check validation in file uploading (.doc,.docx,.txt,.xls,.xlsx)

Question

check validation in file uploading (.doc,.docx,.txt,.xls,.xlsx) .this file are allowed for file uploading except this other file can't allowed in asp.net with c# language with code? and example?

Vithal Wadje · Answer

please check my article about file extension validation here http://www.c-sharpcorner.com/UploadFile/0c1bb2/uploading-and-downloading-excel-files-from-database-using-as/

Shivanand Arur · Answer

Just a sample code to help u out... Check the logic... Hope this helps you out... Code : Default.aspx.cs page using System; using System.IO; 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) { } protected void Button1_Click(object sender, EventArgs e) { string Extension = Path.GetExtension(FUDoc.PostedFile.FileName); switch (Extension) { case ".doc": case ".docx": case ".txt": case ".xls": case ".xlsx": lblError.Text = "File can be uploaded"; break; default: lblError.Text = "Error, file Extension not allowed"; break; } } } Page : Default.aspx

Neha Sharma · Answer

Create this function: Protected Sub UploadThisFile(ByVal upload As FileUpload) If upload.HasFile Then Dim theFileName As String = Path.Combine(Server.MapPath("~/uploads"), upload.FileName) If File.Exists(theFileName) Then File.Delete(theFileName) End If upload.SaveAs(theFileName) End If End Sub Then add this code on Button click event: Dim imagech As String imagech = System.IO.Path.GetExtension(FileUpload1.FileName) If imagech = ".doc" Or imagech = ".docx" Then UploadThisFile(FileUpload1) If it helps you mark it as answer.

check validation in file uploading (.doc,.docx,.txt,.xls,.xlsx)

Answers (3)