# AdoNetGrainDirectoryOptions Properties

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.graindirectory.adonet/orleans.graindirectory.adonet.adonetgraindirectoryoptions/)

## ConnectionString {#connectionstring-95c9368d}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.graindirectory.adonet/orleans.graindirectory.adonet.adonetgraindirectoryoptions/properties/connectionstring-95c9368d/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/AdoNet/Orleans.GrainDirectory.AdoNet/AdoNetGrainDirectoryOptions.cs)

```csharp
[System.ComponentModel.DataAnnotations.Required]
public string ConnectionString
```

Gets or sets the connection string.

## Invariant {#invariant-f50cb7e4}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.graindirectory.adonet/orleans.graindirectory.adonet.adonetgraindirectoryoptions/properties/invariant-f50cb7e4/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/AdoNet/Orleans.GrainDirectory.AdoNet/AdoNetGrainDirectoryOptions.cs)

```csharp
[System.ComponentModel.DataAnnotations.Required]
public string Invariant
```

Gets or sets the ADO.NET invariant.