UploadedFile.IsValid Property

Gets a value indicating whether the uploaded file passes the validation criteria defined via the ASPxUploadControl.ValidationSettings property.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v24.2.dll

Declaration

C#

public bool IsValid { get; set; }

VB.NET

Public Property IsValid As Boolean

Property Value

Type	Description
Boolean	true if the file is valid; otherwise, false.

Remarks

Use the IsValid property to verify whether the uploaded file has passed the built-in validation whose criteria can be defined using the ValidationSettings property. Typically, the IsValid property can be used to determine whether a file is valid before saving the file (using the SaveAs(String) method, for instance).

Note that if an uploaded file’s validation fails, the IsValid and isValid properties are also automatically set to false.

ASPX

<dx:ASPxUploadControl ID="UploadControl" runat="server" ClientInstanceName="UploadControl" 
  OnFilesUploadComplete="UploadControl_FilesUploadComplete" ...>
...
</dx:ASPxUploadControl>

C#

protected void UploadControl_FilesUploadComplete(object sender, FilesUploadCompleteEventArgs e) {
    foreach(UploadedFile file in UploadControl.UploadedFiles) {
        if(!string.IsNullOrEmpty(file.FileName) && file.IsValid)
            e.CallbackData = "success";
    }
}

Online Demo

ASPxUploadControl - Custom Progress Panel

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the IsValid property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

asp-net-mvc-grid-specify-custom-editform-template/CS/Sample/Controllers/HomeController.cs#L53

public static void uploadControl_FileUploadComplete(object sender, FileUploadCompleteEventArgs e) {
    if(e.UploadedFile.IsValid) {
        string resultFilePath = "~/Content/Avatars/" + string.Format("Avatar{0}{1}", Convert.ToString(HttpContext.Current.Session["UserID"]), Path.GetExtension(e.UploadedFile.FileName));

asp-net-mvc-uploadcontrol-upload-files/CS/Controllers/HomeController.cs#L27

public static void uc_FileUploadComplete(object sender, FileUploadCompleteEventArgs e) {
    if(e.UploadedFile.IsValid) {
        string resultFilePath = HttpContext.Current.Request.MapPath(UploadDirectory + e.UploadedFile.FileName);

asp-net-mvc-implement-pdf-viewer/CS/E5101/Controllers/HomeController.cs#L30

public static void FileUploadComplete(object sender, FileUploadCompleteEventArgs e) {
    if (e.UploadedFile.IsValid) {
        HttpContext.Current.Session[E5101.Controllers.PdfViewerController.SESSION_KEY] = e.UploadedFile.FileBytes;

asp-net-mvc-grid-upload-excel-file-using-upload-control-and-display-data-in-grid/CS/T449148/Controllers/HomeController.cs#L50

const string UploadDirectory = "~/Content/UploadedFiles/";
if (e.UploadedFile.IsValid)
{

asp-net-mvc-upload-control-upload-multiple-files/CS/UploadControlExample/Controllers/HomeController.cs#L31

for (int i = 0; i < files.Length; i++) {
    if (files[i].IsValid && !string.IsNullOrWhiteSpace(files[i].FileName)) {
        string resultFilePath = "~/Content/" + files[i].FileName;

VB.NET

asp-net-mvc-grid-specify-custom-editform-template/VB/Sample/Controllers/HomeController.vb#L54

Public Shared Sub uploadControl_FileUploadComplete(ByVal sender As Object, ByVal e As FileUploadCompleteEventArgs)
    If e.UploadedFile.IsValid Then
        Dim resultFilePath As String = "~/Content/Avatars/" & String.Format("Avatar{0}{1}", Convert.ToString(HttpContext.Current.Session("UserID")), Path.GetExtension(e.UploadedFile.FileName))

asp-net-mvc-uploadcontrol-upload-files/VB/Controllers/HomeController.vb#L26

Public Shared Sub uc_FileUploadComplete(ByVal sender As Object, ByVal e As FileUploadCompleteEventArgs)
    If e.UploadedFile.IsValid Then
        Dim resultFilePath As String = HttpContext.Current.Request.MapPath(UploadDirectory & e.UploadedFile.FileName)

asp-net-mvc-implement-pdf-viewer/VB/E5101/Controllers/HomeController.vb#L29

Public Shared Sub FileUploadComplete(ByVal sender As Object, ByVal e As FileUploadCompleteEventArgs)
    If e.UploadedFile.IsValid Then
        HttpContext.Current.Session(E5101.Controllers.PdfViewerController.SESSION_KEY) = e.UploadedFile.FileBytes

asp-net-mvc-grid-upload-excel-file-using-upload-control-and-display-data-in-grid/VB/T449148_VB/Controllers/HomeController.vb#L38

Const UploadDirectory As String = "~/Content/UploadedFiles/"
If e.UploadedFile.IsValid Then
    Dim ms As MemoryStream = New MemoryStream()

asp-net-mvc-upload-control-upload-multiple-files/VB/UploadControlExample/Controllers/HomeController.vb#L33

For i As Integer = 0 To files.Length - 1
    If files(i).IsValid AndAlso (Not String.IsNullOrWhiteSpace(files(i).FileName)) Then
        Dim resultFilePath As String = "~/Content/" & files(i).FileName