Server Error in '/' Application.

Unable to cast object of type 'System.DBNull' to type 'System.String'.

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.InvalidCastException: Unable to cast object of type 'System.DBNull' to type 'System.String'.

Source Error:


Line 29:                 </HeaderTemplate>
Line 30:                 <ItemTemplate>
Line 31:                     <li><a href="<%# (string)Eval("url") == "" ? "/" + url.Slug((string)Eval("tipo_pagina")) + "/" + Eval("ref") + "/" + url.Slug((string)Eval("evento")) + "/" + url.Slug((string)Eval("titulo")) : Eval("url") %>" target="<%# (string)Eval("url") == "" ? "_self" : Eval("alvo") %>" title="<%# Eval("titulo") %>"><%# Eval("titulo") %></a></li>
Line 32:                 </ItemTemplate>
Line 33:                 <FooterTemplate>

Source File: D:\home\LocalUser\siteSpr\web\eventos-edicoes-anteriores.aspx    Line: 31

Stack Trace:


[InvalidCastException: Unable to cast object of type 'System.DBNull' to type 'System.String'.]
   ASP.eventos_edicoes_anteriores_aspx.__DataBind__control4(Object sender, EventArgs e) in D:\home\LocalUser\siteSpr\web\eventos-edicoes-anteriores.aspx:31
   System.Web.UI.Control.OnDataBinding(EventArgs e) +100
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +178
   System.Web.UI.Control.DataBindChildren() +248
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +195
   System.Web.UI.WebControls.Repeater.CreateItem(Int32 itemIndex, ListItemType itemType, Boolean dataBind, Object dataItem) +174
   System.Web.UI.WebControls.Repeater.AddDataItemsIntoItemsArray(IEnumerable dataSource, Boolean useDataSource) +291
   System.Web.UI.WebControls.Repeater.PostGetDataAction(IEnumerable dataSource) +109
   System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e) +81
   Spr_Site.eventos_edicoes_anteriores.BindNavegacao(Int32 id) +869
   Spr_Site.eventos_edicoes_anteriores.Page_Load(Object sender, EventArgs e) +130
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


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