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Microsoft.Data.SqlClient 7.0 Is Here: A Leaner, More Modular Driver for SQL Server

Microsoft

Mar 18, 2026

Today we're shipping the general availability release of Microsoft.Data.SqlClient 7.0, a major milestone for the .NET data provider for SQL Server. This release tackles the single most requested chan...

Published Mar 18, 2026

Version 1.0

sqlserverprogrammability

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DavidLevy

Microsoft

Joined February 28, 2023

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Alexander1030

Copper Contributor

Mar 24, 2026

I appreciate the good work.

Nevertheless I want you to know I just spent two agonizing hours tracking a bug that is caused by SqlBulkCopy.WriteToServer() in System.Data.SqlClient 7.0.0
Specifically, it simply fails to insert data into a #TempTable complaining about a missing "graph_type" column (which cannot exist on a Server 2016 (SP3-CU1-GDR) (KB5077473) - 13.0.7075.5 (X64) anyway).

Reverting to System.Data.SqlClient 6.1.4 makes the problem go away...