how to check validation in file uploading like .doc.docx.txt.xls.xlsx .with example in asp.net with c# language with code

Question

how to check validation in file uploading like .doc.docx.txt.xls.xlsx .with example in asp.net with c# language with code?

Shivanand Arur · Answer

Hey this is just an example.... using System; using System.IO; using System.Collections; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender EventArgs e) { ArrayList list = new ArrayList(); list.Add(.doc); list.Add(.docx); list.Add(.txt); list.Add(.xls); list.Add(.xlsx); string Extension = Path.GetExtension(FileUpload1.PostedFile.FileName); foreach (string s in list) { if (Extension == s) { Response.Write(File Type Not allowed. please choose some other file type); // Or you can write your logic here } else { // Your Code Logic Comes here } } } } You can write this code in the Button Click Event... Hope this helps you out.. Thank you!!! Please mark this answer as accepted if it helped!!!

how to check validation in file uploading like .doc,.docx,.txt,.xls,.xlsx .with example in asp.net with c# language ,with code