Detailed Error:

Exception of type 'System.Web.HttpUnhandledException' was thrown.

Detailed Error Message:

Cannot cast DBNull.Value to type 'System.Int32'. Please use a nullable type.

at System.Data.DataRowExtensions.UnboxT`1.ValueField(Object value) at Transfers_Public_ApplicationLockedCencilAndRegister.b__3(DataRow row) in e:\wwwroot\Ration-Mitra\WelFareInstitutions\Public\DistrictWiseWelfareInstitutionsandHostelReports.aspx.cs:line 52 at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext() at System.Linq.Enumerable.Sum(IEnumerable`1 source) at Transfers_Public_ApplicationLockedCencilAndRegister.WelfareInstituteandHostel() in e:\wwwroot\Ration-Mitra\WelFareInstitutions\Public\DistrictWiseWelfareInstitutionsandHostelReports.aspx.cs:line 52 at Transfers_Public_ApplicationLockedCencilAndRegister.Page_Load(Object sender, EventArgs e) in e:\wwwroot\Ration-Mitra\WelFareInstitutions\Public\DistrictWiseWelfareInstitutionsandHostelReports.aspx.cs:line 27 at System.EventHandler.Invoke(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)