Fix small bug in .aspx file causing error (conversion from string "" to type Double not valid.)

This is string to Double conversion type error. Greeting! My Name is Noor All Safaet and expert in Software and Web Development. I would love to have the opportunity to discuss about your project with you. 3.5+ years of experience as Web, Software and Database Developer on these areas 1. .NET, C#, ASP.NET, WebForm, MVC, Webservice, WebAPI, VB.NET, Visual Studio 2010-2015 2. Microsoft SQL Server, Oracle, MySQL, SQLite 3. SQL, Entity Framework, Linq, Lambda Expression 4. Javascript, JQuery, AJAX, JSON, SignalR 5. Crystal Report 6. CSS, HTML 7. NopCommerce 8. Windows XP, 7, 8, 8.1, 10 9. XML HTTP POST/GET API I am expert for reporting. I use crystal report. Any kind of report such as Accounts payable, Accounts Receivable, General Ledger, Invoice, Purchase report, Sales Report and so on. Customized report. My Work History, [login to view URL] Elearning Website (ASP.NET Webform, C# and SQL Server) [login to view URL] News Portal (ASP.NET MVC, C# and SQL Server) Web Send SMS from Website and Receive SMS from Mobile (ASP.NET MVC, C# and SQL Server) Web Welpac Management System(ASP.NET, C#) Web Payroll Using Webcam Salary (C#, SQL Server) Desktop VAT Calculation in Bangladesh (C#, SQL Server) Desktop Health Care Software (C#, SQL Server) Desktop [login to view URL] (ASP.NET CMS) Web Order Management (C#, SQL Server) Desktop Thank you for your time and considerations. With Regards, Noor All Safaet

Hi sir I am having 5+ year of experience in ASP.NET if you can give me chance to work with you

Hi, I can fix this error for you in an hour. I can fix this error for you in an hour. I can fix this error for you in an hour.