ASPxUploadControl.ValidationSettings Property

Gets the control’s validation settings.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v18.2.dll

Declaration

C#

public UploadControlValidationSettings ValidationSettings { get; }

VB.NET

Public ReadOnly Property ValidationSettings As UploadControlValidationSettings

Property Value

Type	Description
UploadControlValidationSettings	A UploadControlValidationSettings object that contains validation settings.

Remarks

Use the ValidationSettings property to access and customize the settings that relate to the ASPxUploadControl control’s validation.

Example

The following part of the ASPxUploadControl Multi-File Upload online demo illustrates the ASPxUploadControl’s capability to upload more than one file at a time.

JS

var fieldSeparator = "|";
function FileUploadStart() {
    document.getElementById("uploadedListFiles").innerHTML = "";
}
function FileUploaded(s, e) {
    if(e.isValid) {
        var linkFile = document.createElement("a");
        var indexSeparator = e.callbackData.indexOf(fieldSeparator);
        var fileName = e.callbackData.substring(0, indexSeparator);
        var pictureUrl = e.callbackData.substring(indexSeparator + fieldSeparator.length);
        var date = new Date();
        var imgSrc = "UploadImages/" + pictureUrl + "?dx=" + date.getTime();
        linkFile.innerHTML = fileName;
        linkFile.setAttribute("href", imgSrc);
        linkFile.setAttribute("target", "_blank");
        var container = document.getElementById("uploadedListFiles");
        container.appendChild(linkFile);
        container.appendChild(document.createElement("br"));
    }
}

ASPX

<script runat="server">
 public partial class UploadControl_MultiFileUpload : BasePage
 {
     const string UploadDirectory = "~/UploadControl/UploadImages/";
     const int ThumbnailSize = 100;

     protected void Page_Load(object sender, EventArgs e) {
         if(IsPostBack)
             UploadControl.ShowProgressPanel = chbShowProgressPanel.Checked;
     }

     protected string SavePostedFiles(UploadedFile uploadedFile) {
         string ret = "";
         if(uploadedFile.IsValid) {
             FileInfo fileInfo = new FileInfo(uploadedFile.FileName);
             string resFileName = MapPath(UploadDirectory) + fileInfo.Name;
             uploadedFile.SaveAs(resFileName);

             string fileLabel = fileInfo.Name;
             string fileType = uploadedFile.PostedFile.ContentType.ToString();
             string fileLength = uploadedFile.PostedFile.ContentLength / 1024 + "K";
             ret = string.Format("{0} <i>({1})</i> {2}|{3}", 
                 fileLabel, fileType, fileLength, fileInfo.Name);
         }
         return ret;
     }
     protected void UploadControl_FileUploadComplete(object sender, 
      FileUploadCompleteEventArgs e) {
         try {
             e.CallbackData = SavePostedFiles(e.UploadedFile);
         }
         catch(Exception ex) {
             e.IsValid = false;
             e.ErrorText = ex.Message;
         }
     }
 }
</script>
...
         <dxuc:ASPxUploadControl ID="UploadControl" runat="server" 
             ShowAddRemoveButtons="True" Width="300px"
             ShowUploadButton="True" AddUploadButtonsHorizontalPosition="Left" 
             ShowProgressPanel="True" ClientInstanceName="UploadControl" 
             OnFileUploadComplete="UploadControl_FileUploadComplete" FileInputCount="3">
             <ValidationSettings MaxFileSize="4000000" 
             AllowedFileExtensions=".jpg,.jpe,.jpeg,.gif"></ValidationSettings>
             <ClientSideEvents
                 fileuploadcomplete="function(s, e) { FileUploaded(s, e) }"
                 fileuploadstart="function(s, e) { FileUploadStart(); }"
             />
         </dxuc:ASPxUploadControl>
...
         <dxrp:ASPxRoundPanel ID="ASPxRoundPanel1" runat="server" Width="300px" 
             ClientInstanceName="RoundPanel"
             HeaderText="Uploaded files (jpeg, gif)" Height="100%">
             <panelcollection>
                 <dxp:PanelContent runat="server">
                     <div id="uploadedListFiles" style="height: 150px; font-family: Arial;">
                     </div>
                 </dxp:PanelContent>
             </panelcollection>
         </dxrp:ASPxRoundPanel>
...