[InvalidOperationException: ConnectionString 属性尚未初始化。]
System.Data.SqlClient.SqlConnection.PermissionDemand() +7139045
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
DAL.SqlHelper.PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, String cmdText, SqlParameter[] cmdParms) in E:\kama\Work\ZhiLiaoWeb\ZhiLiaoWeb\DAL\SqlHelper.cs:899
DAL.SqlHelper.ExecuteAsDataSet(String connectionString, CommandType cmdType, String selectCmdText, SqlParameter[] commandParameters) in E:\kama\Work\ZhiLiaoWeb\ZhiLiaoWeb\DAL\SqlHelper.cs:547
DAL.NewsDAL.GetModel(String connStr, Int32 Id) in E:\kama\Work\ZhiLiaoWeb\ZhiLiaoWeb\DAL\NewsDAL.cs:57
BusinessLogic.NewsBLL.GetModel(Int32 id) in E:\kama\Work\ZhiLiaoWeb\ZhiLiaoWeb\BusinessLogic\NewsBLL.cs:31
MWebPage_MNewsInfo_NewsDetail.AddClick(Int32 nid) +44
MWebPage_MNewsInfo_NewsDetail.Page_Load(Object sender, EventArgs e) +220
System.Web.UI.Control.OnLoad(EventArgs e) +106
System.Web.UI.Control.LoadRecursive() +68
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785
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