[InvalidOperationException: The ConnectionString property has not been initialized.]
System.Data.SqlClient.SqlConnection.PermissionDemand() +7117877
System.Data.SqlClient.SqlConnectionFactory.PermissionDemand(DbConnection outerConnection) +30
System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +312
System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +202
System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +413
System.Data.SqlClient.SqlConnection.Open() +128
uc_news_news_friend.Page_Load(Object sender, EventArgs e) +146
System.Web.UI.Control.OnLoad(EventArgs e) +106
System.Web.UI.Control.LoadRecursive() +68
System.Web.UI.Control.LoadRecursive() +162
System.Web.UI.Control.LoadRecursive() +162
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785
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