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.v20.2.dll

NuGet Package: DevExpress.Web

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#

how-to-upload-and-download-html-files-to-from-htmleditor-e2838/CS/Controllers/HomeController.cs#L41

protected void FileUploadComplete(object sender, FileUploadCompleteEventArgs e) {
    if (e.UploadedFile.IsValid) {
        e.CallbackData = System.Text.Encoding.UTF8.GetString(e.UploadedFile.FileBytes);

aspxuploadcontrol-how-to-implement-a-confirmation-message-when-overwriting-a-file-e4647/CS/UploadControl.ascx.cs#L14

UploadedFile file = e.UploadedFile;
if (file.IsValid)
    file.SaveAs(Server.MapPath(file.FileName));

how-to-use-aspxuploadcontrol-in-the-edit-appointment-form-t182668/CS/WebApplication1/CustomControls/CustomAppointmentForm.ascx.cs#L47

string SavePostedFiles(UploadedFile uploadedFile) {
    if(!uploadedFile.IsValid)
        return string.Empty;

gridview-how-to-upload-an-excel-file-via-uploadcontrol-and-display-its-data-in-a-grid-t449148/CS/T449148/Controllers/HomeController.cs#L50

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

richedit-how-to-upload-a-file-via-uploadcontrol-and-open-it-in-richedit-t530023/CS/T530023/Controllers/HomeController.cs#L38

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

how-to-upload-and-download-html-files-to-from-htmleditor-e2838/VB/Controllers/HomeController.vb#L41

Protected Sub FileUploadComplete(ByVal sender As Object, ByVal e As FileUploadCompleteEventArgs)
    If e.UploadedFile.IsValid Then
        e.CallbackData = System.Text.Encoding.UTF8.GetString(e.UploadedFile.FileBytes)

aspxuploadcontrol-how-to-implement-a-confirmation-message-when-overwriting-a-file-e4647/VB/UploadControl.ascx.vb#L16

    Dim file As UploadedFile = e.UploadedFile
    If file.IsValid Then file.SaveAs(Server.MapPath(file.FileName))
End Sub

how-to-use-aspxuploadcontrol-in-the-edit-appointment-form-t182668/VB/WebApplication1/CustomControls/CustomAppointmentForm.ascx.vb#L50

Private Function SavePostedFiles(ByVal uploadedFile As UploadedFile) As String
    If Not uploadedFile.IsValid Then
        Return String.Empty

gridview-how-to-upload-an-excel-file-via-uploadcontrol-and-display-its-data-in-a-grid-t449148/VB/T449148_VB/Controllers/HomeController.vb#L38

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

richedit-how-to-upload-a-file-via-uploadcontrol-and-open-it-in-richedit-t530023/VB/T530023_VB/Controllers/HomeController.vb#L28

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