Server Error in '/' Application.

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Line 258:                    dataTableNewsMaster.Rows[i]["newsSubCat1"] = newsReader["newsSubCat1"].ToString();
Line 259:                    dataTableNewsMaster.Rows[i]["newsSubCat2"] = newsReader["newsSubCat2"].ToString();
Line 260:                    dataTableNewsMaster.Rows[i]["newsVideo"] = newsReader["videoId"].ToString();
Line 261:                    dataTableNewsMaster.Rows[i]["reporterId"] = newsReader["reporterId"].ToString();
Line 262:                    dataTableNewsMaster.Rows[i]["newsEnabled"] = newsReader["newsEnabled"].ToString();

[InvalidOperationException: Invalid operation. The connection is closed.]
   System.Data.SqlClient.TdsParserStateObject.ReadSniSyncOverAsync() +406
   System.Data.SqlClient.TdsParserStateObject.TryReadNetworkPacket() +126
   System.Data.SqlClient.TdsParserStateObject.TryPrepareBuffer() +97
   System.Data.SqlClient.TdsParserStateObject.TryReadByteArray(Byte[] buff, Int32 offset, Int32 len, Int32& totalRead) +76
   System.Data.SqlClient.TdsParserStateObject.TryReadString(Int32 length, String& value) +150
   System.Data.SqlClient.TdsParser.TryReadSqlStringValue(SqlBuffer value, Byte type, Int32 length, Encoding encoding, Boolean isPlp, TdsParserStateObject stateObj) +424
   System.Data.SqlClient.TdsParser.TryReadSqlValue(SqlBuffer value, SqlMetaDataPriv md, Int32 length, TdsParserStateObject stateObj, SqlCommandColumnEncryptionSetting columnEncryptionOverride, String columnName) +686
   System.Data.SqlClient.SqlDataReader.TryReadColumnInternal(Int32 i, Boolean readHeaderOnly) +717
   System.Data.SqlClient.SqlDataReader.TryReadColumn(Int32 i, Boolean setTimeout, Boolean allowPartiallyReadColumn) +112
   System.Data.SqlClient.SqlDataReader.GetValueInternal(Int32 i) +42
   System.Data.SqlClient.SqlDataReader.GetValue(Int32 i) +95
   GetDataMaster.get_News_By_Nature(List`1 paramKey, List`1 paramValue) in d:\inetpub\vhosts\belsand.com\dailynewsonline.in\App_Code\GetDataMaster.cs:260
   NewsDetails.get_Related() in d:\inetpub\vhosts\belsand.com\dailynewsonline.in\NewsDetails.aspx.cs:51
   NewsDetails.Page_Load(Object sender, EventArgs e) in d:\inetpub\vhosts\belsand.com\dailynewsonline.in\NewsDetails.aspx.cs:20
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533