MSSQL问题。

打开数据库软件查询信息提示以下错误：

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.Data.SqlClient.SqlException: 无法打开登录 'lysoft' 中请求的数据库。登录失败。
用户 'sa' 登录失败。
   at System.Data.SqlClient.ConnectionPool.GetConnection(Boolean& isInTransaction)
   at System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnectionString options, Boolean& isInTransaction)
   at System.Data.SqlClient.SqlConnection.Open()
   at Notepad.Object.Clinic.ClinicCharge.Select(String SearchType, String SendMed, String BeginDate, String EndDate, String Num, String CardID, String KAunit, String DoctorID, String Name, String OfficeID, String Square, String Manager, String Cancellation, String Collect, String Datetime)
   at Notepad.Winform.Clinic.frmChargeSearch.SearchData()
   at Notepad.Winform.Clinic.frmChargeSearch.toolBar1_ButtonClick(Object sender, ToolBarButtonClickEventArgs e)
   at System.Windows.Forms.ToolBar.OnButtonClick(ToolBarButtonClickEventArgs e)
   at System.Windows.Forms.ToolBar.WmReflectCommand(Message& m)
   at System.Windows.Forms.ToolBar.WndProc(Message& m)
   at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
    Assembly Version: 1.0.5000.0
    Win32 Version: 1.1.4322.573
    CodeBase: file:///c:/windows/microsoft.net/framework/v1.1.4322/mscorlib.dll
----------------------------------------
医院管理信息系统
    Assembly Version: 1.0.3351.17294
    Win32 Version: 1.0.3351.17294
    CodeBase: file:///E:/重庆耀福科技有限公司/HIS/Debug/医院管理信息系统.exe
----------------------------------------
System.Windows.Forms
    Assembly Version: 1.0.5000.0
    Win32 Version: 1.1.4322.573
    CodeBase: file:///c:/windows/assembly/gac/system.windows.forms/1.0.5000.0__b77a5c561934e089/system.windows.forms.dll

System.Data.SqlClient.SqlException: 无法打开登录 'lysoft' 中请求的数据库。登录失败。
用户 'sa' 登录失败。

说明帐号密码不对，再仔细对下，还有设置到windows与sql模式登录