Breadcrumb arrow Back to Code Examples

Multiple File Selection And Drag Drop Operations In A Blazor File Manager Component

Sample date Updated on Apr 30, 2026
Browse Code Git logo Download
blazor blazor-ui-components drag-and-drop file-manager multi-file-selection selection wasm

Repository Description
This repository contains a Blazor sample project that demonstrates how to customize multiple file selection and drag-and-drop operations in the Syncfusion Blazor File Manager component.

The sample shows how to disable multiple file selection, enable drag-and-drop functionality, and restrict drag-and-drop operations for specific file types within the File Manager UI.

Project Overview

The purpose of this project is to help developers understand how to control user interactions in the Syncfusion Blazor File Manager. It focuses on configuring selection and drag-and-drop behavior to meet application-specific requirements.

Features

  • Integration of Syncfusion Blazor File Manager
  • Enable drag-and-drop operations for files and folders
  • Disable multiple file selection
  • Restrict drag-and-drop for specific file types
  • Blazor-based configuration for interaction control

Prerequisites

Ensure the following requirements are met before running this project:

  • Visual Studio 2022
  • .NET SDK compatible with Blazor
  • Syncfusion Blazor packages
  • Valid Syncfusion license key (if required)

How to run the sample

  1. Clone or download the repository to your local machine.
  2. Open the solution file using Visual Studio 2022.
  3. Restore the NuGet packages by rebuilding the solution.
  4. After restoring the required packages, run the project from Visual Studio.
  5. The application starts and displays the Syncfusion Blazor File Manager component.

Usage

Once the application is running, you can:

  • Observe single-file selection behavior in the File Manager
  • Drag and drop allowed files and folders
  • Verify that drag-and-drop is restricted for specified file types

This sample is useful for applications that require controlled file interaction patterns.

Configuration

The File Manager interaction settings are configured within the Blazor application. You can customize:

  • Selection behavior (single vs. multiple)
  • Drag-and-drop enablement
  • File-type-based restrictions

Examples

  • Blazor File Manager with disabled multi-selection
  • Drag-and-drop enabled for valid file types
  • Restricted drag-and-drop for specific extensions

Documentation

Additional Resources

Troubleshooting

  • Ensure that the Syncfusion license key is registered properly.
  • Verify that NuGet packages are restored successfully.
  • Rebuild and restart the project if configuration changes are not reflected.
  • Check browser and application logs for runtime errors.

Support

For detailed API references, interaction customization guidance, and advanced Blazor File Manager scenarios, refer to the Syncfusion Blazor documentation links provided above. To get more help, check the ASP.NET Core Blazor documentation.

Up arrow