Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 68:                                     <h4 class="title mb-3 text-uppercase"><%#Eval("title") %></h4>
Line 69:                                     <dl class="param param-feature">
Line 70:                                         <dt style='<%# Eval("language.language_name").ToString() == "" ?  "display:none": "" %>'>Language:&nbsp;<span style="font-size: medium; font-weight: normal;"><%#Eval("language.language_name") %></span></dt>
Line 71:                                         <dt style='<%# Eval("author").ToString() == "" ?  "display:none": "" %>'>By:&nbsp;<span style="font-size: medium; font-weight: normal;"><%#Eval("author") %></span></dt>
Line 72:                                         <dd style='<%# Eval("published_year").ToString() == "" ?  "display:none": "" %>'>Published in&nbsp<%#Eval("published_year") %></dd>

Source File: g:\pleskvhosts\chavaralibrary.in\Webs\ChavaraLibrary\public\ViewBook.aspx    Line: 70

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   ASP.public_viewbook_aspx.__DataBind__control3(Object sender, EventArgs e) in g:\pleskvhosts\chavaralibrary.in\Webs\ChavaraLibrary\public\ViewBook.aspx:70
   System.Web.UI.Control.OnDataBinding(EventArgs e) +86
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +154
   System.Web.UI.Control.DataBind() +17
   System.Web.UI.Control.DataBindChildren() +187
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +164
   System.Web.UI.Control.DataBind() +17
   System.Web.UI.WebControls.ListView.CreateItemsWithoutGroups(ListViewPagedDataSource dataSource, Boolean dataBinding, InsertItemPosition insertPosition, ArrayList keyArray) +855
   System.Web.UI.WebControls.ListView.CreateChildControls(IEnumerable dataSource, Boolean dataBinding) +1104
   System.Web.UI.WebControls.ListView.PerformDataBinding(IEnumerable data) +35
   System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) +133
   System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +34
   System.Web.UI.WebControls.DataBoundControl.PerformSelect() +151
   System.Web.UI.WebControls.ListView.PerformSelect() +104
   System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +76
   public_ViewBook.bindBookDetails(Int32 id) +81
   public_ViewBook.Page_Load(Object sender, EventArgs e) +110
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0