Insert a list using dapper.NET C#

Insert a list using dapper.NET C#

To insert a list of objects using Dapper.NET in C#, you can use the Execute() method with a SQL INSERT statement that includes parameters for the properties of the objects in the list.

Here's an example of how to insert a list of objects using Dapper.NET in C#:

public class Person { public int Id { get; set; } public string Name { get; set; } public int Age { get; set; } } public class MyRepository { private readonly string _connectionString; public MyRepository(string connectionString) { _connectionString = connectionString; } public void InsertPeople(List<Person> people) { using (var connection = new SqlConnection(_connectionString)) { connection.Open(); // Construct the SQL INSERT statement with parameters for each property of the Person object var sql = "INSERT INTO People (Name, Age) VALUES (@Name, @Age)"; // Use Dapper's Execute method to execute the SQL statement for each person in the list foreach (var person in people) { connection.Execute(sql, new { Name = person.Name, Age = person.Age }); } } } }

In this example, we have a Person class with Id, Name, and Age properties. We also have a MyRepository class that contains a method called InsertPeople() that takes a list of Person objects.

To insert the list of Person objects into the database, we construct a SQL INSERT statement that includes parameters for the Name and Age properties of the Person objects. We then use Dapper's Execute() method to execute the SQL statement for each Person object in the list, passing in an anonymous type that contains the values of the Name and Age properties.

By using Dapper.NET and SQL INSERT statements with parameters, you can easily insert a list of objects into a database in C#.

Examples

  1. "Dapper.NET Insert List into SQL Server Table in C#"

    • Description: Learn how to use Dapper.NET to insert a list of objects into a SQL Server table in C#.
    // Dapper.NET Insert List into SQL Server Table List<YourObject> objectsToInsert = GetYourObjects(); // Implement your object retrieval logic using (SqlConnection connection = new SqlConnection("YourConnectionString")) { connection.Open(); connection.Execute("INSERT INTO YourDestinationTable (Columns) VALUES (@Property1, @Property2, ...)", objectsToInsert); }

  2. "Bulk Insert with Dapper.NET and SqlBulkCopy in C#"

    • Description: Combine Dapper.NET and SqlBulkCopy for a high-performance bulk insert of a list of objects into a SQL Server table.
    // Bulk Insert with Dapper.NET and SqlBulkCopy List<YourObject> objectsToInsert = GetYourObjects(); // Implement your object retrieval logic using (SqlConnection connection = new SqlConnection("YourConnectionString")) { connection.Open(); using (var bulkCopy = new SqlBulkCopy(connection)) { bulkCopy.DestinationTableName = "YourDestinationTable"; var dataTable = YourObjectListToDataTable(objectsToInsert); // Implement conversion to DataTable bulkCopy.WriteToServer(dataTable); } }

  3. "Insert List of Objects with Dapper.NET Execute in C#"

    • Description: Use Dapper.NET's Execute method to insert a list of objects into a SQL Server table efficiently.
    // Insert List of Objects with Dapper.NET Execute List<YourObject> objectsToInsert = GetYourObjects(); // Implement your object retrieval logic using (SqlConnection connection = new SqlConnection("YourConnectionString")) { connection.Open(); connection.Execute("INSERT INTO YourDestinationTable (Columns) VALUES (@Property1, @Property2, ...)", objectsToInsert); }

  4. "Dapper.NET Bulk Insert with Stored Procedure in C#"

    • Description: Perform a bulk insert using Dapper.NET and a stored procedure for better organization and maintainability.
    // Dapper.NET Bulk Insert with Stored Procedure List<YourObject> objectsToInsert = GetYourObjects(); // Implement your object retrieval logic using (SqlConnection connection = new SqlConnection("YourConnectionString")) { connection.Open(); connection.Execute("YourStoredProcedure", objectsToInsert, commandType: CommandType.StoredProcedure); }

  5. "Dapper.NET Insert List with Transaction in C#"

    • Description: Wrap the Dapper.NET insert operation in a transaction for atomicity when inserting a list of objects into a SQL Server table.
    // Dapper.NET Insert List with Transaction List<YourObject> objectsToInsert = GetYourObjects(); // Implement your object retrieval logic using (SqlConnection connection = new SqlConnection("YourConnectionString")) { connection.Open(); using (var transaction = connection.BeginTransaction()) { connection.Execute("INSERT INTO YourDestinationTable (Columns) VALUES (@Property1, @Property2, ...)", objectsToInsert, transaction: transaction); transaction.Commit(); } }

  6. "Dapper.NET Insert List with Identity Column Handling in C#"

    • Description: Handle identity columns when inserting a list of objects into a SQL Server table using Dapper.NET.
    // Dapper.NET Insert List with Identity Column Handling List<YourObject> objectsToInsert = GetYourObjects(); // Implement your object retrieval logic using (SqlConnection connection = new SqlConnection("YourConnectionString")) { connection.Open(); connection.Execute("INSERT INTO YourDestinationTable (Columns) OUTPUT INSERTED.Id VALUES (@Property1, @Property2, ...)", objectsToInsert); }

  7. "Dapper.NET Insert List with Dynamic Parameters in C#"

    • Description: Use Dapper.NET's dynamic parameters to insert a list of objects into a SQL Server table with flexibility.
    // Dapper.NET Insert List with Dynamic Parameters List<YourObject> objectsToInsert = GetYourObjects(); // Implement your object retrieval logic using (SqlConnection connection = new SqlConnection("YourConnectionString")) { connection.Open(); connection.Execute("INSERT INTO YourDestinationTable (Columns) VALUES (@Property1, @Property2, ...)", objectsToInsert.Select(obj => new { obj.Property1, obj.Property2 })); }

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