Partial Class login_CreateUser Inherits System.Web.UI.Page Protected Sub FileUpload_Mobile_Init(sender As Object, e As EventArgs) End Sub Protected Sub FileUpload_Desktop_Init(sender As Object, e As EventArgs) End Sub Protected Sub LinkButton1_Click(sender As Object, e As EventArgs) Dim validFileTypes As String() = {"bmp", "gif", "png", "jpg", "jpeg", "doc", "xls"} Dim ext As String = System.IO.Path.GetExtension(FileUpload_Mobile.PostedFile.FileName) Dim isValidFile As Boolean = False For i As Integer = 0 To validFileTypes.Length - 1 If ext = "." & validFileTypes(i) Then isValidFile = True Exit For End If Next If Not isValidFile Then lblMessage_mob.ForeColor = System.Drawing.Color.Red lblMessage_mob.Text = "Invalid File. Please upload a File with extension " & String.Join(",", validFileTypes) Else lblMessage_mob.ForeColor = System.Drawing.Color.Green lblMessage_mob.Text = "File uploaded successfully." End If End Sub Protected Sub btn_Save_Changes_Click(sender As Object, e As EventArgs) Dim validFileTypes As String() = {"bmp", "gif", "png", "jpg", "jpeg", "doc", "xls"} Dim ext As String = System.IO.Path.GetExtension(FileUpload_Desktop.PostedFile.FileName) Dim isValidFile As Boolean = False For i As Integer = 0 To validFileTypes.Length - 1 If ext = "." & validFileTypes(i) Then isValidFile = True Exit For End If Next If Not isValidFile Then lbl_message_desktop.ForeColor = System.Drawing.Color.Red lbl_message_desktop.Text = "Invalid File. Please upload a File with extension " & String.Join(",", validFileTypes) Else lbl_message_desktop.ForeColor = System.Drawing.Color.Green lbl_message_desktop.Text = "File uploaded successfully." End If End Sub End Class