Server Error in '/' Application.

Length cannot be less than zero.
Parameter name: length

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.ArgumentOutOfRangeException: Length cannot be less than zero.
Parameter name: length

Source Error:


Line 5:  <asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
Line 6:      <meta property="og:title" content="<%=MenuItem.Name%>" />
Line 7:      <meta property="og:description" content="<%=Spectrum.Extension.Extension.Substring(ContentItem.Description,250) %>" />
Line 8:      <meta property="og:url" content="https://www.teski.gov.tr/icerik.aspx?Id=<%=Id %>" />
Line 9:      <meta property="og:image" content="https://www.teski.gov.tr/<%=ContentItem.SplashPhoto%>" />

Source File: C:\www\webtest.teski.gov.tr\icerik\detay.aspx    Line: 7

Stack Trace:


[ArgumentOutOfRangeException: Length cannot be less than zero.
Parameter name: length]
   System.String.Substring(Int32 startIndex, Int32 length) +14794116
   Spectrum.Extension.Extension.Substring(String inputString, Int32 MaxLen) +247
   ASP.icerik_detay_aspx.__RenderContent1(HtmlTextWriter __w, Control parameterContainer) in C:\www\webtest.teski.gov.tr\icerik\detay.aspx:7
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +117
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +250
   System.Web.UI.HtmlControls.HtmlHead.RenderChildren(HtmlTextWriter writer) +27
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +47
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   ASP.master_content_master.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\2f4338f6\3d435bed\App_Web_cgxsmg5t.2.cs:0
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +117
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +250
   System.Web.UI.Page.Render(HtmlTextWriter writer) +39
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +79
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +8753


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3930.0