UploadControlValidationSettings.ErrorStyle Property
Gets the style settings for rendering the error message that is displayed if the uploaded file does not pass validation.
Namespace: DevExpress.Web
Assembly: DevExpress.Web.v18.2.dll
Declaration
Property Value
| Type | Description |
|---|---|
| AppearanceStyleBase | A AppearanceStyleBase object that contains style settings for the error message. |
Property Paths
You can access this nested property as listed below:
Example
The following sample code demonstrates how to save the file specified within the ASPxUploadControl on the client. Before file saving, the FileUploadCompleteEventArgs.IsValid property is tested to verify whether the file passes the validation criteria defined via the ASPxUploadControl.ValidationSettings property. Note, that in order to compose the ASPxUploadControl.SaveAs method’s parameter value, the System.Web.Hosting.HostingEnvironment.MapPath method and ASPxUploadControl.FileName property are used to specify the web application’s Image folder as a location where the file should be saved, and define the file’s name, respectively.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="DevExpress.Web.v10.2, Version=10.2.1.0, Culture=neutral,
PublicKeyToken=b88d1754d700e49a" Namespace="DevExpress.Web.ASPxUploadControl" TagPrefix="dxuc" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e){
}
protected void ASPxUploadControl1_FileUploadComplete(object sender,
DevExpress.Web.FileUploadCompleteEventArgs e) {
if (e.IsValid) {
ASPxUploadControl1.SaveAs(MapPath("Images/" + ASPxUploadControl1.FileName));
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>How to use the ASPxUploadControl's Validation Settings</title>
</head>
<body>
<form id="form2" runat="server">
<dxuc:ASPxUploadControl
ID="ASPxUploadControl1"
runat="server"
OnFileUploadComplete="ASPxUploadControl1_FileUploadComplete">
<ValidationSettings
AllowedFileExtensions=".txt,.jpg,.jpe,.jpeg,.doc"
MaxFileSize="1000000"
FileDoesNotExistErrorText="This file can't be found."
GeneralErrorText="Custom file uploading fails due to an external error that
doesn't relate to the ASPxUploadControl's functionality"
MaxFileSizeErrorText="Size of the uploaded file exceeds maximum file size"
NotAllowedContentTypeErrorText="The uploaded file's content type isn't allowed">
<ErrorStyle BackColor="Yellow" ForeColor="Black" />
</ValidationSettings>
</dxuc:ASPxUploadControl>
</form>
</body>
</html>