AIChatControl.OptionsFileUpload Property

Gets file upload settings, such as the maximum file size, allowed file types and extensions, and the maximum number of files a user can attach to a message.

Namespace: DevExpress.AIIntegration.WinForms.Chat

Assembly: DevExpress.AIIntegration.WinForms.Chat.v26.1.dll

NuGet Package: DevExpress.AIIntegration.WinForms.Chat

Declaration

C#

public OptionsFileUpload OptionsFileUpload { get; }

VB.NET

Public ReadOnly Property OptionsFileUpload As OptionsFileUpload

Property Value

Type	Description
DevExpress.AIIntegration.WinForms.Chat.OptionsFileUpload	An object that contains file upload settings.

Remarks

Users can attach files directly to their chat messages. The AI analyzes document content (such as text files, PDFs, images) and delivers more context-aware responses.

Run Demo: AI Chat – File Attachments

To activate file upload:

1. Enable the FileUploadEnabled property to allow users to attach files.

2. Use OptionsFileUpload settings to configure file upload operations based on your project requirements:

   Setting	Description
   FileTypeFilter	A collection of allowed MIME types.
   AllowedFileExtensions	A collection of allowed file extensions.
   MaxFileCount	The maximum number of files a user can attach to a message.
   MaxFileSize	The maximum file size (in bytes).

Example

C#

aiChatControl1.FileUploadEnabled = DevExpress.Utils.DefaultBoolean.True;
aiChatControl1.OptionsFileUpload.FileTypeFilter.AddRange(new List<string> { "text/plain", "application/pdf", "image/png" }); // Allowed MIME types.
aiChatControl1.OptionsFileUpload.AllowedFileExtensions.AddRange(new List<string> { ".txt", ".pdf", ".png" });
aiChatControl1.OptionsFileUpload.MaxFileCount = 5;
aiChatControl1.OptionsFileUpload.MaxFileSize = 5 * 1024 * 1024; // 5 MB

VB.NET

aiChatControl1.FileUploadEnabled = DevExpress.Utils.DefaultBoolean.True
' Allowed MIME types.
aiChatControl1.OptionsFileUpload.FileTypeFilter.AddRange(New List(Of String) From {"text/plain", "application/pdf", "image/png"})
aiChatControl1.OptionsFileUpload.AllowedFileExtensions.AddRange(New List(Of String) From {".txt", ".pdf", ".png"})
aiChatControl1.OptionsFileUpload.MaxFileCount = 5
aiChatControl1.OptionsFileUpload.MaxFileSize = 5 * 1024 * 1024 ' 5 MB

Tip

See the following article for more information on MIME types (FileTypeFilter): Common Media Types.

Refer to the following help topic for additional information: AI Chat Control