Login.myConnectionString);
con.Open();
IngresCommand cmd = new IngresCommand();
cmd.Connection = con;
cmd.CommandText = "rol_delete";
cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.Parameters.Add(new IngresParameter("t_id_rol", IngresType.Decimal));
cmd.Parameters["t_id_rol"].Value = int.Parse(this.metroTextBox1.Text);
IngresTransaction trans = con.BeginTransaction();
cmd.Transaction = trans;
try
{
cmd.ExecuteNonQuery();
trans.Commit();
MetroMessageBox.Show(this, "Elemento eliminado correctamente.", "Nota", MessageBoxButtons.OK, MessageBoxIcon.Question);
}
catch (IngresException c)
{
MetroMessageBox.Show(this, c.ErrorCode + c.Message, "Error");
}
con.Close();
this.read();
}
/// <summary>
/// This method takes a role name and determines whether the role exists.
/// </summary>
/// <remarks>
/// This method overrides a method from the <c>System.Web.Security.RoleProvider</c> class to provide an Ingres
/// specific implementation.
/// </remarks>
/// <param name="roleName">Role name to check the existence of.</param>
/// <returns>Whether the given role exists.</returns>
public override bool RoleExists(string roleName)
{
bool result = false;
IngresTransaction tran = null;
try
{
using (IngresConnection conn = new IngresConnection(this.config.ConnectionString))
{
// Open the connection and start a new transaction
conn.Open();
tran = conn.BeginTransaction();
// Call the implementation of the method
result = this.GetHandler(conn, tran).RoleExists(roleName);
// Commit the transaction
tran.Commit();
}
}
catch (Exception ex)
{
// Attempt to rollback
try
{
if (tran != null && tran.Connection != null)
{
tran.Rollback();
}
}
catch
{
// Add the rollback error.
ExceptionHandler.LogRollbackWarning(RoleProviderMethod.RoleExists);
}
// Handle the exception appropriately
ExceptionHandler.HandleException(ex, RoleProviderMethod.RoleExists);
}
return(result);
}
/// <summary>
/// Takes an array of user names and an array of role names and removes the specified users
/// from the specified roles.
/// </summary>
/// <remarks>
/// <para>
/// <c>RemoveUsersFromRoles</c> throws a <c>ProviderException</c> if any of the users or roles do not
/// exist, or if any user specified in the call does not belong to the role from which he
/// or she is being removed.
/// </para>
/// <para>
/// This method overrides a method from the <c>System.Web.Security.RoleProvider</c> class to provide an Ingres
/// specific implementation.
/// </para>
/// </remarks>
/// <param name="usernames">The array of usernames.</param>
/// <param name="roleNames">The array of roles.</param>
public override void RemoveUsersFromRoles(string[] usernames, string[] roleNames)
{
IngresTransaction tran = null;
try
{
using (IngresConnection conn = new IngresConnection(this.config.ConnectionString))
{
// Open the connection and start a new transaction
conn.Open();
tran = conn.BeginTransaction();
// Call the implementation of the method
this.GetHandler(conn, tran).RemoveUsersFromRoles(usernames, roleNames);
// Commit the transaction
tran.Commit();
}
}
catch (Exception ex)
{
// Attempt to rollback
try
{
if (tran != null && tran.Connection != null)
{
tran.Rollback();
}
}
catch
{
// Add the rollback error.
ExceptionHandler.LogRollbackWarning(RoleProviderMethod.RemoveUsersFromRoles);
}
// Handle the exception appropriately
ExceptionHandler.HandleException(ex, RoleProviderMethod.RemoveUsersFromRoles);
}
}