SQL to C# Class Generator

Generate a C# entity class directly from a SQL CREATE TABLE statement.

How to Use SQL to C# Class Generator

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SQL to C# Class Generator — Free Developer Utility

SQL to C# Class Generator parses a SQL Server CREATE TABLE statement and produces a matching C# entity class with correctly mapped data types, nullable annotations, and a [Key] attribute on the primary key column — the exact class shape Entity Framework expects for a code-first-compatible model. Paste your table definition and the tool maps SQL types to their C# equivalents (int, bigint→long, varchar/nvarchar→string, datetime→DateTime, uniqueidentifier→Guid, decimal→decimal) while respecting NOT NULL constraints to decide whether value types should be nullable. This is useful when reverse-engineering an existing database into Entity Framework models, quickly scaffolding a DTO to match a table you're querying with Dapper, or documenting a schema in strongly-typed C# form for a new team member.

Keywords and Search Terms

Developers searching for this tool use terms like: sql to c# class, create table to c#, sql to entity, generate c# from sql schema, database to csharp model. Tooliby provides this utility free with no signup, no watermarks, and no data logging.

Privacy — Your Data is Never Stored

Every input you paste into Tooliby developer tools is processed in memory and immediately discarded. We do not log inputs, store results, or analyze your data.

Frequently Asked Questions

It's built for SQL Server T-SQL syntax specifically (bracket-quoted identifiers, SQL Server type names). MySQL or PostgreSQL CREATE TABLE syntax may not parse correctly.

It looks for an explicit PRIMARY KEY constraint in the column definition, or falls back to assuming a column named 'Id' is the primary key if no explicit constraint is found.

No — this generates a flat entity class for the single table. Foreign key navigation properties need to be added manually based on your actual relationships.

Unrecognized SQL types default to string. Review the generated output and adjust any types that don't map correctly for your specific schema.