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.
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.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 | 26 | 02/21/2026 |
| 4.9.0 | 32 | 12/12/2025 |
| 4.8.6 | 27 | 12/10/2025 |
| 4.8.5 | 23 | 12/10/2025 |
| 4.8.4 | 35 | 12/11/2025 |
| 4.8.3 | 22 | 12/10/2025 |
| 4.8.2 | 32 | 12/10/2025 |
| 4.8.1 | 29 | 12/11/2025 |
| 4.8.0 | 27 | 12/11/2025 |
| 4.8.0-preview3.19551.4 | 25 | 12/11/2025 |
| 4.8.0-preview2.19523.17 | 20 | 12/11/2025 |
| 4.8.0-preview1.19504.10 | 28 | 12/11/2025 |
| 4.7.0 | 1,383 | 12/10/2025 |
| 4.7.0-rc1.19456.4 | 28 | 12/11/2025 |
| 4.7.0-preview9.19421.4 | 24 | 12/20/2025 |
| 4.7.0-preview9.19416.11 | 26 | 12/11/2025 |
| 4.7.0-preview8.19405.3 | 28 | 12/11/2025 |
| 4.7.0-preview7.19362.9 | 37 | 12/11/2025 |
| 4.7.0-preview6.19303.8 | 21 | 12/11/2025 |
| 4.7.0-preview6.19264.9 | 26 | 12/11/2025 |
| 4.7.0-preview5.19224.8 | 20 | 12/11/2025 |
| 4.7.0-preview4.19212.13 | 27 | 12/11/2025 |
| 4.7.0-preview3.19128.7 | 22 | 12/11/2025 |
| 4.7.0-preview.19073.11 | 36 | 12/10/2025 |
| 4.7.0-preview.18571.3 | 26 | 12/11/2025 |
| 4.6.1 | 29 | 12/11/2025 |
| 4.6.0 | 28 | 12/11/2025 |
| 4.6.0-preview3-27014-02 | 29 | 12/10/2025 |
| 4.6.0-preview2-26905-02 | 25 | 12/10/2025 |
| 4.5.3 | 28 | 12/12/2025 |
| 4.5.1 | 33 | 12/11/2025 |
| 4.5.0 | 21 | 12/11/2025 |
| 4.5.0-rc1 | 26 | 12/10/2025 |
| 4.5.0-preview2-26406-04 | 26 | 12/11/2025 |
| 4.5.0-preview1-26216-02 | 26 | 12/12/2025 |
| 4.4.3 | 25 | 12/11/2025 |
| 4.4.2 | 14 | 12/12/2025 |
| 4.4.1 | 23 | 12/10/2025 |
| 4.4.0 | 24 | 12/11/2025 |
| 4.4.0-preview2-25405-01 | 21 | 12/11/2025 |
| 4.4.0-preview1-25305-02 | 27 | 12/11/2025 |
| 4.3.1 | 21 | 12/11/2025 |
| 4.3.0 | 29 | 12/11/2025 |
| 4.3.0-preview1-24530-04 | 31 | 12/11/2025 |
| 4.1.0 | 26 | 12/11/2025 |
| 4.1.0-rc2-24027 | 24 | 12/11/2025 |
| 4.0.0-beta-23516 | 28 | 12/12/2025 |
| 4.0.0-beta-23409 | 24 | 12/10/2025 |
| 4.0.0-beta-23225 | 26 | 12/11/2025 |
| 4.0.0-beta-23123 | 29 | 12/10/2025 |
| 4.0.0-beta-23109 | 26 | 12/10/2025 |
| 4.0.0-beta-23019 | 29 | 12/09/2025 |
| 4.0.0-beta-22816 | 30 | 12/11/2025 |
| 4.0.0-beta-22605 | 22 | 12/11/2025 |
| 1.0.0-beta2 | 25 | 12/10/2025 |
| 1.0.0-beta1 | 27 | 12/11/2025 |