How to do a LIKE in Entity Framework CORE (not full .net)

How to do a LIKE in Entity Framework CORE (not full .net)

In Entity Framework Core, you can use the Contains() method to perform a LIKE query on a string property. Here's an example:

var results = context.MyEntities.Where(e => e.MyProperty.Contains("search term"));

This will return all MyEntity objects where the MyProperty string contains the specified search term.

Note that this approach is case-sensitive. If you want a case-insensitive LIKE query, you can use the ToUpper() or ToLower() method to convert both the property value and the search term to the same case, like this:

var searchTerm = "search term".ToUpper(); var results = context.MyEntities.Where(e => e.MyProperty.ToUpper().Contains(searchTerm));

This will return all MyEntity objects where the MyProperty string contains the specified search term, regardless of case.

Examples

  1. "Entity Framework Core LIKE query with Contains()"

    var searchTerm = "abc"; var results = dbContext.Entities.Where(e => EF.Functions.Like(e.Property, $"%{searchTerm}%")).ToList();

    Description: Use EF.Functions.Like method with Contains to perform a LIKE query in Entity Framework Core.

  2. "Entity Framework Core LIKE query with StartsWith()"

    var searchTerm = "abc"; var results = dbContext.Entities.Where(e => EF.Functions.Like(e.Property, $"{searchTerm}%")).ToList();

    Description: Utilize EF.Functions.Like method with StartsWith to perform a LIKE query with a prefix in Entity Framework Core.

  3. "Entity Framework Core LIKE query with EndsWith()"

    var searchTerm = "abc"; var results = dbContext.Entities.Where(e => EF.Functions.Like(e.Property, $"%{searchTerm}")).ToList();

    Description: Use EF.Functions.Like method with EndsWith to perform a LIKE query with a suffix in Entity Framework Core.

  4. "Entity Framework Core LIKE query with StringComparison"

    var searchTerm = "abc"; var results = dbContext.Entities.Where(e => EF.Functions.Like(e.Property, searchTerm, StringComparison.OrdinalIgnoreCase)).ToList();

    Description: Perform a case-insensitive LIKE query using EF.Functions.Like with StringComparison in Entity Framework Core.

  5. "Entity Framework Core LIKE query with parameterized values"

    var searchTerm = "abc"; var results = dbContext.Entities.Where(e => EF.Functions.Like(e.Property, $"%{searchTerm}%")).ToList();

    Description: Parameterize the LIKE query by injecting the search term into the query string.

  6. "Entity Framework Core LIKE query with interpolated SQL"

    var searchTerm = "abc"; var results = dbContext.Entities.FromSqlInterpolated($"SELECT * FROM Entities WHERE Property LIKE {searchTerm}").ToList();

    Description: Use interpolated SQL with FromSqlInterpolated to execute a LIKE query in Entity Framework Core.

  7. "Entity Framework Core LIKE query on multiple columns"

    var searchTerm = "abc"; var results = dbContext.Entities .Where(e => EF.Functions.Like(e.Property1, $"%{searchTerm}%") || EF.Functions.Like(e.Property2, $"%{searchTerm}%")) .ToList();

    Description: Perform a LIKE query on multiple columns in Entity Framework Core using logical OR.

  8. "Entity Framework Core LIKE query with a wildcard character"

    var searchTerm = "a_c"; var results = dbContext.Entities.Where(e => EF.Functions.Like(e.Property, searchTerm.Replace("_", "\\_"))).ToList();

    Description: Handle wildcard characters (e.g., underscore) in the LIKE query using Replace in Entity Framework Core.

  9. "Entity Framework Core LIKE query with raw SQL"

    var searchTerm = "abc"; var results = dbContext.Entities.FromSqlRaw($"SELECT * FROM Entities WHERE Property LIKE '%{searchTerm}%'").ToList();

    Description: Use raw SQL with FromSqlRaw to execute a LIKE query in Entity Framework Core.

  10. "Entity Framework Core LIKE query with EF.Functions.Like in projection"

    var searchTerm = "abc"; var results = dbContext.Entities .Select(e => new { e.Id, Match = EF.Functions.Like(e.Property, $"%{searchTerm}%") }) .ToList();

    Description: Use EF.Functions.Like in a projection to return boolean values indicating whether the LIKE condition is met for each entity in Entity Framework Core.

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