[ConstraintException: Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.]
System.Data.DataTable.EnableConstraints() +475
System.Data.DataTable.set_EnforceConstraints(Boolean value) +45
System.Data.DataTable.EndLoadData() +199
System.Data.Common.DataAdapter.FillFromReader(DataSet dataset, DataTable datatable, String srcTable, DataReaderContainer dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue) +303
System.Data.Common.DataAdapter.Fill(DataTable[] dataTables, IDataReader dataReader, Int32 startRecord, Int32 maxRecords) +733
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +238
System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior) +453
System.Data.Common.DbDataAdapter.Fill(DataTable dataTable) +141
DataSetSpecializationTableAdapters.Tbl_SpecializationTableAdapter.GetDataByUni(Nullable`1 Fld_UniId) in d:\Inetpub\vhosts\basharweb.com\tmp\root\e05550ca\cc1300f0\App_Code.db8ee_ry.4.cs:1143
SubPage.Page_Load(Object sender, EventArgs e) in d:\Inetpub\vhosts\basharweb.com\alhuda-edu.com\CountryUniversity.aspx.cs:18
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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