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# Connection Property

Sets or retrieves the connection string used for an ADOAdapter object.

expression.Connection

expression Required. An expression that returns a reference to the ADOAdapter object.

## Security Level

2: Can be accessed only by forms running in the same domain as the currently open form, or by forms that have been granted cross-domain permissions.

## Remarks

The Connection property of the ADOAdapter object contains the connection string that is used by the ADO data adapter to connect to an ActiveX Data Objects/OLEDB external data source.

Note The ADOAdapter object is limited to work only with Microsoft SQL Server and Microsoft Access databases.

## Example

In the following example, the Connection property of the ADOAdapter object is used to display the connection string of the ADO data adapter in a message box:

    var objADOAdapter;

    objADOAdapter = XDocument.DataObjects("CityList").QueryAdapter;
    XDocument.UI.Alert("Connection string: " + objADOAdapter.Connection);

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