EntityConnectionExtensions.FirstAsync<TRow> method (1 of 2)

namespace: Serenity.Data   assembly: Serenity.Net.Services

Asynchronously finds first entity, allowing the caller to set criteria and fields to select through an editQuery callback.

public static Task<TRow> FirstAsync<TRow>(this IDbConnection connection, 
    Action<SqlQuery> editQuery, CancellationToken cancellationToken = default(CancellationToken))
    where TRow : class, IRow, new()

parameter	description
TRow	The type of the row.
connection	The connection.
editQuery	The edit query callback.
cancellationToken	The cancellation token.

Return Value

A task representing the asynchronous operation. The task result is the first entity matching the criteria.

Exceptions

exception	condition
ValidationError	No records matching the specified criteria.

See Also

• class TRow
• class SqlQuery
• interface IRow
• class EntityConnectionExtensions

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EntityConnectionExtensions.FirstAsync<TRow> method (2 of 2)

namespace: Serenity.Data   assembly: Serenity.Net.Services

Asynchronously finds first entity matching a where criteria.

public static Task<TRow> FirstAsync<TRow>(this IDbConnection connection, ICriteria where, 
    CancellationToken cancellationToken = default(CancellationToken))
    where TRow : class, IRow, new()

parameter	description
TRow	The type of the row.
connection	The connection.
where	The where criteria.
cancellationToken	The cancellation token.

Return Value

A task representing the asynchronous operation. The task result is the first entity matching the where criteria.

Exceptions

exception	condition
ValidationError	No records matching the specified criteria.

See Also

• class TRow
• interface ICriteria
• interface IRow
• class EntityConnectionExtensions