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Server Error in '/' Application.

Login failed for user 'sa'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'sa'. Source Error:
Line 22: string strcon = ConfigurationManager.ConnectionStrings["HCConnectionString"].ConnectionString; Line 23: SqlConnection cn = new SqlConnection(strcon); Line 24: cn.Open(); Line 25: return cn; Line 26:
Source File: d:\Website\Mau3\vppdeli.com\App_Code\ToolsDT.cs Line: 24 Stack Trace:
[SqlException (0x80131904): Login failed for user 'sa'.] System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) +357 System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +79 System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +201 System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +156 System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +22 System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +92 System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +219 System.Data.SqlClient.SqlConnection.Open() +101 ToolsDT.getConnect1() in d:\Website\Mau3\vppdeli.com\App_Code\ToolsDT.cs:24 tintucchitiet.Page_Load(Object sender, EventArgs e) in d:\Website\Mau3\vppdeli.com\tintucchitiet.aspx.cs:34 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52 System.Web.UI.Control.OnLoad(EventArgs e) +97 System.Web.UI.Control.LoadRecursive() +61 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4770.0

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