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 74: 							<img align=left runat=server id="hello" visible='<%# Eval("ava") != DBNull.Value%>' 
Line 75: 								src='<%# Prefix + "/Modules/Discuss/image.aspx?u=" + Eval("UserId") %>'/>
Line 76: 							<b><%# (string)Eval("Name")%></b>
Line 77: 							&#160;|&#160;
Line 78: 							<span>

Source File: e:\rooms\u274606\chclub.ru\www\Modules\Lines\Components\Detail\WithoutDate.ascx    Line: 76

Stack Trace:


[InvalidCastException: Unable to cast object of type 'System.DBNull' to type 'System.String'.]
   ASP.modules_lines_components_detail_withoutdate_ascx.__DataBind__control15(Object sender, EventArgs e) in e:\rooms\u274606\chclub.ru\www\Modules\Lines\Components\Detail\WithoutDate.ascx:76
   System.Web.UI.Control.OnDataBinding(EventArgs e) +99
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +92
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.Control.DataBindChildren() +211
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +102
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.WebControls.Repeater.CreateItem(Int32 itemIndex, ListItemType itemType, Boolean dataBind, Object dataItem) +124
   System.Web.UI.WebControls.Repeater.CreateControlHierarchy(Boolean useDataSource) +443
   System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e) +51
   System.Web.UI.WebControls.Repeater.DataBind() +75
   JET.Modules.Lines.MainDetail.LoadCommentRepeater() in D:\wwwroot\chclub\Modules\Lines\Components\Detail\Main.ascx.cs:106
   JET.Modules.Lines.MainDetail.Page_Load(Object sender, EventArgs e) in D:\wwwroot\chclub\Modules\Lines\Components\Detail\Main.ascx.cs:71
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   JET.PortalControl.OnLoad(EventArgs e) in D:\wwwroot\chclub\Engine\Framework\BaseClasses\PortalControl.cs:1022
   System.Web.UI.Control.LoadRecursive() +50
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627


Version Information: Microsoft .NET Framework Version:2.0.50727.9044; ASP.NET Version:2.0.50727.9047