# IDistributedApplicationBuilder.addCSharpApp

- Module: [Aspire.Hosting](/reference/api/typescript/aspire.hosting.md)
- Defined on: [IDistributedApplicationBuilder](/reference/api/typescript/aspire.hosting/idistributedapplicationbuilder.md)
- Version: `13.4.0`
- Kind: `method`

Adds a C# application resource

## Definition

```typescript
interface IDistributedApplicationBuilder {
  // ... omitted for brevity
  addCSharpApp(
      name: string,
      path: string,
      options?: ProjectResourceOptions): CSharpAppResource;
}
```

## Signature

```typescript
addCSharpApp(
    name: string,
    path: string,
    options?: ProjectResourceOptions): CSharpAppResource
```

## Parameters

- `name` (`string`)
- `path` (`string`)
- `options` ([ProjectResourceOptions](/reference/api/typescript/aspire.hosting/projectresourceoptions.md)) `optional`

## Returns

[CSharpAppResource](/reference/api/typescript/aspire.hosting/csharpappresource.md) `builder`

## Defined on

- [IDistributedApplicationBuilder](/reference/api/typescript/aspire.hosting/idistributedapplicationbuilder.md) -- `interface`