我有一个ASP.NET MVC应用程序,其中数据库位于IBM i-Series服务器上。当我开始出现The ConnectionString property is invalid.
错误时,我的应用程序开发接近完成:
另请注意,此问题仅显示在我的解决方案中的一个项目。另一个项目使用完全相同的连接字符串,并没有这个问题(复制和粘贴是100%肯定)。我正在积极开发这些项目,但是在登录工作之后没有触及连接字符串,也没有使用AccountController
和相关的模型类。
我使用的是Visual Studio 2008和.NET 3.5版。
连接字符串:
<connectionStrings>
<add name="IbmIConnectionString" connectionString="DataSource=192.168.50.200;DefaultCollection=QMFILES;Naming=sql;UserID=XXX;Password=XXXX;"/>
</connectionStrings>
帐户控制器登录方法:
[HttpPost]
public ActionResult LogOn(LogOnModel model, string returnUrl)
{
string fullName = String.Empty;
string employeeId = String.Empty;
if (ModelState.IsValid)
{
if (MembershipService.ValidateUser(model.UserName, model.Password))
{
FormsService.SignIn(model.UserName, model.RememberMe);
EmployeeLoginModel elm = new EmployeeLoginModel();
elm.GetUserInfo(model.UserName, model.Password, out fullName, out employeeId);
// Update the AuthCookie to include the last 4 digits of the SSN.
string userDataString = String.Format("{0}|{1}|{2}", model.Password, fullName.Trim(), employeeId.Trim());
HttpCookie authCookie = FormsAuthentication.GetAuthCookie(model.UserName, model.RememberMe);
FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(authCookie.Value);
FormsAuthenticationTicket newTicket = new FormsAuthenticationTicket(ticket.Version, ticket.Name, ticket.IssueDate, ticket.Expiration, ticket.IsPersistent, userDataString);
authCookie.Value = FormsAuthentication.Encrypt(newTicket);
Response.Cookies.Add(authCookie);
if (!String.IsNullOrEmpty(returnUrl))
{
return Redirect(returnUrl);
}
else
{
return RedirectToAction("Index", "Home");
}
}
else
{
ModelState.AddModelError("", "The user name or password provided is incorrect.");
}
}
// If we got this far, something failed, redisplay form
return View(model);
}
员工登录模式:
public class EmployeeLoginModel
{
public string UserName { set; get; }
public string Password { set; get; }
private iDB2Connection conn;
/// <summary>
/// Initializes a new instance of the <see cref="EmployeeLoginModel"/> class.
/// </summary>
public EmployeeLoginModel()
{
conn = new iDB2Connection(ConfigurationManager.ConnectionStrings["IbmIConnectionString"].ConnectionString);
}
/// <summary>
/// Determines whether [is valid user] [the specified username].
/// </summary>
/// <param name="username">The username.</param>
/// <param name="password">The password.</param>
/// <returns>
/// <c>true</c> if [is valid user] [the specified username]; otherwise, <c>false</c>.
/// </returns>
public bool IsValidUser(string username, string password)
{
int count = 0;
// Get the data from the iSeries
using (conn)
{
string sqlStatement = "SELECT COUNT(XXXXX) FROM XXXXX WHERE UPPER(XXXXXX) = @1 AND XXXXXX = @2";
iDB2Command cmd = new iDB2Command(sqlStatement, conn);
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add("@1", username.ToUpper());
cmd.Parameters.Add("@2", password);
conn.Open();
count = (Int32)cmd.ExecuteScalar();
conn.Close();
}
return ((count == 0) ? false : true);
}
答案 0 :(得分:3)
获得此错误的另一个非常重要的原因是,未安装所需的DB2驱动程序。
内部异常陈述
无法加载DLL'cwbdc.dll':找不到指定的模块。 (来自HRESULT的异常:0x8007007E) 键入:System.DllNotFoundException
答案 1 :(得分:2)
发布后,我有一个理论。我在浏览器之间切换为演示设置了东西。我把方法改为:
public bool IsValidUser(string username, string password)
{
int count = 0;
// Get the data from the iSeries
using (iDB2Connection conn = new iDB2Connection(ConfigurationManager.ConnectionStrings["IbmIConnectionString"].ConnectionString))
{
string sqlStatement = "SELECT COUNT(XXXXXX) FROM XXXXXX WHERE UPPER(XXXXXX) = @1 AND XXXXXX = @2";
iDB2Command cmd = new iDB2Command(sqlStatement, conn);
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add("@1", username.ToUpper());
cmd.Parameters.Add("@2", password);
conn.Open();
count = (Int32)cmd.ExecuteScalar();
conn.Close();
}
return ((count == 0) ? false : true);
}
现在似乎正在运作。我想知道这是不是问题。
答案 2 :(得分:1)
我认为因为你使用了using语句之外的连接,所以在转到其他函数后它会被关闭,所以当你调用IsValidUser时,它会抛出异常。在第二个代码中,您在using语句中使用它,在调用之后它将被Garbage Collection释放。这是工作。