System.Data.SqlClient 4.9.1
About
The legacy .NET Data Provider for SQL Server. These classes provide access to versions of SQL Server and encapsulate database-specific protocols, including tabular data stream (TDS).
System.Data.SqlClient is deprecated. Please use Microsoft.Data.SqlClient instead.
Main Types
The main types provided by this library are:
- System.Data.SqlClient.SqlConnection
- System.Data.SqlClient.SqlException
- System.Data.SqlClient.SqlParameter
- System.Data.SqlDbType
- System.Data.SqlClient.SqlDataReader
- System.Data.SqlClient.SqlCommand
- System.Data.SqlClient.SqlTransaction
- System.Data.SqlClient.SqlParameterCollection
- System.Data.SqlClient.SqlClientFactory
Additional Documentation
- Introducing the new Microsoft.Data.SqlClient
- Announcement: System.Data.SqlClient package is now deprecated
- For conceptual information about using this namespace when programming with .NET, see SQL Server and ADO.NET.
- API reference for System.Data.SqlClient can be found in: https://learn.microsoft.com/en-us/dotnet/api/system.data.sqlclient?view=netframework-4.8.1
- API reference for Microsoft.Data.SqlClient can be found in: https://learn.microsoft.com/en-us/dotnet/api/microsoft.data.sqlclient
Related Packages
License
System.Data.SqlClient is released as open source under the MIT license.
.NET Framework 4.6.2
- No dependencies.
.NET 6.0
- runtime.native.System.Data.SqlClient.sni (>= 4.4.0)
.NET 8.0
- runtime.native.System.Data.SqlClient.sni (>= 4.4.0)
.NET Standard 2.0
- No dependencies.
| Version | Downloads | Last updated |
|---|---|---|
| 4.9.1 | 4 | 04/05/2026 |
| 4.9.0 | 4 | 02/14/2026 |
| 4.8.6 | 5 | 02/14/2026 |
| 4.8.5 | 5 | 02/14/2026 |
| 4.8.4 | 5 | 02/14/2026 |
| 4.8.3 | 5 | 02/14/2026 |
| 4.8.2 | 5 | 02/14/2026 |
| 4.8.1 | 5 | 02/14/2026 |
| 4.8.0 | 5 | 02/14/2026 |
| 4.8.0-preview3.19551.4 | 5 | 02/14/2026 |
| 4.8.0-preview2.19523.17 | 5 | 02/14/2026 |
| 4.8.0-preview1.19504.10 | 5 | 02/14/2026 |
| 4.7.0 | 5 | 02/14/2026 |
| 4.7.0-rc1.19456.4 | 5 | 02/14/2026 |
| 4.7.0-preview9.19421.4 | 5 | 02/14/2026 |
| 4.7.0-preview9.19416.11 | 5 | 02/14/2026 |
| 4.7.0-preview8.19405.3 | 5 | 02/14/2026 |
| 4.7.0-preview7.19362.9 | 5 | 02/14/2026 |
| 4.7.0-preview6.19303.8 | 5 | 02/14/2026 |
| 4.7.0-preview6.19264.9 | 5 | 02/14/2026 |
| 4.7.0-preview5.19224.8 | 5 | 02/14/2026 |
| 4.7.0-preview4.19212.13 | 5 | 02/14/2026 |
| 4.7.0-preview3.19128.7 | 5 | 02/14/2026 |
| 4.7.0-preview.19073.11 | 5 | 02/14/2026 |
| 4.7.0-preview.18571.3 | 5 | 02/14/2026 |
| 4.6.1 | 5 | 02/14/2026 |
| 4.6.0 | 5 | 02/14/2026 |
| 4.6.0-preview3-27014-02 | 5 | 02/14/2026 |
| 4.6.0-preview2-26905-02 | 5 | 02/14/2026 |
| 4.5.3 | 5 | 02/14/2026 |
| 4.5.1 | 5 | 02/14/2026 |
| 4.5.0 | 5 | 02/14/2026 |
| 4.5.0-rc1 | 5 | 02/14/2026 |
| 4.5.0-preview2-26406-04 | 5 | 02/14/2026 |
| 4.5.0-preview1-26216-02 | 5 | 02/14/2026 |
| 4.4.3 | 5 | 02/14/2026 |
| 4.4.2 | 5 | 02/14/2026 |
| 4.4.1 | 5 | 02/14/2026 |
| 4.4.0 | 5 | 02/14/2026 |
| 4.4.0-preview2-25405-01 | 5 | 02/14/2026 |
| 4.4.0-preview1-25305-02 | 5 | 02/14/2026 |
| 4.3.1 | 5 | 02/14/2026 |
| 4.3.0 | 5 | 02/14/2026 |
| 4.3.0-preview1-24530-04 | 5 | 02/14/2026 |
| 4.1.0 | 5 | 02/14/2026 |
| 4.1.0-rc2-24027 | 4 | 02/14/2026 |
| 4.0.0-beta-23516 | 5 | 02/14/2026 |
| 4.0.0-beta-23409 | 5 | 02/14/2026 |
| 4.0.0-beta-23225 | 5 | 02/14/2026 |
| 4.0.0-beta-23123 | 5 | 02/14/2026 |
| 4.0.0-beta-23109 | 5 | 02/14/2026 |
| 4.0.0-beta-23019 | 5 | 02/14/2026 |
| 4.0.0-beta-22816 | 5 | 02/14/2026 |
| 4.0.0-beta-22605 | 5 | 02/14/2026 |
| 1.0.0-beta2 | 5 | 02/14/2026 |
| 1.0.0-beta1 | 5 | 02/14/2026 |