The input string did not match the expected format.

by | Jun 7, 2025 | Pharma

It appears that you’ve encountered an error message related to a web application built on the .NET Framework. This error, a FormatException, occurs when the application attempts to process an input string that is not in the correct format. The error message and stack trace provide valuable information for diagnosing and resolving the issue.

Error Overview

  • Type: System.FormatException
  • Message: "Input string was not in a correct format."
  • Source: The error originates from the NewsDetails.aspx.cs file, specifically at line 140.

Stack Trace Analysis

The stack trace is a snapshot of the call stack at the moment the exception was thrown. It helps in identifying the sequence of method calls that led to the exception. Here’s a breakdown:

  1. [FormatException: Input string was not in a correct format.]: This indicates the type of exception and its message.
  2. Pharmabiz.NewsDetails.Page_Load(Object sender, EventArgs e) in D:\SaffronMedia\TFS Applications\Pharmabiz\Pharmabiz\Pharmabiz\NewsDetails.aspx.cs:140: The exception is thrown from the Page_Load method of the NewsDetails page, located in the specified file path at line 140. This suggests that there is an issue with how data is being parsed or formatted within this method.
  3. System.Web.UI.Control.OnLoad(EventArgs e) +108: After the Page_Load method, the control’s OnLoad event is triggered, which is part of the ASP.NET page lifecycle.
  4. System.Web.UI.Control.LoadRecursive() +90: This is another part of the page lifecycle, ensuring that all controls on the page are loaded.
  5. System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533: This method is involved in the main processing of the HTTP request.

Resolving the Issue

To fix this error, you would need to examine the code at line 140 of NewsDetails.aspx.cs and ensure that any input string being processed is correctly formatted according to the expectations of the method or function attempting to parse it. This could involve:

  • Validating input strings to ensure they match the expected format.
  • Properly handling exceptions so that the application can gracefully recover or provide meaningful error messages.
  • Reviewing any recent changes to the Page_Load method or related code to identify potential issues.

Version Information

The error is occurring on an application using the .NET Framework Version 4.0.30319 and ASP.NET Version 4.8.4676.0. This information can be useful if the issue is related to a known problem in these versions of the framework or if specific updates or patches are required to address the issue.